| Flutter Impeller |

Public Member Functions | Static Public Member Functions | Public Attributes | List of all members
impeller::Color Struct Reference

`#include <color.h>`

## Public Member Functions
constexpr | Color ()
| Color (const ColorHSB &hsbColor)
| Color (const Vector4 &value)
constexpr | Color (Scalar r, Scalar g, Scalar b, Scalar a)
constexpr bool | operator== (const Color &c) const
constexpr Color | operator+ (const Color &c) const
template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>
constexpr Color | operator+ (T value) const
constexpr Color | operator- (const Color &c) const
template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>
constexpr Color | operator- (T value) const
constexpr Color | operator* (const Color &c) const
template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>
constexpr Color | operator* (T value) const
constexpr Color | operator/ (const Color &c) const
template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>
constexpr Color | operator/ (T value) const
constexpr Color | Premultiply () const
constexpr Color | Unpremultiply () const
constexpr Color | Clamp01 () const
constexpr std::array< uint8_t, 4 > | ToR8G8B8A8 () const
| Convert to R8G8B8A8 representation. More...
constexpr Color | WithAlpha (Scalar new_alpha) const
Color | Blend (Color source, BlendMode blend_mode) const
| Blends an unpremultiplied destination color into a given unpremultiplied source color to form a new unpremultiplied color. More...
Color | ApplyColorMatrix (const ColorMatrix &color_matrix) const
| A color filter that transforms colors through a 4x5 color matrix. More...
Color | LinearToSRGB () const
| Convert the color from linear space to sRGB space. More...
Color | SRGBToLinear () const
| Convert the color from sRGB space to linear space. More...
constexpr bool | IsTransparent () const
constexpr bool | IsOpaque () const

## Static Public Member Functions
static constexpr Color | MakeRGBA8 (uint8_t r, uint8_t g, uint8_t b, uint8_t a)
static constexpr uint32_t | ToIColor (Color color)
| Convert this color to a 32-bit representation. More...
constexpr static Color | Lerp (Color a, Color b, Scalar t)
| Return a color that is linearly interpolated between colors a and b, according to the value of t. More...
static constexpr Color | White ()
static constexpr Color | Black ()
static constexpr Color | WhiteTransparent ()
static constexpr Color | BlackTransparent ()
static constexpr Color | Red ()
static constexpr Color | Green ()
static constexpr Color | Blue ()
static constexpr Color | AliceBlue ()
static constexpr Color | AntiqueWhite ()
static constexpr Color | Aqua ()
static constexpr Color | AquaMarine ()
static constexpr Color | Azure ()
static constexpr Color | Beige ()
static constexpr Color | Bisque ()
static constexpr Color | BlanchedAlmond ()
static constexpr Color | BlueViolet ()
static constexpr Color | Brown ()
static constexpr Color | BurlyWood ()
static constexpr Color | CadetBlue ()
static constexpr Color | Chartreuse ()
static constexpr Color | Chocolate ()
static constexpr Color | Coral ()
static constexpr Color | CornflowerBlue ()
static constexpr Color | Cornsilk ()
static constexpr Color | Crimson ()
static constexpr Color | Cyan ()
static constexpr Color | DarkBlue ()
static constexpr Color | DarkCyan ()
static constexpr Color | DarkGoldenrod ()
static constexpr Color | DarkGray ()
static constexpr Color | DarkGreen ()
static constexpr Color | DarkGrey ()
static constexpr Color | DarkKhaki ()
static constexpr Color | DarkMagenta ()
static constexpr Color | DarkOliveGreen ()
static constexpr Color | DarkOrange ()
static constexpr Color | DarkOrchid ()
static constexpr Color | DarkRed ()
static constexpr Color | DarkSalmon ()
static constexpr Color | DarkSeagreen ()
static constexpr Color | DarkSlateBlue ()
static constexpr Color | DarkSlateGray ()
static constexpr Color | DarkSlateGrey ()
static constexpr Color | DarkTurquoise ()
static constexpr Color | DarkViolet ()
static constexpr Color | DeepPink ()
static constexpr Color | DeepSkyBlue ()
static constexpr Color | DimGray ()
static constexpr Color | DimGrey ()
static constexpr Color | DodgerBlue ()
static constexpr Color | Firebrick ()
static constexpr Color | FloralWhite ()
static constexpr Color | ForestGreen ()
static constexpr Color | Fuchsia ()
static constexpr Color | Gainsboro ()
static constexpr Color | Ghostwhite ()
static constexpr Color | Gold ()
static constexpr Color | Goldenrod ()
static constexpr Color | Gray ()
static constexpr Color | GreenYellow ()
static constexpr Color | Grey ()
static constexpr Color | Honeydew ()
static constexpr Color | HotPink ()
static constexpr Color | IndianRed ()
static constexpr Color | Indigo ()
static constexpr Color | Ivory ()
static constexpr Color | Khaki ()
static constexpr Color | Lavender ()
static constexpr Color | LavenderBlush ()
static constexpr Color | LawnGreen ()
static constexpr Color | LemonChiffon ()
static constexpr Color | LightBlue ()
static constexpr Color | LightCoral ()
static constexpr Color | LightCyan ()
static constexpr Color | LightGoldenrodYellow ()
static constexpr Color | LightGray ()
static constexpr Color | LightGreen ()
static constexpr Color | LightGrey ()
static constexpr Color | LightPink ()
static constexpr Color | LightSalmon ()
static constexpr Color | LightSeaGreen ()
static constexpr Color | LightSkyBlue ()
static constexpr Color | LightSlateGray ()
static constexpr Color | LightSlateGrey ()
static constexpr Color | LightSteelBlue ()
static constexpr Color | LightYellow ()
static constexpr Color | Lime ()
static constexpr Color | LimeGreen ()
static constexpr Color | Linen ()
static constexpr Color | Magenta ()
static constexpr Color | Maroon ()
static constexpr Color | MediumAquamarine ()
static constexpr Color | MediumBlue ()
static constexpr Color | MediumOrchid ()
static constexpr Color | MediumPurple ()
static constexpr Color | MediumSeagreen ()
static constexpr Color | MediumSlateBlue ()
static constexpr Color | MediumSpringGreen ()
static constexpr Color | MediumTurquoise ()
static constexpr Color | MediumVioletRed ()
static constexpr Color | MidnightBlue ()
static constexpr Color | MintCream ()
static constexpr Color | MistyRose ()
static constexpr Color | Moccasin ()
static constexpr Color | NavajoWhite ()
static constexpr Color | Navy ()
static constexpr Color | OldLace ()
static constexpr Color | Olive ()
static constexpr Color | OliveDrab ()
static constexpr Color | Orange ()
static constexpr Color | OrangeRed ()
static constexpr Color | Orchid ()
static constexpr Color | PaleGoldenrod ()
static constexpr Color | PaleGreen ()
static constexpr Color | PaleTurquoise ()
static constexpr Color | PaleVioletRed ()
static constexpr Color | PapayaWhip ()
static constexpr Color | Peachpuff ()
static constexpr Color | Peru ()
static constexpr Color | Pink ()
static constexpr Color | Plum ()
static constexpr Color | PowderBlue ()
static constexpr Color | Purple ()
static constexpr Color | RosyBrown ()
static constexpr Color | RoyalBlue ()
static constexpr Color | SaddleBrown ()
static constexpr Color | Salmon ()
static constexpr Color | SandyBrown ()
static constexpr Color | Seagreen ()
static constexpr Color | Seashell ()
static constexpr Color | Sienna ()
static constexpr Color | Silver ()
static constexpr Color | SkyBlue ()
static constexpr Color | SlateBlue ()
static constexpr Color | SlateGray ()
static constexpr Color | SlateGrey ()
static constexpr Color | Snow ()
static constexpr Color | SpringGreen ()
static constexpr Color | SteelBlue ()
static constexpr Color | Tan ()
static constexpr Color | Teal ()
static constexpr Color | Thistle ()
static constexpr Color | Tomato ()
static constexpr Color | Turquoise ()
static constexpr Color | Violet ()
static constexpr Color | Wheat ()
static constexpr Color | Whitesmoke ()
static constexpr Color | Yellow ()
static constexpr Color | YellowGreen ()
static Color | Random ()

## Public Attributes
Scalar | red = 0.0
Scalar | green = 0.0
Scalar | blue = 0.0
Scalar | alpha = 0.0

## Detailed Description

Represents a RGBA color

Definition at line 124 of file color.h.

## Constructor & Destructor Documentation

## ◆ Color() [1/4]

constexpr impeller::Color::Color | ( |  | ) |
| inline constexpr

Definition at line 145 of file color.h.

145 {}

Referenced by ApplyColorMatrix(), Clamp01(), LinearToSRGB(), MakeRGBA8(), and SRGBToLinear().

## ◆ Color() [2/4]

impeller::Color::Color | ( | const ColorHSB & | hsbColor | ) |
| explicit

Definition at line 127 of file color.cc.

127 : Color(hsbColor.ToRGBA()) {}

## ◆ Color() [3/4]

impeller::Color::Color | ( | const Vector4 & | value | ) |
| explicit

Definition at line 129 of file color.cc.

130 : red(value.x), green(value.y), blue(value.z), alpha(value.w) {}

## ◆ Color() [4/4]

constexpr impeller::Color::Color | ( | Scalar | r,
|  | Scalar | g,
|  | Scalar | b,
|  | Scalar | a
| ) |  |
| inline constexpr

Definition at line 151 of file color.h.

152 : red(r), green(g), blue(b), alpha(a) {}

## Member Function Documentation

## ◆ AliceBlue()

static constexpr Color impeller::Color::AliceBlue | ( |  | ) |
| inline static constexpr

Definition at line 274 of file color.h.

274 {
275 return {240.0f / 255.0f, 248.0f / 255.0f, 255.0f / 255.0f, 1.0f};
276 }

Referenced by impeller::testing::TEST_P().

## ◆ AntiqueWhite()

static constexpr Color impeller::Color::AntiqueWhite | ( |  | ) |
| inline static constexpr

Definition at line 278 of file color.h.

278 {
279 return {250.0f / 255.0f, 235.0f / 255.0f, 215.0f / 255.0f, 1.0f};
280 }

Referenced by impeller::testing::TEST_P().

