impeller::Geometry Class Reference

#include <geometry.h>

Inheritance diagram for impeller::Geometry:

Public Member Functions
	Geometry ()
virtual	~Geometry ()
virtual GeometryResult	GetPositionBuffer (const ContentContext &renderer, const Entity &entity, RenderPass &pass)=0
virtual GeometryResult	GetPositionUVBuffer (Rect texture_coverage, Matrix effect_transform, const ContentContext &renderer, const Entity &entity, RenderPass &pass)
virtual GeometryVertexType	GetVertexType () const =0
virtual std::optional< Rect >	GetCoverage (const Matrix &transform) const =0
virtual bool	CoversArea (const Matrix &transform, const Rect &rect) const
	Determines if this geometry, transformed by the given transform, will completely cover all surface area of the given rect. More...

Static Public Member Functions
static std::unique_ptr< Geometry >	MakeFillPath (const Path &path, std::optional< Rect > inner_rect=std::nullopt)
static std::unique_ptr< Geometry >	MakeStrokePath (const Path &path, Scalar stroke_width=0.0, Scalar miter_limit=4.0, Cap stroke_cap=Cap::kButt, Join stroke_join=Join::kMiter)
static std::unique_ptr< Geometry >	MakeCover ()
static std::unique_ptr< Geometry >	MakeRect (Rect rect)
static std::unique_ptr< Geometry >	MakePointField (std::vector< Point > points, Scalar radius, bool round)

Detailed Description

Definition at line 54 of file geometry.h.

Constructor & Destructor Documentation

Geometry()

impeller::Geometry::Geometry ( )

default

~Geometry()

impeller::Geometry::~Geometry ( )

virtualdefault

Member Function Documentation

CoversArea()

bool impeller::Geometry::CoversArea ( const Matrix &  transform, const Rect &  rect  ) const

virtual

Determines if this geometry, transformed by the given transform, will completely cover all surface area of the given rect.

This is a conservative estimate useful for certain optimizations.

Returns

true if the transformed geometry is guaranteed to cover the given rect. May return false in many undetected cases where the transformed geometry does in fact cover the rect.

Reimplemented in impeller::FillPathGeometry, impeller::CoverGeometry, and impeller::RectGeometry.

Definition at line 146 of file geometry.cc.

                                                                         {
  return false;
}

GetCoverage()

virtual std::optional<Rect> impeller::Geometry::GetCoverage ( const Matrix &  transform ) const

pure virtual

Implemented in impeller::VerticesGeometry.

GetPositionBuffer()

virtual GeometryResult impeller::Geometry::GetPositionBuffer ( const ContentContext &  renderer, const Entity &  entity, RenderPass &  pass  )

pure virtual

Implemented in impeller::VerticesGeometry.

GetPositionUVBuffer()

GeometryResult impeller::Geometry::GetPositionUVBuffer ( Rect  texture_coverage, Matrix  effect_transform, const ContentContext &  renderer, const Entity &  entity, RenderPass &  pass  )

virtual

Reimplemented in impeller::VerticesGeometry.

Definition at line 105 of file geometry.cc.

                                                               {
  return {};
}

GetVertexType()

virtual GeometryVertexType impeller::Geometry::GetVertexType ( ) const

pure virtual

Implemented in impeller::VerticesGeometry.

MakeCover()

std::unique_ptr< Geometry > impeller::Geometry::MakeCover ( )

static

Definition at line 138 of file geometry.cc.

                                            {
  return std::make_unique<CoverGeometry>();
}

Referenced by impeller::Paint::CreateContentsForEntity(), and impeller::testing::TEST_P().

MakeFillPath()

std::unique_ptr< Geometry > impeller::Geometry::MakeFillPath ( const Path &  path, std::optional< Rect >  inner_rect = std::nullopt  )

static

Definition at line 113 of file geometry.cc.

                                  {
  return std::make_unique<FillPathGeometry>(path, inner_rect);
}

Referenced by impeller::Canvas::ClipPath(), impeller::Canvas::ClipRRect(), impeller::Paint::CreateContentsForEntity(), impeller::Canvas::DrawRRect(), impeller::SolidColorContents::Make(), impeller::testing::TEST(), and impeller::testing::TEST_P().

MakePointField()

std::unique_ptr< Geometry > impeller::Geometry::MakePointField ( std::vector< Point >  points, Scalar  radius, bool  round  )

static

Definition at line 119 of file geometry.cc.

                                                               {
  return std::make_unique<PointFieldGeometry>(std::move(points), radius, round);
}

Referenced by impeller::Canvas::DrawPoints(), and impeller::testing::TEST_P().

MakeRect()

std::unique_ptr< Geometry > impeller::Geometry::MakeRect ( Rect  rect )

static

Definition at line 142 of file geometry.cc.

                                                    {
  return std::make_unique<RectGeometry>(rect);
}

Referenced by impeller::Canvas::ClipRect(), impeller::Paint::MaskBlurDescriptor::CreateMaskBlur(), impeller::Canvas::DrawRect(), impeller::Canvas::DrawVertices(), impeller::PipelineBlend(), impeller::testing::TEST(), and impeller::testing::TEST_P().

MakeStrokePath()

std::unique_ptr< Geometry > impeller::Geometry::MakeStrokePath ( const Path &  path, Scalar  stroke_width = 0.0, Scalar  miter_limit = 4.0, Cap  stroke_cap = Cap::kButt, Join  stroke_join = Join::kMiter  )

static

Definition at line 125 of file geometry.cc.

                                                                     {
  // Skia behaves like this.
  if (miter_limit < 0) {
    miter_limit = 4.0;
  }
  return std::make_unique<StrokePathGeometry>(path, stroke_width, miter_limit,
                                              stroke_cap, stroke_join);
}

Referenced by impeller::Paint::CreateContentsForEntity(), and impeller::testing::TEST_P().

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

• impeller/entity/geometry/geometry.h
• impeller/entity/geometry/geometry.cc