| Flutter Impeller |

rect_unittests.cc
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1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "gtest/gtest.h"
6
7 #include "flutter/impeller/geometry/rect.h"
8
9 #include "flutter/impeller/geometry/geometry_asserts.h"
10
11 namespace impeller {
12 namespace testing {
13
14 TEST(RectTest, RectEmptyDeclaration) {
15 Rect rect;
16
17 EXPECT_EQ(rect.GetLeft(), 0.0f);
18 EXPECT_EQ(rect.GetTop(), 0.0f);
19 EXPECT_EQ(rect.GetRight(), 0.0f);
20 EXPECT_EQ(rect.GetBottom(), 0.0f);
21 EXPECT_EQ(rect.GetX(), 0.0f);
22 EXPECT_EQ(rect.GetY(), 0.0f);
23 EXPECT_EQ(rect.GetWidth(), 0.0f);
24 EXPECT_EQ(rect.GetHeight(), 0.0f);
25 EXPECT_TRUE(rect.IsEmpty());
26 EXPECT_TRUE(rect.IsFinite());
27 }
28
29 TEST(RectTest, IRectEmptyDeclaration) {
30 IRect rect;
31
32 EXPECT_EQ(rect.GetLeft(), 0);
33 EXPECT_EQ(rect.GetTop(), 0);
34 EXPECT_EQ(rect.GetRight(), 0);
35 EXPECT_EQ(rect.GetBottom(), 0);
36 EXPECT_EQ(rect.GetX(), 0);
37 EXPECT_EQ(rect.GetY(), 0);
38 EXPECT_EQ(rect.GetWidth(), 0);
39 EXPECT_EQ(rect.GetHeight(), 0);
40 EXPECT_TRUE(rect.IsEmpty());
41 // EXPECT_TRUE(rect.IsFinite()); // should fail to compile
42 }
43
44 TEST(RectTest, RectDefaultConstructor) {
45 Rect rect = Rect();
46
47 EXPECT_EQ(rect.GetLeft(), 0.0f);
48 EXPECT_EQ(rect.GetTop(), 0.0f);
49 EXPECT_EQ(rect.GetRight(), 0.0f);
50 EXPECT_EQ(rect.GetBottom(), 0.0f);
51 EXPECT_EQ(rect.GetX(), 0.0f);
52 EXPECT_EQ(rect.GetY(), 0.0f);
53 EXPECT_EQ(rect.GetWidth(), 0.0f);
54 EXPECT_EQ(rect.GetHeight(), 0.0f);
55 EXPECT_TRUE(rect.IsEmpty());
56 EXPECT_TRUE(rect.IsFinite());
57 }
58
59 TEST(RectTest, IRectDefaultConstructor) {
60 IRect rect = IRect();
61
62 EXPECT_EQ(rect.GetLeft(), 0);
63 EXPECT_EQ(rect.GetTop(), 0);
64 EXPECT_EQ(rect.GetRight(), 0);
65 EXPECT_EQ(rect.GetBottom(), 0);
66 EXPECT_EQ(rect.GetX(), 0);
67 EXPECT_EQ(rect.GetY(), 0);
68 EXPECT_EQ(rect.GetWidth(), 0);
69 EXPECT_EQ(rect.GetHeight(), 0);
70 EXPECT_TRUE(rect.IsEmpty());
71 }
72
73 TEST(RectTest, RectSimpleLTRB) {
74 // Using fractional-power-of-2 friendly values for equality tests
75 Rect rect = Rect::MakeLTRB(5.125f, 10.25f, 20.625f, 25.375f);
76
77 EXPECT_EQ(rect.GetLeft(), 5.125f);
78 EXPECT_EQ(rect.GetTop(), 10.25f);
79 EXPECT_EQ(rect.GetRight(), 20.625f);
80 EXPECT_EQ(rect.GetBottom(), 25.375f);
81 EXPECT_EQ(rect.GetX(), 5.125f);
82 EXPECT_EQ(rect.GetY(), 10.25f);
83 EXPECT_EQ(rect.GetWidth(), 15.5f);
84 EXPECT_EQ(rect.GetHeight(), 15.125f);
85 EXPECT_FALSE(rect.IsEmpty());
86 EXPECT_TRUE(rect.IsFinite());
87 }
88
89 TEST(RectTest, IRectSimpleLTRB) {
90 IRect rect = IRect::MakeLTRB(5, 10, 20, 25);
91
92 EXPECT_EQ(rect.GetLeft(), 5);
93 EXPECT_EQ(rect.GetTop(), 10);
94 EXPECT_EQ(rect.GetRight(), 20);
95 EXPECT_EQ(rect.GetBottom(), 25);
96 EXPECT_EQ(rect.GetX(), 5);
97 EXPECT_EQ(rect.GetY(), 10);
98 EXPECT_EQ(rect.GetWidth(), 15);
99 EXPECT_EQ(rect.GetHeight(), 15);
100 EXPECT_FALSE(rect.IsEmpty());
101 }
102
103 TEST(RectTest, RectSimpleXYWH) {
104 // Using fractional-power-of-2 friendly values for equality tests
105 Rect rect = Rect::MakeXYWH(5.125f, 10.25f, 15.5f, 15.125f);
106
107 EXPECT_EQ(rect.GetLeft(), 5.125f);
108 EXPECT_EQ(rect.GetTop(), 10.25f);
109 EXPECT_EQ(rect.GetRight(), 20.625f);
110 EXPECT_EQ(rect.GetBottom(), 25.375f);
111 EXPECT_EQ(rect.GetX(), 5.125f);
112 EXPECT_EQ(rect.GetY(), 10.25f);
113 EXPECT_EQ(rect.GetWidth(), 15.5f);
114 EXPECT_EQ(rect.GetHeight(), 15.125f);
115 EXPECT_FALSE(rect.IsEmpty());
116 EXPECT_TRUE(rect.IsFinite());
117 }
118
119 TEST(RectTest, IRectSimpleXYWH) {
120 IRect rect = IRect::MakeXYWH(5, 10, 15, 16);
121
122 EXPECT_EQ(rect.GetLeft(), 5);
123 EXPECT_EQ(rect.GetTop(), 10);
124 EXPECT_EQ(rect.GetRight(), 20);
125 EXPECT_EQ(rect.GetBottom(), 26);
126 EXPECT_EQ(rect.GetX(), 5);
127 EXPECT_EQ(rect.GetY(), 10);
128 EXPECT_EQ(rect.GetWidth(), 15);
129 EXPECT_EQ(rect.GetHeight(), 16);
130 EXPECT_FALSE(rect.IsEmpty());
131 }
132
133 TEST(RectTest, RectSimpleWH) {
134 // Using fractional-power-of-2 friendly values for equality tests
135 Rect rect = Rect::MakeWH(15.5f, 15.125f);
136
137 EXPECT_EQ(rect.GetLeft(), 0.0f);
138 EXPECT_EQ(rect.GetTop(), 0.0f);
139 EXPECT_EQ(rect.GetRight(), 15.5f);
140 EXPECT_EQ(rect.GetBottom(), 15.125f);
141 EXPECT_EQ(rect.GetX(), 0.0f);
142 EXPECT_EQ(rect.GetY(), 0.0f);
143 EXPECT_EQ(rect.GetWidth(), 15.5f);
144 EXPECT_EQ(rect.GetHeight(), 15.125f);
145 EXPECT_FALSE(rect.IsEmpty());
146 EXPECT_TRUE(rect.IsFinite());
147 }
148
149 TEST(RectTest, IRectSimpleWH) {
150 // Using fractional-power-of-2 friendly values for equality tests
151 IRect rect = IRect::MakeWH(15, 25);
152
153 EXPECT_EQ(rect.GetLeft(), 0);
154 EXPECT_EQ(rect.GetTop(), 0);
155 EXPECT_EQ(rect.GetRight(), 15);
156 EXPECT_EQ(rect.GetBottom(), 25);
157 EXPECT_EQ(rect.GetX(), 0);
158 EXPECT_EQ(rect.GetY(), 0);
159 EXPECT_EQ(rect.GetWidth(), 15);
160 EXPECT_EQ(rect.GetHeight(), 25);
161 EXPECT_FALSE(rect.IsEmpty());
162 }
163
164 TEST(RectTest, RectFromIRect) {
165 IRect irect = IRect::MakeLTRB(10, 20, 30, 40);
166 Rect rect = Rect::Make(irect);
167
168 EXPECT_EQ(rect.GetLeft(), 10);
169 EXPECT_EQ(rect.GetTop(), 20);
170 EXPECT_EQ(rect.GetRight(), 30);
171 EXPECT_EQ(rect.GetBottom(), 40);
172
173 // The following do not compile
174 // IRect irect2 = IRect::Make(rect);
175 // IRect irect2 = IRect::Make(irect);
176 }
177
178 TEST(RectTest, RectOverflowXYWH) {
179 auto min = std::numeric_limits<Scalar>::lowest();
180 auto max = std::numeric_limits<Scalar>::max();
181 auto inf = std::numeric_limits<Scalar>::infinity();
182
183 // 8 cases:
184 // finite X, max W
185 // max X, max W
186 // finite Y, max H
187 // max Y, max H
188 // finite X, min W
189 // min X, min W
190 // finite Y, min H
191 // min Y, min H
192
193 // a small finite value added to a max value will remain max
194 // a very large finite value (like max) added to max will go to infinity
195
196 {
197 Rect rect = Rect::MakeXYWH(5.0, 10.0f, max, 15.0f);
198
199 EXPECT_EQ(rect.GetLeft(), 5.0f);
200 EXPECT_EQ(rect.GetTop(), 10.0f);
201 EXPECT_EQ(rect.GetRight(), max);
202 EXPECT_EQ(rect.GetBottom(), 25.0f);
203 EXPECT_EQ(rect.GetX(), 5.0f);
204 EXPECT_EQ(rect.GetY(), 10.0f);
205 EXPECT_EQ(rect.GetWidth(), max);
206 EXPECT_EQ(rect.GetHeight(), 15.0f);
207 EXPECT_FALSE(rect.IsEmpty());
208 EXPECT_TRUE(rect.IsFinite());
209 }
210
211 {
212 Rect rect = Rect::MakeXYWH(max, 10.0f, max, 15.0f);
213
214 EXPECT_EQ(rect.GetLeft(), max);
215 EXPECT_EQ(rect.GetTop(), 10.0f);
216 EXPECT_EQ(rect.GetRight(), inf);
217 EXPECT_EQ(rect.GetBottom(), 25.0f);
218 EXPECT_EQ(rect.GetX(), max);
219 EXPECT_EQ(rect.GetY(), 10.0f);
220 EXPECT_EQ(rect.GetWidth(), inf);
221 EXPECT_EQ(rect.GetHeight(), 15.0f);
222 EXPECT_FALSE(rect.IsEmpty());
223 EXPECT_FALSE(rect.IsFinite());
224 }
225
226 {
227 Rect rect = Rect::MakeXYWH(5.0f, 10.0f, 20.0f, max);
228
229 EXPECT_EQ(rect.GetLeft(), 5.0f);
230 EXPECT_EQ(rect.GetTop(), 10.0f);
231 EXPECT_EQ(rect.GetRight(), 25.0f);
232 EXPECT_EQ(rect.GetBottom(), max);
233 EXPECT_EQ(rect.GetX(), 5.0f);
234 EXPECT_EQ(rect.GetY(), 10.0f);
235 EXPECT_EQ(rect.GetWidth(), 20.0f);
236 EXPECT_EQ(rect.GetHeight(), max);
237 EXPECT_FALSE(rect.IsEmpty());
238 EXPECT_TRUE(rect.IsFinite());
239 }
240
241 {
242 Rect rect = Rect::MakeXYWH(5.0f, max, 20.0f, max);
243
244 EXPECT_EQ(rect.GetLeft(), 5.0f);
245 EXPECT_EQ(rect.GetTop(), max);
246 EXPECT_EQ(rect.GetRight(), 25.0f);
247 EXPECT_EQ(rect.GetBottom(), inf);
248 EXPECT_EQ(rect.GetX(), 5.0f);
249 EXPECT_EQ(rect.GetY(), max);
250 EXPECT_EQ(rect.GetWidth(), 20.0f);
251 EXPECT_EQ(rect.GetHeight(), inf);
252 EXPECT_FALSE(rect.IsEmpty());
253 EXPECT_FALSE(rect.IsFinite());
254 }
255
256 {
257 Rect rect = Rect::MakeXYWH(5.0, 10.0f, min, 15.0f);
258
259 EXPECT_EQ(rect.GetLeft(), 5.0f);
260 EXPECT_EQ(rect.GetTop(), 10.0f);
261 EXPECT_EQ(rect.GetRight(), min);
262 EXPECT_EQ(rect.GetBottom(), 25.0f);
263 EXPECT_EQ(rect.GetX(), 5.0f);
264 EXPECT_EQ(rect.GetY(), 10.0f);
265 EXPECT_EQ(rect.GetWidth(), min);
266 EXPECT_EQ(rect.GetHeight(), 15.0f);
267 EXPECT_TRUE(rect.IsEmpty());
268 EXPECT_TRUE(rect.IsFinite());
269 }
270
271 {
272 Rect rect = Rect::MakeXYWH(min, 10.0f, min, 15.0f);
273
274 EXPECT_EQ(rect.GetLeft(), min);
275 EXPECT_EQ(rect.GetTop(), 10.0f);
276 EXPECT_EQ(rect.GetRight(), -inf);
277 EXPECT_EQ(rect.GetBottom(), 25.0f);
278 EXPECT_EQ(rect.GetX(), min);
279 EXPECT_EQ(rect.GetY(), 10.0f);
280 EXPECT_EQ(rect.GetWidth(), -inf);
281 EXPECT_EQ(rect.GetHeight(), 15.0f);
282 EXPECT_TRUE(rect.IsEmpty());
283 EXPECT_FALSE(rect.IsFinite());
284 }
285
286 {
287 Rect rect = Rect::MakeXYWH(5.0f, 10.0f, 20.0f, min);
288
289 EXPECT_EQ(rect.GetLeft(), 5.0f);
290 EXPECT_EQ(rect.GetTop(), 10.0f);
291 EXPECT_EQ(rect.GetRight(), 25.0f);
292 EXPECT_EQ(rect.GetBottom(), min);
293 EXPECT_EQ(rect.GetX(), 5.0f);
294 EXPECT_EQ(rect.GetY(), 10.0f);
295 EXPECT_EQ(rect.GetWidth(), 20.0f);
296 EXPECT_EQ(rect.GetHeight(), min);
297 EXPECT_TRUE(rect.IsEmpty());
298 EXPECT_TRUE(rect.IsFinite());
299 }
300
301 {
302 Rect rect = Rect::MakeXYWH(5.0f, min, 20.0f, min);
303
304 EXPECT_EQ(rect.GetLeft(), 5.0f);
305 EXPECT_EQ(rect.GetTop(), min);
306 EXPECT_EQ(rect.GetRight(), 25.0f);
307 EXPECT_EQ(rect.GetBottom(), -inf);
308 EXPECT_EQ(rect.GetX(), 5.0f);
309 EXPECT_EQ(rect.GetY(), min);
310 EXPECT_EQ(rect.GetWidth(), 20.0f);
311 EXPECT_EQ(rect.GetHeight(), -inf);
312 EXPECT_TRUE(rect.IsEmpty());
313 EXPECT_FALSE(rect.IsFinite());
314 }
315 }
316
317 TEST(RectTest, IRectOverflowXYWH) {
318 auto min = std::numeric_limits<int64_t>::min();
319 auto max = std::numeric_limits<int64_t>::max();
320
321 // 4 cases
322 // x near max, positive w takes it past max
323 // x near min, negative w takes it below min
324 // y near max, positive h takes it past max
325 // y near min, negative h takes it below min
326
327 {
328 IRect rect = IRect::MakeXYWH(max - 5, 10, 10, 16);
329
330 EXPECT_EQ(rect.GetLeft(), max - 5);
331 EXPECT_EQ(rect.GetTop(), 10);
332 EXPECT_EQ(rect.GetRight(), max);
333 EXPECT_EQ(rect.GetBottom(), 26);
334 EXPECT_EQ(rect.GetX(), max - 5);
335 EXPECT_EQ(rect.GetY(), 10);
336 EXPECT_EQ(rect.GetWidth(), 5);
337 EXPECT_EQ(rect.GetHeight(), 16);
338 EXPECT_FALSE(rect.IsEmpty());
339 }
340
341 {
342 IRect rect = IRect::MakeXYWH(min + 5, 10, -10, 16);
343
344 EXPECT_EQ(rect.GetLeft(), min + 5);
345 EXPECT_EQ(rect.GetTop(), 10);
346 EXPECT_EQ(rect.GetRight(), min);
347 EXPECT_EQ(rect.GetBottom(), 26);
348 EXPECT_EQ(rect.GetX(), min + 5);
349 EXPECT_EQ(rect.GetY(), 10);
350 EXPECT_EQ(rect.GetWidth(), -5);
351 EXPECT_EQ(rect.GetHeight(), 16);
352 EXPECT_TRUE(rect.IsEmpty());
353 }
354
355 {
356 IRect rect = IRect::MakeXYWH(5, max - 10, 10, 16);
357
358 EXPECT_EQ(rect.GetLeft(), 5);
359 EXPECT_EQ(rect.GetTop(), max - 10);
360 EXPECT_EQ(rect.GetRight(), 15);
361 EXPECT_EQ(rect.GetBottom(), max);
362 EXPECT_EQ(rect.GetX(), 5);
363 EXPECT_EQ(rect.GetY(), max - 10);
364 EXPECT_EQ(rect.GetWidth(), 10);
365 EXPECT_EQ(rect.GetHeight(), 10);
366 EXPECT_FALSE(rect.IsEmpty());
367 }
368
369 {
370 IRect rect = IRect::MakeXYWH(5, min + 10, 10, -16);
371
372 EXPECT_EQ(rect.GetLeft(), 5);
373 EXPECT_EQ(rect.GetTop(), min + 10);
374 EXPECT_EQ(rect.GetRight(), 15);
375 EXPECT_EQ(rect.GetBottom(), min);
376 EXPECT_EQ(rect.GetX(), 5);
377 EXPECT_EQ(rect.GetY(), min + 10);
378 EXPECT_EQ(rect.GetWidth(), 10);
379 EXPECT_EQ(rect.GetHeight(), -10);
380 EXPECT_TRUE(rect.IsEmpty());
381 }
382 }
383
384 TEST(RectTest, RectOverflowLTRB) {
385 auto min = std::numeric_limits<Scalar>::lowest();
386 auto max = std::numeric_limits<Scalar>::max();
387 auto inf = std::numeric_limits<Scalar>::infinity();
388
389 // 8 cases:
390 // finite negative X, max W
391 // ~min X, ~max W
392 // finite negative Y, max H
393 // ~min Y, ~max H
394 // finite positive X, min W
395 // ~min X, ~min W
396 // finite positive Y, min H
397 // ~min Y, ~min H
398
399 // a small finite value subtracted from a max value will remain max
400 // a very large finite value (like min) subtracted from max will go to inf
401
402 {
403 Rect rect = Rect::MakeLTRB(-5.0f, 10.0f, max, 25.0f);
404
405 EXPECT_EQ(rect.GetLeft(), -5.0f);
406 EXPECT_EQ(rect.GetTop(), 10.0f);
407 EXPECT_EQ(rect.GetRight(), max);
408 EXPECT_EQ(rect.GetBottom(), 25.0f);
409 EXPECT_EQ(rect.GetX(), -5.0f);
410 EXPECT_EQ(rect.GetY(), 10.0f);
411 EXPECT_EQ(rect.GetWidth(), max);
412 EXPECT_EQ(rect.GetHeight(), 15.0f);
413 EXPECT_FALSE(rect.IsEmpty());
414 EXPECT_TRUE(rect.IsFinite());
415 }
416
417 {
418 Rect rect = Rect::MakeLTRB(min + 5.0f, 10.0f, max - 5.0f, 25.0f);
419
420 EXPECT_EQ(rect.GetLeft(), min + 5.0f);
421 EXPECT_EQ(rect.GetTop(), 10.0f);
422 EXPECT_EQ(rect.GetRight(), max - 5.0f);
423 EXPECT_EQ(rect.GetBottom(), 25.0f);
424 EXPECT_EQ(rect.GetX(), min + 5.0f);
425 EXPECT_EQ(rect.GetY(), 10.0f);
426 EXPECT_EQ(rect.GetWidth(), inf);
427 EXPECT_EQ(rect.GetHeight(), 15.0f);
428 EXPECT_FALSE(rect.IsEmpty());
429 EXPECT_TRUE(rect.IsFinite());
430 }
431
432 {
433 Rect rect = Rect::MakeLTRB(5.0f, -10.0f, 20.0f, max);
434
435 EXPECT_EQ(rect.GetLeft(), 5.0f);
436 EXPECT_EQ(rect.GetTop(), -10.0f);
437 EXPECT_EQ(rect.GetRight(), 20.0f);
438 EXPECT_EQ(rect.GetBottom(), max);
439 EXPECT_EQ(rect.GetX(), 5.0f);
440 EXPECT_EQ(rect.GetY(), -10.0f);
441 EXPECT_EQ(rect.GetWidth(), 15.0f);
442 EXPECT_EQ(rect.GetHeight(), max);
443 EXPECT_FALSE(rect.IsEmpty());
444 EXPECT_TRUE(rect.IsFinite());
445 }
446
447 {
448 Rect rect = Rect::MakeLTRB(5.0f, min + 10.0f, 20.0f, max - 15.0f);
449
450 EXPECT_EQ(rect.GetLeft(), 5.0f);
451 EXPECT_EQ(rect.GetTop(), min + 10.0f);
452 EXPECT_EQ(rect.GetRight(), 20.0f);
453 EXPECT_EQ(rect.GetBottom(), max - 15.0f);
454 EXPECT_EQ(rect.GetX(), 5.0f);
455 EXPECT_EQ(rect.GetY(), min + 10.0f);
456 EXPECT_EQ(rect.GetWidth(), 15.0f);
457 EXPECT_EQ(rect.GetHeight(), inf);
458 EXPECT_FALSE(rect.IsEmpty());
459 EXPECT_TRUE(rect.IsFinite());
460 }
461
462 {
463 Rect rect = Rect::MakeLTRB(5.0f, 10.0f, min, 25.0f);
464
465 EXPECT_EQ(rect.GetLeft(), 5.0f);
466 EXPECT_EQ(rect.GetTop(), 10.0f);
467 EXPECT_EQ(rect.GetRight(), min);
468 EXPECT_EQ(rect.GetBottom(), 25.0f);
469 EXPECT_EQ(rect.GetX(), 5.0f);
470 EXPECT_EQ(rect.GetY(), 10.0f);
471 EXPECT_EQ(rect.GetWidth(), min);
472 EXPECT_EQ(rect.GetHeight(), 15.0f);
473 EXPECT_TRUE(rect.IsEmpty());
474 EXPECT_TRUE(rect.IsFinite());
475 }
476
477 {
478 Rect rect = Rect::MakeLTRB(max - 5.0f, 10.0f, min + 10.0f, 25.0f);
479
480 EXPECT_EQ(rect.GetLeft(), max - 5.0f);
481 EXPECT_EQ(rect.GetTop(), 10.0f);
482 EXPECT_EQ(rect.GetRight(), min + 10.0f);
483 EXPECT_EQ(rect.GetBottom(), 25.0f);
484 EXPECT_EQ(rect.GetX(), max - 5.0f);
485 EXPECT_EQ(rect.GetY(), 10.0f);