## ◆ ApplyColorMatrix()

Color impeller::Color::ApplyColorMatrix | ( | const ColorMatrix & | color_matrix | ) | const

A color filter that transforms colors through a 4x5 color matrix.

       This filter can be used to change the saturation of pixels, convert
       from YUV to RGB, etc.

       Each channel of the output color is clamped to the 0 to 1 range.

See also
  `ColorMatrix`

Definition at line 366 of file color.cc.

366 {
367 auto* c = color_matrix.array;
368 return Color(
369 c[0] * red + c[1] * green + c[2] * blue + c[3] * alpha + c[4],
370 c[5] * red + c[6] * green + c[7] * blue + c[8] * alpha + c[9],
371 c[10] * red + c[11] * green + c[12] * blue + c[13] * alpha + c[14],
372 c[15] * red + c[16] * green + c[17] * blue + c[18] * alpha + c[19])
373 .Clamp01();
374 }

References alpha, impeller::ColorMatrix::array, blue, Color(), green, and red.

Referenced by impeller::testing::TEST().

## ◆ Aqua()

static constexpr Color impeller::Color::Aqua | ( |  | ) |
| inline static constexpr

Definition at line 282 of file color.h.

282 {
283 return {0.0f / 255.0f, 255.0f / 255.0f, 255.0f / 255.0f, 1.0f};
284 }

## ◆ AquaMarine()

static constexpr Color impeller::Color::AquaMarine | ( |  | ) |
| inline static constexpr

Definition at line 286 of file color.h.

286 {
287 return {127.0f / 255.0f, 255.0f / 255.0f, 212.0f / 255.0f, 1.0f};
288 }

## ◆ Azure()

static constexpr Color impeller::Color::Azure | ( |  | ) |
| inline static constexpr

Definition at line 290 of file color.h.

290 {
291 return {240.0f / 255.0f, 255.0f / 255.0f, 255.0f / 255.0f, 1.0f};
292 }

## ◆ Beige()

static constexpr Color impeller::Color::Beige | ( |  | ) |
| inline static constexpr

Definition at line 294 of file color.h.

294 {
295 return {245.0f / 255.0f, 245.0f / 255.0f, 220.0f / 255.0f, 1.0f};
296 }

## ◆ Bisque()

static constexpr Color impeller::Color::Bisque | ( |  | ) |
| inline static constexpr

Definition at line 298 of file color.h.

298 {
299 return {255.0f / 255.0f, 228.0f / 255.0f, 196.0f / 255.0f, 1.0f};
300 }

## ◆ Black()

static constexpr Color impeller::Color::Black | ( |  | ) |
| inline static constexpr

Definition at line 258 of file color.h.

258 { return {0.0f, 0.0f, 0.0f, 1.0f}; }

Referenced by impeller::testing::BlendModeTest(), impeller::testing::TEST(), and impeller::testing::TEST_P().

## ◆ BlackTransparent()

static constexpr Color impeller::Color::BlackTransparent | ( |  | ) |
| inline static constexpr

Definition at line 262 of file color.h.

262 { return {0.0f, 0.0f, 0.0f, 0.0f}; }

Referenced by Blend(), impeller::testing::TEST(), impeller::testing::TEST_P(), and Unpremultiply().

## ◆ BlanchedAlmond()

static constexpr Color impeller::Color::BlanchedAlmond | ( |  | ) |
| inline static constexpr

Definition at line 302 of file color.h.

302 {
303 return {255.0f / 255.0f, 235.0f / 255.0f, 205.0f / 255.0f, 1.0f};
304 }

## ◆ Blend()

Color impeller::Color::Blend | ( | Color | source,
|  | BlendMode | blend_mode
| ) |  | const

Blends an unpremultiplied destination color into a given unpremultiplied source color to form a new unpremultiplied color.

If either the source or destination are premultiplied, the result will be incorrect.

Definition at line 222 of file color.cc.

222 {
223 Color dst = *this;
224
225 switch (blend_mode) {
226 case BlendMode::kClear:
227 return Color::BlackTransparent();
228 case BlendMode::kSource:
229 return src;
230 case BlendMode::kDestination:
231 return dst;
232 case BlendMode::kSourceOver:
233 // r = s + (1-sa)*d
234 return (src.Premultiply() + dst.Premultiply() * (1 - src.alpha))
235 .Unpremultiply();
236 case BlendMode::kDestinationOver:
237 // r = d + (1-da)*s
238 return (dst.Premultiply() + src.Premultiply() * (1 - dst.alpha))
239 .Unpremultiply();
240 case BlendMode::kSourceIn:
241 // r = s * da
242 return (src.Premultiply() * dst.alpha).Unpremultiply();
243 case BlendMode::kDestinationIn:
244 // r = d * sa
245 return (dst.Premultiply() * src.alpha).Unpremultiply();
246 case BlendMode::kSourceOut:
247 // r = s * ( 1- da)
248 return (src.Premultiply() * (1 - dst.alpha)).Unpremultiply();
249 case BlendMode::kDestinationOut:
250 // r = d * (1-sa)
251 return (dst.Premultiply() * (1 - src.alpha)).Unpremultiply();
252 case BlendMode::kSourceATop:
253 // r = s*da + d*(1-sa)
254 return (src.Premultiply() * dst.alpha +
255 dst.Premultiply() * (1 - src.alpha))
256 .Unpremultiply();
257 case BlendMode::kDestinationATop:
258 // r = d*sa + s*(1-da)
259 return (dst.Premultiply() * src.alpha +
260 src.Premultiply() * (1 - dst.alpha))
261 .Unpremultiply();
262 case BlendMode::kXor:
263 // r = s*(1-da) + d*(1-sa)
264 return (src.Premultiply() * (1 - dst.alpha) +
265 dst.Premultiply() * (1 - src.alpha))
266 .Unpremultiply();
267 case BlendMode::kPlus:
268 // r = min(s + d, 1)
269 return (Min(src.Premultiply() + dst.Premultiply(), 1)).Unpremultiply();
270 case BlendMode::kModulate:
271 // r = s*d
272 return (src.Premultiply() * dst.Premultiply()).Unpremultiply();
273 case BlendMode::kScreen: {
274 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
275 return s + d - s * d;
276 });
277 }
278 case BlendMode::kOverlay:
279 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
280 // The same as HardLight, but with the source and destination reversed.
281 Vector3 screen_src = 2.0 * d - 1.0;
282 Vector3 screen = screen_src + s - screen_src * s;
283 return ComponentChoose(s * (2.0 * d), //
284 screen, //
285 d, //
286 0.5);
287 });
288 case BlendMode::kDarken:
289 return DoColorBlend(
290 dst, src, [](Vector3 d, Vector3 s) -> Vector3 { return d.Min(s); });
291 case BlendMode::kLighten:
292 return DoColorBlend(
293 dst, src, [](Vector3 d, Vector3 s) -> Vector3 { return d.Max(s); });
294 case BlendMode::kColorDodge:
295 return DoColorBlendComponents(dst, src, [](Scalar d, Scalar s) -> Scalar {
296 if (d < kEhCloseEnough) {
297 return 0.0f;
298 }
299 if (1.0 - s < kEhCloseEnough) {
300 return 1.0f;
301 }
302 return std::min(1.0f, d / (1.0f - s));
303 });
304 case BlendMode::kColorBurn:
305 return DoColorBlendComponents(dst, src, [](Scalar d, Scalar s) -> Scalar {
306 if (1.0 - d < kEhCloseEnough) {
307 return 1.0f;
308 }
309 if (s < kEhCloseEnough) {
310 return 0.0f;
311 }
312 return 1.0f - std::min(1.0f, (1.0f - d) / s);
313 });
314 case BlendMode::kHardLight:
315 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
316 Vector3 screen_src = 2.0 * s - 1.0;
317 Vector3 screen = screen_src + d - screen_src * d;
318 return ComponentChoose(d * (2.0 * s), //
319 screen, //
320 s, //
321 0.5);
322 });
323 case BlendMode::kSoftLight:
324 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
325 Vector3 D = ComponentChoose(((16.0 * d - 12.0) * d + 4.0) * d, //
326 Vector3(std::sqrt(d.x), std::sqrt(d.y),
327 std::sqrt(d.z)), //
328 d, //
329 0.25);
330 return ComponentChoose(d - (1.0 - 2.0 * s) * d * (1.0 - d), //
331 d + (2.0 * s - 1.0) * (D - d), //
332 s, //
333 0.5);
334 });
335 case BlendMode::kDifference:
336 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
337 return (d - s).Abs();
338 });
339 case BlendMode::kExclusion:
340 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
341 return d + s - 2.0f * d * s;
342 });
343 case BlendMode::kMultiply:
344 return DoColorBlend(
345 dst, src, [](Vector3 d, Vector3 s) -> Vector3 { return d * s; });
346 case BlendMode::kHue: {
347 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
348 return SetLuminosity(SetSaturation(s, Saturation(d)), Luminosity(d));
349 });
350 }
351 case BlendMode::kSaturation:
352 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
353 return SetLuminosity(SetSaturation(d, Saturation(s)), Luminosity(d));
354 });
355 case BlendMode::kColor:
356 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
357 return SetLuminosity(s, Luminosity(d));
358 });
359 case BlendMode::kLuminosity:
360 return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
361 return SetLuminosity(d, Luminosity(s));
362 });
363 }
364 }

References alpha, BlackTransparent(), impeller::ComponentChoose(), impeller::DoColorBlend(), impeller::DoColorBlendComponents(), impeller::kClear, impeller::kColor, impeller::kColorBurn, impeller::kColorDodge, impeller::kDarken, impeller::kDestination, impeller::kDestinationATop, impeller::kDestinationIn, impeller::kDestinationOut, impeller::kDestinationOver, impeller::kDifference, impeller::kEhCloseEnough, impeller::kExclusion, impeller::kHardLight, impeller::kHue, impeller::kLighten, impeller::kLuminosity, impeller::kModulate, impeller::kMultiply, impeller::kOverlay, impeller::kPlus, impeller::kSaturation, impeller::kScreen, impeller::kSoftLight, impeller::kSource, impeller::kSourceATop, impeller::kSourceIn, impeller::kSourceOut, impeller::kSourceOver, impeller::kXor, impeller::Luminosity(), impeller::Vector3::Max(), impeller::Vector3::Min(), impeller::Min(), Premultiply(), impeller::Saturation(), impeller::SetLuminosity(), impeller::SetSaturation(), impeller::Vector3::x, impeller::Vector3::y, and impeller::Vector3::z.

