| Flutter Impeller |

stroke_path_geometry.h
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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 #ifndef FLUTTER_IMPELLER_ENTITY_GEOMETRY_STROKE_PATH_GEOMETRY_H_
6 #define FLUTTER_IMPELLER_ENTITY_GEOMETRY_STROKE_PATH_GEOMETRY_H_
7
8 #include "impeller/entity/geometry/geometry.h"
9
10 namespace impeller {
11
12 /// @brief A geometry that is created from a stroked path object.
13 class StrokePathGeometry final : public Geometry {
14 public:
15 StrokePathGeometry(const Path& path,
16 Scalar stroke_width,
17 Scalar miter_limit,
18 Cap stroke_cap,
19 Join stroke_join);
20
21 ~StrokePathGeometry();
22
23 Scalar GetStrokeWidth() const;
24
25 Scalar GetMiterLimit() const;
26
27 Cap GetStrokeCap() const;
28
29 Join GetStrokeJoin() const;
30
31 private:
32 // |Geometry|
33 GeometryResult GetPositionBuffer(const ContentContext& renderer,
34 const Entity& entity,
35 RenderPass& pass) const override;
36
37 // |Geometry|
38 GeometryResult GetPositionUVBuffer(Rect texture_coverage,
39 Matrix effect_transform,
40 const ContentContext& renderer,
41 const Entity& entity,
42 RenderPass& pass) const override;
43
44 // |Geometry|
45 GeometryResult::Mode GetResultMode() const override;
46
47 // |Geometry|
48 GeometryVertexType GetVertexType() const override;
49
50 // |Geometry|
51 std::optional<Rect> GetCoverage(const Matrix& transform) const override;
52
53 // Private for benchmarking and debugging
54 static std::vector<SolidFillVertexShader::PerVertexData>
55 GenerateSolidStrokeVertices(const Path::Polyline& polyline,
56 Scalar stroke_width,
57 Scalar miter_limit,
58 Join stroke_join,
59 Cap stroke_cap,
60 Scalar scale);
61
62 static std::vector<TextureFillVertexShader::PerVertexData>
63 GenerateSolidStrokeVerticesUV(const Path::Polyline& polyline,
64 Scalar stroke_width,
65 Scalar miter_limit,
66 Join stroke_join,
67 Cap stroke_cap,
68 Scalar scale,
69 Point texture_origin,
70 Size texture_size,
71 const Matrix& effect_transform);
72
73 friend class ImpellerBenchmarkAccessor;
74 friend class ImpellerEntityUnitTestAccessor;
75
76 bool SkipRendering() const;
77
78 Path path_;
79 Scalar stroke_width_;
80 Scalar miter_limit_;
81 Cap stroke_cap_;
82 Join stroke_join_;
83
84 StrokePathGeometry(const StrokePathGeometry&) = delete;
85
86 StrokePathGeometry& operator=(const StrokePathGeometry&) = delete;
87 };
88
89 } // namespace impeller
90
91 #endif // FLUTTER_IMPELLER_ENTITY_GEOMETRY_STROKE_PATH_GEOMETRY_H_
polyline
const Path::Polyline & polyline
Definition: stroke_path_geometry.cc:292
impeller::Scalar
float Scalar
Definition: scalar.h:18
impeller::StrokePathGeometry::~StrokePathGeometry
~StrokePathGeometry()
stroke_width
const Scalar stroke_width
Definition: stroke_path_geometry.cc:293
impeller::ImpellerEntityUnitTestAccessor
Definition: geometry_unittests.cc:52
impeller::GeometryVertexType
GeometryVertexType
Definition: geometry.h:49
impeller::GeometryResult::Mode
Mode
Definition: geometry.h:21
impeller::StrokePathGeometry::StrokePathGeometry
StrokePathGeometry(const Path &path, Scalar stroke_width, Scalar miter_limit, Cap stroke_cap, Join stroke_join)
Definition: stroke_path_geometry.cc:549
impeller::StrokePathGeometry
A geometry that is created from a stroked path object.
Definition: stroke_path_geometry.h:13
impeller::Path::Polyline
Definition: path.h:94
impeller::Entity
Definition: entity.h:21
impeller::TSize< Scalar >
impeller::Path
Paths are lightweight objects that describe a collection of linear, quadratic, or cubic segments....
Definition: path.h:51
impeller::StrokePathGeometry::GetMiterLimit
Scalar GetMiterLimit() const
Definition: stroke_path_geometry.cc:566
geometry.h
impeller::GeometryResult
Definition: geometry.h:20
impeller::StrokePathGeometry::GetStrokeCap
Cap GetStrokeCap() const
Definition: stroke_path_geometry.cc:570
impeller::StrokePathGeometry::GetStrokeJoin
Join GetStrokeJoin() const
Definition: stroke_path_geometry.cc:574
impeller::RenderPass
Render passes encode render commands directed as one specific render target into an underlying comman...
Definition: render_pass.h:33
impeller::Geometry
Definition: geometry.h:83
impeller::Join
Join
Definition: path.h:23
impeller::TPoint< Scalar >
scale
const Scalar scale
Definition: stroke_path_geometry.cc:297
impeller
Definition: aiks_blur_unittests.cc:20
impeller::ContentContext
Definition: content_context.h:392
impeller::TRect< Scalar >
impeller::ImpellerBenchmarkAccessor
Definition: geometry_benchmarks.cc:17
impeller::Matrix
A 4x4 matrix using column-major storage.
Definition: matrix.h:37
impeller::StrokePathGeometry::GetStrokeWidth
Scalar GetStrokeWidth() const
Definition: stroke_path_geometry.cc:562
impeller::Cap
Cap
Definition: path.h:17