486 EXPECT_EQ(rect.GetWidth(), -inf);
487 EXPECT_EQ(rect.GetHeight(), 15.0f);
488 EXPECT_TRUE(rect.IsEmpty());
489 EXPECT_TRUE(rect.IsFinite());
490 }
491
492 {
493 Rect rect = Rect::MakeLTRB(5.0f, 10.0f, 20.0f, min);
494
495 EXPECT_EQ(rect.GetLeft(), 5.0f);
496 EXPECT_EQ(rect.GetTop(), 10.0f);
497 EXPECT_EQ(rect.GetRight(), 20.0f);
498 EXPECT_EQ(rect.GetBottom(), min);
499 EXPECT_EQ(rect.GetX(), 5.0f);
500 EXPECT_EQ(rect.GetY(), 10.0f);
501 EXPECT_EQ(rect.GetWidth(), 15.0f);
502 EXPECT_EQ(rect.GetHeight(), min);
503 EXPECT_TRUE(rect.IsEmpty());
504 EXPECT_TRUE(rect.IsFinite());
505 }
506
507 {
508 Rect rect = Rect::MakeLTRB(5.0f, max - 5.0f, 20.0f, min + 10.0f);
509
510 EXPECT_EQ(rect.GetLeft(), 5.0f);
511 EXPECT_EQ(rect.GetTop(), max - 5.0f);
512 EXPECT_EQ(rect.GetRight(), 20.0f);
513 EXPECT_EQ(rect.GetBottom(), min + 10.0f);
514 EXPECT_EQ(rect.GetX(), 5.0f);
515 EXPECT_EQ(rect.GetY(), max - 5.0f);
516 EXPECT_EQ(rect.GetWidth(), 15.0f);
517 EXPECT_EQ(rect.GetHeight(), -inf);
518 EXPECT_TRUE(rect.IsEmpty());
519 EXPECT_TRUE(rect.IsFinite());
520 }
521 }
522
523 TEST(RectTest, IRectOverflowLTRB) {
524 auto min = std::numeric_limits<int64_t>::min();
525 auto max = std::numeric_limits<int64_t>::max();
526
527 // 4 cases
528 // negative l, r near max takes width past max
529 // positive l, r near min takes width below min
530 // negative t, b near max takes width past max
531 // positive t, b near min takes width below min
532
533 {
534 IRect rect = IRect::MakeLTRB(-10, 10, max - 5, 26);
535
536 EXPECT_EQ(rect.GetLeft(), -10);
537 EXPECT_EQ(rect.GetTop(), 10);
538 EXPECT_EQ(rect.GetRight(), max - 5);
539 EXPECT_EQ(rect.GetBottom(), 26);
540 EXPECT_EQ(rect.GetX(), -10);
541 EXPECT_EQ(rect.GetY(), 10);
542 EXPECT_EQ(rect.GetWidth(), max);
543 EXPECT_EQ(rect.GetHeight(), 16);
544 EXPECT_FALSE(rect.IsEmpty());
545 }
546
547 {
548 IRect rect = IRect::MakeLTRB(10, 10, min + 5, 26);
549
550 EXPECT_EQ(rect.GetLeft(), 10);
551 EXPECT_EQ(rect.GetTop(), 10);
552 EXPECT_EQ(rect.GetRight(), min + 5);
553 EXPECT_EQ(rect.GetBottom(), 26);
554 EXPECT_EQ(rect.GetX(), 10);
555 EXPECT_EQ(rect.GetY(), 10);
556 EXPECT_EQ(rect.GetWidth(), min);
557 EXPECT_EQ(rect.GetHeight(), 16);
558 EXPECT_TRUE(rect.IsEmpty());
559 }
560
561 {
562 IRect rect = IRect::MakeLTRB(5, -10, 15, max - 5);
563
564 EXPECT_EQ(rect.GetLeft(), 5);
565 EXPECT_EQ(rect.GetTop(), -10);
566 EXPECT_EQ(rect.GetRight(), 15);
567 EXPECT_EQ(rect.GetBottom(), max - 5);
568 EXPECT_EQ(rect.GetX(), 5);
569 EXPECT_EQ(rect.GetY(), -10);
570 EXPECT_EQ(rect.GetWidth(), 10);
571 EXPECT_EQ(rect.GetHeight(), max);
572 EXPECT_FALSE(rect.IsEmpty());
573 }
574
575 {
576 IRect rect = IRect::MakeLTRB(5, 10, 15, min + 5);
577
578 EXPECT_EQ(rect.GetLeft(), 5);
579 EXPECT_EQ(rect.GetTop(), 10);
580 EXPECT_EQ(rect.GetRight(), 15);
581 EXPECT_EQ(rect.GetBottom(), min + 5);
582 EXPECT_EQ(rect.GetX(), 5);
583 EXPECT_EQ(rect.GetY(), 10);
584 EXPECT_EQ(rect.GetWidth(), 10);
585 EXPECT_EQ(rect.GetHeight(), min);
586 EXPECT_TRUE(rect.IsEmpty());
587 }
588 }
589
590 TEST(RectTest, RectMakeSize) {
591 {
592 Size s(100, 200);
593 Rect r = Rect::MakeSize(s);
594 Rect expected = Rect::MakeLTRB(0, 0, 100, 200);
595 EXPECT_RECT_NEAR(r, expected);
596 }
597
598 {
599 ISize s(100, 200);
600 Rect r = Rect::MakeSize(s);
601 Rect expected = Rect::MakeLTRB(0, 0, 100, 200);
602 EXPECT_RECT_NEAR(r, expected);
603 }
604
605 {
606 Size s(100, 200);
607 IRect r = IRect::MakeSize(s);
608 IRect expected = IRect::MakeLTRB(0, 0, 100, 200);
609 EXPECT_EQ(r, expected);
610 }
611
612 {
613 ISize s(100, 200);
614 IRect r = IRect::MakeSize(s);
615 IRect expected = IRect::MakeLTRB(0, 0, 100, 200);
616 EXPECT_EQ(r, expected);
617 }
618 }
619
620 TEST(RectTest, RectMakeMaximum) {
621 Rect rect = Rect::MakeMaximum();
622 auto inf = std::numeric_limits<Scalar>::infinity();
623 auto min = std::numeric_limits<Scalar>::lowest();
624 auto max = std::numeric_limits<Scalar>::max();
625
626 EXPECT_EQ(rect.GetLeft(), min);
627 EXPECT_EQ(rect.GetTop(), min);
628 EXPECT_EQ(rect.GetRight(), max);
629 EXPECT_EQ(rect.GetBottom(), max);
630 EXPECT_EQ(rect.GetX(), min);
631 EXPECT_EQ(rect.GetY(), min);
632 EXPECT_EQ(rect.GetWidth(), inf);
633 EXPECT_EQ(rect.GetHeight(), inf);
634 EXPECT_FALSE(rect.IsEmpty());
635 EXPECT_TRUE(rect.IsFinite());
636 }
637
638 TEST(RectTest, IRectMakeMaximum) {
639 IRect rect = IRect::MakeMaximum();
640 auto min = std::numeric_limits<int64_t>::min();
641 auto max = std::numeric_limits<int64_t>::max();
642
643 EXPECT_EQ(rect.GetLeft(), min);
644 EXPECT_EQ(rect.GetTop(), min);
645 EXPECT_EQ(rect.GetRight(), max);
646 EXPECT_EQ(rect.GetBottom(), max);
647 EXPECT_EQ(rect.GetX(), min);
648 EXPECT_EQ(rect.GetY(), min);
649 EXPECT_EQ(rect.GetWidth(), max);
650 EXPECT_EQ(rect.GetHeight(), max);
651 EXPECT_FALSE(rect.IsEmpty());
652 }
653
654 TEST(RectTest, RectFromRect) {
655 EXPECT_EQ(Rect(Rect::MakeXYWH(2, 3, 7, 15)),
656 Rect::MakeXYWH(2.0, 3.0, 7.0, 15.0));
657 EXPECT_EQ(Rect(Rect::MakeLTRB(2, 3, 7, 15)),
658 Rect::MakeLTRB(2.0, 3.0, 7.0, 15.0));
659 }
660
661 TEST(RectTest, IRectFromIRect) {
662 EXPECT_EQ(IRect(IRect::MakeXYWH(2, 3, 7, 15)), //
663 IRect::MakeXYWH(2, 3, 7, 15));
664 EXPECT_EQ(IRect(IRect::MakeLTRB(2, 3, 7, 15)), //
665 IRect::MakeLTRB(2, 3, 7, 15));
666 }
667
668 TEST(RectTest, RectCopy) {
669 // Using fractional-power-of-2 friendly values for equality tests
670 Rect rect = Rect::MakeLTRB(5.125f, 10.25f, 20.625f, 25.375f);
671 Rect copy = rect;
672
673 EXPECT_EQ(rect, copy);
674 EXPECT_EQ(copy.GetLeft(), 5.125f);
675 EXPECT_EQ(copy.GetTop(), 10.25f);
676 EXPECT_EQ(copy.GetRight(), 20.625f);
677 EXPECT_EQ(copy.GetBottom(), 25.375f);
678 EXPECT_EQ(copy.GetX(), 5.125f);
679 EXPECT_EQ(copy.GetY(), 10.25f);
680 EXPECT_EQ(copy.GetWidth(), 15.5f);
681 EXPECT_EQ(copy.GetHeight(), 15.125f);
682 EXPECT_FALSE(copy.IsEmpty());
683 EXPECT_TRUE(copy.IsFinite());
684 }
685
686 TEST(RectTest, IRectCopy) {
687 IRect rect = IRect::MakeLTRB(5, 10, 20, 25);
688 IRect copy = rect;
689
690 EXPECT_EQ(rect, copy);
691 EXPECT_EQ(copy.GetLeft(), 5);
692 EXPECT_EQ(copy.GetTop(), 10);
693 EXPECT_EQ(copy.GetRight(), 20);
694 EXPECT_EQ(copy.GetBottom(), 25);
695 EXPECT_EQ(copy.GetX(), 5);
696 EXPECT_EQ(copy.GetY(), 10);
697 EXPECT_EQ(copy.GetWidth(), 15);
698 EXPECT_EQ(copy.GetHeight(), 15);
699 EXPECT_FALSE(copy.IsEmpty());
700 }
701
702 TEST(RectTest, RectOriginSizeXYWHGetters) {
703 {
704 Rect r = Rect::MakeOriginSize({10, 20}, {50, 40});
705 EXPECT_EQ(r.GetOrigin(), Point(10, 20));
706 EXPECT_EQ(r.GetSize(), Size(50, 40));
707 EXPECT_EQ(r.GetX(), 10);
708 EXPECT_EQ(r.GetY(), 20);
709 EXPECT_EQ(r.GetWidth(), 50);
710 EXPECT_EQ(r.GetHeight(), 40);
711 auto expected_array = std::array<Scalar, 4>{10, 20, 50, 40};
712 EXPECT_EQ(r.GetXYWH(), expected_array);
713 }
714
715 {
716 Rect r = Rect::MakeLTRB(10, 20, 50, 40);
717 EXPECT_EQ(r.GetOrigin(), Point(10, 20));
718 EXPECT_EQ(r.GetSize(), Size(40, 20));
719 EXPECT_EQ(r.GetX(), 10);
720 EXPECT_EQ(r.GetY(), 20);
721 EXPECT_EQ(r.GetWidth(), 40);
722 EXPECT_EQ(r.GetHeight(), 20);
723 auto expected_array = std::array<Scalar, 4>{10, 20, 40, 20};
724 EXPECT_EQ(r.GetXYWH(), expected_array);
725 }
726 }
727
728 TEST(RectTest, IRectOriginSizeXYWHGetters) {
729 {
730 IRect r = IRect::MakeOriginSize({10, 20}, {50, 40});
731 EXPECT_EQ(r.GetOrigin(), IPoint(10, 20));
732 EXPECT_EQ(r.GetSize(), ISize(50, 40));
733 EXPECT_EQ(r.GetX(), 10);
734 EXPECT_EQ(r.GetY(), 20);
735 EXPECT_EQ(r.GetWidth(), 50);
736 EXPECT_EQ(r.GetHeight(), 40);
737 auto expected_array = std::array<int64_t, 4>{10, 20, 50, 40};
738 EXPECT_EQ(r.GetXYWH(), expected_array);
739 }
740
741 {
742 IRect r = IRect::MakeLTRB(10, 20, 50, 40);
743 EXPECT_EQ(r.GetOrigin(), IPoint(10, 20));
744 EXPECT_EQ(r.GetSize(), ISize(40, 20));
745 EXPECT_EQ(r.GetX(), 10);
746 EXPECT_EQ(r.GetY(), 20);
747 EXPECT_EQ(r.GetWidth(), 40);
748 EXPECT_EQ(r.GetHeight(), 20);
749 auto expected_array = std::array<int64_t, 4>{10, 20, 40, 20};
750 EXPECT_EQ(r.GetXYWH(), expected_array);
751 }
752 }
753
754 TEST(RectTest, RectRoundOutEmpty) {
755 Rect rect;
756
757 EXPECT_EQ(Rect::RoundOut(rect), Rect());
758
759 EXPECT_EQ(IRect::RoundOut(rect), IRect());
760 }
761
762 TEST(RectTest, RectRoundOutSimple) {
763 Rect rect = Rect::MakeLTRB(5.125f, 10.75f, 20.625f, 25.375f);
764
765 EXPECT_EQ(Rect::RoundOut(rect), Rect::MakeLTRB(5.0f, 10.0f, 21.0f, 26.0f));
766
767 EXPECT_EQ(IRect::RoundOut(rect), IRect::MakeLTRB(5, 10, 21, 26));
768 }
769
770 TEST(RectTest, RectRoundOutToIRectHuge) {
771 auto test = [](int corners) {
772 EXPECT_TRUE(corners >= 0 && corners <= 0xf);
773 Scalar l, t, r, b;
774 int64_t il, it, ir, ib;
775 l = il = 50;
776 t = it = 50;
777 r = ir = 80;
778 b = ib = 80;
779 if ((corners & (1 << 0)) != 0) {
780 l = -1E20;
781 il = std::numeric_limits<int64_t>::min();
782 }
783 if ((corners & (1 << 1)) != 0) {
784 t = -1E20;
785 it = std::numeric_limits<int64_t>::min();
786 }
787 if ((corners & (1 << 2)) != 0) {
788 r = +1E20;
789 ir = std::numeric_limits<int64_t>::max();
790 }
791 if ((corners & (1 << 3)) != 0) {
792 b = +1E20;
793 ib = std::numeric_limits<int64_t>::max();
794 }
795
796 Rect rect = Rect::MakeLTRB(l, t, r, b);
797 IRect irect = IRect::RoundOut(rect);
798 EXPECT_EQ(irect.GetLeft(), il) << corners;
799 EXPECT_EQ(irect.GetTop(), it) << corners;
800 EXPECT_EQ(irect.GetRight(), ir) << corners;
801 EXPECT_EQ(irect.GetBottom(), ib) << corners;
802 };
803
804 for (int corners = 0; corners <= 15; corners++) {
805 test(corners);
806 }
807 }
808
809 TEST(RectTest, RectDoesNotIntersectEmpty) {
810 Rect rect = Rect::MakeLTRB(50, 50, 100, 100);
811
812 auto test = [&rect](Scalar l, Scalar t, Scalar r, Scalar b,
813 const std::string& label) {
814 EXPECT_FALSE(rect.IntersectsWithRect(Rect::MakeLTRB(l, b, r, t)))
815 << label << " with Top/Bottom swapped";
816 EXPECT_FALSE(rect.IntersectsWithRect(Rect::MakeLTRB(r, b, l, t)))
817 << label << " with Left/Right swapped";
818 EXPECT_FALSE(rect.IntersectsWithRect(Rect::MakeLTRB(r, t, l, b)))
819 << label << " with all sides swapped";
820 };
821
822 test(20, 20, 30, 30, "Above and Left");
823 test(70, 20, 80, 30, "Above");
824 test(120, 20, 130, 30, "Above and Right");
825 test(120, 70, 130, 80, "Right");
826 test(120, 120, 130, 130, "Below and Right");
827 test(70, 120, 80, 130, "Below");
828 test(20, 120, 30, 130, "Below and Left");
829 test(20, 70, 30, 80, "Left");
830
831 test(70, 70, 80, 80, "Inside");
832
833 test(40, 70, 60, 80, "Straddling Left");
834 test(70, 40, 80, 60, "Straddling Top");
835 test(90, 70, 110, 80, "Straddling Right");
836 test(70, 90, 80, 110, "Straddling Bottom");
837 }
838
839 TEST(RectTest, IRectDoesNotIntersectEmpty) {
840 IRect rect = IRect::MakeLTRB(50, 50, 100, 100);
841
842 auto test = [&rect](int64_t l, int64_t t, int64_t r, int64_t b,
843 const std::string& label) {
844 EXPECT_FALSE(rect.IntersectsWithRect(IRect::MakeLTRB(l, b, r, t)))
845 << label << " with Top/Bottom swapped";
846 EXPECT_FALSE(rect.IntersectsWithRect(IRect::MakeLTRB(r, b, l, t)))
847 << label << " with Left/Right swapped";
848 EXPECT_FALSE(rect.IntersectsWithRect(IRect::MakeLTRB(r, t, l, b)))
849 << label << " with all sides swapped";
850 };
851
852 test(20, 20, 30, 30, "Above and Left");
853 test(70, 20, 80, 30, "Above");
854 test(120, 20, 130, 30, "Above and Right");
855 test(120, 70, 130, 80, "Right");
856 test(120, 120, 130, 130, "Below and Right");
857 test(70, 120, 80, 130, "Below");
858 test(20, 120, 30, 130, "Below and Left");
859 test(20, 70, 30, 80, "Left");
860
861 test(70, 70, 80, 80, "Inside");
862
863 test(40, 70, 60, 80, "Straddling Left");
864 test(70, 40, 80, 60, "Straddling Top");
865 test(90, 70, 110, 80, "Straddling Right");
866 test(70, 90, 80, 110, "Straddling Bottom");
867 }
868
869 TEST(RectTest, EmptyRectDoesNotIntersect) {
870 Rect rect = Rect::MakeLTRB(50, 50, 100, 100);
871
872 auto test = [&rect](Scalar l, Scalar t, Scalar r, Scalar b,
873 const std::string& label) {
874 EXPECT_FALSE(Rect::MakeLTRB(l, b, r, t).IntersectsWithRect(rect))
875 << label << " with Top/Bottom swapped";
876 EXPECT_FALSE(Rect::MakeLTRB(r, b, l, t).IntersectsWithRect(rect))
877 << label << " with Left/Right swapped";
878 EXPECT_FALSE(Rect::MakeLTRB(r, t, l, b).IntersectsWithRect(rect))
879 << label << " with all sides swapped";
880 };
881
882 test(20, 20, 30, 30, "Above and Left");
883 test(70, 20, 80, 30, "Above");
884 test(120, 20, 130, 30, "Above and Right");
885 test(120, 70, 130, 80, "Right");
886 test(120, 120, 130, 130, "Below and Right");
887 test(70, 120, 80, 130, "Below");
888 test(20, 120, 30, 130, "Below and Left");
889 test(20, 70, 30, 80, "Left");
890
891 test(70, 70, 80, 80, "Inside");
892
893 test(40, 70, 60, 80, "Straddling Left");
894 test(70, 40, 80, 60, "Straddling Top");
895 test(90, 70, 110, 80, "Straddling Right");
896 test(70, 90, 80, 110, "Straddling Bottom");
897 }
898
899 TEST(RectTest, EmptyIRectDoesNotIntersect) {
900 IRect rect = IRect::MakeLTRB(50, 50, 100, 100);
901
902 auto test = [&rect](int64_t l, int64_t t, int64_t r, int64_t b,
903 const std::string& label) {
904 EXPECT_FALSE(IRect::MakeLTRB(l, b, r, t).IntersectsWithRect(rect))
905 << label << " with Top/Bottom swapped";
906 EXPECT_FALSE(IRect::MakeLTRB(r, b, l, t).IntersectsWithRect(rect))
907 << label << " with Left/Right swapped";
908 EXPECT_FALSE(IRect::MakeLTRB(r, t, l, b).IntersectsWithRect(rect))
909 << label << " with all sides swapped";
910 };
911
912 test(20, 20, 30, 30, "Above and Left");
913 test(70, 20, 80, 30, "Above");
914 test(120, 20, 130, 30, "Above and Right");
915 test(120, 70, 130, 80, "Right");
916 test(120, 120, 130, 130, "Below and Right");
917 test(70, 120, 80, 130, "Below");
918 test(20, 120, 30, 130, "Below and Left");
919 test(20, 70, 30, 80, "Left");
920
921 test(70, 70, 80, 80, "Inside");
922
923 test(40, 70, 60, 80, "Straddling Left");
924 test(70, 40, 80, 60, "Straddling Top");
925 test(90, 70, 110, 80, "Straddling Right");
926 test(70, 90, 80, 110, "Straddling Bottom");
927 }
928
929 TEST(RectTest, RectScale) {
930 auto test1 = [](Rect rect, Scalar scale) {
931 Rect expected = Rect::MakeXYWH(rect.GetX() * scale, //
932 rect.GetY() * scale, //
933 rect.GetWidth() * scale, //
934 rect.GetHeight() * scale);
935
936 EXPECT_RECT_NEAR(rect.Scale(scale), expected) //
937 << rect << " * " << scale;
938 EXPECT_RECT_NEAR(rect.Scale(scale, scale), expected) //
939 << rect << " * " << scale;
940 EXPECT_RECT_NEAR(rect.Scale(Point(scale, scale)), expected) //
941 << rect << " * " << scale;
942 EXPECT_RECT_NEAR(rect.Scale(Size(scale, scale)), expected) //
