impeller::StrokeEllipseGeometry Class Reference

A Geometry class that produces fillable vertices representing the stroked outline of an ellipse with the given bounds. More...

#include <ellipse_geometry.h>

Inheritance diagram for impeller::StrokeEllipseGeometry:

Public Member Functions
	StrokeEllipseGeometry (const Rect &rect, const StrokeParameters &parameters)
Public Member Functions inherited from impeller::StrokeSegmentsGeometry
	~StrokeSegmentsGeometry () override
Scalar	GetStrokeWidth () const
Scalar	GetMiterLimit () const
Cap	GetStrokeCap () const
Join	GetStrokeJoin () const
Scalar	ComputeAlphaCoverage (const Matrix &transform) const override
Public Member Functions inherited from impeller::Geometry
virtual	~Geometry ()
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...
virtual bool	IsAxisAlignedRect () const
virtual bool	CanApplyMaskFilter () const

Protected Member Functions
const PathSource &	GetSource () const override
Protected Member Functions inherited from impeller::StrokePathSourceGeometry
	StrokePathSourceGeometry (const StrokeParameters &parameters)
std::optional< Rect >	GetCoverage (const Matrix &transform) const override
void	Dispatch (PathAndArcSegmentReceiver &receiver, Tessellator &tessellator, Scalar scale) const override
Protected Member Functions inherited from impeller::StrokeSegmentsGeometry
	StrokeSegmentsGeometry (const StrokeParameters &parameters)
std::optional< Rect >	GetStrokeCoverage (const Matrix &transform, const Rect &segment_bounds) const

Additional Inherited Members
Static Public Member Functions inherited from impeller::Geometry
static std::unique_ptr< Geometry >	MakeFillPath (const flutter::DlPath &path, std::optional< Rect > inner_rect=std::nullopt)
static std::unique_ptr< Geometry >	MakeStrokePath (const flutter::DlPath &path, const StrokeParameters &stroke={})
static std::unique_ptr< Geometry >	MakeCover ()
static std::unique_ptr< Geometry >	MakeRect (const Rect &rect)
static std::unique_ptr< Geometry >	MakeOval (const Rect &rect)
static std::unique_ptr< Geometry >	MakeLine (const Point &p0, const Point &p1, const StrokeParameters &stroke)
static std::unique_ptr< Geometry >	MakeCircle (const Point &center, Scalar radius)
static std::unique_ptr< Geometry >	MakeStrokedCircle (const Point &center, Scalar radius, Scalar stroke_width)
static std::unique_ptr< Geometry >	MakeFilledArc (const Rect &oval_bounds, Degrees start, Degrees sweep, bool include_center)
static std::unique_ptr< Geometry >	MakeStrokedArc (const Rect &oval_bounds, Degrees start, Degrees sweep, const StrokeParameters &stroke)
static std::unique_ptr< Geometry >	MakeRoundRect (const Rect &rect, const Size &radii)
static std::unique_ptr< Geometry >	MakeRoundSuperellipse (const Rect &rect, Scalar corner_radius)
static Scalar	ComputeStrokeAlphaCoverage (const Matrix &entity, Scalar stroke_width)
	Compute an alpha value to simulate lower coverage of fractional pixel strokes. More...
static GeometryResult	ComputePositionGeometry (const ContentContext &renderer, const Tessellator::VertexGenerator &generator, const Entity &entity, RenderPass &pass)

Detailed Description

A Geometry class that produces fillable vertices representing the stroked outline of an ellipse with the given bounds.

This class uses the |StrokePathSourceGeometry| base class to do the work by providing an |EllipsePathSoure| iterator.

Definition at line 54 of file ellipse_geometry.h.

Constructor & Destructor Documentation

StrokeEllipseGeometry()

impeller::StrokeEllipseGeometry::StrokeEllipseGeometry	(	const Rect &	rect,
		const StrokeParameters &	parameters
	)

Definition at line 39 of file ellipse_geometry.cc.

    : StrokePathSourceGeometry(parameters), ellipse_source_(bounds) {}

Member Function Documentation

GetSource()

const PathSource & impeller::StrokeEllipseGeometry::GetSource ( ) const

overrideprotectedvirtual

The PathSource object that will be iterated to produce the raw vertices to be stroked.

Implements impeller::StrokePathSourceGeometry.

Definition at line 43 of file ellipse_geometry.cc.

                                                         {
  return ellipse_source_;
}

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

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