#include <rect_geometry.h>

Inheritance diagram for impeller::RectGeometry:

Public Member Functions
	RectGeometry (Rect rect)

	~RectGeometry ()

bool	CoversArea (const Matrix &transform, const Rect &rect) const override
	Determines if this geometry, transformed by the given `transform`, will completely cover all surface area of the given `rect`. More...

Public Member Functions inherited from impeller::Geometry
	Geometry ()

virtual	~Geometry ()

Additional Inherited Members
Static Public Member Functions inherited from impeller::Geometry
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 11 of file rect_geometry.h.

Constructor & Destructor Documentation

◆ RectGeometry()

impeller::RectGeometry::RectGeometry ( Rect rect )

explicit

Definition at line 9 of file rect_geometry.cc.

9 : rect_(rect) {}

◆ ~RectGeometry()

impeller::RectGeometry::~RectGeometry ( )

default

Member Function Documentation

◆ CoversArea()

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

overridevirtual

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 from impeller::Geometry.

Definition at line 50 of file rect_geometry.cc.

                                                                              {
   if (!transform.IsTranslationScaleOnly()) {
     return false;
   }
   Rect coverage = rect_.TransformBounds(transform);
   return coverage.Contains(rect);
 }

References impeller::TRect< T >::Contains(), impeller::Matrix::IsTranslationScaleOnly(), and impeller::TRect< T >::TransformBounds().

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

impeller/entity/geometry/rect_geometry.h
impeller/entity/geometry/rect_geometry.cc