Referenced by impeller::testing::BlendModeTest(), and impeller::testing::TEST_P().

## ◆ Blue()

static constexpr Color impeller::Color::Blue | ( |  | ) |
| inline static constexpr

Definition at line 268 of file color.h.

268 { return {0.0f, 0.0f, 1.0f, 1.0f}; }

Referenced by impeller::testing::TEST(), and impeller::testing::TEST_P().

## ◆ BlueViolet()

static constexpr Color impeller::Color::BlueViolet | ( |  | ) |
| inline static constexpr

Definition at line 306 of file color.h.

306 {
307 return {138.0f / 255.0f, 43.0f / 255.0f, 226.0f / 255.0f, 1.0f};
308 }

## ◆ Brown()

static constexpr Color impeller::Color::Brown | ( |  | ) |
| inline static constexpr

Definition at line 310 of file color.h.

310 {
311 return {165.0f / 255.0f, 42.0f / 255.0f, 42.0f / 255.0f, 1.0f};
312 }

## ◆ BurlyWood()

static constexpr Color impeller::Color::BurlyWood | ( |  | ) |
| inline static constexpr

Definition at line 314 of file color.h.

314 {
315 return {222.0f / 255.0f, 184.0f / 255.0f, 135.0f / 255.0f, 1.0f};
316 }

## ◆ CadetBlue()

static constexpr Color impeller::Color::CadetBlue | ( |  | ) |
| inline static constexpr

Definition at line 318 of file color.h.

318 {
319 return {95.0f / 255.0f, 158.0f / 255.0f, 160.0f / 255.0f, 1.0f};
320 }

## ◆ Chartreuse()

static constexpr Color impeller::Color::Chartreuse | ( |  | ) |
| inline static constexpr

Definition at line 322 of file color.h.

322 {
323 return {127.0f / 255.0f, 255.0f / 255.0f, 0.0f / 255.0f, 1.0f};
324 }

## ◆ Chocolate()

static constexpr Color impeller::Color::Chocolate | ( |  | ) |
| inline static constexpr

Definition at line 326 of file color.h.

326 {
327 return {210.0f / 255.0f, 105.0f / 255.0f, 30.0f / 255.0f, 1.0f};
328 }

## ◆ Clamp01()

constexpr Color impeller::Color::Clamp01 | ( |  | ) | const
| inline constexpr

Definition at line 238 of file color.h.

238 {
239 return Color(std::clamp(red, 0.0f, 1.0f), std::clamp(green, 0.0f, 1.0f),
240 std::clamp(blue, 0.0f, 1.0f), std::clamp(alpha, 0.0f, 1.0f));
241 }

References alpha, blue, Color(), green, and red.

Referenced by impeller::testing::TEST().

## ◆ Coral()

static constexpr Color impeller::Color::Coral | ( |  | ) |
| inline static constexpr

Definition at line 330 of file color.h.

330 {
331 return {255.0f / 255.0f, 127.0f / 255.0f, 80.0f / 255.0f, 1.0f};
332 }

Referenced by impeller::testing::TEST_P().

## ◆ CornflowerBlue()

static constexpr Color impeller::Color::CornflowerBlue | ( |  | ) |
| inline static constexpr

Definition at line 334 of file color.h.

334 {
335 return {100.0f / 255.0f, 149.0f / 255.0f, 237.0f / 255.0f, 1.0f};
336 }

Referenced by impeller::testing::BlendModeTest(), and impeller::testing::TEST_P().

## ◆ Cornsilk()

static constexpr Color impeller::Color::Cornsilk | ( |  | ) |
| inline static constexpr

Definition at line 338 of file color.h.

338 {
339 return {255.0f / 255.0f, 248.0f / 255.0f, 220.0f / 255.0f, 1.0f};
340 }

## ◆ Crimson()

static constexpr Color impeller::Color::Crimson | ( |  | ) |
| inline static constexpr

Definition at line 342 of file color.h.

342 {
343 return {220.0f / 255.0f, 20.0f / 255.0f, 60.0f / 255.0f, 1.0f};
344 }

Referenced by impeller::testing::TEST_P().

## ◆ Cyan()

static constexpr Color impeller::Color::Cyan | ( |  | ) |
| inline static constexpr

Definition at line 346 of file color.h.

346 {
347 return {0.0f / 255.0f, 255.0f / 255.0f, 255.0f / 255.0f, 1.0f};
348 }

## ◆ DarkBlue()

static constexpr Color impeller::Color::DarkBlue | ( |  | ) |
| inline static constexpr

Definition at line 350 of file color.h.

350 {
351 return {0.0f / 255.0f, 0.0f / 255.0f, 139.0f / 255.0f, 1.0f};
352 }

Referenced by impeller::testing::TEST_P().

## ◆ DarkCyan()

static constexpr Color impeller::Color::DarkCyan | ( |  | ) |
| inline static constexpr

Definition at line 354 of file color.h.

354 {
355 return {0.0f / 255.0f, 139.0f / 255.0f, 139.0f / 255.0f, 1.0f};
356 }

## ◆ DarkGoldenrod()

static constexpr Color impeller::Color::DarkGoldenrod | ( |  | ) |
| inline static constexpr

Definition at line 358 of file color.h.

358 {
359 return {184.0f / 255.0f, 134.0f / 255.0f, 11.0f / 255.0f, 1.0f};
360 }

## ◆ DarkGray()

static constexpr Color impeller::Color::DarkGray | ( |  | ) |
| inline static constexpr

Definition at line 362 of file color.h.

362 {
363 return {169.0f / 255.0f, 169.0f / 255.0f, 169.0f / 255.0f, 1.0f};
364 }

## ◆ DarkGreen()

static constexpr Color impeller::Color::DarkGreen | ( |  | ) |
| inline static constexpr

Definition at line 366 of file color.h.

366 {
367 return {0.0f / 255.0f, 100.0f / 255.0f, 0.0f / 255.0f, 1.0f};
368 }

Referenced by impeller::testing::TEST_P().

## ◆ DarkGrey()

static constexpr Color impeller::Color::DarkGrey | ( |  | ) |
| inline static constexpr

Definition at line 370 of file color.h.

370 {
371 return {169.0f / 255.0f, 169.0f / 255.0f, 169.0f / 255.0f, 1.0f};
372 }

## ◆ DarkKhaki()

static constexpr Color impeller::Color::DarkKhaki | ( |  | ) |
| inline static constexpr

Definition at line 374 of file color.h.

374 {
375 return {189.0f / 255.0f, 183.0f / 255.0f, 107.0f / 255.0f, 1.0f};
376 }

## ◆ DarkMagenta()

static constexpr Color impeller::Color::DarkMagenta | ( |  | ) |
| inline static constexpr

Definition at line 378 of file color.h.

378 {
379 return {139.0f / 255.0f, 0.0f / 255.0f, 139.0f / 255.0f, 1.0f};
380 }

Referenced by impeller::testing::TEST_P().

## ◆ DarkOliveGreen()

static constexpr Color impeller::Color::DarkOliveGreen | ( |  | ) |
| inline static constexpr

Definition at line 382 of file color.h.

382 {
383 return {85.0f / 255.0f, 107.0f / 255.0f, 47.0f / 255.0f, 1.0f};
384 }

## ◆ DarkOrange()

static constexpr Color impeller::Color::DarkOrange | ( |  | ) |
| inline static constexpr

Definition at line 386 of file color.h.

386 {
387 return {255.0f / 255.0f, 140.0f / 255.0f, 0.0f / 255.0f, 1.0f};
388 }

## ◆ DarkOrchid()

static constexpr Color impeller::Color::DarkOrchid | ( |  | ) |
| inline static constexpr

Definition at line 390 of file color.h.

390 {
391 return {153.0f / 255.0f, 50.0f / 255.0f, 204.0f / 255.0f, 1.0f};
392 }

## ◆ DarkRed()

static constexpr Color impeller::Color::DarkRed | ( |  | ) |
| inline static constexpr

Definition at line 394 of file color.h.

394 {
395 return {139.0f / 255.0f, 0.0f / 255.0f, 0.0f / 255.0f, 1.0f};
396 }

## ◆ DarkSalmon()

static constexpr Color impeller::Color::DarkSalmon | ( |  | ) |
| inline static constexpr

Definition at line 398 of file color.h.

398 {
399 return {233.0f / 255.0f, 150.0f / 255.0f, 122.0f / 255.0f, 1.0f};
400 }

## ◆ DarkSeagreen()

static constexpr Color impeller::Color::DarkSeagreen | ( |  | ) |
| inline static constexpr

Definition at line 402 of file color.h.

402 {
403 return {143.0f / 255.0f, 188.0f / 255.0f, 143.0f / 255.0f, 1.0f};
404 }

## ◆ DarkSlateBlue()

static constexpr Color impeller::Color::DarkSlateBlue | ( |  | ) |
| inline static constexpr

Definition at line 406 of file color.h.

406 {
407 return {72.0f / 255.0f, 61.0f / 255.0f, 139.0f / 255.0f, 1.0f};
408 }

## ◆ DarkSlateGray()

static constexpr Color impeller::Color::DarkSlateGray | ( |  | ) |
| inline static constexpr

Definition at line 410 of file color.h.

410 {
411 return {47.0f / 255.0f, 79.0f / 255.0f, 79.0f / 255.0f, 1.0f};
412 }

Referenced by impeller::SurfaceGLES::WrapFBO(), impeller::SurfaceVK::WrapSwapchainImage(), and impeller::WrapTextureWithRenderTarget().

## ◆ DarkSlateGrey()

static constexpr Color impeller::Color::DarkSlateGrey | ( |  | ) |
| inline static constexpr

Definition at line 414 of file color.h.

414 {
415 return {47.0f / 255.0f, 79.0f / 255.0f, 79.0f / 255.0f, 1.0f};
416 }

## ◆ DarkTurquoise()

static constexpr Color impeller::Color::DarkTurquoise | ( |  | ) |
| inline static constexpr

Definition at line 418 of file color.h.