943 << rect << " * " << scale;
944 };
945
946 auto test2 = [&test1](Rect rect, Scalar scale_x, Scalar scale_y) {
947 Rect expected = Rect::MakeXYWH(rect.GetX() * scale_x, //
948 rect.GetY() * scale_y, //
949 rect.GetWidth() * scale_x, //
950 rect.GetHeight() * scale_y);
951
952 EXPECT_RECT_NEAR(rect.Scale(scale_x, scale_y), expected) //
953 << rect << " * " << scale_x << ", " << scale_y;
954 EXPECT_RECT_NEAR(rect.Scale(Point(scale_x, scale_y)), expected) //
955 << rect << " * " << scale_x << ", " << scale_y;
956 EXPECT_RECT_NEAR(rect.Scale(Size(scale_x, scale_y)), expected) //
957 << rect << " * " << scale_x << ", " << scale_y;
958
959 test1(rect, scale_x);
960 test1(rect, scale_y);
961 };
962
963 test2(Rect::MakeLTRB(10, 15, 100, 150), 1.0, 0.0);
964 test2(Rect::MakeLTRB(10, 15, 100, 150), 0.0, 1.0);
965 test2(Rect::MakeLTRB(10, 15, 100, 150), 0.0, 0.0);
966 test2(Rect::MakeLTRB(10, 15, 100, 150), 2.5, 3.5);
967 test2(Rect::MakeLTRB(10, 15, 100, 150), 3.5, 2.5);
968 test2(Rect::MakeLTRB(10, 15, -100, 150), 2.5, 3.5);
969 test2(Rect::MakeLTRB(10, 15, 100, -150), 2.5, 3.5);
970 test2(Rect::MakeLTRB(10, 15, 100, 150), -2.5, 3.5);
971 test2(Rect::MakeLTRB(10, 15, 100, 150), 2.5, -3.5);
972 }
973
974 TEST(RectTest, IRectScale) {
975 auto test1 = [](IRect rect, int64_t scale) {
976 IRect expected = IRect::MakeXYWH(rect.GetX() * scale, //
977 rect.GetY() * scale, //
978 rect.GetWidth() * scale, //
979 rect.GetHeight() * scale);
980
981 EXPECT_EQ(rect.Scale(scale), expected) //
982 << rect << " * " << scale;
983 EXPECT_EQ(rect.Scale(scale, scale), expected) //
984 << rect << " * " << scale;
985 EXPECT_EQ(rect.Scale(IPoint(scale, scale)), expected) //
986 << rect << " * " << scale;
987 EXPECT_EQ(rect.Scale(ISize(scale, scale)), expected) //
988 << rect << " * " << scale;
989 };
990
991 auto test2 = [&test1](IRect rect, int64_t scale_x, int64_t scale_y) {
992 IRect expected = IRect::MakeXYWH(rect.GetX() * scale_x, //
993 rect.GetY() * scale_y, //
994 rect.GetWidth() * scale_x, //
995 rect.GetHeight() * scale_y);
996
997 EXPECT_EQ(rect.Scale(scale_x, scale_y), expected) //
998 << rect << " * " << scale_x << ", " << scale_y;
999 EXPECT_EQ(rect.Scale(IPoint(scale_x, scale_y)), expected) //
1000 << rect << " * " << scale_x << ", " << scale_y;
1001 EXPECT_EQ(rect.Scale(ISize(scale_x, scale_y)), expected) //
1002 << rect << " * " << scale_x << ", " << scale_y;
1003
1004 test1(rect, scale_x);
1005 test1(rect, scale_y);
1006 };
1007
1008 test2(IRect::MakeLTRB(10, 15, 100, 150), 2, 3);
1009 test2(IRect::MakeLTRB(10, 15, 100, 150), 3, 2);
1010 test2(IRect::MakeLTRB(10, 15, -100, 150), 2, 3);
1011 test2(IRect::MakeLTRB(10, 15, 100, -150), 2, 3);
1012 test2(IRect::MakeLTRB(10, 15, 100, 150), -2, 3);
1013 test2(IRect::MakeLTRB(10, 15, 100, 150), 2, -3);
1014 }
1015
1016 TEST(RectTest, RectArea) {
1017 EXPECT_EQ(Rect::MakeXYWH(0, 0, 100, 200).Area(), 20000);
1018 EXPECT_EQ(Rect::MakeXYWH(10, 20, 100, 200).Area(), 20000);
1019 EXPECT_EQ(Rect::MakeXYWH(0, 0, 200, 100).Area(), 20000);
1020 EXPECT_EQ(Rect::MakeXYWH(10, 20, 200, 100).Area(), 20000);
1021 EXPECT_EQ(Rect::MakeXYWH(0, 0, 100, 100).Area(), 10000);
1022 EXPECT_EQ(Rect::MakeXYWH(10, 20, 100, 100).Area(), 10000);
1023 }
1024
1025 TEST(RectTest, IRectArea) {
1026 EXPECT_EQ(IRect::MakeXYWH(0, 0, 100, 200).Area(), 20000);
1027 EXPECT_EQ(IRect::MakeXYWH(10, 20, 100, 200).Area(), 20000);
1028 EXPECT_EQ(IRect::MakeXYWH(0, 0, 200, 100).Area(), 20000);
1029 EXPECT_EQ(IRect::MakeXYWH(10, 20, 200, 100).Area(), 20000);
1030 EXPECT_EQ(IRect::MakeXYWH(0, 0, 100, 100).Area(), 10000);
1031 EXPECT_EQ(IRect::MakeXYWH(10, 20, 100, 100).Area(), 10000);
1032 }
1033
1034 TEST(RectTest, RectGetNormalizingTransform) {
1035 {
1036 // Checks for expected matrix values
1037
1038 auto r = Rect::MakeXYWH(100, 200, 200, 400);
1039
1040 EXPECT_EQ(r.GetNormalizingTransform(),
1041 Matrix::MakeScale({0.005, 0.0025, 1.0}) *
1042 Matrix::MakeTranslation({-100, -200}));
1043 }
1044
1045 {
1046 // Checks for expected transform of points relative to the rect
1047
1048 auto r = Rect::MakeLTRB(300, 500, 400, 700);
1049 auto m = r.GetNormalizingTransform();
1050
1051 // The 4 corners of the rect => (0, 0) to (1, 1)
1052 EXPECT_EQ(m * Point(300, 500), Point(0, 0));
1053 EXPECT_EQ(m * Point(400, 500), Point(1, 0));
1054 EXPECT_EQ(m * Point(400, 700), Point(1, 1));
1055 EXPECT_EQ(m * Point(300, 700), Point(0, 1));
1056
1057 // The center => (0.5, 0.5)
1058 EXPECT_EQ(m * Point(350, 600), Point(0.5, 0.5));
1059
1060 // Outside the 4 corners => (-1, -1) to (2, 2)
1061 EXPECT_EQ(m * Point(200, 300), Point(-1, -1));
1062 EXPECT_EQ(m * Point(500, 300), Point(2, -1));
1063 EXPECT_EQ(m * Point(500, 900), Point(2, 2));
1064 EXPECT_EQ(m * Point(200, 900), Point(-1, 2));
1065 }
1066
1067 {
1068 // Checks for behavior with empty rects
1069
1070 auto zero = Matrix::MakeScale({0.0, 0.0, 1.0});
1071
1072 // Empty for width and/or height == 0
1073 EXPECT_EQ(Rect::MakeXYWH(10, 10, 0, 10).GetNormalizingTransform(), zero);
1074 EXPECT_EQ(Rect::MakeXYWH(10, 10, 10, 0).GetNormalizingTransform(), zero);
1075 EXPECT_EQ(Rect::MakeXYWH(10, 10, 0, 0).GetNormalizingTransform(), zero);
1076
1077 // Empty for width and/or height < 0
1078 EXPECT_EQ(Rect::MakeXYWH(10, 10, -1, 10).GetNormalizingTransform(), zero);
1079 EXPECT_EQ(Rect::MakeXYWH(10, 10, 10, -1).GetNormalizingTransform(), zero);
1080 EXPECT_EQ(Rect::MakeXYWH(10, 10, -1, -1).GetNormalizingTransform(), zero);
1081 }
1082
1083 {
1084 // Checks for behavior with non-finite rects
1085
1086 auto z = Matrix::MakeScale({0.0, 0.0, 1.0});
1087 auto nan = std::numeric_limits<Scalar>::quiet_NaN();
1088 auto inf = std::numeric_limits<Scalar>::infinity();
1089
1090 // Non-finite for width and/or height == nan
1091 EXPECT_EQ(Rect::MakeXYWH(10, 10, nan, 10).GetNormalizingTransform(), z);
1092 EXPECT_EQ(Rect::MakeXYWH(10, 10, 10, nan).GetNormalizingTransform(), z);
1093 EXPECT_EQ(Rect::MakeXYWH(10, 10, nan, nan).GetNormalizingTransform(), z);
1094
1095 // Non-finite for width and/or height == inf
1096 EXPECT_EQ(Rect::MakeXYWH(10, 10, inf, 10).GetNormalizingTransform(), z);
1097 EXPECT_EQ(Rect::MakeXYWH(10, 10, 10, inf).GetNormalizingTransform(), z);
1098 EXPECT_EQ(Rect::MakeXYWH(10, 10, inf, inf).GetNormalizingTransform(), z);
1099
1100 // Non-finite for width and/or height == -inf
1101 EXPECT_EQ(Rect::MakeXYWH(10, 10, -inf, 10).GetNormalizingTransform(), z);
1102 EXPECT_EQ(Rect::MakeXYWH(10, 10, 10, -inf).GetNormalizingTransform(), z);
1103 EXPECT_EQ(Rect::MakeXYWH(10, 10, -inf, -inf).GetNormalizingTransform(), z);
1104
1105 // Non-finite for origin X and/or Y == nan
1106 EXPECT_EQ(Rect::MakeXYWH(nan, 10, 10, 10).GetNormalizingTransform(), z);
1107 EXPECT_EQ(Rect::MakeXYWH(10, nan, 10, 10).GetNormalizingTransform(), z);
1108 EXPECT_EQ(Rect::MakeXYWH(nan, nan, 10, 10).GetNormalizingTransform(), z);
1109
1110 // Non-finite for origin X and/or Y == inf
1111 EXPECT_EQ(Rect::MakeXYWH(inf, 10, 10, 10).GetNormalizingTransform(), z);
1112 EXPECT_EQ(Rect::MakeXYWH(10, inf, 10, 10).GetNormalizingTransform(), z);
1113 EXPECT_EQ(Rect::MakeXYWH(inf, inf, 10, 10).GetNormalizingTransform(), z);
1114
1115 // Non-finite for origin X and/or Y == -inf
1116 EXPECT_EQ(Rect::MakeXYWH(-inf, 10, 10, 10).GetNormalizingTransform(), z);
1117 EXPECT_EQ(Rect::MakeXYWH(10, -inf, 10, 10).GetNormalizingTransform(), z);
1118 EXPECT_EQ(Rect::MakeXYWH(-inf, -inf, 10, 10).GetNormalizingTransform(), z);
1119 }
1120 }
1121
1122 TEST(RectTest, IRectGetNormalizingTransform) {
1123 {
1124 // Checks for expected matrix values
1125
1126 auto r = IRect::MakeXYWH(100, 200, 200, 400);
1127
1128 EXPECT_EQ(r.GetNormalizingTransform(),
1129 Matrix::MakeScale({0.005, 0.0025, 1.0}) *
1130 Matrix::MakeTranslation({-100, -200}));
1131 }
1132
1133 {
1134 // Checks for expected transform of points relative to the rect
1135
1136 auto r = IRect::MakeLTRB(300, 500, 400, 700);
1137 auto m = r.GetNormalizingTransform();
1138
1139 // The 4 corners of the rect => (0, 0) to (1, 1)
1140 EXPECT_EQ(m * Point(300, 500), Point(0, 0));
1141 EXPECT_EQ(m * Point(400, 500), Point(1, 0));
1142 EXPECT_EQ(m * Point(400, 700), Point(1, 1));
1143 EXPECT_EQ(m * Point(300, 700), Point(0, 1));
1144
1145 // The center => (0.5, 0.5)
1146 EXPECT_EQ(m * Point(350, 600), Point(0.5, 0.5));
1147
1148 // Outside the 4 corners => (-1, -1) to (2, 2)
1149 EXPECT_EQ(m * Point(200, 300), Point(-1, -1));
1150 EXPECT_EQ(m * Point(500, 300), Point(2, -1));
1151 EXPECT_EQ(m * Point(500, 900), Point(2, 2));
1152 EXPECT_EQ(m * Point(200, 900), Point(-1, 2));
1153 }
1154
1155 {
1156 // Checks for behavior with empty rects
1157
1158 auto zero = Matrix::MakeScale({0.0, 0.0, 1.0});
1159
1160 // Empty for width and/or height == 0
1161 EXPECT_EQ(IRect::MakeXYWH(10, 10, 0, 10).GetNormalizingTransform(), zero);
1162 EXPECT_EQ(IRect::MakeXYWH(10, 10, 10, 0).GetNormalizingTransform(), zero);
1163 EXPECT_EQ(IRect::MakeXYWH(10, 10, 0, 0).GetNormalizingTransform(), zero);
1164
1165 // Empty for width and/or height < 0
1166 EXPECT_EQ(IRect::MakeXYWH(10, 10, -1, 10).GetNormalizingTransform(), zero);
1167 EXPECT_EQ(IRect::MakeXYWH(10, 10, 10, -1).GetNormalizingTransform(), zero);
1168 EXPECT_EQ(IRect::MakeXYWH(10, 10, -1, -1).GetNormalizingTransform(), zero);
1169 }
1170 }
1171
1172 TEST(RectTest, RectXYWHIsEmpty) {
1173 auto nan = std::numeric_limits<Scalar>::quiet_NaN();
1174
1175 // Non-empty
1176 EXPECT_FALSE(Rect::MakeXYWH(1.5, 2.3, 10.5, 7.2).IsEmpty());
1177
1178 // Empty both width and height both 0 or negative, in all combinations
1179 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, 0.0, 0.0).IsEmpty());
1180 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, -1.0, -1.0).IsEmpty());
1181 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, 0.0, -1.0).IsEmpty());
1182 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, -1.0, 0.0).IsEmpty());
1183
1184 // Empty for 0 or negative width or height (but not both at the same time)
1185 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, 10.5, 0.0).IsEmpty());
1186 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, 10.5, -1.0).IsEmpty());
1187 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, 0.0, 7.2).IsEmpty());
1188 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, -1.0, 7.2).IsEmpty());
1189
1190 // Empty for NaN in width or height or both
1191 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, 10.5, nan).IsEmpty());
1192 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, nan, 7.2).IsEmpty());
1193 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, nan, nan).IsEmpty());
1194 }
1195
1196 TEST(RectTest, IRectXYWHIsEmpty) {
1197 // Non-empty
1198 EXPECT_FALSE(IRect::MakeXYWH(1, 2, 10, 7).IsEmpty());
1199
1200 // Empty both width and height both 0 or negative, in all combinations
1201 EXPECT_TRUE(IRect::MakeXYWH(1, 2, 0, 0).IsEmpty());
1202 EXPECT_TRUE(IRect::MakeXYWH(1, 2, -1, -1).IsEmpty());
1203 EXPECT_TRUE(IRect::MakeXYWH(1, 2, -1, 0).IsEmpty());
1204 EXPECT_TRUE(IRect::MakeXYWH(1, 2, 0, -1).IsEmpty());
1205
1206 // Empty for 0 or negative width or height (but not both at the same time)
1207 EXPECT_TRUE(IRect::MakeXYWH(1, 2, 10, 0).IsEmpty());
1208 EXPECT_TRUE(IRect::MakeXYWH(1, 2, 10, -1).IsEmpty());
1209 EXPECT_TRUE(IRect::MakeXYWH(1, 2, 0, 7).IsEmpty());
1210 EXPECT_TRUE(IRect::MakeXYWH(1, 2, -1, 7).IsEmpty());
1211 }
1212
1213 TEST(RectTest, MakePointBoundsQuad) {
1214 Quad quad = {
1215 Point(10, 10),
1216 Point(20, 10),
1217 Point(10, 20),
1218 Point(20, 20),
1219 };
1220 std::optional<Rect> bounds = Rect::MakePointBounds(quad);
1221 EXPECT_TRUE(bounds.has_value());
1222 if (bounds.has_value()) {
1223 EXPECT_TRUE(RectNear(bounds.value(), Rect::MakeLTRB(10, 10, 20, 20)));
1224 }
1225 }
1226
1227 TEST(RectTest, IsSquare) {
1228 EXPECT_TRUE(Rect::MakeXYWH(10, 30, 20, 20).IsSquare());
1229 EXPECT_FALSE(Rect::MakeXYWH(10, 30, 20, 19).IsSquare());
1230 EXPECT_FALSE(Rect::MakeXYWH(10, 30, 19, 20).IsSquare());
1231 EXPECT_TRUE(Rect::MakeMaximum().IsSquare());
1232
1233 EXPECT_TRUE(IRect::MakeXYWH(10, 30, 20, 20).IsSquare());
1234 EXPECT_FALSE(IRect::MakeXYWH(10, 30, 20, 19).IsSquare());
1235 EXPECT_FALSE(IRect::MakeXYWH(10, 30, 19, 20).IsSquare());
1236 EXPECT_TRUE(IRect::MakeMaximum().IsSquare());
1237 }
1238
1239 TEST(RectTest, GetCenter) {
1240 EXPECT_EQ(Rect::MakeXYWH(10, 30, 20, 20).GetCenter(), Point(20, 40));
1241 EXPECT_EQ(Rect::MakeXYWH(10, 30, 20, 19).GetCenter(), Point(20, 39.5));
1242 EXPECT_EQ(Rect::MakeMaximum().GetCenter(), Point(0, 0));
1243
1244 // Note that we expect a Point as the answer from an IRect
1245 EXPECT_EQ(IRect::MakeXYWH(10, 30, 20, 20).GetCenter(), Point(20, 40));
1246 EXPECT_EQ(IRect::MakeXYWH(10, 30, 20, 19).GetCenter(), Point(20, 39.5));
1247 EXPECT_EQ(IRect::MakeMaximum().GetCenter(), Point(0, 0));
1248 }
1249
1250 TEST(RectTest, RectExpand) {
1251 auto rect = Rect::MakeLTRB(100, 100, 200, 200);
1252
1253 // Expand(T amount)
1254 EXPECT_EQ(rect.Expand(10), Rect::MakeLTRB(90, 90, 210, 210));
1255 EXPECT_EQ(rect.Expand(-10), Rect::MakeLTRB(110, 110, 190, 190));
1256
1257 // Expand(amount, amount)
1258 EXPECT_EQ(rect.Expand(10, 10), Rect::MakeLTRB(90, 90, 210, 210));
1259 EXPECT_EQ(rect.Expand(10, -10), Rect::MakeLTRB(90, 110, 210, 190));
1260 EXPECT_EQ(rect.Expand(-10, 10), Rect::MakeLTRB(110, 90, 190, 210));
1261 EXPECT_EQ(rect.Expand(-10, -10), Rect::MakeLTRB(110, 110, 190, 190));
1262
1263 // Expand(amount, amount, amount, amount)
1264 EXPECT_EQ(rect.Expand(10, 20, 30, 40), Rect::MakeLTRB(90, 80, 230, 240));
1265 EXPECT_EQ(rect.Expand(-10, 20, 30, 40), Rect::MakeLTRB(110, 80, 230, 240));
1266 EXPECT_EQ(rect.Expand(10, -20, 30, 40), Rect::MakeLTRB(90, 120, 230, 240));
1267 EXPECT_EQ(rect.Expand(10, 20, -30, 40), Rect::MakeLTRB(90, 80, 170, 240));
1268 EXPECT_EQ(rect.Expand(10, 20, 30, -40), Rect::MakeLTRB(90, 80, 230, 160));
1269
1270 // Expand(Point amount)
1271 EXPECT_EQ(rect.Expand(Point{10, 10}), Rect::MakeLTRB(90, 90, 210, 210));
1272 EXPECT_EQ(rect.Expand(Point{10, -10}), Rect::MakeLTRB(90, 110, 210, 190));
1273 EXPECT_EQ(rect.Expand(Point{-10, 10}), Rect::MakeLTRB(110, 90, 190, 210));
1274 EXPECT_EQ(rect.Expand(Point{-10, -10}), Rect::MakeLTRB(110, 110, 190, 190));
1275
1276 // Expand(Size amount)
1277 EXPECT_EQ(rect.Expand(Size{10, 10}), Rect::MakeLTRB(90, 90, 210, 210));
1278 EXPECT_EQ(rect.Expand(Size{10, -10}), Rect::MakeLTRB(90, 110, 210, 190));
1279 EXPECT_EQ(rect.Expand(Size{-10, 10}), Rect::MakeLTRB(110, 90, 190, 210));
1280 EXPECT_EQ(rect.Expand(Size{-10, -10}), Rect::MakeLTRB(110, 110, 190, 190));