418 {
419 return {0.0f / 255.0f, 206.0f / 255.0f, 209.0f / 255.0f, 1.0f};
420 }

## ◆ DarkViolet()

static constexpr Color impeller::Color::DarkViolet | ( |  | ) |
| inline static constexpr

Definition at line 422 of file color.h.

422 {
423 return {148.0f / 255.0f, 0.0f / 255.0f, 211.0f / 255.0f, 1.0f};
424 }

## ◆ DeepPink()

static constexpr Color impeller::Color::DeepPink | ( |  | ) |
| inline static constexpr

Definition at line 426 of file color.h.

426 {
427 return {255.0f / 255.0f, 20.0f / 255.0f, 147.0f / 255.0f, 1.0f};
428 }

Referenced by impeller::testing::TEST_P().

## ◆ DeepSkyBlue()

static constexpr Color impeller::Color::DeepSkyBlue | ( |  | ) |
| inline static constexpr

Definition at line 430 of file color.h.

430 {
431 return {0.0f / 255.0f, 191.0f / 255.0f, 255.0f / 255.0f, 1.0f};
432 }

## ◆ DimGray()

static constexpr Color impeller::Color::DimGray | ( |  | ) |
| inline static constexpr

Definition at line 434 of file color.h.

434 {
435 return {105.0f / 255.0f, 105.0f / 255.0f, 105.0f / 255.0f, 1.0f};
436 }

## ◆ DimGrey()

static constexpr Color impeller::Color::DimGrey | ( |  | ) |
| inline static constexpr

Definition at line 438 of file color.h.

438 {
439 return {105.0f / 255.0f, 105.0f / 255.0f, 105.0f / 255.0f, 1.0f};
440 }

## ◆ DodgerBlue()

static constexpr Color impeller::Color::DodgerBlue | ( |  | ) |
| inline static constexpr

Definition at line 442 of file color.h.

442 {
443 return {30.0f / 255.0f, 144.0f / 255.0f, 255.0f / 255.0f, 1.0f};
444 }

## ◆ Firebrick()

static constexpr Color impeller::Color::Firebrick | ( |  | ) |
| inline static constexpr

Definition at line 446 of file color.h.

446 {
447 return {178.0f / 255.0f, 34.0f / 255.0f, 34.0f / 255.0f, 1.0f};
448 }

## ◆ FloralWhite()

static constexpr Color impeller::Color::FloralWhite | ( |  | ) |
| inline static constexpr

Definition at line 450 of file color.h.

450 {
451 return {255.0f / 255.0f, 250.0f / 255.0f, 240.0f / 255.0f, 1.0f};
452 }

## ◆ ForestGreen()

static constexpr Color impeller::Color::ForestGreen | ( |  | ) |
| inline static constexpr

Definition at line 454 of file color.h.

454 {
455 return {34.0f / 255.0f, 139.0f / 255.0f, 34.0f / 255.0f, 1.0f};
456 }

## ◆ Fuchsia()

static constexpr Color impeller::Color::Fuchsia | ( |  | ) |
| inline static constexpr

Definition at line 458 of file color.h.

458 {
459 return {255.0f / 255.0f, 0.0f / 255.0f, 255.0f / 255.0f, 1.0f};
460 }

Referenced by impeller::testing::TEST_P().

## ◆ Gainsboro()

static constexpr Color impeller::Color::Gainsboro | ( |  | ) |
| inline static constexpr

Definition at line 462 of file color.h.

462 {
463 return {220.0f / 255.0f, 220.0f / 255.0f, 220.0f / 255.0f, 1.0f};
464 }

## ◆ Ghostwhite()

static constexpr Color impeller::Color::Ghostwhite | ( |  | ) |
| inline static constexpr

Definition at line 466 of file color.h.

466 {
467 return {248.0f / 255.0f, 248.0f / 255.0f, 255.0f / 255.0f, 1.0f};
468 }

## ◆ Gold()

static constexpr Color impeller::Color::Gold | ( |  | ) |
| inline static constexpr

Definition at line 470 of file color.h.

470 {
471 return {255.0f / 255.0f, 215.0f / 255.0f, 0.0f / 255.0f, 1.0f};
472 }

## ◆ Goldenrod()

static constexpr Color impeller::Color::Goldenrod | ( |  | ) |
| inline static constexpr

Definition at line 474 of file color.h.

474 {
475 return {218.0f / 255.0f, 165.0f / 255.0f, 32.0f / 255.0f, 1.0f};
476 }

## ◆ Gray()

static constexpr Color impeller::Color::Gray | ( |  | ) |
| inline static constexpr

Definition at line 478 of file color.h.

478 {
479 return {128.0f / 255.0f, 128.0f / 255.0f, 128.0f / 255.0f, 1.0f};
480 }

## ◆ Green()

static constexpr Color impeller::Color::Green | ( |  | ) |
| inline static constexpr

Definition at line 266 of file color.h.

266 { return {0.0f, 1.0f, 0.0f, 1.0f}; }

Referenced by impeller::testing::TEST(), and impeller::testing::TEST_P().

## ◆ GreenYellow()

static constexpr Color impeller::Color::GreenYellow | ( |  | ) |
| inline static constexpr

Definition at line 482 of file color.h.

482 {
483 return {173.0f / 255.0f, 255.0f / 255.0f, 47.0f / 255.0f, 1.0f};
484 }

Referenced by impeller::testing::TEST_P().

## ◆ Grey()

static constexpr Color impeller::Color::Grey | ( |  | ) |
| inline static constexpr

Definition at line 486 of file color.h.

486 {
487 return {128.0f / 255.0f, 128.0f / 255.0f, 128.0f / 255.0f, 1.0f};
488 }

Referenced by impeller::testing::TEST_P().

## ◆ Honeydew()

static constexpr Color impeller::Color::Honeydew | ( |  | ) |
| inline static constexpr

Definition at line 490 of file color.h.

490 {
491 return {240.0f / 255.0f, 255.0f / 255.0f, 240.0f / 255.0f, 1.0f};
492 }

## ◆ HotPink()

static constexpr Color impeller::Color::HotPink | ( |  | ) |
| inline static constexpr

Definition at line 494 of file color.h.

494 {
495 return {255.0f / 255.0f, 105.0f / 255.0f, 180.0f / 255.0f, 1.0f};
496 }

## ◆ IndianRed()

static constexpr Color impeller::Color::IndianRed | ( |  | ) |
| inline static constexpr

Definition at line 498 of file color.h.

498 {
499 return {205.0f / 255.0f, 92.0f / 255.0f, 92.0f / 255.0f, 1.0f};
500 }

## ◆ Indigo()

static constexpr Color impeller::Color::Indigo | ( |  | ) |
| inline static constexpr

Definition at line 502 of file color.h.

502 {
503 return {75.0f / 255.0f, 0.0f / 255.0f, 130.0f / 255.0f, 1.0f};
504 }

## ◆ IsOpaque()

constexpr bool impeller::Color::IsOpaque | ( |  | ) | const
| inline constexpr

Definition at line 886 of file color.h.

886 { return alpha == 1.0f; }

References alpha.

Referenced by impeller::SolidColorContents::IsOpaque().

## ◆ IsTransparent()

constexpr bool impeller::Color::IsTransparent | ( |  | ) | const
| inline constexpr

Definition at line 884 of file color.h.

884 { return alpha == 0.0f; }

References alpha.

## ◆ Ivory()

static constexpr Color impeller::Color::Ivory | ( |  | ) |
| inline static constexpr

Definition at line 506 of file color.h.

506 {
507 return {255.0f / 255.0f, 255.0f / 255.0f, 240.0f / 255.0f, 1.0f};
508 }

## ◆ Khaki()

static constexpr Color impeller::Color::Khaki | ( |  | ) |
| inline static constexpr

Definition at line 510 of file color.h.

510 {
511 return {240.0f / 255.0f, 230.0f / 255.0f, 140.0f / 255.0f, 1.0f};
512 }

## ◆ Lavender()

static constexpr Color impeller::Color::Lavender | ( |  | ) |
| inline static constexpr

Definition at line 514 of file color.h.

514 {
515 return {230.0f / 255.0f, 230.0f / 255.0f, 250.0f / 255.0f, 1.0f};
516 }

## ◆ LavenderBlush()

static constexpr Color impeller::Color::LavenderBlush | ( |  | ) |
| inline static constexpr

Definition at line 518 of file color.h.

518 {
519 return {255.0f / 255.0f, 240.0f / 255.0f, 245.0f / 255.0f, 1.0f};
520 }

## ◆ LawnGreen()

static constexpr Color impeller::Color::LawnGreen | ( |  | ) |
| inline static constexpr

Definition at line 522 of file color.h.

522 {
523 return {124.0f / 255.0f, 252.0f / 255.0f, 0.0f / 255.0f, 1.0f};
524 }

## ◆ LemonChiffon()

static constexpr Color impeller::Color::LemonChiffon | ( |  | ) |
| inline static constexpr

Definition at line 526 of file color.h.

526 {
527 return {255.0f / 255.0f, 250.0f / 255.0f, 205.0f / 255.0f, 1.0f};
528 }

## ◆ Lerp()

constexpr static Color impeller::Color::Lerp | ( | Color | a,
|  | Color | b,
|  | Scalar | t
| ) |  |
| inline static constexpr

Return a color that is linearly interpolated between colors a and b, according to the value of t.

Parameters

  a | The lower color.
  b | The upper color.
  t | A value between 0.0f and 1.0f, inclusive.

Returns
  constexpr Color

Definition at line 234 of file color.h.

234 {
235 return a + (b - a) * t;
236 }

Referenced by impeller::CreateGradientBuffer(), impeller::DoColorBlend(), impeller::DoColorBlendComponents(), and impeller::testing::TEST().

## ◆ LightBlue()

static constexpr Color impeller::Color::LightBlue | ( |  | ) |
| inline static constexpr

Definition at line 530 of file color.h.

530 {
531 return {173.0f / 255.0f, 216.0f / 255.0f, 230.0f / 255.0f, 1.0f};
532 }

## ◆ LightCoral()

static constexpr Color impeller::Color::LightCoral | ( |  | ) |
| inline static constexpr

Definition at line 534 of file color.h.

534 {
535 return {240.0f / 255.0f, 128.0f / 255.0f, 128.0f / 255.0f, 1.0f};
536 }

Referenced by impeller::testing::TEST_P().

## ◆ LightCyan()

static constexpr Color impeller::Color::LightCyan | ( |  | ) |
| inline static constexpr

Definition at line 538 of file color.h.

538 {
539 return {224.0f / 255.0f, 255.0f / 255.0f, 255.0f / 255.0f, 1.0f};
540 }

## ◆ LightGoldenrodYellow()

static constexpr Color impeller::Color::LightGoldenrodYellow | ( |  | ) |
| inline static constexpr

Definition at line 542 of file color.h.

542 {
543 return {50.0f / 255.0f, 250.0f / 255.0f, 210.0f / 255.0f, 1.0f};
544 }

## ◆ LightGray()

static constexpr Color impeller::Color::LightGray | ( |  | ) |
| inline static constexpr

Definition at line 546 of file color.h.

546 {
547 return {211.0f / 255.0f, 211.0f / 255.0f, 211.0f / 255.0f, 1.0f};
548 }

## ◆ LightGreen()

static constexpr Color impeller::Color::LightGreen | ( |  | ) |
| inline static constexpr

Definition at line 550 of file color.h.

550 {
551 return {144.0f / 255.0f, 238.0f / 255.0f, 144.0f / 255.0f, 1.0f};
552 }

## ◆ LightGrey()

static constexpr Color impeller::Color::LightGrey | ( |  | ) |
| inline static constexpr

Definition at line 554 of file color.h.

554 {
555 return {211.0f / 255.0f, 211.0f / 255.0f, 211.0f / 255.0f, 1.0f};
556 }

## ◆ LightPink()

static constexpr Color impeller::Color::LightPink | ( |  | ) |
| inline static constexpr

Definition at line 558 of file color.h.

558 {
559 return {255.0f / 255.0f, 182.0f / 255.0f, 193.0f / 255.0f, 1.0f};
560 }

## ◆ LightSalmon()

static constexpr Color impeller::Color::LightSalmon | ( |  | ) |
| inline static constexpr

Definition at line 562 of file color.h.

562 {
563 return {255.0f / 255.0f, 160.0f / 255.0f, 122.0f / 255.0f, 1.0f};
564 }

## ◆ LightSeaGreen()

static constexpr Color impeller::Color::LightSeaGreen | ( |  | ) |
| inline static constexpr

Definition at line 566 of file color.h.

566 {
567 return {32.0f / 255.0f, 178.0f / 255.0f, 170.0f / 255.0f, 1.0f};
568 }

## ◆ LightSkyBlue()

static constexpr Color impeller::Color::LightSkyBlue | ( |  | ) |
| inline static constexpr

Definition at line 570 of file color.h.

570 {
571 return {135.0f / 255.0f, 206.0f / 255.0f, 250.0f / 255.0f, 1.0f};
572 }

## ◆ LightSlateGray()

static constexpr Color impeller::Color::LightSlateGray | ( |  | ) |
| inline static constexpr

Definition at line 574 of file color.h.

574 {
575 return {119.0f / 255.0f, 136.0f / 255.0f, 153.0f / 255.0f, 1.0f};
576 }

## ◆ LightSlateGrey()

static constexpr Color impeller::Color::LightSlateGrey | ( |  | ) |
| inline static constexpr

Definition at line 578 of file color.h.

578 {
579 return {119.0f / 255.0f, 136.0f / 255.0f, 153.0f / 255.0f, 1.0f};
580 }

## ◆ LightSteelBlue()

static constexpr Color impeller::Color::LightSteelBlue | ( |  | ) |
| inline static constexpr

Definition at line 582 of file color.h.

582 {
583 return {176.0f / 255.0f, 196.0f / 255.0f, 222.0f / 255.0f, 1.0f};
584 }

## ◆ LightYellow()

static constexpr Color impeller::Color::LightYellow | ( |  | ) |
| inline static constexpr

Definition at line 586 of file color.h.

586 {
587 return {255.0f / 255.0f, 255.0f / 255.0f, 224.0f / 255.0f, 1.0f};
588 }

## ◆ Lime()

static constexpr Color impeller::Color::Lime | ( |  | ) |
| inline static constexpr

Definition at line 590 of file color.h.

590 {
591 return {0.0f / 255.0f, 255.0f / 255.0f, 0.0f / 255.0f, 1.0f};
592 }

## ◆ LimeGreen()

static constexpr Color impeller::Color::LimeGreen | ( |  | ) |
| inline static constexpr

Definition at line 594 of file color.h.

594 {
595 return {50.0f / 255.0f, 205.0f / 255.0f, 50.0f / 255.0f, 1.0f};
596 }

Referenced by impeller::testing::BlendModeTest(), and impeller::testing::TEST_P().

## ◆ LinearToSRGB()

Color impeller::Color::LinearToSRGB | ( |  | ) | const

Convert the color from linear space to sRGB space.

       The color is assumed to be unpremultiplied. If the color is
       premultipled, the conversion output will be incorrect.

Definition at line 376 of file color.cc.

376 {
377 static auto conversion = [](Scalar component) {
378 if (component <= 0.0031308) {
379 return component * 12.92;
380 }
381 return 1.055 * pow(component, (1.0 / 2.4)) - 0.055;
382 };
383
384 return Color(conversion(red), conversion(green), conversion(blue), alpha);
385 }

References alpha, blue, Color(), green, and red.

Referenced by impeller::testing::TEST().

## ◆ Linen()

static constexpr Color impeller::Color::Linen | ( |  | ) |
| inline static constexpr

Definition at line 598 of file color.h.

598 {
599 return {250.0f / 255.0f, 240.0f / 255.0f, 230.0f / 255.0f, 1.0f};
600 }

## ◆ Magenta()

static constexpr Color impeller::Color::Magenta | ( |  | ) |
| inline static constexpr

Definition at line 602 of file color.h.

602 {
603 return {255.0f / 255.0f, 0.0f / 255.0f, 255.0f / 255.0f, 1.0f};
604 }

Referenced by impeller::testing::TEST_P().

## ◆ MakeRGBA8()

static constexpr Color impeller::Color::MakeRGBA8 | ( | uint8_t | r,
|  | uint8_t | g,
|  | uint8_t | b,
|  | uint8_t | a
| ) |  |
| inline static constexpr

Definition at line 154 of file color.h.

154 {
155 return Color(
156 static_cast<Scalar>(r) / 255.0f, static_cast<Scalar>(g) / 255.0f,
157 static_cast<Scalar>(b) / 255.0f, static_cast<Scalar>(a) / 255.0f);
158 }

References Color().

Referenced by impeller::testing::TEST(), and impeller::testing::TEST_P().

## ◆ Maroon()

static constexpr Color impeller::Color::Maroon | ( |  | ) |
| inline static constexpr

Definition at line 606 of file color.h.

606 {
607 return {128.0f / 255.0f, 0.0f / 255.0f, 0.0f / 255.0f, 1.0f};
608 }

Referenced by impeller::testing::TEST_P().

## ◆ MediumAquamarine()

static constexpr Color impeller::Color::MediumAquamarine | ( |  | ) |
| inline static constexpr

Definition at line 610 of file color.h.

610 {
611 return {102.0f / 255.0f, 205.0f / 255.0f, 170.0f / 255.0f, 1.0f};
612 }

## ◆ MediumBlue()

static constexpr Color impeller::Color::MediumBlue | ( |  | ) |
| inline static constexpr

Definition at line 614 of file color.h.

614 {
615 return {0.0f / 255.0f, 0.0f / 255.0f, 205.0f / 255.0f, 1.0f};
616 }

## ◆ MediumOrchid()

static constexpr Color impeller::Color::MediumOrchid | ( |  | ) |
| inline static constexpr

Definition at line 618 of file color.h.

618 {
619 return {186.0f / 255.0f, 85.0f / 255.0f, 211.0f / 255.0f, 1.0f};
620 }

## ◆ MediumPurple()

static constexpr Color impeller::Color::MediumPurple | ( |  | ) |
| inline static constexpr

Definition at line 622 of file color.h.

622 {
623 return {147.0f / 255.0f, 112.0f / 255.0f, 219.0f / 255.0f, 1.0f};
624 }

## ◆ MediumSeagreen()

static constexpr Color impeller::Color::MediumSeagreen | ( |  | ) |
| inline static constexpr

Definition at line 626 of file color.h.

626 {
627 return {60.0f / 255.0f, 179.0f / 255.0f, 113.0f / 255.0f, 1.0f};
628 }

## ◆ MediumSlateBlue()

static constexpr Color impeller::Color::MediumSlateBlue | ( |  | ) |
| inline static constexpr

Definition at line 630 of file color.h.

630 {
631 return {123.0f / 255.0f, 104.0f / 255.0f, 238.0f / 255.0f, 1.0f};
632 }

## ◆ MediumSpringGreen()

static constexpr Color impeller::Color::MediumSpringGreen | ( |  | ) |
| inline static constexpr

Definition at line 634 of file color.h.

634 {
635 return {0.0f / 255.0f, 250.0f / 255.0f, 154.0f / 255.0f, 1.0f};
636 }

## ◆ MediumTurquoise()

static constexpr Color impeller::Color::MediumTurquoise | ( |  | ) |
| inline static constexpr

Definition at line 638 of file color.h.

638 {
639 return {72.0f / 255.0f, 209.0f / 255.0f, 204.0f / 255.0f, 1.0f};
640 }

Referenced by impeller::testing::TEST_P().

## ◆ MediumVioletRed()

static constexpr Color impeller::Color::MediumVioletRed | ( |  | ) |
| inline static constexpr

Definition at line 642 of file color.h.

642 {
643 return {199.0f / 255.0f, 21.0f / 255.0f, 133.0f / 255.0f, 1.0f};
644 }

## ◆ MidnightBlue()

static constexpr Color impeller::Color::MidnightBlue | ( |  | ) |
| inline static constexpr

Definition at line 646 of file color.h.

646 {
647 return {25.0f / 255.0f, 25.0f / 255.0f, 112.0f / 255.0f, 1.0f};
648 }

## ◆ MintCream()

static constexpr Color impeller::Color::MintCream | ( |  | ) |
| inline static constexpr

Definition at line 650 of file color.h.