1281 }
1282
1283 TEST(RectTest, IRectExpand) {
1284 auto rect = IRect::MakeLTRB(100, 100, 200, 200);
1285
1286 // Expand(T amount)
1287 EXPECT_EQ(rect.Expand(10), IRect::MakeLTRB(90, 90, 210, 210));
1288 EXPECT_EQ(rect.Expand(-10), IRect::MakeLTRB(110, 110, 190, 190));
1289
1290 // Expand(amount, amount)
1291 EXPECT_EQ(rect.Expand(10, 10), IRect::MakeLTRB(90, 90, 210, 210));
1292 EXPECT_EQ(rect.Expand(10, -10), IRect::MakeLTRB(90, 110, 210, 190));
1293 EXPECT_EQ(rect.Expand(-10, 10), IRect::MakeLTRB(110, 90, 190, 210));
1294 EXPECT_EQ(rect.Expand(-10, -10), IRect::MakeLTRB(110, 110, 190, 190));
1295
1296 // Expand(amount, amount, amount, amount)
1297 EXPECT_EQ(rect.Expand(10, 20, 30, 40), IRect::MakeLTRB(90, 80, 230, 240));
1298 EXPECT_EQ(rect.Expand(-10, 20, 30, 40), IRect::MakeLTRB(110, 80, 230, 240));
1299 EXPECT_EQ(rect.Expand(10, -20, 30, 40), IRect::MakeLTRB(90, 120, 230, 240));
1300 EXPECT_EQ(rect.Expand(10, 20, -30, 40), IRect::MakeLTRB(90, 80, 170, 240));
1301 EXPECT_EQ(rect.Expand(10, 20, 30, -40), IRect::MakeLTRB(90, 80, 230, 160));
1302
1303 // Expand(IPoint amount)
1304 EXPECT_EQ(rect.Expand(IPoint{10, 10}), IRect::MakeLTRB(90, 90, 210, 210));
1305 EXPECT_EQ(rect.Expand(IPoint{10, -10}), IRect::MakeLTRB(90, 110, 210, 190));
1306 EXPECT_EQ(rect.Expand(IPoint{-10, 10}), IRect::MakeLTRB(110, 90, 190, 210));
1307 EXPECT_EQ(rect.Expand(IPoint{-10, -10}), IRect::MakeLTRB(110, 110, 190, 190));
1308
1309 // Expand(ISize amount)
1310 EXPECT_EQ(rect.Expand(ISize{10, 10}), IRect::MakeLTRB(90, 90, 210, 210));
1311 EXPECT_EQ(rect.Expand(ISize{10, -10}), IRect::MakeLTRB(90, 110, 210, 190));
1312 EXPECT_EQ(rect.Expand(ISize{-10, 10}), IRect::MakeLTRB(110, 90, 190, 210));
1313 EXPECT_EQ(rect.Expand(ISize{-10, -10}), IRect::MakeLTRB(110, 110, 190, 190));
1314 }
1315
1316 TEST(RectTest, ContainsFloatingPoint) {
1317 auto rect1 =
1318 Rect::MakeXYWH(472.599945f, 440.999969f, 1102.80005f, 654.000061f);
1319 auto rect2 = Rect::MakeXYWH(724.f, 618.f, 600.f, 300.f);
1320 EXPECT_TRUE(rect1.Contains(rect2));
1321 }
1322
1323 template <typename R>
1324 static constexpr inline R flip_lr(R rect) {
1325 return R::MakeLTRB(rect.GetRight(), rect.GetTop(), //
1326 rect.GetLeft(), rect.GetBottom());
1327 }
1328
1329 template <typename R>
1330 static constexpr inline R flip_tb(R rect) {
1331 return R::MakeLTRB(rect.GetLeft(), rect.GetBottom(), //
1332 rect.GetRight(), rect.GetTop());
1333 }
1334
1335 template <typename R>
1336 static constexpr inline R flip_lrtb(R rect) {
1337 return flip_lr(flip_tb(rect));
1338 }
1339
1340 static constexpr inline Rect swap_nan(const Rect& rect, int index) {
1341 Scalar nan = std::numeric_limits<Scalar>::quiet_NaN();
1342 FML_DCHECK(index >= 0 && index <= 15);
1343 Scalar l = ((index & (1 << 0)) != 0) ? nan : rect.GetLeft();
1344 Scalar t = ((index & (1 << 1)) != 0) ? nan : rect.GetTop();
1345 Scalar r = ((index & (1 << 2)) != 0) ? nan : rect.GetRight();
1346 Scalar b = ((index & (1 << 3)) != 0) ? nan : rect.GetBottom();
1347 return Rect::MakeLTRB(l, t, r, b);
1348 }
1349
1350 static constexpr inline Point swap_nan(const Point& point, int index) {
1351 Scalar nan = std::numeric_limits<Scalar>::quiet_NaN();
1352 FML_DCHECK(index >= 0 && index <= 3);
1353 Scalar x = ((index & (1 << 0)) != 0) ? nan : point.x;
1354 Scalar y = ((index & (1 << 1)) != 0) ? nan : point.y;
1355 return Point(x, y);
1356 }
1357
1358 TEST(RectTest, RectUnion) {
1359 auto check_nans = [](const Rect& a, const Rect& b, const std::string& label) {
1360 ASSERT_TRUE(a.IsFinite()) << label;
1361 ASSERT_TRUE(b.IsFinite()) << label;
1362 ASSERT_FALSE(a.Union(b).IsEmpty());
1363
1364 for (int i = 1; i < 16; i++) {
1365 // NaN in a produces b
1366 EXPECT_EQ(swap_nan(a, i).Union(b), b) << label << ", index = " << i;
1367 // NaN in b produces a
1368 EXPECT_EQ(a.Union(swap_nan(b, i)), a) << label << ", index = " << i;
1369 // NaN in both is empty
1370 for (int j = 1; j < 16; j++) {
1371 EXPECT_TRUE(swap_nan(a, i).Union(swap_nan(b, j)).IsEmpty())
1372 << label << ", indices = " << i << ", " << j;
1373 }
1374 }
1375 };
1376
1377 auto check_empty_flips = [](const Rect& a, const Rect& b,
1378 const std::string& label) {
1379 ASSERT_FALSE(a.IsEmpty());
1380 // b is allowed to be empty
1381
1382 // unflipped a vs flipped (empty) b yields a
1383 EXPECT_EQ(a.Union(flip_lr(b)), a) << label;
1384 EXPECT_EQ(a.Union(flip_tb(b)), a) << label;
1385 EXPECT_EQ(a.Union(flip_lrtb(b)), a) << label;
1386
1387 // flipped (empty) a vs unflipped b yields b
1388 EXPECT_EQ(flip_lr(a).Union(b), b) << label;
1389 EXPECT_EQ(flip_tb(a).Union(b), b) << label;
1390 EXPECT_EQ(flip_lrtb(a).Union(b), b) << label;
1391
1392 // flipped (empty) a vs flipped (empty) b yields empty
1393 EXPECT_TRUE(flip_lr(a).Union(flip_lr(b)).IsEmpty()) << label;
1394 EXPECT_TRUE(flip_tb(a).Union(flip_tb(b)).IsEmpty()) << label;
1395 EXPECT_TRUE(flip_lrtb(a).Union(flip_lrtb(b)).IsEmpty()) << label;
1396 };
1397
1398 auto test = [&check_nans, &check_empty_flips](const Rect& a, const Rect& b,
1399 const Rect& result) {
1400 ASSERT_FALSE(a.IsEmpty()) << a;
1401 // b is allowed to be empty
1402
1403 std::stringstream stream;
1404 stream << a << " union " << b;
1405 auto label = stream.str();
1406
1407 EXPECT_EQ(a.Union(b), result) << label;
1408 EXPECT_EQ(b.Union(a), result) << label;
1409 check_empty_flips(a, b, label);
1410 check_nans(a, b, label);
1411 };
1412
1413 {
1414 auto a = Rect::MakeXYWH(100, 100, 100, 100);
1415 auto b = Rect::MakeXYWH(0, 0, 0, 0);
1416 auto expected = Rect::MakeXYWH(100, 100, 100, 100);
1417 test(a, b, expected);
1418 }
1419
1420 {
1421 auto a = Rect::MakeXYWH(100, 100, 100, 100);
1422 auto b = Rect::MakeXYWH(0, 0, 1, 1);
1423 auto expected = Rect::MakeXYWH(0, 0, 200, 200);
1424 test(a, b, expected);
1425 }
1426
1427 {
1428 auto a = Rect::MakeXYWH(100, 100, 100, 100);
1429 auto b = Rect::MakeXYWH(10, 10, 1, 1);
1430 auto expected = Rect::MakeXYWH(10, 10, 190, 190);
1431 test(a, b, expected);
1432 }
1433
1434 {
1435 auto a = Rect::MakeXYWH(0, 0, 100, 100);
1436 auto b = Rect::MakeXYWH(10, 10, 100, 100);
1437 auto expected = Rect::MakeXYWH(0, 0, 110, 110);
1438 test(a, b, expected);
1439 }
1440
1441 {
1442 auto a = Rect::MakeXYWH(0, 0, 100, 100);
1443 auto b = Rect::MakeXYWH(100, 100, 100, 100);
1444 auto expected = Rect::MakeXYWH(0, 0, 200, 200);
1445 test(a, b, expected);
1446 }
1447 }
1448
1449 TEST(RectTest, OptRectUnion) {
1450 auto a = Rect::MakeLTRB(0, 0, 100, 100);
1451 auto b = Rect::MakeLTRB(100, 100, 200, 200);
1452 auto c = Rect::MakeLTRB(100, 0, 200, 100);
1453
1454 // NullOpt, NullOpt
1455 EXPECT_FALSE(Rect::Union(std::nullopt, std::nullopt).has_value());
1456 EXPECT_EQ(Rect::Union(std::nullopt, std::nullopt), std::nullopt);
1457
1458 auto test1 = [](const Rect& r) {
1459 // Rect, NullOpt
1460 EXPECT_EQ(Rect::Union(r, std::nullopt), r);
1461
1462 // OptRect, NullOpt
1463 EXPECT_TRUE(Rect::Union(std::optional(r), std::nullopt).has_value());
1464 EXPECT_EQ(Rect::Union(std::optional(r), std::nullopt).value(), r);
1465
1466 // NullOpt, Rect
1467 EXPECT_EQ(Rect::Union(std::nullopt, r), r);
1468
1469 // NullOpt, OptRect
1470 EXPECT_TRUE(Rect::Union(std::nullopt, std::optional(r)).has_value());
1471 EXPECT_EQ(Rect::Union(std::nullopt, std::optional(r)).value(), r);
1472 };
1473
1474 test1(a);
1475 test1(b);
1476 test1(c);
1477
1478 auto test2 = [](const Rect& a, const Rect& b, const Rect& u) {
1479 ASSERT_EQ(a.Union(b), u);
1480
1481 // Rect, OptRect
1482 EXPECT_EQ(Rect::Union(a, std::optional(b)), u);
1483
1484 // OptRect, Rect
1485 EXPECT_EQ(Rect::Union(std::optional(a), b), u);
1486
1487 // OptRect, OptRect
1488 EXPECT_TRUE(Rect::Union(std::optional(a), std::optional(b)).has_value());
1489 EXPECT_EQ(Rect::Union(std::optional(a), std::optional(b)).value(), u);
1490 };
1491
1492 test2(a, b, Rect::MakeLTRB(0, 0, 200, 200));
1493 test2(a, c, Rect::MakeLTRB(0, 0, 200, 100));
1494 test2(b, c, Rect::MakeLTRB(100, 0, 200, 200));
1495 }
1496
1497 TEST(RectTest, IRectUnion) {
1498 auto check_empty_flips = [](const IRect& a, const IRect& b,
1499 const std::string& label) {
1500 ASSERT_FALSE(a.IsEmpty());
1501 // b is allowed to be empty
1502
1503 // unflipped a vs flipped (empty) b yields a
1504 EXPECT_EQ(a.Union(flip_lr(b)), a) << label;
1505 EXPECT_EQ(a.Union(flip_tb(b)), a) << label;
1506 EXPECT_EQ(a.Union(flip_lrtb(b)), a) << label;
1507
1508 // flipped (empty) a vs unflipped b yields b
1509 EXPECT_EQ(flip_lr(a).Union(b), b) << label;
1510 EXPECT_EQ(flip_tb(a).Union(b), b) << label;
1511 EXPECT_EQ(flip_lrtb(a).Union(b), b) << label;
1512
1513 // flipped (empty) a vs flipped (empty) b yields empty
1514 EXPECT_TRUE(flip_lr(a).Union(flip_lr(b)).IsEmpty()) << label;
1515 EXPECT_TRUE(flip_tb(a).Union(flip_tb(b)).IsEmpty()) << label;
1516 EXPECT_TRUE(flip_lrtb(a).Union(flip_lrtb(b)).IsEmpty()) << label;
1517 };
1518
1519 auto test = [&check_empty_flips](const IRect& a, const IRect& b,
1520 const IRect& result) {
1521 ASSERT_FALSE(a.IsEmpty()) << a;
1522 // b is allowed to be empty
1523
1524 std::stringstream stream;
1525 stream << a << " union " << b;
1526 auto label = stream.str();
1527
1528 EXPECT_EQ(a.Union(b), result) << label;
1529 EXPECT_EQ(b.Union(a), result) << label;
1530 check_empty_flips(a, b, label);
1531 };
1532
1533 {
1534 auto a = IRect::MakeXYWH(100, 100, 100, 100);
1535 auto b = IRect::MakeXYWH(0, 0, 0, 0);
1536 auto expected = IRect::MakeXYWH(100, 100, 100, 100);
1537 test(a, b, expected);
1538 }
1539
1540 {
1541 auto a = IRect::MakeXYWH(100, 100, 100, 100);
1542 auto b = IRect::MakeXYWH(0, 0, 1, 1);
1543 auto expected = IRect::MakeXYWH(0, 0, 200, 200);
1544 test(a, b, expected);
1545 }
1546
1547 {
1548 auto a = IRect::MakeXYWH(100, 100, 100, 100);
1549 auto b = IRect::MakeXYWH(10, 10, 1, 1);
1550 auto expected = IRect::MakeXYWH(10, 10, 190, 190);
1551 test(a, b, expected);
1552 }
1553
1554 {
1555 auto a = IRect::MakeXYWH(0, 0, 100, 100);
1556 auto b = IRect::MakeXYWH(10, 10, 100, 100);
1557 auto expected = IRect::MakeXYWH(0, 0, 110, 110);
1558 test(a, b, expected);
1559 }
1560
1561 {
1562 auto a = IRect::MakeXYWH(0, 0, 100, 100);
1563 auto b = IRect::MakeXYWH(100, 100, 100, 100);
1564 auto expected = IRect::MakeXYWH(0, 0, 200, 200);
1565 test(a, b, expected);
1566 }
1567 }
1568
1569 TEST(RectTest, OptIRectUnion) {
1570 auto a = IRect::MakeLTRB(0, 0, 100, 100);
1571 auto b = IRect::MakeLTRB(100, 100, 200, 200);
1572 auto c = IRect::MakeLTRB(100, 0, 200, 100);
1573
1574 // NullOpt, NullOpt
1575 EXPECT_FALSE(IRect::Union(std::nullopt, std::nullopt).has_value());
1576 EXPECT_EQ(IRect::Union(std::nullopt, std::nullopt), std::nullopt);
1577
1578 auto test1 = [](const IRect& r) {
1579 // Rect, NullOpt
1580 EXPECT_EQ(IRect::Union(r, std::nullopt), r);
1581
1582 // OptRect, NullOpt
1583 EXPECT_TRUE(IRect::Union(std::optional(r), std::nullopt).has_value());
1584 EXPECT_EQ(IRect::Union(std::optional(r), std::nullopt).value(), r);
1585
1586 // NullOpt, Rect
1587 EXPECT_EQ(IRect::Union(std::nullopt, r), r);
1588
1589 // NullOpt, OptRect
1590 EXPECT_TRUE(IRect::Union(std::nullopt, std::optional(r)).has_value());
1591 EXPECT_EQ(IRect::Union(std::nullopt, std::optional(r)).value(), r);
1592 };
1593
1594 test1(a);
1595 test1(b);
1596 test1(c);
1597
1598 auto test2 = [](const IRect& a, const IRect& b, const IRect& u) {
1599 ASSERT_EQ(a.Union(b), u);
1600
1601 // Rect, OptRect
1602 EXPECT_EQ(IRect::Union(a, std::optional(b)), u);
1603
1604 // OptRect, Rect
1605 EXPECT_EQ(IRect::Union(std::optional(a), b), u);
1606
1607 // OptRect, OptRect
1608 EXPECT_TRUE(IRect::Union(std::optional(a), std::optional(b)).has_value());
1609 EXPECT_EQ(IRect::Union(std::optional(a), std::optional(b)).value(), u);
1610 };
1611
1612 test2(a, b, IRect::MakeLTRB(0, 0, 200, 200));
1613 test2(a, c, IRect::MakeLTRB(0, 0, 200, 100));
1614 test2(b, c, IRect::MakeLTRB(100, 0, 200, 200));
1615 }
1616
1617 TEST(RectTest, RectIntersection) {
1618 auto check_nans = [](const Rect& a, const Rect& b, const std::string& label) {
1619 ASSERT_TRUE(a.IsFinite()) << label;
1620 ASSERT_TRUE(b.IsFinite()) << label;
1621
1622 for (int i = 1; i < 16; i++) {
1623 // NaN in a produces empty
1624 EXPECT_FALSE(swap_nan(a, i).Intersection(b).has_value())
1625 << label << ", index = " << i;
1626 // NaN in b produces empty
1627 EXPECT_FALSE(a.Intersection(swap_nan(b, i)).has_value())
1628 << label << ", index = " << i;
1629 // NaN in both is empty
1630 for (int j = 1; j < 16; j++) {
1631 EXPECT_FALSE(swap_nan(a, i).Intersection(swap_nan(b, j)).has_value())
1632 << label << ", indices = " << i << ", " << j;
1633 }
1634 }
1635 };
1636
1637 auto check_empty_flips = [](const Rect& a, const Rect& b,
1638 const std::string& label) {
1639 ASSERT_FALSE(a.IsEmpty());
1640 // b is allowed to be empty
1641
1642 // unflipped a vs flipped (empty) b yields a
1643 EXPECT_FALSE(a.Intersection(flip_lr(b)).has_value()) << label;
1644 EXPECT_TRUE(a.IntersectionOrEmpty(flip_lr(b)).IsEmpty()) << label;
1645 EXPECT_FALSE(a.Intersection(flip_tb(b)).has_value()) << label;
1646 EXPECT_TRUE(a.IntersectionOrEmpty(flip_tb(b)).IsEmpty()) << label;
1647 EXPECT_FALSE(a.Intersection(flip_lrtb(b)).has_value()) << label;
1648 EXPECT_TRUE(a.IntersectionOrEmpty(flip_lrtb(b)).IsEmpty()) << label;
1649
1650 // flipped (empty) a vs unflipped b yields b
1651 EXPECT_FALSE(flip_lr(a).Intersection(b).has_value()) << label;
1652 EXPECT_TRUE(flip_lr(a).IntersectionOrEmpty(b).IsEmpty()) << label;
1653 EXPECT_FALSE(flip_tb(a).Intersection(b).has_value()) << label;
1654 EXPECT_TRUE(flip_tb(a).IntersectionOrEmpty(b).IsEmpty()) << label;
1655 EXPECT_FALSE(flip_lrtb(a).Intersection(b).has_value()) << label;
1656 EXPECT_TRUE(flip_lrtb(a).IntersectionOrEmpty(b).IsEmpty()) << label;
1657
1658 // flipped (empty) a vs flipped (empty) b yields empty
1659 EXPECT_FALSE(flip_lr(a).Intersection(flip_lr(b)).has_value()) << label;
1660 EXPECT_TRUE(flip_lr(a).IntersectionOrEmpty(flip_lr(b)).IsEmpty()) << label;
1661 EXPECT_FALSE(flip_tb(a).Intersection(flip_tb(b)).has_value()) << label;
1662 EXPECT_TRUE(flip_tb(a).IntersectionOrEmpty(flip_tb(b)).IsEmpty()) << label;
1663 EXPECT_FALSE(flip_lrtb(a).Intersection(flip_lrtb(b)).has_value()) << label;
1664 EXPECT_TRUE(flip_lrtb(a).IntersectionOrEmpty(flip_lrtb(b)).IsEmpty())
1665 << label;
1666 };
1667
1668 auto test_non_empty = [&check_nans, &check_empty_flips](
1669 const Rect& a, const Rect& b, const Rect& result) {
1670 ASSERT_FALSE(a.IsEmpty()) << a;
1671 // b is allowed to be empty
1672
1673 std::stringstream stream;
1674 stream << a << " union " << b;
1675 auto label = stream.str();