650 {
651 return {245.0f / 255.0f, 255.0f / 255.0f, 250.0f / 255.0f, 1.0f};
652 }

Referenced by impeller::testing::TEST_P().

## ◆ MistyRose()

static constexpr Color impeller::Color::MistyRose | ( |  | ) |
| inline static constexpr

Definition at line 654 of file color.h.

654 {
655 return {255.0f / 255.0f, 228.0f / 255.0f, 225.0f / 255.0f, 1.0f};
656 }

## ◆ Moccasin()

static constexpr Color impeller::Color::Moccasin | ( |  | ) |
| inline static constexpr

Definition at line 658 of file color.h.

658 {
659 return {255.0f / 255.0f, 228.0f / 255.0f, 181.0f / 255.0f, 1.0f};
660 }

## ◆ NavajoWhite()

static constexpr Color impeller::Color::NavajoWhite | ( |  | ) |
| inline static constexpr

Definition at line 662 of file color.h.

662 {
663 return {255.0f / 255.0f, 222.0f / 255.0f, 173.0f / 255.0f, 1.0f};
664 }

## ◆ Navy()

static constexpr Color impeller::Color::Navy | ( |  | ) |
| inline static constexpr

Definition at line 666 of file color.h.

666 {
667 return {0.0f / 255.0f, 0.0f / 255.0f, 128.0f / 255.0f, 1.0f};
668 }

## ◆ OldLace()

static constexpr Color impeller::Color::OldLace | ( |  | ) |
| inline static constexpr

Definition at line 670 of file color.h.

670 {
671 return {253.0f / 255.0f, 245.0f / 255.0f, 230.0f / 255.0f, 1.0f};
672 }

## ◆ Olive()

static constexpr Color impeller::Color::Olive | ( |  | ) |
| inline static constexpr

Definition at line 674 of file color.h.

674 {
675 return {128.0f / 255.0f, 128.0f / 255.0f, 0.0f / 255.0f, 1.0f};
676 }

## ◆ OliveDrab()

static constexpr Color impeller::Color::OliveDrab | ( |  | ) |
| inline static constexpr

Definition at line 678 of file color.h.

678 {
679 return {107.0f / 255.0f, 142.0f / 255.0f, 35.0f / 255.0f, 1.0f};
680 }

## ◆ operator*() [1/2]

constexpr Color impeller::Color::operator* | ( | const Color & | c | ) | const
| inline constexpr

Definition at line 194 of file color.h.

194 {
195 return {red * c.red, green * c.green, blue * c.blue, alpha * c.alpha};
196 }

References alpha, blue, green, and red.

## ◆ operator*() [2/2]

template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>

constexpr Color impeller::Color::operator* | ( | T | value | ) | const
| inline constexpr

Definition at line 199 of file color.h.

199 {
200 auto v = static_cast<Scalar>(value);
201 return {red * v, green * v, blue * v, alpha * v};
202 }

References alpha, blue, green, and red.

## ◆ operator+() [1/2]

constexpr Color impeller::Color::operator+ | ( | const Color & | c | ) | const
| inline constexpr

Definition at line 174 of file color.h.

174 {
175 return {red + c.red, green + c.green, blue + c.blue, alpha + c.alpha};
176 }

References alpha, blue, green, and red.

## ◆ operator+() [2/2]

template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>

constexpr Color impeller::Color::operator+ | ( | T | value | ) | const
| inline constexpr

Definition at line 179 of file color.h.

179 {
180 auto v = static_cast<Scalar>(value);
181 return {red + v, green + v, blue + v, alpha + v};
182 }

References alpha, blue, green, and red.

## ◆ operator-() [1/2]

constexpr Color impeller::Color::operator- | ( | const Color & | c | ) | const
| inline constexpr

Definition at line 184 of file color.h.

184 {
185 return {red - c.red, green - c.green, blue - c.blue, alpha - c.alpha};
186 }

References alpha, blue, green, and red.

## ◆ operator-() [2/2]

template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>

constexpr Color impeller::Color::operator- | ( | T | value | ) | const
| inline constexpr

Definition at line 189 of file color.h.

189 {
190 auto v = static_cast<Scalar>(value);
191 return {red - v, green - v, blue - v, alpha - v};
192 }

References alpha, blue, green, and red.

## ◆ operator/() [1/2]

constexpr Color impeller::Color::operator/ | ( | const Color & | c | ) | const
| inline constexpr

Definition at line 204 of file color.h.

204 {
205 return {red * c.red, green * c.green, blue * c.blue, alpha * c.alpha};
206 }

References alpha, blue, green, and red.

## ◆ operator/() [2/2]

template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>

constexpr Color impeller::Color::operator/ | ( | T | value | ) | const
| inline constexpr

Definition at line 209 of file color.h.

209 {
210 auto v = static_cast<Scalar>(value);
211 return {red / v, green / v, blue / v, alpha / v};
212 }

References alpha, blue, green, and red.

## ◆ operator==()

constexpr bool impeller::Color::operator== | ( | const Color & | c | ) | const
| inline constexpr

Definition at line 169 of file color.h.

169 {
170 return ScalarNearlyEqual(red, c.red) && ScalarNearlyEqual(green, c.green) &&
171 ScalarNearlyEqual(blue, c.blue) && ScalarNearlyEqual(alpha, c.alpha);
172 }

References alpha, blue, green, red, and impeller::ScalarNearlyEqual().

## ◆ Orange()

static constexpr Color impeller::Color::Orange | ( |  | ) |
| inline static constexpr

Definition at line 682 of file color.h.

682 {
683 return {255.0f / 255.0f, 165.0f / 255.0f, 0.0f / 255.0f, 1.0f};
684 }

Referenced by impeller::testing::TEST_P().

## ◆ OrangeRed()

static constexpr Color impeller::Color::OrangeRed | ( |  | ) |
| inline static constexpr

Definition at line 686 of file color.h.

686 {
687 return {255.0f / 255.0f, 69.0f / 255.0f, 0.0f / 255.0f, 1.0f};
688 }

Referenced by impeller::testing::TEST_P().

## ◆ Orchid()

static constexpr Color impeller::Color::Orchid | ( |  | ) |
| inline static constexpr

Definition at line 690 of file color.h.

690 {
691 return {218.0f / 255.0f, 112.0f / 255.0f, 214.0f / 255.0f, 1.0f};
692 }

## ◆ PaleGoldenrod()

static constexpr Color impeller::Color::PaleGoldenrod | ( |  | ) |
| inline static constexpr

Definition at line 694 of file color.h.

694 {
695 return {238.0f / 255.0f, 232.0f / 255.0f, 170.0f / 255.0f, 1.0f};
696 }

## ◆ PaleGreen()

static constexpr Color impeller::Color::PaleGreen | ( |  | ) |
| inline static constexpr

Definition at line 698 of file color.h.

698 {
699 return {152.0f / 255.0f, 251.0f / 255.0f, 152.0f / 255.0f, 1.0f};
700 }

## ◆ PaleTurquoise()

static constexpr Color impeller::Color::PaleTurquoise | ( |  | ) |
| inline static constexpr

Definition at line 702 of file color.h.

702 {
703 return {175.0f / 255.0f, 238.0f / 255.0f, 238.0f / 255.0f, 1.0f};
704 }

## ◆ PaleVioletRed()

static constexpr Color impeller::Color::PaleVioletRed | ( |  | ) |
| inline static constexpr

Definition at line 706 of file color.h.

706 {
707 return {219.0f / 255.0f, 112.0f / 255.0f, 147.0f / 255.0f, 1.0f};
708 }

## ◆ PapayaWhip()

static constexpr Color impeller::Color::PapayaWhip | ( |  | ) |
| inline static constexpr

Definition at line 710 of file color.h.

710 {
711 return {255.0f / 255.0f, 239.0f / 255.0f, 213.0f / 255.0f, 1.0f};
712 }

## ◆ Peachpuff()

static constexpr Color impeller::Color::Peachpuff | ( |  | ) |
| inline static constexpr

Definition at line 714 of file color.h.

714 {
715 return {255.0f / 255.0f, 218.0f / 255.0f, 185.0f / 255.0f, 1.0f};
716 }

## ◆ Peru()

static constexpr Color impeller::Color::Peru | ( |  | ) |
| inline static constexpr

Definition at line 718 of file color.h.

718 {
719 return {205.0f / 255.0f, 133.0f / 255.0f, 63.0f / 255.0f, 1.0f};
720 }

## ◆ Pink()

static constexpr Color impeller::Color::Pink | ( |  | ) |
| inline static constexpr

Definition at line 722 of file color.h.

722 {
723 return {255.0f / 255.0f, 192.0f / 255.0f, 203.0f / 255.0f, 1.0f};
724 }

## ◆ Plum()

static constexpr Color impeller::Color::Plum | ( |  | ) |
| inline static constexpr

Definition at line 726 of file color.h.

726 {
727 return {221.0f / 255.0f, 160.0f / 255.0f, 221.0f / 255.0f, 1.0f};
728 }

## ◆ PowderBlue()

static constexpr Color impeller::Color::PowderBlue | ( |  | ) |
| inline static constexpr

Definition at line 730 of file color.h.

730 {
731 return {176.0f / 255.0f, 224.0f / 255.0f, 230.0f / 255.0f, 1.0f};
732 }

## ◆ Premultiply()

constexpr Color impeller::Color::Premultiply | ( |  | ) | const
| inline constexpr

Definition at line 214 of file color.h.

214 {
215 return {red * alpha, green * alpha, blue * alpha, alpha};
216 }

References alpha, blue, green, and red.

Referenced by Blend(), impeller::DoColorBlend(), impeller::DoColorBlendComponents(), impeller::MakeVertices(), impeller::SolidRRectBlurContents::SetColor(), impeller::testing::TEST(), and impeller::testing::TEST_P().

## ◆ Purple()

static constexpr Color impeller::Color::Purple | ( |  | ) |
| inline static constexpr

Definition at line 734 of file color.h.

734 {
735 return {128.0f / 255.0f, 0.0f / 255.0f, 128.0f / 255.0f, 1.0f};
736 }

Referenced by impeller::testing::TEST_P().

## ◆ Random()

static Color impeller::Color::Random | ( |  | ) |
| inline static

Definition at line 842 of file color.h.