1676
1677 EXPECT_TRUE(a.Intersection(b).has_value()) << label;
1678 EXPECT_TRUE(b.Intersection(a).has_value()) << label;
1679 EXPECT_EQ(a.Intersection(b), result) << label;
1680 EXPECT_EQ(b.Intersection(a), result) << label;
1681 check_empty_flips(a, b, label);
1682 check_nans(a, b, label);
1683 };
1684
1685 auto test_empty = [&check_nans, &check_empty_flips](const Rect& a,
1686 const Rect& b) {
1687 ASSERT_FALSE(a.IsEmpty()) << a;
1688 // b is allowed to be empty
1689
1690 std::stringstream stream;
1691 stream << a << " union " << b;
1692 auto label = stream.str();
1693
1694 EXPECT_FALSE(a.Intersection(b).has_value()) << label;
1695 EXPECT_TRUE(a.IntersectionOrEmpty(b).IsEmpty()) << label;
1696 EXPECT_FALSE(b.Intersection(a).has_value()) << label;
1697 EXPECT_TRUE(b.IntersectionOrEmpty(a).IsEmpty()) << label;
1698 check_empty_flips(a, b, label);
1699 check_nans(a, b, label);
1700 };
1701
1702 {
1703 auto a = Rect::MakeXYWH(100, 100, 100, 100);
1704 auto b = Rect::MakeXYWH(0, 0, 0, 0);
1705
1706 test_empty(a, b);
1707 }
1708
1709 {
1710 auto a = Rect::MakeXYWH(100, 100, 100, 100);
1711 auto b = Rect::MakeXYWH(10, 10, 0, 0);
1712
1713 test_empty(a, b);
1714 }
1715
1716 {
1717 auto a = Rect::MakeXYWH(0, 0, 100, 100);
1718 auto b = Rect::MakeXYWH(10, 10, 100, 100);
1719 auto expected = Rect::MakeXYWH(10, 10, 90, 90);
1720
1721 test_non_empty(a, b, expected);
1722 }
1723
1724 {
1725 auto a = Rect::MakeXYWH(0, 0, 100, 100);
1726 auto b = Rect::MakeXYWH(100, 100, 100, 100);
1727
1728 test_empty(a, b);
1729 }
1730
1731 {
1732 auto a = Rect::MakeMaximum();
1733 auto b = Rect::MakeXYWH(10, 10, 300, 300);
1734
1735 test_non_empty(a, b, b);
1736 }
1737
1738 {
1739 auto a = Rect::MakeMaximum();
1740 auto b = Rect::MakeMaximum();
1741
1742 test_non_empty(a, b, Rect::MakeMaximum());
1743 }
1744 }
1745
1746 TEST(RectTest, OptRectIntersection) {
1747 auto a = Rect::MakeLTRB(0, 0, 110, 110);
1748 auto b = Rect::MakeLTRB(100, 100, 200, 200);
1749 auto c = Rect::MakeLTRB(100, 0, 200, 110);
1750
1751 // NullOpt, NullOpt
1752 EXPECT_FALSE(Rect::Intersection(std::nullopt, std::nullopt).has_value());
1753 EXPECT_EQ(Rect::Intersection(std::nullopt, std::nullopt), std::nullopt);
1754
1755 auto test1 = [](const Rect& r) {
1756 // Rect, NullOpt
1757 EXPECT_TRUE(Rect::Intersection(r, std::nullopt).has_value());
1758 EXPECT_EQ(Rect::Intersection(r, std::nullopt).value(), r);
1759
1760 // OptRect, NullOpt
1761 EXPECT_TRUE(Rect::Intersection(std::optional(r), std::nullopt).has_value());
1762 EXPECT_EQ(Rect::Intersection(std::optional(r), std::nullopt).value(), r);
1763
1764 // NullOpt, Rect
1765 EXPECT_TRUE(Rect::Intersection(std::nullopt, r).has_value());
1766 EXPECT_EQ(Rect::Intersection(std::nullopt, r).value(), r);
1767
1768 // NullOpt, OptRect
1769 EXPECT_TRUE(Rect::Intersection(std::nullopt, std::optional(r)).has_value());
1770 EXPECT_EQ(Rect::Intersection(std::nullopt, std::optional(r)).value(), r);
1771 };
1772
1773 test1(a);
1774 test1(b);
1775 test1(c);
1776
1777 auto test2 = [](const Rect& a, const Rect& b, const Rect& i) {
1778 ASSERT_EQ(a.Intersection(b), i);
1779
1780 // Rect, OptRect
1781 EXPECT_TRUE(Rect::Intersection(a, std::optional(b)).has_value());
1782 EXPECT_EQ(Rect::Intersection(a, std::optional(b)).value(), i);
1783
1784 // OptRect, Rect
1785 EXPECT_TRUE(Rect::Intersection(std::optional(a), b).has_value());
1786 EXPECT_EQ(Rect::Intersection(std::optional(a), b).value(), i);
1787
1788 // OptRect, OptRect
1789 EXPECT_TRUE(
1790 Rect::Intersection(std::optional(a), std::optional(b)).has_value());
1791 EXPECT_EQ(Rect::Intersection(std::optional(a), std::optional(b)).value(),
1792 i);
1793 };
1794
1795 test2(a, b, Rect::MakeLTRB(100, 100, 110, 110));
1796 test2(a, c, Rect::MakeLTRB(100, 0, 110, 110));
1797 test2(b, c, Rect::MakeLTRB(100, 100, 200, 110));
1798 }
1799
1800 TEST(RectTest, IRectIntersection) {
1801 auto check_empty_flips = [](const IRect& a, const IRect& b,
1802 const std::string& label) {
1803 ASSERT_FALSE(a.IsEmpty());
1804 // b is allowed to be empty
1805
1806 // unflipped a vs flipped (empty) b yields a
1807 EXPECT_FALSE(a.Intersection(flip_lr(b)).has_value()) << label;
1808 EXPECT_FALSE(a.Intersection(flip_tb(b)).has_value()) << label;
1809 EXPECT_FALSE(a.Intersection(flip_lrtb(b)).has_value()) << label;
1810
1811 // flipped (empty) a vs unflipped b yields b
1812 EXPECT_FALSE(flip_lr(a).Intersection(b).has_value()) << label;
1813 EXPECT_FALSE(flip_tb(a).Intersection(b).has_value()) << label;
1814 EXPECT_FALSE(flip_lrtb(a).Intersection(b).has_value()) << label;
1815
1816 // flipped (empty) a vs flipped (empty) b yields empty
1817 EXPECT_FALSE(flip_lr(a).Intersection(flip_lr(b)).has_value()) << label;
1818 EXPECT_FALSE(flip_tb(a).Intersection(flip_tb(b)).has_value()) << label;
1819 EXPECT_FALSE(flip_lrtb(a).Intersection(flip_lrtb(b)).has_value()) << label;
1820 };
1821
1822 auto test_non_empty = [&check_empty_flips](const IRect& a, const IRect& b,
1823 const IRect& result) {
1824 ASSERT_FALSE(a.IsEmpty()) << a;
1825 // b is allowed to be empty
1826
1827 std::stringstream stream;
1828 stream << a << " union " << b;
1829 auto label = stream.str();
1830
1831 EXPECT_TRUE(a.Intersection(b).has_value()) << label;
1832 EXPECT_TRUE(b.Intersection(a).has_value()) << label;
1833 EXPECT_EQ(a.Intersection(b), result) << label;
1834 EXPECT_EQ(b.Intersection(a), result) << label;
1835 check_empty_flips(a, b, label);
1836 };
1837
1838 auto test_empty = [&check_empty_flips](const IRect& a, const IRect& b) {
1839 ASSERT_FALSE(a.IsEmpty()) << a;
1840 // b is allowed to be empty
1841
1842 std::stringstream stream;
1843 stream << a << " union " << b;
1844 auto label = stream.str();
1845
1846 EXPECT_FALSE(a.Intersection(b).has_value()) << label;
1847 EXPECT_FALSE(b.Intersection(a).has_value()) << label;
1848 check_empty_flips(a, b, label);
1849 };
1850
1851 {
1852 auto a = IRect::MakeXYWH(100, 100, 100, 100);
1853 auto b = IRect::MakeXYWH(0, 0, 0, 0);
1854
1855 test_empty(a, b);
1856 }
1857
1858 {
1859 auto a = IRect::MakeXYWH(100, 100, 100, 100);
1860 auto b = IRect::MakeXYWH(10, 10, 0, 0);
1861
1862 test_empty(a, b);
1863 }
1864
1865 {
1866 auto a = IRect::MakeXYWH(0, 0, 100, 100);
1867 auto b = IRect::MakeXYWH(10, 10, 100, 100);
1868 auto expected = IRect::MakeXYWH(10, 10, 90, 90);
1869
1870 test_non_empty(a, b, expected);
1871 }
1872
1873 {
1874 auto a = IRect::MakeXYWH(0, 0, 100, 100);
1875 auto b = IRect::MakeXYWH(100, 100, 100, 100);
1876
1877 test_empty(a, b);
1878 }
1879
1880 {
1881 auto a = IRect::MakeMaximum();
1882 auto b = IRect::MakeXYWH(10, 10, 300, 300);
1883
1884 test_non_empty(a, b, b);
1885 }
1886
1887 {
1888 auto a = IRect::MakeMaximum();
1889 auto b = IRect::MakeMaximum();
1890
1891 test_non_empty(a, b, IRect::MakeMaximum());
1892 }
1893 }
1894
1895 TEST(RectTest, OptIRectIntersection) {
1896 auto a = IRect::MakeLTRB(0, 0, 110, 110);
1897 auto b = IRect::MakeLTRB(100, 100, 200, 200);
1898 auto c = IRect::MakeLTRB(100, 0, 200, 110);
1899
1900 // NullOpt, NullOpt
1901 EXPECT_FALSE(IRect::Intersection(std::nullopt, std::nullopt).has_value());
1902 EXPECT_EQ(IRect::Intersection(std::nullopt, std::nullopt), std::nullopt);
1903
1904 auto test1 = [](const IRect& r) {
1905 // Rect, NullOpt
1906 EXPECT_TRUE(IRect::Intersection(r, std::nullopt).has_value());
1907 EXPECT_EQ(IRect::Intersection(r, std::nullopt).value(), r);
1908
1909 // OptRect, NullOpt
1910 EXPECT_TRUE(
1911 IRect::Intersection(std::optional(r), std::nullopt).has_value());
1912 EXPECT_EQ(IRect::Intersection(std::optional(r), std::nullopt).value(), r);
1913
1914 // NullOpt, Rect
1915 EXPECT_TRUE(IRect::Intersection(std::nullopt, r).has_value());
1916 EXPECT_EQ(IRect::Intersection(std::nullopt, r).value(), r);
1917
1918 // NullOpt, OptRect
1919 EXPECT_TRUE(
1920 IRect::Intersection(std::nullopt, std::optional(r)).has_value());
1921 EXPECT_EQ(IRect::Intersection(std::nullopt, std::optional(r)).value(), r);
1922 };
1923
1924 test1(a);
1925 test1(b);
1926 test1(c);
1927
1928 auto test2 = [](const IRect& a, const IRect& b, const IRect& i) {
1929 ASSERT_EQ(a.Intersection(b), i);
1930
1931 // Rect, OptRect
1932 EXPECT_TRUE(IRect::Intersection(a, std::optional(b)).has_value());
1933 EXPECT_EQ(IRect::Intersection(a, std::optional(b)).value(), i);
1934
1935 // OptRect, Rect
1936 EXPECT_TRUE(IRect::Intersection(std::optional(a), b).has_value());
1937 EXPECT_EQ(IRect::Intersection(std::optional(a), b).value(), i);
1938
1939 // OptRect, OptRect
1940 EXPECT_TRUE(
1941 IRect::Intersection(std::optional(a), std::optional(b)).has_value());
1942 EXPECT_EQ(IRect::Intersection(std::optional(a), std::optional(b)).value(),
1943 i);
1944 };
1945
1946 test2(a, b, IRect::MakeLTRB(100, 100, 110, 110));
1947 test2(a, c, IRect::MakeLTRB(100, 0, 110, 110));
1948 test2(b, c, IRect::MakeLTRB(100, 100, 200, 110));
1949 }
1950
1951 TEST(RectTest, RectIntersectsWithRect) {
1952 auto check_nans = [](const Rect& a, const Rect& b, const std::string& label) {
1953 ASSERT_TRUE(a.IsFinite()) << label;
1954 ASSERT_TRUE(b.IsFinite()) << label;
1955
1956 for (int i = 1; i < 16; i++) {
1957 // NaN in a produces b
1958 EXPECT_FALSE(swap_nan(a, i).IntersectsWithRect(b))
1959 << label << ", index = " << i;
1960 // NaN in b produces a
1961 EXPECT_FALSE(a.IntersectsWithRect(swap_nan(b, i)))
1962 << label << ", index = " << i;
1963 // NaN in both is empty
1964 for (int j = 1; j < 16; j++) {
1965 EXPECT_FALSE(swap_nan(a, i).IntersectsWithRect(swap_nan(b, j)))
1966 << label << ", indices = " << i << ", " << j;
1967 }
1968 }
1969 };
1970
1971 auto check_empty_flips = [](const Rect& a, const Rect& b,
1972 const std::string& label) {
1973 ASSERT_FALSE(a.IsEmpty());
1974 // b is allowed to be empty
1975
1976 // unflipped a vs flipped (empty) b yields a
1977 EXPECT_FALSE(a.IntersectsWithRect(flip_lr(b))) << label;
1978 EXPECT_FALSE(a.IntersectsWithRect(flip_tb(b))) << label;
1979 EXPECT_FALSE(a.IntersectsWithRect(flip_lrtb(b))) << label;
1980
1981 // flipped (empty) a vs unflipped b yields b
1982 EXPECT_FALSE(flip_lr(a).IntersectsWithRect(b)) << label;
1983 EXPECT_FALSE(flip_tb(a).IntersectsWithRect(b)) << label;
1984 EXPECT_FALSE(flip_lrtb(a).IntersectsWithRect(b)) << label;
1985
1986 // flipped (empty) a vs flipped (empty) b yields empty
1987 EXPECT_FALSE(flip_lr(a).IntersectsWithRect(flip_lr(b))) << label;
1988 EXPECT_FALSE(flip_tb(a).IntersectsWithRect(flip_tb(b))) << label;
1989 EXPECT_FALSE(flip_lrtb(a).IntersectsWithRect(flip_lrtb(b))) << label;
1990 };
1991
1992 auto test_non_empty = [&check_nans, &check_empty_flips](const Rect& a,
1993 const Rect& b) {
1994 ASSERT_FALSE(a.IsEmpty()) << a;
1995 // b is allowed to be empty
1996
1997 std::stringstream stream;
1998 stream << a << " union " << b;
1999 auto label = stream.str();
2000
2001 EXPECT_TRUE(a.IntersectsWithRect(b)) << label;
2002 EXPECT_TRUE(b.IntersectsWithRect(a)) << label;
2003 check_empty_flips(a, b, label);
2004 check_nans(a, b, label);
2005 };
2006
2007 auto test_empty = [&check_nans, &check_empty_flips](const Rect& a,
2008 const Rect& b) {
2009 ASSERT_FALSE(a.IsEmpty()) << a;
2010 // b is allowed to be empty
2011
2012 std::stringstream stream;
2013 stream << a << " union " << b;
2014 auto label = stream.str();
2015
2016 EXPECT_FALSE(a.IntersectsWithRect(b)) << label;
2017 EXPECT_FALSE(b.IntersectsWithRect(a)) << label;
2018 check_empty_flips(a, b, label);
2019 check_nans(a, b, label);
2020 };
2021
2022 {
2023 auto a = Rect::MakeXYWH(100, 100, 100, 100);
2024 auto b = Rect::MakeXYWH(0, 0, 0, 0);
2025
2026 test_empty(a, b);
2027 }
2028
2029 {
2030 auto a = Rect::MakeXYWH(100, 100, 100, 100);
2031 auto b = Rect::MakeXYWH(10, 10, 0, 0);
2032
2033 test_empty(a, b);
2034 }
2035
2036 {
2037 auto a = Rect::MakeXYWH(0, 0, 100, 100);
2038 auto b = Rect::MakeXYWH(10, 10, 100, 100);
2039
2040 test_non_empty(a, b);
2041 }
2042
2043 {
2044 auto a = Rect::MakeXYWH(0, 0, 100, 100);
2045 auto b = Rect::MakeXYWH(100, 100, 100, 100);
2046
2047 test_empty(a, b);
2048 }
2049
2050 {
2051 auto a = Rect::MakeMaximum();
2052 auto b = Rect::MakeXYWH(10, 10, 100, 100);
2053
2054 test_non_empty(a, b);
2055 }
2056
2057 {
2058 auto a = Rect::MakeMaximum();
2059 auto b = Rect::MakeMaximum();
2060
2061 test_non_empty(a, b);
2062 }
2063 }
2064
2065 TEST(RectTest, IRectIntersectsWithRect) {
2066 auto check_empty_flips = [](const IRect& a, const IRect& b,
2067 const std::string& label) {
2068 ASSERT_FALSE(a.IsEmpty());
2069 // b is allowed to be empty
2070
2071 // unflipped a vs flipped (empty) b yields a
2072 EXPECT_FALSE(a.IntersectsWithRect(flip_lr(b))) << label;
2073 EXPECT_FALSE(a.IntersectsWithRect(flip_tb(b))) << label;
2074 EXPECT_FALSE(a.IntersectsWithRect(flip_lrtb(b))) << label;
2075
2076 // flipped (empty) a vs unflipped b yields b
2077 EXPECT_FALSE(flip_lr(a).IntersectsWithRect(b)) << label;
2078 EXPECT_FALSE(flip_tb(a).IntersectsWithRect(b)) << label;
2079 EXPECT_FALSE(flip_lrtb(a).IntersectsWithRect(b)) << label;
2080
2081 // flipped (empty) a vs flipped (empty) b yields empty
2082 EXPECT_FALSE(flip_lr(a).IntersectsWithRect(flip_lr(b))) << label;
2083 EXPECT_FALSE(flip_tb(a).IntersectsWithRect(flip_tb(b))) << label;
2084 EXPECT_FALSE(flip_lrtb(a).IntersectsWithRect(flip_lrtb(b))) << label;
2085 };
2086
2087 auto test_non_empty = [&check_empty_flips](const IRect& a, const IRect& b) {
2088 ASSERT_FALSE(a.IsEmpty()) << a;
2089 // b is allowed to be empty
2090
2091 std::stringstream stream;
2092 stream << a << " union " << b;
2093 auto label = stream.str();
2094
2095 EXPECT_TRUE(a.IntersectsWithRect(b)) << label;
2096 EXPECT_TRUE(b.IntersectsWithRect(a)) << label;
2097 check_empty_flips(a, b, label);
2098 };
2099
2100 auto test_empty = [&check_empty_flips](const IRect& a, const IRect& b) {
2101 ASSERT_FALSE(a.IsEmpty()) << a;
2102 // b is allowed to be empty
2103
2104 std::stringstream stream;
2105 stream << a << " union " << b;
2106 auto label = stream.str();
2107
2108 EXPECT_FALSE(a.IntersectsWithRect(b)) << label;
2109 EXPECT_FALSE(b.IntersectsWithRect(a)) << label;
2110 check_empty_flips(a, b, label);
2111 };
2112
2113 {
2114 auto a = IRect::MakeXYWH(100, 100, 100, 100);
2115 auto b = IRect::MakeXYWH(0, 0, 0, 0);
2116
2117 test_empty(a, b);
2118 }
2119
2120 {
2121 auto a = IRect::MakeXYWH(100, 100, 100, 100);
2122 auto b = IRect::MakeXYWH(10, 10, 0, 0);
2123
2124 test_empty(a, b);
2125 }
2126
2127 {
2128 auto a = IRect::MakeXYWH(0, 0, 100, 100);
2129 auto b = IRect::MakeXYWH(10, 10, 100, 100);
2130
2131 test_non_empty(a, b);
2132 }
2133
2134 {
2135 auto a = IRect::MakeXYWH(0, 0, 100, 100);
2136 auto b = IRect::MakeXYWH(100, 100, 100, 100);
2137
2138 test_empty(a, b);
2139 }
2140
2141 {
2142 auto a = IRect::MakeMaximum();
2143 auto b = IRect::MakeXYWH(10, 10, 100, 100);
2144
2145 test_non_empty(a, b);
2146 }
2147
2148 {
2149 auto a = IRect::MakeMaximum();
2150 auto b = IRect::MakeMaximum();
2151
2152 test_non_empty(a, b);
2153 }
2154 }
2155
2156 TEST(RectTest, RectContainsPoint) {
2157 auto check_nans = [](const Rect& rect, const Point& point,
2158 const std::string& label) {
2159 ASSERT_TRUE(rect.IsFinite()) << label;
2160 ASSERT_TRUE(point.IsFinite()) << label;
2161
2162 for (int i = 1; i < 16; i++) {
2163 EXPECT_FALSE(swap_nan(rect, i).Contains(point))
2164 << label << ", index = " << i;
2165 for (int j = 1; j < 4; j++) {
2166 EXPECT_FALSE(swap_nan(rect, i).Contains(swap_nan(point, j)))
2167 << label << ", indices = " << i << ", " << j;
2168 }
2169 }
2170 };
2171
2172 auto check_empty_flips = [](const Rect& rect, const Point& point,
2173 const std::string& label) {
2174 ASSERT_FALSE(rect.IsEmpty());
2175
2176 EXPECT_FALSE(flip_lr(rect).Contains(point)) << label;
2177 EXPECT_FALSE(flip_tb(rect).Contains(point)) << label;
2178 EXPECT_FALSE(flip_lrtb(rect).Contains(point)) << label;
2179 };
2180
2181 auto test_inside = [&check_nans, &check_empty_flips](const Rect& rect,
2182 const Point& point) {
2183 ASSERT_FALSE(rect.IsEmpty()) << rect;
2184
2185 std::stringstream stream;
2186 stream << rect << " contains " << point;
2187 auto label = stream.str();
2188
2189 EXPECT_TRUE(rect.Contains(point)) << label;
2190 check_empty_flips(rect, point, label);
2191 check_nans(rect, point, label);
2192 };
2193
2194 auto test_outside = [&check_nans, &check_empty_flips](const Rect& rect,
2195 const Point& point) {
2196 ASSERT_FALSE(rect.IsEmpty()) << rect;
2197
2198 std::stringstream stream;
2199 stream << rect << " contains " << point;
2200 auto label = stream.str();
2201
2202 EXPECT_FALSE(rect.Contains(point)) << label;
2203 check_empty_flips(rect, point, label);
2204 check_nans(rect, point, label);
2205 };
2206
2207 {
2208 // Origin is inclusive
2209 auto r = Rect::MakeXYWH(100, 100, 100, 100);
2210 auto p = Point(100, 100);
2211
2212 test_inside(r, p);
2213 }
2214 {
2215 // Size is exclusive
2216 auto r = Rect::MakeXYWH(100, 100, 100, 100);
2217 auto p = Point(200, 200);
2218
2219 test_outside(r, p);
2220 }
2221 {
2222 auto r = Rect::MakeXYWH(100, 100, 100, 100);
2223 auto p = Point(99, 99);
2224
2225 test_outside(r, p);
2226 }
2227 {
2228 auto r = Rect::MakeXYWH(100, 100, 100, 100);
2229 auto p = Point(199, 199);
2230
2231 test_inside(r, p);
2232 }
2233
2234 {
2235 auto r = Rect::MakeMaximum();
2236 auto p = Point(199, 199);
2237
2238 test_inside(r, p);
2239 }
2240 }
2241
2242 TEST(RectTest, IRectContainsIPoint) {
2243 auto check_empty_flips = [](const IRect& rect, const IPoint& point,
2244 const std::string& label) {
2245 ASSERT_FALSE(rect.IsEmpty());
2246
2247 EXPECT_FALSE(flip_lr(rect).Contains(point)) << label;
2248 EXPECT_FALSE(flip_tb(rect).Contains(point)) << label;
2249 EXPECT_FALSE(flip_lrtb(rect).Contains(point)) << label;
2250 };
2251
2252 auto test_inside = [&check_empty_flips](const IRect& rect,
2253 const IPoint& point) {
2254 ASSERT_FALSE(rect.IsEmpty()) << rect;
2255
2256 std::stringstream stream;
2257 stream << rect << " contains " << point;
2258 auto label = stream.str();
2259
2260 EXPECT_TRUE(rect.Contains(point)) << label;
2261 check_empty_flips(rect, point, label);
2262 };
2263
2264 auto test_outside = [&check_empty_flips](const IRect& rect,
2265 const IPoint& point) {
2266 ASSERT_FALSE(rect.IsEmpty()) << rect;
2267
2268 std::stringstream stream;
2269 stream << rect << " contains " << point;
2270 auto label = stream.str();
2271
2272 EXPECT_FALSE(rect.Contains(point)) << label;
2273 check_empty_flips(rect, point, label);
2274 };
2275
2276 {
2277 // Origin is inclusive
2278 auto r = IRect::MakeXYWH(100, 100, 100, 100);
2279 auto p = IPoint(100, 100);
2280
2281 test_inside(r, p);
2282 }
2283 {
2284 // Size is exclusive
2285 auto r = IRect::MakeXYWH(100, 100, 100, 100);
2286 auto p = IPoint(200, 200);
2287
2288 test_outside(r, p);
2289 }
2290 {
2291 auto r = IRect::MakeXYWH(100, 100, 100, 100);
2292 auto p = IPoint(99, 99);
2293
2294 test_outside(r, p);
2295 }
2296 {
2297 auto r = IRect::MakeXYWH(100, 100, 100, 100);
2298 auto p = IPoint(199, 199);
2299
2300 test_inside(r, p);
2301 }
2302
2303 {
2304 auto r = IRect::MakeMaximum();
2305 auto p = IPoint(199, 199);
2306
2307 test_inside(r, p);
2308 }
2309 }
2310
2311 TEST(RectTest, RectContainsInclusivePoint) {
2312 auto check_nans = [](const Rect& rect, const Point& point,
2313 const std::string& label) {
2314 ASSERT_TRUE(rect.IsFinite()) << label;
2315 ASSERT_TRUE(point.IsFinite()) << label;
2316
2317 for (int i = 1; i < 16; i++) {
2318 EXPECT_FALSE(swap_nan(rect, i).ContainsInclusive(point))
2319 << label << ", index = " << i;
2320 for (int j = 1; j < 4; j++) {
2321 EXPECT_FALSE(swap_nan(rect, i).ContainsInclusive(swap_nan(point, j)))
2322 << label << ", indices = " << i << ", " << j;
2323 }
2324 }
2325 };
2326
2327 auto check_empty_flips = [](const Rect& rect, const Point& point,
2328 const std::string& label) {
2329 ASSERT_FALSE(rect.IsEmpty());
2330
2331 EXPECT_FALSE(flip_lr(rect).ContainsInclusive(point)) << label;
2332 EXPECT_FALSE(flip_tb(rect).ContainsInclusive(point)) << label;
2333 EXPECT_FALSE(flip_lrtb(rect).ContainsInclusive(point)) << label;
2334 };
2335
2336 auto test_inside = [&check_nans, &check_empty_flips](const Rect& rect,
2337 const Point& point) {
2338 ASSERT_FALSE(rect.IsEmpty()) << rect;
2339
2340 std::stringstream stream;
2341 stream << rect << " contains " << point;
2342 auto label = stream.str();
2343
2344 EXPECT_TRUE(rect.ContainsInclusive(point)) << label;
2345 check_empty_flips(rect, point, label);
2346 check_nans(rect, point, label);
2347 };
2348
2349 auto test_outside = [&check_nans, &check_empty_flips](const Rect& rect,
2350 const Point& point) {
2351 ASSERT_FALSE(rect.IsEmpty()) << rect;
2352
2353 std::stringstream stream;
2354 stream << rect << " contains " << point;
2355 auto label = stream.str();
2356
2357 EXPECT_FALSE(rect.ContainsInclusive(point)) << label;
2358 check_empty_flips(rect, point, label);
2359 check_nans(rect, point, label);
2360 };
2361
2362 {
2363 // Origin is inclusive
2364 auto r = Rect::MakeXYWH(100, 100, 100, 100);
2365 auto p = Point(100, 100);
2366
2367 test_inside(r, p);
2368 }
2369 {
2370 // Size is inclusive
2371 auto r = Rect::MakeXYWH(100, 100, 100, 100);
2372 auto p = Point(200, 200);
2373
2374 test_inside(r, p);
2375 }
2376 {
2377 // Size + epsilon is exclusive
2378 auto r = Rect::MakeXYWH(100, 100, 100, 100);
2379 auto p = Point(200 + kEhCloseEnough, 200 + kEhCloseEnough);
2380
2381 test_outside(r, p);
2382 }
2383 {
2384 auto r = Rect::MakeXYWH(100, 100, 100, 100);
2385 auto p = Point(99, 99);
2386
2387 test_outside(r, p);
2388 }
2389 {
2390 auto r = Rect::MakeXYWH(100, 100, 100, 100);
2391 auto p = Point(199, 199);
2392
2393 test_inside(r, p);
2394 }
2395
2396 {
2397 auto r = Rect::MakeMaximum();
2398 auto p = Point(199, 199);
2399
2400 test_inside(r, p);
2401 }
2402 }
2403
2404 TEST(RectTest, IRectContainsInclusiveIPoint) {
2405 auto check_empty_flips = [](const IRect& rect, const IPoint& point,
2406 const std::string& label) {
2407 ASSERT_FALSE(rect.IsEmpty());
2408
2409 EXPECT_FALSE(flip_lr(rect).ContainsInclusive(point)) << label;
2410 EXPECT_FALSE(flip_tb(rect).ContainsInclusive(point)) << label;
2411 EXPECT_FALSE(flip_lrtb(rect).ContainsInclusive(point)) << label;
2412 };
2413
2414 auto test_inside = [&check_empty_flips](const IRect& rect,
2415 const IPoint& point) {
2416 ASSERT_FALSE(rect.IsEmpty()) << rect;
2417
2418 std::stringstream stream;
2419 stream << rect << " contains " << point;
2420 auto label = stream.str();
2421
2422 EXPECT_TRUE(rect.ContainsInclusive(point)) << label;
2423 check_empty_flips(rect, point, label);
2424 };
2425
2426 auto test_outside = [&check_empty_flips](const IRect& rect,
2427 const IPoint& point) {
2428 ASSERT_FALSE(rect.IsEmpty()) << rect;
2429
2430 std::stringstream stream;
2431 stream << rect << " contains " << point;
2432 auto label = stream.str();
2433
2434 EXPECT_FALSE(rect.ContainsInclusive(point)) << label;
2435 check_empty_flips(rect, point, label);
2436 };
2437
2438 {
2439 // Origin is inclusive
2440 auto r = IRect::MakeXYWH(100, 100, 100, 100);
2441 auto p = IPoint(100, 100);
2442
2443 test_inside(r, p);
2444 }
2445 {
2446 // Size is inclusive
2447 auto r = IRect::MakeXYWH(100, 100, 100, 100);
2448 auto p = IPoint(200, 200);
2449
2450 test_inside(r, p);
2451 }
2452 {
2453 // Size + "epsilon" is exclusive
2454 auto r = IRect::MakeXYWH(100, 100, 100, 100);
2455 auto p = IPoint(201, 201);
2456
2457 test_outside(r, p);
2458 }
2459 {
2460 auto r = IRect::MakeXYWH(100, 100, 100, 100);
2461 auto p = IPoint(99, 99);
2462
2463 test_outside(r, p);
2464 }
2465 {
2466 auto r = IRect::MakeXYWH(100, 100, 100, 100);
2467 auto p = IPoint(199, 199);
2468
2469 test_inside(r, p);
2470 }
2471
2472 {
2473 auto r = IRect::MakeMaximum();
2474 auto p = IPoint(199, 199);
2475
2476 test_inside(r, p);
2477 }
2478 }
2479
2480 TEST(RectTest, RectContainsRect) {
2481 auto check_nans = [](const Rect& a, const Rect& b, const std::string& label) {
2482 ASSERT_TRUE(a.IsFinite()) << label;
2483 ASSERT_TRUE(b.IsFinite()) << label;
2484 ASSERT_FALSE(a.IsEmpty());
2485
2486 for (int i = 1; i < 16; i++) {
2487 // NaN in a produces false
2488 EXPECT_FALSE(swap_nan(a, i).Contains(b)) << label << ", index = " << i;
2489 // NaN in b produces false
2490 EXPECT_TRUE(a.Contains(swap_nan(b, i))) << label << ", index = " << i;
2491 // NaN in both is false
2492 for (int j = 1; j < 16; j++) {
2493 EXPECT_FALSE(swap_nan(a, i).Contains(swap_nan(b, j)))
2494 << label << ", indices = " << i << ", " << j;
2495 }
2496 }
2497 };
2498
2499 auto check_empty_flips = [](const Rect& a, const Rect& b,
2500 const std::string& label) {
2501 ASSERT_FALSE(a.IsEmpty());
2502 // test b rects are allowed to have 0 w/h, but not be backwards
2503 ASSERT_FALSE(b.GetLeft() > b.GetRight() || b.GetTop() > b.GetBottom());
2504
2505 // unflipped a vs flipped (empty) b yields false
2506 EXPECT_TRUE(a.Contains(flip_lr(b))) << label;
2507 EXPECT_TRUE(a.Contains(flip_tb(b))) << label;
2508 EXPECT_TRUE(a.Contains(flip_lrtb(b))) << label;
2509
2510 // flipped (empty) a vs unflipped b yields false
2511 EXPECT_FALSE(flip_lr(a).Contains(b)) << label;
2512 EXPECT_FALSE(flip_tb(a).Contains(b)) << label;
2513 EXPECT_FALSE(flip_lrtb(a).Contains(b)) << label;
2514
2515 // flipped (empty) a vs flipped (empty) b yields empty
2516 EXPECT_FALSE(flip_lr(a).Contains(flip_lr(b))) << label;
2517 EXPECT_FALSE(flip_tb(a).Contains(flip_tb(b))) << label;
2518 EXPECT_FALSE(flip_lrtb(a).Contains(flip_lrtb(b))) << label;
2519 };
2520
2521 auto test_inside = [&check_nans, &check_empty_flips](const Rect& a,
2522 const Rect& b) {
2523 ASSERT_FALSE(a.IsEmpty()) << a;
2524 // test b rects are allowed to have 0 w/h, but not be backwards
2525 ASSERT_FALSE(b.GetLeft() > b.GetRight() || b.GetTop() > b.GetBottom());
2526
2527 std::stringstream stream;
2528 stream << a << " contains " << b;
2529 auto label = stream.str();
2530
2531 EXPECT_TRUE(a.Contains(b)) << label;
2532 check_empty_flips(a, b, label);
2533 check_nans(a, b, label);
2534 };
2535
2536 auto test_not_inside = [&check_nans, &check_empty_flips](const Rect& a,
2537 const Rect& b) {
2538 ASSERT_FALSE(a.IsEmpty()) << a;
2539 // If b was empty, it would be contained and should not be tested with
2540 // this function - use |test_inside| instead.
2541 ASSERT_FALSE(b.IsEmpty()) << b;
2542
2543 std::stringstream stream;
2544 stream << a << " contains " << b;
2545 auto label = stream.str();
2546
2547 EXPECT_FALSE(a.Contains(b)) << label;
2548 check_empty_flips(a, b, label);
2549 check_nans(a, b, label);
2550 };
2551
2552 {
2553 auto a = Rect::MakeXYWH(100, 100, 100, 100);
2554
2555 test_inside(a, a);
2556 }
2557 {
2558 auto a = Rect::MakeXYWH(100, 100, 100, 100);
2559 auto b = Rect::MakeXYWH(0, 0, 0, 0);
2560
2561 test_inside(a, b);
2562 }
2563 {
2564 auto a = Rect::MakeXYWH(100, 100, 100, 100);
2565 auto b = Rect::MakeXYWH(150, 150, 20, 20);
2566
2567 test_inside(a, b);
2568 }
2569 {
2570 auto a = Rect::MakeXYWH(100, 100, 100, 100);
2571 auto b = Rect::MakeXYWH(150, 150, 100, 100);
2572
2573 test_not_inside(a, b);
2574 }
2575 {
2576 auto a = Rect::MakeXYWH(100, 100, 100, 100);
2577 auto b = Rect::MakeXYWH(50, 50, 100, 100);
2578
2579 test_not_inside(a, b);
2580 }
2581 {
2582 auto a = Rect::MakeXYWH(100, 100, 100, 100);
2583 auto b = Rect::MakeXYWH(0, 0, 300, 300);
2584
2585 test_not_inside(a, b);
2586 }
2587 {
2588 auto a = Rect::MakeMaximum();
2589 auto b = Rect::MakeXYWH(0, 0, 300, 300);
2590
2591 test_inside(a, b);
2592 }
2593 }
2594
2595 TEST(RectTest, IRectContainsIRect) {
2596 auto check_empty_flips = [](const IRect& a, const IRect& b,
2597 const std::string& label) {
2598 ASSERT_FALSE(a.IsEmpty());
2599 // test b rects are allowed to have 0 w/h, but not be backwards
2600 ASSERT_FALSE(b.GetLeft() > b.GetRight() || b.GetTop() > b.GetBottom());
2601
2602 // unflipped a vs flipped (empty) b yields true
2603 EXPECT_TRUE(a.Contains(flip_lr(b))) << label;
2604 EXPECT_TRUE(a.Contains(flip_tb(b))) << label;
2605 EXPECT_TRUE(a.Contains(flip_lrtb(b))) << label;
2606
2607 // flipped (empty) a vs unflipped b yields false
2608 EXPECT_FALSE(flip_lr(a).Contains(b)) << label;
2609 EXPECT_FALSE(flip_tb(a).Contains(b)) << label;
2610 EXPECT_FALSE(flip_lrtb(a).Contains(b)) << label;
2611
2612 // flipped (empty) a vs flipped (empty) b yields empty
2613 EXPECT_FALSE(flip_lr(a).Contains(flip_lr(b))) << label;
2614 EXPECT_FALSE(flip_tb(a).Contains(flip_tb(b))) << label;
2615 EXPECT_FALSE(flip_lrtb(a).Contains(flip_lrtb(b))) << label;
2616 };
2617
2618 auto test_inside = [&check_empty_flips](const IRect& a, const IRect& b) {
2619 ASSERT_FALSE(a.IsEmpty()) << a;
2620 // test b rects are allowed to have 0 w/h, but not be backwards
2621 ASSERT_FALSE(b.GetLeft() > b.GetRight() || b.GetTop() > b.GetBottom());
2622
2623 std::stringstream stream;
2624 stream << a << " contains " << b;
2625 auto label = stream.str();
2626
2627 EXPECT_TRUE(a.Contains(b)) << label;
2628 check_empty_flips(a, b, label);
2629 };
2630
2631 auto test_not_inside = [&check_empty_flips](const IRect& a, const IRect& b) {
2632 ASSERT_FALSE(a.IsEmpty()) << a;
2633 // If b was empty, it would be contained and should not be tested with
2634 // this function - use |test_inside| instead.