842 {
843 return {
844 // This method is not used for cryptographic purposes.
845 // NOLINTBEGIN(clang-analyzer-security.insecureAPI.rand)
846 static_cast<Scalar>((std::rand() % 255) / 255.0f), //
847 static_cast<Scalar>((std::rand() % 255) / 255.0f), //
848 static_cast<Scalar>((std::rand() % 255) / 255.0f), //
849 // NOLINTEND(clang-analyzer-security.insecureAPI.rand)
850 1.0f //
851
852 };
853 }

Referenced by impeller::testing::TEST_P().

## ◆ Red()

static constexpr Color impeller::Color::Red | ( |  | ) |
| inline static constexpr

Definition at line 264 of file color.h.

264 { return {1.0f, 0.0f, 0.0f, 1.0f}; }

Referenced by impeller::testing::CreatePassWithRectPath(), impeller::testing::TEST(), impeller::scene::testing::TEST_P(), and impeller::testing::TEST_P().

## ◆ RosyBrown()

static constexpr Color impeller::Color::RosyBrown | ( |  | ) |
| inline static constexpr

Definition at line 738 of file color.h.

738 {
739 return {188.0f / 255.0f, 143.0f / 255.0f, 143.0f / 255.0f, 1.0f};
740 }

## ◆ RoyalBlue()

static constexpr Color impeller::Color::RoyalBlue | ( |  | ) |
| inline static constexpr

Definition at line 742 of file color.h.

742 {
743 return {65.0f / 255.0f, 105.0f / 255.0f, 225.0f / 255.0f, 1.0f};
744 }

## ◆ SaddleBrown()

static constexpr Color impeller::Color::SaddleBrown | ( |  | ) |
| inline static constexpr

Definition at line 746 of file color.h.

746 {
747 return {139.0f / 255.0f, 69.0f / 255.0f, 19.0f / 255.0f, 1.0f};
748 }

## ◆ Salmon()

static constexpr Color impeller::Color::Salmon | ( |  | ) |
| inline static constexpr

Definition at line 750 of file color.h.

750 {
751 return {250.0f / 255.0f, 128.0f / 255.0f, 114.0f / 255.0f, 1.0f};
752 }

## ◆ SandyBrown()

static constexpr Color impeller::Color::SandyBrown | ( |  | ) |
| inline static constexpr

Definition at line 754 of file color.h.

754 {
755 return {244.0f / 255.0f, 164.0f / 255.0f, 96.0f / 255.0f, 1.0f};
756 }

## ◆ Seagreen()

static constexpr Color impeller::Color::Seagreen | ( |  | ) |
| inline static constexpr

Definition at line 758 of file color.h.

758 {
759 return {46.0f / 255.0f, 139.0f / 255.0f, 87.0f / 255.0f, 1.0f};
760 }

## ◆ Seashell()

static constexpr Color impeller::Color::Seashell | ( |  | ) |
| inline static constexpr

Definition at line 762 of file color.h.

762 {
763 return {255.0f / 255.0f, 245.0f / 255.0f, 238.0f / 255.0f, 1.0f};
764 }

## ◆ Sienna()

static constexpr Color impeller::Color::Sienna | ( |  | ) |
| inline static constexpr

Definition at line 766 of file color.h.

766 {
767 return {160.0f / 255.0f, 82.0f / 255.0f, 45.0f / 255.0f, 1.0f};
768 }

## ◆ Silver()

static constexpr Color impeller::Color::Silver | ( |  | ) |
| inline static constexpr

Definition at line 770 of file color.h.

770 {
771 return {192.0f / 255.0f, 192.0f / 255.0f, 192.0f / 255.0f, 1.0f};
772 }

## ◆ SkyBlue()

static constexpr Color impeller::Color::SkyBlue | ( |  | ) |
| inline static constexpr

Definition at line 774 of file color.h.

774 {
775 return {135.0f / 255.0f, 206.0f / 255.0f, 235.0f / 255.0f, 1.0f};
776 }

Referenced by impeller::testing::TEST_P().

## ◆ SlateBlue()

static constexpr Color impeller::Color::SlateBlue | ( |  | ) |
| inline static constexpr

Definition at line 778 of file color.h.

778 {
779 return {106.0f / 255.0f, 90.0f / 255.0f, 205.0f / 255.0f, 1.0f};
780 }

## ◆ SlateGray()

static constexpr Color impeller::Color::SlateGray | ( |  | ) |
| inline static constexpr

Definition at line 782 of file color.h.

782 {
783 return {112.0f / 255.0f, 128.0f / 255.0f, 144.0f / 255.0f, 1.0f};
784 }

## ◆ SlateGrey()

static constexpr Color impeller::Color::SlateGrey | ( |  | ) |
| inline static constexpr

Definition at line 786 of file color.h.

786 {
787 return {112.0f / 255.0f, 128.0f / 255.0f, 144.0f / 255.0f, 1.0f};
788 }

## ◆ Snow()

static constexpr Color impeller::Color::Snow | ( |  | ) |
| inline static constexpr

Definition at line 790 of file color.h.

790 {
791 return {255.0f / 255.0f, 250.0f / 255.0f, 250.0f / 255.0f, 1.0f};
792 }

## ◆ SpringGreen()

static constexpr Color impeller::Color::SpringGreen | ( |  | ) |
| inline static constexpr

Definition at line 794 of file color.h.

794 {
795 return {0.0f / 255.0f, 255.0f / 255.0f, 127.0f / 255.0f, 1.0f};
796 }

## ◆ SRGBToLinear()

Color impeller::Color::SRGBToLinear | ( |  | ) | const

Convert the color from sRGB space to linear space.

       The color is assumed to be unpremultiplied. If the color is
       premultipled, the conversion output will be incorrect.

Definition at line 387 of file color.cc.

387 {
388 static auto conversion = [](Scalar component) {
389 if (component <= 0.04045) {
390 return component / 12.92;
391 }
392 return pow((component + 0.055) / 1.055, 2.4);
393 };
394
395 return Color(conversion(red), conversion(green), conversion(blue), alpha);
396 }

References alpha, blue, Color(), green, and red.

Referenced by impeller::testing::TEST().

## ◆ SteelBlue()

static constexpr Color impeller::Color::SteelBlue | ( |  | ) |
| inline static constexpr

Definition at line 798 of file color.h.

798 {
799 return {70.0f / 255.0f, 130.0f / 255.0f, 180.0f / 255.0f, 1.0f};
800 }

## ◆ Tan()

static constexpr Color impeller::Color::Tan | ( |  | ) |
| inline static constexpr

Definition at line 802 of file color.h.

802 {
803 return {210.0f / 255.0f, 180.0f / 255.0f, 140.0f / 255.0f, 1.0f};
804 }

## ◆ Teal()

static constexpr Color impeller::Color::Teal | ( |  | ) |
| inline static constexpr

Definition at line 806 of file color.h.

806 {
807 return {0.0f / 255.0f, 128.0f / 255.0f, 128.0f / 255.0f, 1.0f};
808 }

## ◆ Thistle()

static constexpr Color impeller::Color::Thistle | ( |  | ) |
| inline static constexpr

Definition at line 810 of file color.h.

810 {
811 return {216.0f / 255.0f, 191.0f / 255.0f, 216.0f / 255.0f, 1.0f};
812 }

## ◆ ToIColor()

static constexpr uint32_t impeller::Color::ToIColor | ( | Color | color | ) |
| inline static constexpr

Convert this color to a 32-bit representation.

Definition at line 161 of file color.h.

161 {
162 return (((std::lround(color.alpha * 255.0f) & 0xff) << 24) |
163 ((std::lround(color.red * 255.0f) & 0xff) << 16) |
164 ((std::lround(color.green * 255.0f) & 0xff) << 8) |
165 ((std::lround(color.blue * 255.0f) & 0xff) << 0)) &
166 0xFFFFFFFF;
167 }

References alpha, blue, green, and red.

Referenced by impeller::AtlasContents::GenerateSubAtlas(), impeller::testing::TEST(), and impeller::testing::toColor().

## ◆ Tomato()

static constexpr Color impeller::Color::Tomato | ( |  | ) |
| inline static constexpr

Definition at line 814 of file color.h.

814 {
815 return {255.0f / 255.0f, 99.0f / 255.0f, 71.0f / 255.0f, 1.0f};
816 }

## ◆ ToR8G8B8A8()

constexpr std::array<uint8_t, 4> impeller::Color::ToR8G8B8A8 | ( |  | ) | const
| inline constexpr

Convert to R8G8B8A8 representation.

Returns
  constexpr std::array<u_int8, 4>

Definition at line 248 of file color.h.

248 {
249 uint8_t r = std::round(red * 255.0f);
250 uint8_t g = std::round(green * 255.0f);
251 uint8_t b = std::round(blue * 255.0f);
252 uint8_t a = std::round(alpha * 255.0f);
253 return {r, g, b, a};
254 }

References alpha, blue, green, and red.

Referenced by impeller::AppendColor(), and impeller::testing::TEST().

## ◆ Turquoise()

static constexpr Color impeller::Color::Turquoise | ( |  | ) |
| inline static constexpr

Definition at line 818 of file color.h.

818 {
819 return {64.0f / 255.0f, 224.0f / 255.0f, 208.0f / 255.0f, 1.0f};
820 }

## ◆ Unpremultiply()

constexpr Color impeller::Color::Unpremultiply | ( |  | ) | const
| inline constexpr

Definition at line 218 of file color.h.

218 {
219 if (ScalarNearlyEqual(alpha, 0.0f)) {
220 return Color::BlackTransparent();
221 }
222 return {red / alpha, green / alpha, blue / alpha, alpha};
223 }

References alpha, BlackTransparent(), blue, green, red, and impeller::ScalarNearlyEqual().

Referenced by impeller::DoColorBlend(), impeller::DoColorBlendComponents(), and impeller::testing::TEST().

## ◆ Violet()

static constexpr Color impeller::Color::Violet | ( |  | ) |
| inline static constexpr

Definition at line 822 of file color.h.

822 {
823 return {238.0f / 255.0f, 130.0f / 255.0f, 238.0f / 255.0f, 1.0f};
824 }

## ◆ Wheat()

static constexpr Color impeller::Color::Wheat | ( |  | ) |
| inline static constexpr

Definition at line 826 of file color.h.