2635 ASSERT_FALSE(b.IsEmpty()) << b;
2636
2637 std::stringstream stream;
2638 stream << a << " contains " << b;
2639 auto label = stream.str();
2640
2641 EXPECT_FALSE(a.Contains(b)) << label;
2642 check_empty_flips(a, b, label);
2643 };
2644
2645 {
2646 auto a = IRect::MakeXYWH(100, 100, 100, 100);
2647
2648 test_inside(a, a);
2649 }
2650 {
2651 auto a = IRect::MakeXYWH(100, 100, 100, 100);
2652 auto b = IRect::MakeXYWH(0, 0, 0, 0);
2653
2654 test_inside(a, b);
2655 }
2656 {
2657 auto a = IRect::MakeXYWH(100, 100, 100, 100);
2658 auto b = IRect::MakeXYWH(150, 150, 20, 20);
2659
2660 test_inside(a, b);
2661 }
2662 {
2663 auto a = IRect::MakeXYWH(100, 100, 100, 100);
2664 auto b = IRect::MakeXYWH(150, 150, 100, 100);
2665
2666 test_not_inside(a, b);
2667 }
2668 {
2669 auto a = IRect::MakeXYWH(100, 100, 100, 100);
2670 auto b = IRect::MakeXYWH(50, 50, 100, 100);
2671
2672 test_not_inside(a, b);
2673 }
2674 {
2675 auto a = IRect::MakeXYWH(100, 100, 100, 100);
2676 auto b = IRect::MakeXYWH(0, 0, 300, 300);
2677
2678 test_not_inside(a, b);
2679 }
2680 {
2681 auto a = IRect::MakeMaximum();
2682 auto b = IRect::MakeXYWH(0, 0, 300, 300);
2683
2684 test_inside(a, b);
2685 }
2686 }
2687
2688 TEST(RectTest, RectCutOut) {
2689 Rect cull_rect = Rect::MakeLTRB(20, 20, 40, 40);
2690
2691 auto check_nans = [&cull_rect](const Rect& diff_rect,
2692 const std::string& label) {
2693 EXPECT_TRUE(cull_rect.IsFinite()) << label;
2694 EXPECT_TRUE(diff_rect.IsFinite()) << label;
2695
2696 for (int i = 1; i < 16; i++) {
2697 // NaN in cull_rect produces empty
2698 EXPECT_FALSE(swap_nan(cull_rect, i).Cutout(diff_rect).has_value())
2699 << label << ", index " << i;
2700 EXPECT_EQ(swap_nan(cull_rect, i).CutoutOrEmpty(diff_rect), Rect())
2701 << label << ", index " << i;
2702
2703 // NaN in diff_rect is nop
2704 EXPECT_TRUE(cull_rect.Cutout(swap_nan(diff_rect, i)).has_value())
2705 << label << ", index " << i;
2706 EXPECT_EQ(cull_rect.CutoutOrEmpty(swap_nan(diff_rect, i)), cull_rect)
2707 << label << ", index " << i;
2708
2709 for (int j = 1; j < 16; j++) {
2710 // NaN in both is also empty
2711 EXPECT_FALSE(
2712 swap_nan(cull_rect, i).Cutout(swap_nan(diff_rect, j)).has_value())
2713 << label << ", indices " << i << ", " << j;
2714 EXPECT_EQ(swap_nan(cull_rect, i).CutoutOrEmpty(swap_nan(diff_rect, j)),
2715 Rect())
2716 << label << ", indices " << i << ", " << j;
2717 }
2718 }
2719 };
2720
2721 auto check_empty_flips = [&cull_rect](const Rect& diff_rect,
2722 const std::string& label) {
2723 EXPECT_FALSE(cull_rect.IsEmpty()) << label;
2724 EXPECT_FALSE(diff_rect.IsEmpty()) << label;
2725
2726 // unflipped cull_rect vs flipped(empty) diff_rect
2727 // == cull_rect
2728 EXPECT_TRUE(cull_rect.Cutout(flip_lr(diff_rect)).has_value()) << label;
2729 EXPECT_EQ(cull_rect.Cutout(flip_lr(diff_rect)), cull_rect) << label;
2730 EXPECT_TRUE(cull_rect.Cutout(flip_tb(diff_rect)).has_value()) << label;
2731 EXPECT_EQ(cull_rect.Cutout(flip_tb(diff_rect)), cull_rect) << label;
2732 EXPECT_TRUE(cull_rect.Cutout(flip_lrtb(diff_rect)).has_value()) << label;
2733 EXPECT_EQ(cull_rect.Cutout(flip_lrtb(diff_rect)), cull_rect) << label;
2734
2735 // flipped(empty) cull_rect vs unflipped diff_rect
2736 // == empty
2737 EXPECT_FALSE(flip_lr(cull_rect).Cutout(diff_rect).has_value()) << label;
2738 EXPECT_EQ(flip_lr(cull_rect).CutoutOrEmpty(diff_rect), Rect()) << label;
2739 EXPECT_FALSE(flip_tb(cull_rect).Cutout(diff_rect).has_value()) << label;
2740 EXPECT_EQ(flip_tb(cull_rect).CutoutOrEmpty(diff_rect), Rect()) << label;
2741 EXPECT_FALSE(flip_lrtb(cull_rect).Cutout(diff_rect).has_value()) << label;
2742 EXPECT_EQ(flip_lrtb(cull_rect).CutoutOrEmpty(diff_rect), Rect()) << label;
2743
2744 // flipped(empty) cull_rect vs flipped(empty) diff_rect
2745 // == empty
2746 EXPECT_FALSE(flip_lr(cull_rect).Cutout(flip_lr(diff_rect)).has_value())
2747 << label;
2748 EXPECT_EQ(flip_lr(cull_rect).CutoutOrEmpty(flip_lr(diff_rect)), Rect())
2749 << label;
2750 EXPECT_FALSE(flip_tb(cull_rect).Cutout(flip_tb(diff_rect)).has_value())
2751 << label;
2752 EXPECT_EQ(flip_tb(cull_rect).CutoutOrEmpty(flip_tb(diff_rect)), Rect())
2753 << label;
2754 EXPECT_FALSE(flip_lrtb(cull_rect).Cutout(flip_lrtb(diff_rect)).has_value())
2755 << label;
2756 EXPECT_EQ(flip_lrtb(cull_rect).CutoutOrEmpty(flip_lrtb(diff_rect)), Rect())
2757 << label;
2758 };
2759
2760 auto non_reducing = [&cull_rect, &check_empty_flips, &check_nans](
2761 const Rect& diff_rect, const std::string& label) {
2762 EXPECT_EQ(cull_rect.Cutout(diff_rect), cull_rect) << label;
2763 EXPECT_EQ(cull_rect.CutoutOrEmpty(diff_rect), cull_rect) << label;
2764 check_empty_flips(diff_rect, label);
2765 check_nans(diff_rect, label);
2766 };
2767
2768 auto reducing = [&cull_rect, &check_empty_flips, &check_nans](
2769 const Rect& diff_rect, const Rect& result_rect,
2770 const std::string& label) {
2771 EXPECT_TRUE(!result_rect.IsEmpty());
2772 EXPECT_EQ(cull_rect.Cutout(diff_rect), result_rect) << label;
2773 EXPECT_EQ(cull_rect.CutoutOrEmpty(diff_rect), result_rect) << label;
2774 check_empty_flips(diff_rect, label);
2775 check_nans(diff_rect, label);
2776 };
2777
2778 auto emptying = [&cull_rect, &check_empty_flips, &check_nans](
2779 const Rect& diff_rect, const std::string& label) {
2780 EXPECT_FALSE(cull_rect.Cutout(diff_rect).has_value()) << label;
2781 EXPECT_EQ(cull_rect.CutoutOrEmpty(diff_rect), Rect()) << label;
2782 check_empty_flips(diff_rect, label);
2783 check_nans(diff_rect, label);
2784 };
2785
2786 // Skim the corners and edge
2787 non_reducing(Rect::MakeLTRB(10, 10, 20, 20), "outside UL corner");
2788 non_reducing(Rect::MakeLTRB(20, 10, 40, 20), "Above");
2789 non_reducing(Rect::MakeLTRB(40, 10, 50, 20), "outside UR corner");
2790 non_reducing(Rect::MakeLTRB(40, 20, 50, 40), "Right");
2791 non_reducing(Rect::MakeLTRB(40, 40, 50, 50), "outside LR corner");
2792 non_reducing(Rect::MakeLTRB(20, 40, 40, 50), "Below");
2793 non_reducing(Rect::MakeLTRB(10, 40, 20, 50), "outside LR corner");
2794 non_reducing(Rect::MakeLTRB(10, 20, 20, 40), "Left");
2795
2796 // Overlap corners
2797 non_reducing(Rect::MakeLTRB(15, 15, 25, 25), "covering UL corner");
2798 non_reducing(Rect::MakeLTRB(35, 15, 45, 25), "covering UR corner");
2799 non_reducing(Rect::MakeLTRB(35, 35, 45, 45), "covering LR corner");
2800 non_reducing(Rect::MakeLTRB(15, 35, 25, 45), "covering LL corner");
2801
2802 // Overlap edges, but not across an entire side
2803 non_reducing(Rect::MakeLTRB(20, 15, 39, 25), "Top edge left-biased");
2804 non_reducing(Rect::MakeLTRB(21, 15, 40, 25), "Top edge, right biased");
2805 non_reducing(Rect::MakeLTRB(35, 20, 45, 39), "Right edge, top-biased");
2806 non_reducing(Rect::MakeLTRB(35, 21, 45, 40), "Right edge, bottom-biased");
2807 non_reducing(Rect::MakeLTRB(20, 35, 39, 45), "Bottom edge, left-biased");
2808 non_reducing(Rect::MakeLTRB(21, 35, 40, 45), "Bottom edge, right-biased");
2809 non_reducing(Rect::MakeLTRB(15, 20, 25, 39), "Left edge, top-biased");
2810 non_reducing(Rect::MakeLTRB(15, 21, 25, 40), "Left edge, bottom-biased");
2811
2812 // Slice all the way through the middle
2813 non_reducing(Rect::MakeLTRB(25, 15, 35, 45), "Vertical interior slice");
2814 non_reducing(Rect::MakeLTRB(15, 25, 45, 35), "Horizontal interior slice");
2815
2816 // Slice off each edge
2817 reducing(Rect::MakeLTRB(20, 15, 40, 25), //
2818 Rect::MakeLTRB(20, 25, 40, 40), //
2819 "Slice off top");
2820 reducing(Rect::MakeLTRB(35, 20, 45, 40), //
2821 Rect::MakeLTRB(20, 20, 35, 40), //
2822 "Slice off right");
2823 reducing(Rect::MakeLTRB(20, 35, 40, 45), //
2824 Rect::MakeLTRB(20, 20, 40, 35), //
2825 "Slice off bottom");
2826 reducing(Rect::MakeLTRB(15, 20, 25, 40), //
2827 Rect::MakeLTRB(25, 20, 40, 40), //
2828 "Slice off left");
2829
2830 // cull rect contains diff rect
2831 non_reducing(Rect::MakeLTRB(21, 21, 39, 39), "Contained, non-covering");
2832
2833 // cull rect equals diff rect
2834 emptying(cull_rect, "Perfectly covering");
2835
2836 // diff rect contains cull rect
2837 emptying(Rect::MakeLTRB(15, 15, 45, 45), "Smothering");
2838 }
2839
2840 TEST(RectTest, IRectCutOut) {
2841 IRect cull_rect = IRect::MakeLTRB(20, 20, 40, 40);
2842
2843 auto check_empty_flips = [&cull_rect](const IRect& diff_rect,
2844 const std::string& label) {
2845 EXPECT_FALSE(diff_rect.IsEmpty());
2846 EXPECT_FALSE(cull_rect.IsEmpty());
2847
2848 // unflipped cull_rect vs flipped(empty) diff_rect
2849 // == cull_rect
2850 EXPECT_TRUE(cull_rect.Cutout(flip_lr(diff_rect)).has_value()) << label;
2851 EXPECT_EQ(cull_rect.Cutout(flip_lr(diff_rect)), cull_rect) << label;
2852 EXPECT_TRUE(cull_rect.Cutout(flip_tb(diff_rect)).has_value()) << label;
2853 EXPECT_EQ(cull_rect.Cutout(flip_tb(diff_rect)), cull_rect) << label;
2854 EXPECT_TRUE(cull_rect.Cutout(flip_lrtb(diff_rect)).has_value()) << label;
2855 EXPECT_EQ(cull_rect.Cutout(flip_lrtb(diff_rect)), cull_rect) << label;
2856
2857 // flipped(empty) cull_rect vs flipped(empty) diff_rect
2858 // == empty
2859 EXPECT_FALSE(flip_lr(cull_rect).Cutout(diff_rect).has_value()) << label;
2860 EXPECT_EQ(flip_lr(cull_rect).CutoutOrEmpty(diff_rect), IRect()) << label;
2861 EXPECT_FALSE(flip_tb(cull_rect).Cutout(diff_rect).has_value()) << label;
2862 EXPECT_EQ(flip_tb(cull_rect).CutoutOrEmpty(diff_rect), IRect()) << label;
2863 EXPECT_FALSE(flip_lrtb(cull_rect).Cutout(diff_rect).has_value()) << label;
2864 EXPECT_EQ(flip_lrtb(cull_rect).CutoutOrEmpty(diff_rect), IRect()) << label;
2865
2866 // flipped(empty) cull_rect vs unflipped diff_rect
2867 // == empty
2868 EXPECT_FALSE(flip_lr(cull_rect).Cutout(flip_lr(diff_rect)).has_value())
2869 << label;
2870 EXPECT_EQ(flip_lr(cull_rect).CutoutOrEmpty(flip_lr(diff_rect)), IRect())
2871 << label;
2872 EXPECT_FALSE(flip_tb(cull_rect).Cutout(flip_tb(diff_rect)).has_value())
2873 << label;
2874 EXPECT_EQ(flip_tb(cull_rect).CutoutOrEmpty(flip_tb(diff_rect)), IRect())
2875 << label;
2876 EXPECT_FALSE(flip_lrtb(cull_rect).Cutout(flip_lrtb(diff_rect)).has_value())
2877 << label;
2878 EXPECT_EQ(flip_lrtb(cull_rect).CutoutOrEmpty(flip_lrtb(diff_rect)), IRect())
2879 << label;
2880 };
2881
2882 auto non_reducing = [&cull_rect, &check_empty_flips](
2883 const IRect& diff_rect, const std::string& label) {
2884 EXPECT_EQ(cull_rect.Cutout(diff_rect), cull_rect) << label;
2885 EXPECT_EQ(cull_rect.CutoutOrEmpty(diff_rect), cull_rect) << label;
2886 check_empty_flips(diff_rect, label);
2887 };
2888
2889 auto reducing = [&cull_rect, &check_empty_flips](const IRect& diff_rect,
2890 const IRect& result_rect,
2891 const std::string& label) {
2892 EXPECT_TRUE(!result_rect.IsEmpty());
2893 EXPECT_EQ(cull_rect.Cutout(diff_rect), result_rect) << label;
2894 EXPECT_EQ(cull_rect.CutoutOrEmpty(diff_rect), result_rect) << label;
2895 check_empty_flips(diff_rect, label);
2896 };
2897
2898 auto emptying = [&cull_rect, &check_empty_flips](const IRect& diff_rect,
2899 const std::string& label) {
2900 EXPECT_FALSE(cull_rect.Cutout(diff_rect).has_value()) << label;
2901 EXPECT_EQ(cull_rect.CutoutOrEmpty(diff_rect), IRect()) << label;
2902 check_empty_flips(diff_rect, label);
2903 };
2904
2905 // Skim the corners and edge
2906 non_reducing(IRect::MakeLTRB(10, 10, 20, 20), "outside UL corner");
2907 non_reducing(IRect::MakeLTRB(20, 10, 40, 20), "Above");
2908 non_reducing(IRect::MakeLTRB(40, 10, 50, 20), "outside UR corner");
2909 non_reducing(IRect::MakeLTRB(40, 20, 50, 40), "Right");
2910 non_reducing(IRect::MakeLTRB(40, 40, 50, 50), "outside LR corner");
2911 non_reducing(IRect::MakeLTRB(20, 40, 40, 50), "Below");
2912 non_reducing(IRect::MakeLTRB(10, 40, 20, 50), "outside LR corner");
2913 non_reducing(IRect::MakeLTRB(10, 20, 20, 40), "Left");
2914
2915 // Overlap corners
2916 non_reducing(IRect::MakeLTRB(15, 15, 25, 25), "covering UL corner");
2917 non_reducing(IRect::MakeLTRB(35, 15, 45, 25), "covering UR corner");
2918 non_reducing(IRect::MakeLTRB(35, 35, 45, 45), "covering LR corner");
2919 non_reducing(IRect::MakeLTRB(15, 35, 25, 45), "covering LL corner");
2920
2921 // Overlap edges, but not across an entire side
2922 non_reducing(IRect::MakeLTRB(20, 15, 39, 25), "Top edge left-biased");
2923 non_reducing(IRect::MakeLTRB(21, 15, 40, 25), "Top edge, right biased");
2924 non_reducing(IRect::MakeLTRB(35, 20, 45, 39), "Right edge, top-biased");
2925 non_reducing(IRect::MakeLTRB(35, 21, 45, 40), "Right edge, bottom-biased");
2926 non_reducing(IRect::MakeLTRB(20, 35, 39, 45), "Bottom edge, left-biased");
2927 non_reducing(IRect::MakeLTRB(21, 35, 40, 45), "Bottom edge, right-biased");
2928 non_reducing(IRect::MakeLTRB(15, 20, 25, 39), "Left edge, top-biased");
2929 non_reducing(IRect::MakeLTRB(15, 21, 25, 40), "Left edge, bottom-biased");
2930
2931 // Slice all the way through the middle
2932 non_reducing(IRect::MakeLTRB(25, 15, 35, 45), "Vertical interior slice");
2933 non_reducing(IRect::MakeLTRB(15, 25, 45, 35), "Horizontal interior slice");
2934
2935 // Slice off each edge
2936 reducing(IRect::MakeLTRB(20, 15, 40, 25), //
2937 IRect::MakeLTRB(20, 25, 40, 40), //
2938 "Slice off top");
2939 reducing(IRect::MakeLTRB(35, 20, 45, 40), //
2940 IRect::MakeLTRB(20, 20, 35, 40), //
2941 "Slice off right");
2942 reducing(IRect::MakeLTRB(20, 35, 40, 45), //
2943 IRect::MakeLTRB(20, 20, 40, 35), //
2944 "Slice off bottom");
2945 reducing(IRect::MakeLTRB(15, 20, 25, 40), //
2946 IRect::MakeLTRB(25, 20, 40, 40), //
2947 "Slice off left");
2948
2949 // cull rect contains diff rect
2950 non_reducing(IRect::MakeLTRB(21, 21, 39, 39), "Contained, non-covering");
2951
2952 // cull rect equals diff rect
2953 emptying(cull_rect, "Perfectly covering");
2954
2955 // diff rect contains cull rect
2956 emptying(IRect::MakeLTRB(15, 15, 45, 45), "Smothering");
2957 }
2958
2959 TEST(RectTest, RectGetPoints) {
2960 {
2961 Rect r = Rect::MakeXYWH(100, 200, 300, 400);
2962 auto points = r.GetPoints();
2963 EXPECT_POINT_NEAR(points[0], Point(100, 200));
2964 EXPECT_POINT_NEAR(points[1], Point(400, 200));
2965 EXPECT_POINT_NEAR(points[2], Point(100, 600));
2966 EXPECT_POINT_NEAR(points[3], Point(400, 600));
2967 }
2968
2969 {
2970 Rect r = Rect::MakeMaximum();
2971 auto points = r.GetPoints();
2972 EXPECT_EQ(points[0], Point(std::numeric_limits<float>::lowest(),
2973 std::numeric_limits<float>::lowest()));
2974 EXPECT_EQ(points[1], Point(std::numeric_limits<float>::max(),
2975 std::numeric_limits<float>::lowest()));
2976 EXPECT_EQ(points[2], Point(std::numeric_limits<float>::lowest(),
2977 std::numeric_limits<float>::max()));
2978 EXPECT_EQ(points[3], Point(std::numeric_limits<float>::max(),
2979 std::numeric_limits<float>::max()));
2980 }
2981 }
2982
2983 TEST(RectTest, RectShift) {
2984 auto r = Rect::MakeLTRB(0, 0, 100, 100);
2985
2986 EXPECT_EQ(r.Shift(Point(10, 5)), Rect::MakeLTRB(10, 5, 110, 105));
2987 EXPECT_EQ(r.Shift(Point(-10, -5)), Rect::MakeLTRB(-10, -5, 90, 95));
2988 }
2989
2990 TEST(RectTest, RectGetTransformedPoints) {
2991 Rect r = Rect::MakeXYWH(100, 200, 300, 400);
2992 auto points = r.GetTransformedPoints(Matrix::MakeTranslation({10, 20}));
2993 EXPECT_POINT_NEAR(points[0], Point(110, 220));
2994 EXPECT_POINT_NEAR(points[1], Point(410, 220));
2995 EXPECT_POINT_NEAR(points[2], Point(110, 620));
2996 EXPECT_POINT_NEAR(points[3], Point(410, 620));
2997 }
2998
2999 TEST(RectTest, RectMakePointBounds) {
3000 {
3001 std::vector<Point> points{{1, 5}, {4, -1}, {0, 6}};
3002 auto r = Rect::MakePointBounds(points.begin(), points.end());
3003 auto expected = Rect::MakeXYWH(0, -1, 4, 7);
3004 EXPECT_TRUE(r.has_value());
3005 if (r.has_value()) {
3006 EXPECT_RECT_NEAR(r.value(), expected);
3007 }
3008 }
3009 {
3010 std::vector<Point> points;
3011 std::optional<Rect> r = Rect::MakePointBounds(points.begin(), points.end());
3012 EXPECT_FALSE(r.has_value());
3013 }
3014 }
3015
3016 TEST(RectTest, RectGetPositive) {
3017 {
3018 Rect r = Rect::MakeXYWH(100, 200, 300, 400);
3019 auto actual = r.GetPositive();
3020 EXPECT_RECT_NEAR(r, actual);
3021 }
3022 {
3023 Rect r = Rect::MakeXYWH(100, 200, -100, -100);
3024 auto actual = r.GetPositive();
3025 Rect expected = Rect::MakeXYWH(0, 100, 100, 100);
3026 EXPECT_RECT_NEAR(expected, actual);
3027 }
3028 }
3029
3030 TEST(RectTest, RectDirections) {
3031 auto r = Rect::MakeLTRB(1, 2, 3, 4);
3032
3033 EXPECT_EQ(r.GetLeft(), 1);
3034 EXPECT_EQ(r.GetTop(), 2);
3035 EXPECT_EQ(r.GetRight(), 3);
3036 EXPECT_EQ(r.GetBottom(), 4);
3037
3038 EXPECT_POINT_NEAR(r.GetLeftTop(), Point(1, 2));
3039 EXPECT_POINT_NEAR(r.GetRightTop(), Point(3, 2));
3040 EXPECT_POINT_NEAR(r.GetLeftBottom(), Point(1, 4));
3041 EXPECT_POINT_NEAR(r.GetRightBottom(), Point(3, 4));
3042 }
3043
3044 TEST(RectTest, RectProject) {
3045 {
3046 auto r = Rect::MakeLTRB(-100, -100, 100, 100);
3047 auto actual = r.Project(r);
3048 auto expected = Rect::MakeLTRB(0, 0, 1, 1);
3049 EXPECT_RECT_NEAR(expected, actual);
3050 }
3051 {
3052 auto r = Rect::MakeLTRB(-100, -100, 100, 100);
3053 auto actual = r.Project(Rect::MakeLTRB(0, 0, 100, 100));
3054 auto expected = Rect::MakeLTRB(0.5, 0.5, 1, 1);
3055 EXPECT_RECT_NEAR(expected, actual);
3056 }
3057 }
3058
3059 TEST(RectTest, RectRoundOut) {
3060 {
3061 auto r = Rect::MakeLTRB(-100, -200, 300, 400);
3062 EXPECT_EQ(Rect::RoundOut(r), r);
3063 }
3064 {
3065 auto r = Rect::MakeLTRB(-100.1, -200.1, 300.1, 400.1);
3066 EXPECT_EQ(Rect::RoundOut(r), Rect::MakeLTRB(-101, -201, 301, 401));
3067 }
3068 }
3069
3070 TEST(RectTest, IRectRoundOut) {
3071 {
3072 auto r = Rect::MakeLTRB(-100, -200, 300, 400);
3073 auto ir = IRect::MakeLTRB(-100, -200, 300, 400);
3074 EXPECT_EQ(IRect::RoundOut(r), ir);
3075 }
3076 {
3077 auto r = Rect::MakeLTRB(-100.1, -200.1, 300.1, 400.1);
3078 auto ir = IRect::MakeLTRB(-101, -201, 301, 401);
3079 EXPECT_EQ(IRect::RoundOut(r), ir);
3080 }
3081 }
3082
3083 TEST(RectTest, RectRound) {
3084 {
3085 auto r = Rect::MakeLTRB(-100, -200, 300, 400);
3086 EXPECT_EQ(Rect::Round(r), r);
3087 }
3088 {
3089 auto r = Rect::MakeLTRB(-100.4, -200.4, 300.4, 400.4);
3090 EXPECT_EQ(Rect::Round(r), Rect::MakeLTRB(-100, -200, 300, 400));
3091 }
3092 {
3093 auto r = Rect::MakeLTRB(-100.5, -200.5, 300.5, 400.5);
3094 EXPECT_EQ(Rect::Round(r), Rect::MakeLTRB(-101, -201, 301, 401));
3095 }
3096 }
3097
3098 TEST(RectTest, IRectRound) {
3099 {
3100 auto r = Rect::MakeLTRB(-100, -200, 300, 400);
3101 auto ir = IRect::MakeLTRB(-100, -200, 300, 400);
3102 EXPECT_EQ(IRect::Round(r), ir);
3103 }
3104 {
3105 auto r = Rect::MakeLTRB(-100.4, -200.4, 300.4, 400.4);
3106 auto ir = IRect::MakeLTRB(-100, -200, 300, 400);
3107 EXPECT_EQ(IRect::Round(r), ir);
3108 }
3109 {
3110 auto r = Rect::MakeLTRB(-100.5, -200.5, 300.5, 400.5);
3111 auto ir = IRect::MakeLTRB(-101, -201, 301, 401);
3112 EXPECT_EQ(IRect::Round(r), ir);
3113 }
3114 }
3115
3116 TEST(RectTest, TransformAndClipBounds) {
3117 {
3118 // This matrix should clip no corners.