826 {
827 return {245.0f / 255.0f, 222.0f / 255.0f, 179.0f / 255.0f, 1.0f};
828 }

## ◆ White()

static constexpr Color impeller::Color::White | ( |  | ) |
| inline static constexpr

Definition at line 256 of file color.h.

256 { return {1.0f, 1.0f, 1.0f, 1.0f}; }

Referenced by impeller::testing::BlendModeTest(), impeller::Paint::MaskBlurDescriptor::CreateMaskBlur(), impeller::scene::CuboidGeometry::GetVertexBuffer(), impeller::scene::PhysicallyBasedMaterial::MakeFromFlatbuffer(), impeller::SolidRRectBlurContents::Render(), impeller::testing::TEST(), and impeller::testing::TEST_P().

## ◆ Whitesmoke()

static constexpr Color impeller::Color::Whitesmoke | ( |  | ) |
| inline static constexpr

Definition at line 830 of file color.h.

830 {
831 return {245.0f / 255.0f, 245.0f / 255.0f, 245.0f / 255.0f, 1.0f};
832 }

## ◆ WhiteTransparent()

static constexpr Color impeller::Color::WhiteTransparent | ( |  | ) |
| inline static constexpr

Definition at line 260 of file color.h.

260 { return {1.0f, 1.0f, 1.0f, 0.0f}; }

Referenced by impeller::testing::TEST_P().

## ◆ WithAlpha()

constexpr Color impeller::Color::WithAlpha | ( | Scalar | new_alpha | ) | const
| inline constexpr

Definition at line 270 of file color.h.

270 {
271 return {red, green, blue, new_alpha};
272 }

References blue, green, and red.

Referenced by impeller::testing::BlendModeTest(), impeller::Canvas::DrawVertices(), impeller::SolidColorContents::GetColor(), impeller::TextContents::GetColor(), and impeller::testing::TEST_P().

## ◆ Yellow()

static constexpr Color impeller::Color::Yellow | ( |  | ) |
| inline static constexpr

Definition at line 834 of file color.h.

834 {
835 return {255.0f / 255.0f, 255.0f / 255.0f, 0.0f / 255.0f, 1.0f};
836 }

Referenced by impeller::testing::TEST(), and impeller::testing::TEST_P().

## ◆ YellowGreen()

static constexpr Color impeller::Color::YellowGreen | ( |  | ) |
| inline static constexpr

Definition at line 838 of file color.h.

838 {
839 return {154.0f / 255.0f, 205.0f / 255.0f, 50.0f / 255.0f, 1.0f};
840 }

## Member Data Documentation

## ◆ alpha

Scalar impeller::Color::alpha = 0.0

The alpha component of the color (0 to 1)

Definition at line 143 of file color.h.

Referenced by ApplyColorMatrix(), Blend(), impeller::OpacityPeepholePassDelegate::CanCollapseIntoParentPass(), Clamp01(), ColorNear(), impeller::ColorToString(), impeller::PaintPassDelegate::CreateContentsForSubpassTarget(), impeller::DoColorBlend(), impeller::DoColorBlendComponents(), impeller::Canvas::DrawAtlas(), impeller::Canvas::DrawImageRect(), impeller::DlDispatcher::drawShadow(), impeller::Canvas::DrawVertices(), impeller::EncodeCommandsInReactor(), impeller::ColorHSB::FromRGB(), impeller::SolidColorContents::GetColor(), impeller::TextContents::GetColor(), IsOpaque(), IsTransparent(), LinearToSRGB(), impeller::Min(), operator*(), operator+(), operator-(), impeller::operator-(), operator/(), impeller::operator/(), std::operator<<(), operator==(), Premultiply(), SRGBToLinear(), impeller::testing::TEST_P(), impeller::scene::importer::ToFBColor(), ToIColor(), impeller::ToMTLClearColor(), ToR8G8B8A8(), impeller::ToVector(), Unpremultiply(), and impeller::VKClearValueFromColor().

## ◆ blue

Scalar impeller::Color::blue = 0.0

The blue color component (0 to 1)

Definition at line 138 of file color.h.

Referenced by ApplyColorMatrix(), Clamp01(), ColorNear(), impeller::ColorToString(), impeller::DoColorBlendComponents(), impeller::DlDispatcher::drawShadow(), impeller::EncodeCommandsInReactor(), impeller::ColorHSB::FromRGB(), LinearToSRGB(), impeller::Min(), operator*(), operator+(), operator-(), impeller::operator-(), operator/(), impeller::operator/(), std::operator<<(), operator==(), Premultiply(), SRGBToLinear(), impeller::scene::importer::ToFBColor(), ToIColor(), impeller::ToMTLClearColor(), ToR8G8B8A8(), impeller::ToRGB(), impeller::ToVector(), Unpremultiply(), impeller::VKClearValueFromColor(), and WithAlpha().

## ◆ green

Scalar impeller::Color::green = 0.0

The green color component (0 to 1)

Definition at line 133 of file color.h.

Referenced by ApplyColorMatrix(), Clamp01(), ColorNear(), impeller::ColorToString(), impeller::DoColorBlendComponents(), impeller::DlDispatcher::drawShadow(), impeller::EncodeCommandsInReactor(), impeller::ColorHSB::FromRGB(), LinearToSRGB(), impeller::Min(), operator*(), operator+(), operator-(), impeller::operator-(), operator/(), impeller::operator/(), std::operator<<(), operator==(), Premultiply(), SRGBToLinear(), impeller::scene::importer::ToFBColor(), ToIColor(), impeller::ToMTLClearColor(), ToR8G8B8A8(), impeller::ToRGB(), impeller::ToVector(), Unpremultiply(), impeller::VKClearValueFromColor(), and WithAlpha().

## ◆ red

Scalar impeller::Color::red = 0.0

The red color component (0 to 1)

Definition at line 128 of file color.h.

Referenced by ApplyColorMatrix(), Clamp01(), ColorNear(), impeller::ColorToString(), impeller::DoColorBlendComponents(), impeller::DlDispatcher::drawShadow(), impeller::EncodeCommandsInReactor(), impeller::ColorHSB::FromRGB(), LinearToSRGB(), impeller::Min(), operator*(), operator+(), operator-(), impeller::operator-(), operator/(), impeller::operator/(), std::operator<<(), operator==(), Premultiply(), SRGBToLinear(), impeller::scene::importer::ToFBColor(), ToIColor(), impeller::ToMTLClearColor(), ToR8G8B8A8(), impeller::ToRGB(), impeller::ToVector(), Unpremultiply(), impeller::VKClearValueFromColor(), and WithAlpha().

The documentation for this struct was generated from the following files:

- impeller/geometry/color.h
- impeller/geometry/color.cc

impeller::BlendMode::kDestinationATop
@ kDestinationATop
impeller::Scalar
float Scalar
Definition: scalar.h:18
impeller::Color::Color
constexpr Color()
Definition: color.h:145
impeller::ComponentChoose
static constexpr Vector3 ComponentChoose(Vector3 a, Vector3 b, Vector3 value, Scalar cutoff)
Definition: color.cc:178
impeller::kEhCloseEnough
constexpr float kEhCloseEnough
Definition: constants.h:56
impeller::BlendMode::kLuminosity
@ kLuminosity
impeller::BlendMode::kSource
@ kSource
impeller::BlendMode::kColorDodge
@ kColorDodge
impeller::BlendMode::kDestination
@ kDestination
impeller::BlendMode::kDarken
@ kDarken
impeller::BlendMode::kColor
@ kColor
impeller::Color::alpha
Scalar alpha
Definition: color.h:143
impeller::BlendMode::kDestinationOver
@ kDestinationOver
impeller::BlendMode::kPlus
@ kPlus
impeller::BlendMode::kOverlay
@ kOverlay
impeller::Color::green
Scalar green
Definition: color.h:133
impeller::BlendMode::kModulate
@ kModulate
impeller::Min
static constexpr Color Min(Color c, float threshold)
Definition: color.cc:132
impeller::BlendMode::kSourceOut
@ kSourceOut
impeller::BlendMode::kSaturation
@ kSaturation
impeller::BlendMode::kDifference
@ kDifference
impeller::BlendMode::kLighten
@ kLighten
impeller::BlendMode::kSoftLight
@ kSoftLight
impeller::BlendMode::kColorBurn
@ kColorBurn
impeller::BlendMode::kHardLight
@ kHardLight
impeller::BlendMode::kClear
@ kClear
impeller::SetSaturation
static constexpr Vector3 SetSaturation(Vector3 color, Scalar saturation)
Definition: color.cc:171
impeller::SetLuminosity
static constexpr Vector3 SetLuminosity(Vector3 color, Scalar luminosity)
Definition: color.cc:160
impeller::Color::red
Scalar red
Definition: color.h:128
impeller::DoColorBlendComponents
static constexpr Color DoColorBlendComponents(Color d, Color s, const std::function< Scalar(Scalar, Scalar)> &blend_func)
Definition: color.cc:207
impeller::Luminosity
static constexpr Scalar Luminosity(Vector3 color)
Definition: color.cc:140
impeller::DoColorBlend
static constexpr Color DoColorBlend(Color d, Color s, const std::function< Vector3(Vector3, Vector3)> &blend_rgb_func)
Definition: color.cc:196
impeller::BlendMode::kDestinationIn
@ kDestinationIn
impeller::BlendMode::kExclusion
@ kExclusion
impeller::BlendMode::kDestinationOut
@ kDestinationOut
impeller::Color::BlackTransparent
static constexpr Color BlackTransparent()
Definition: color.h:262
impeller::BlendMode::kSourceIn
@ kSourceIn
impeller::BlendMode::kScreen
@ kScreen
impeller::ScalarNearlyEqual
constexpr bool ScalarNearlyEqual(Scalar x, Scalar y, Scalar tolerance=kEhCloseEnough)
Definition: scalar.h:30
impeller::BlendMode::kHue
@ kHue
impeller::BlendMode::kXor
@ kXor
impeller::Color::blue
Scalar blue
Definition: color.h:138
impeller::BlendMode::kSourceATop
@ kSourceATop
impeller::BlendMode::kMultiply
@ kMultiply
impeller::BlendMode::kSourceOver
@ kSourceOver
impeller::Saturation
static constexpr Scalar Saturation(Vector3 color)
Definition: color.cc:166