3119 auto matrix = impeller::Matrix::MakeColumn(
3120 // clang-format off
3121 2.0f, 0.0f, 0.0f, 0.0f,
3122 0.0f, 4.0f, 0.0f, 0.0f,
3123 0.0f, 0.0f, 1.0f, 0.0f,
3124 0.0f, 0.0f, 0.0f, 8.0f
3125 // clang-format on
3126 );
3127 Rect src = Rect::MakeLTRB(100.0f, 100.0f, 200.0f, 200.0f);
3128 // None of these should have a W<0
3129 EXPECT_EQ(matrix.TransformHomogenous(src.GetLeftTop()),
3130 Vector3(200.0f, 400.0f, 8.0f));
3131 EXPECT_EQ(matrix.TransformHomogenous(src.GetRightTop()),
3132 Vector3(400.0f, 400.0f, 8.0f));
3133 EXPECT_EQ(matrix.TransformHomogenous(src.GetLeftBottom()),
3134 Vector3(200.0f, 800.0f, 8.0f));
3135 EXPECT_EQ(matrix.TransformHomogenous(src.GetRightBottom()),
3136 Vector3(400.0f, 800.0f, 8.0f));
3137
3138 Rect expect = Rect::MakeLTRB(25.0f, 50.0f, 50.0f, 100.0f);
3139 EXPECT_FALSE(src.TransformAndClipBounds(matrix).IsEmpty());
3140 EXPECT_EQ(src.TransformAndClipBounds(matrix), expect);
3141 }
3142
3143 {
3144 // This matrix should clip one corner.
3145 auto matrix = impeller::Matrix::MakeColumn(
3146 // clang-format off
3147 2.0f, 0.0f, 0.0f, -0.01f,
3148 0.0f, 2.0f, 0.0f, -0.006f,
3149 0.0f, 0.0f, 1.0f, 0.0f,
3150 0.0f, 0.0f, 0.0f, 3.0f
3151 // clang-format on
3152 );
3153 Rect src = Rect::MakeLTRB(100.0f, 100.0f, 200.0f, 200.0f);
3154 // Exactly one of these should have a W<0
3155 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetLeftTop()),
3156 Vector3(200.0f, 200.0f, 1.4f));
3157 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetRightTop()),
3158 Vector3(400.0f, 200.0f, 0.4f));
3159 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetLeftBottom()),
3160 Vector3(200.0f, 400.0f, 0.8f));
3161 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetRightBottom()),
3162 Vector3(400.0f, 400.0f, -0.2f));
3163
3164 Rect expect = Rect::MakeLTRB(142.85715f, 142.85715f, 6553600.f, 6553600.f);
3165 EXPECT_FALSE(src.TransformAndClipBounds(matrix).IsEmpty());
3166 EXPECT_RECT_NEAR(src.TransformAndClipBounds(matrix), expect);
3167 }
3168
3169 {
3170 // This matrix should clip two corners.
3171 auto matrix = impeller::Matrix::MakeColumn(
3172 // clang-format off
3173 2.0f, 0.0f, 0.0f, -.015f,
3174 0.0f, 2.0f, 0.0f, -.006f,
3175 0.0f, 0.0f, 1.0f, 0.0f,
3176 0.0f, 0.0f, 0.0f, 3.0f
3177 // clang-format on
3178 );
3179 Rect src = Rect::MakeLTRB(100.0f, 100.0f, 200.0f, 200.0f);
3180 // Exactly two of these should have a W<0
3181 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetLeftTop()),
3182 Vector3(200.0f, 200.0f, 0.9f));
3183 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetRightTop()),
3184 Vector3(400.0f, 200.0f, -0.6f));
3185 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetLeftBottom()),
3186 Vector3(200.0f, 400.0f, 0.3f));
3187 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetRightBottom()),
3188 Vector3(400.0f, 400.0f, -1.2f));
3189
3190 Rect expect = Rect::MakeLTRB(222.2222f, 222.2222f, 5898373.f, 6553600.f);
3191 EXPECT_FALSE(src.TransformAndClipBounds(matrix).IsEmpty());
3192 EXPECT_RECT_NEAR(src.TransformAndClipBounds(matrix), expect);
3193 }
3194
3195 {
3196 // This matrix should clip three corners.
3197 auto matrix = impeller::Matrix::MakeColumn(
3198 // clang-format off
3199 2.0f, 0.0f, 0.0f, -.02f,
3200 0.0f, 2.0f, 0.0f, -.006f,
3201 0.0f, 0.0f, 1.0f, 0.0f,
3202 0.0f, 0.0f, 0.0f, 3.0f
3203 // clang-format on
3204 );
3205 Rect src = Rect::MakeLTRB(100.0f, 100.0f, 200.0f, 200.0f);
3206 // Exactly three of these should have a W<0
3207 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetLeftTop()),
3208 Vector3(200.0f, 200.0f, 0.4f));
3209 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetRightTop()),
3210 Vector3(400.0f, 200.0f, -1.6f));
3211 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetLeftBottom()),
3212 Vector3(200.0f, 400.0f, -0.2f));
3213 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetRightBottom()),
3214 Vector3(400.0f, 400.0f, -2.2f));
3215
3216 Rect expect = Rect::MakeLTRB(499.99988f, 499.99988f, 5898340.f, 4369400.f);
3217 EXPECT_FALSE(src.TransformAndClipBounds(matrix).IsEmpty());
3218 EXPECT_RECT_NEAR(src.TransformAndClipBounds(matrix), expect);
3219 }
3220
3221 {
3222 // This matrix should clip all four corners.
3223 auto matrix = impeller::Matrix::MakeColumn(
3224 // clang-format off
3225 2.0f, 0.0f, 0.0f, -.025f,
3226 0.0f, 2.0f, 0.0f, -.006f,
3227 0.0f, 0.0f, 1.0f, 0.0f,
3228 0.0f, 0.0f, 0.0f, 3.0f
3229 // clang-format on
3230 );
3231 Rect src = Rect::MakeLTRB(100.0f, 100.0f, 200.0f, 200.0f);
3232 // All of these should have a W<0
3233 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetLeftTop()),
3234 Vector3(200.0f, 200.0f, -0.1f));
3235 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetRightTop()),
3236 Vector3(400.0f, 200.0f, -2.6f));
3237 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetLeftBottom()),
3238 Vector3(200.0f, 400.0f, -0.7f));
3239 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetRightBottom()),
3240 Vector3(400.0f, 400.0f, -3.2f));
3241
3242 EXPECT_TRUE(src.TransformAndClipBounds(matrix).IsEmpty());
3243 }
3244 }
3245
3246 } // namespace testing
3247 } // namespace impeller
value
int32_t value
Definition: dl_golden_unittests.cc:459
x
int32_t x
Definition: dl_golden_unittests.cc:458
geometry_asserts.h
RectNear
inline ::testing::AssertionResult RectNear(impeller::Rect a, impeller::Rect b)
Definition: geometry_asserts.h:89
EXPECT_VECTOR3_NEAR
#define EXPECT_VECTOR3_NEAR(a, b)
Definition: geometry_asserts.h:206
EXPECT_RECT_NEAR
#define EXPECT_RECT_NEAR(a, b)
Definition: geometry_asserts.h:203
EXPECT_POINT_NEAR
#define EXPECT_POINT_NEAR(a, b)
Definition: geometry_asserts.h:205
impeller::saturated::b
SI b
Definition: saturated_math.h:87
impeller::testing::TEST
TEST(AllocationSizeTest, CanCreateTypedAllocations)
Definition: allocation_size_unittests.cc:10
impeller::testing::flip_tb
static constexpr R flip_tb(R rect)
Definition: rect_unittests.cc:1330
impeller::testing::swap_nan
static constexpr Rect swap_nan(const Rect &rect, int index)
Definition: rect_unittests.cc:1340
impeller::testing::flip_lrtb
static constexpr R flip_lrtb(R rect)
Definition: rect_unittests.cc:1336
impeller::testing::flip_lr
static constexpr R flip_lr(R rect)
Definition: rect_unittests.cc:1324
impeller
Definition: allocation.cc:12
impeller::Scalar
float Scalar
Definition: scalar.h:18
impeller::kEhCloseEnough
constexpr float kEhCloseEnough
Definition: constants.h:57
impeller::Rect
TRect< Scalar > Rect
Definition: rect.h:792
impeller::Point
TPoint< Scalar > Point
Definition: point.h:327
impeller::IRect
IRect64 IRect
Definition: rect.h:795
impeller::IPoint
TPoint< int64_t > IPoint
Definition: point.h:328
impeller::Quad
std::array< Point, 4 > Quad
Definition: point.h:332
rect.h
scale
const Scalar scale
Definition: stroke_path_geometry.cc:319
impeller::Matrix::MakeTranslation
static constexpr Matrix MakeTranslation(const Vector3 &t)
Definition: matrix.h:95
impeller::Matrix::MakeColumn
static constexpr Matrix MakeColumn(Scalar m0, Scalar m1, Scalar m2, Scalar m3, Scalar m4, Scalar m5, Scalar m6, Scalar m7, Scalar m8, Scalar m9, Scalar m10, Scalar m11, Scalar m12, Scalar m13, Scalar m14, Scalar m15)
Definition: matrix.h:69
impeller::Matrix::MakeScale
static constexpr Matrix MakeScale(const Vector3 &s)
Definition: matrix.h:104
impeller::TPoint< Scalar >
impeller::TPoint::y
Type y
Definition: point.h:31
impeller::TPoint::x
Type x
Definition: point.h:30
impeller::TRect< Scalar >
impeller::TRect::GetBottom
constexpr auto GetBottom() const
Definition: rect.h:361
impeller::TRect::GetY
constexpr Type GetY() const
Returns the Y coordinate of the upper left corner, equivalent to |GetOrigin().y|.
Definition: rect.h:341
impeller::TRect::ContainsInclusive
constexpr bool ContainsInclusive(const TPoint< Type > &p) const
Returns true iff the provided point |p| is inside the closed-range interior of this rectangle.
Definition: rect.h:254
impeller::TRect::GetTop
constexpr auto GetTop() const
Definition: rect.h:357
impeller::TRect::GetHeight
constexpr Type GetHeight() const
Returns the height of the rectangle, equivalent to |GetSize().height|.
Definition: rect.h:351
impeller::TRect::GetOrigin
constexpr TPoint< Type > GetOrigin() const
Returns the upper left corner of the rectangle as specified by the left/top or x/y values when it was...
Definition: rect.h:324
impeller::TRect::Intersection
constexpr std::optional< TRect > Intersection(const TRect &o) const
Definition: rect.h:532
impeller::TRect::IsEmpty
constexpr bool IsEmpty() const
Returns true if either of the width or height are 0, negative, or NaN.
Definition: rect.h:301
impeller::TRect< Scalar >::MakeOriginSize
constexpr static TRect MakeOriginSize(const TPoint< Type > &origin, const TSize< Type > &size)
Definition: rect.h:144
impeller::TRect::Contains
constexpr bool Contains(const TPoint< Type > &p) const
Returns true iff the provided point |p| is inside the half-open interior of this rectangle.
Definition: rect.h:235
impeller::TRect::Union
constexpr TRect Union(const TRect &o) const
Definition: rect.h:517
impeller::TRect::GetPoints
constexpr std::array< TPoint< T >, 4 > GetPoints() const
Get the points that represent the 4 corners of this rectangle in a Z order that is compatible with tr...
Definition: rect.h:418
impeller::TRect::IntersectsWithRect
constexpr bool IntersectsWithRect(const TRect &o) const
Definition: rect.h:550
impeller::TRect::GetLeft
constexpr auto GetLeft() const
Definition: rect.h:355
impeller::TRect::CutoutOrEmpty
constexpr TRect CutoutOrEmpty(const TRect &o) const
Definition: rect.h:601
impeller::TRect< Scalar >::MakeWH
constexpr static TRect MakeWH(Type width, Type height)
Definition: rect.h:140
impeller::TRect< Scalar >::MakePointBounds
constexpr static std::optional< TRect > MakePointBounds(const U &value)
Definition: rect.h:165
impeller::TRect::GetSize
constexpr TSize< Type > GetSize() const
Returns the size of the rectangle which may be negative in either width or height and may have been c...
Definition: rect.h:331
impeller::TRect< Scalar >::Round
Round(const TRect< U > &r)
Definition: rect.h:699
impeller::TRect< Scalar >::RoundOut
RoundOut(const TRect< U > &r)
Definition: rect.h:683
impeller::TRect::GetPositive
constexpr TRect GetPositive() const
Get a version of this rectangle that has a non-negative size.
Definition: rect.h:402
impeller::TRect::GetX
constexpr Type GetX() const
Returns the X coordinate of the upper left corner, equivalent to |GetOrigin().x|.
Definition: rect.h:337
impeller::TRect::GetRight
constexpr auto GetRight() const
Definition: rect.h:359
impeller::TRect::IsFinite
IsFinite() const
Returns true if all of the fields of this floating point rectangle are finite.
Definition: rect.h:292
impeller::TRect::Scale
constexpr TRect Scale(Type scale) const
Definition: rect.h:206
impeller::TRect< Scalar >::MakeXYWH
constexpr static TRect MakeXYWH(Type x, Type y, Type width, Type height)
Definition: rect.h:136
impeller::TRect::GetLeftBottom
constexpr TPoint< T > GetLeftBottom() const
Definition: rect.h:371
impeller::TRect::GetTransformedPoints
constexpr std::array< TPoint< T >, 4 > GetTransformedPoints(const Matrix &transform) const
Definition: rect.h:430
impeller::TRect::TransformAndClipBounds
constexpr TRect TransformAndClipBounds(const Matrix &transform) const
Creates a new bounding box that contains this transformed rectangle, clipped against the near clippin...
Definition: rect.h:442
impeller::TRect::GetRightTop
constexpr TPoint< T > GetRightTop() const
Definition: rect.h:367
impeller::TRect< Scalar >::MakeSize
constexpr static TRect MakeSize(const TSize< U > &size)
Definition: rect.h:150
impeller::TRect::GetWidth
constexpr Type GetWidth() const
Returns the width of the rectangle, equivalent to |GetSize().width|.
Definition: rect.h:345
impeller::TRect::GetRightBottom
constexpr TPoint< T > GetRightBottom() const
Definition: rect.h:375
impeller::TRect< Scalar >::Make
constexpr static std::enable_if_t< std::is_floating_point_v< FT >, TRect > Make(const TRect< U > &rect)
Definition: rect.h:157
impeller::TRect::IntersectionOrEmpty
constexpr TRect IntersectionOrEmpty(const TRect &o) const
Definition: rect.h:546
impeller::TRect::Cutout
constexpr std::optional< TRect< T > > Cutout(const TRect &o) const
Returns the new boundary rectangle that would result from this rectangle being cut out by the specifi...
Definition: rect.h:561
impeller::TRect::GetLeftTop
constexpr TPoint< T > GetLeftTop() const
Definition: rect.h:363
impeller::TRect::GetXYWH
constexpr std::array< T, 4 > GetXYWH() const
Get the x, y coordinates of the origin and the width and height of the rectangle in an array.
Definition: rect.h:397
impeller::TRect< Scalar >::MakeLTRB
constexpr static TRect MakeLTRB(Type left, Type top, Type right, Type bottom)
Definition: rect.h:129
impeller::TRect< Scalar >::MakeMaximum
constexpr static TRect MakeMaximum()
Definition: rect.h:188
impeller::TSize< Scalar >
impeller::Vector3
Definition: vector.h:20