Flutter Impeller
impeller::FillPathGeometry Class Referencefinal

A geometry that is created from a filled path object. More...

#include <fill_path_geometry.h>

Inheritance diagram for impeller::FillPathGeometry:
impeller::Geometry

Public Member Functions

 FillPathGeometry (const Path &path, std::optional< Rect > inner_rect=std::nullopt)
 
 ~FillPathGeometry ()=default
 
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
virtual bool IsAxisAlignedRect () const
 
virtual bool CanApplyMaskFilter () const
 

Additional Inherited Members

- Static Public Member Functions inherited from impeller::Geometry
static std::shared_ptr< GeometryMakeFillPath (const Path &path, std::optional< Rect > inner_rect=std::nullopt)
 
static std::shared_ptr< GeometryMakeStrokePath (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::shared_ptr< GeometryMakeCover ()
 
static std::shared_ptr< GeometryMakeRect (const Rect &rect)
 
static std::shared_ptr< GeometryMakeOval (const Rect &rect)
 
static std::shared_ptr< GeometryMakeLine (const Point &p0, const Point &p1, Scalar width, Cap cap)
 
static std::shared_ptr< GeometryMakeCircle (const Point &center, Scalar radius)
 
static std::shared_ptr< GeometryMakeStrokedCircle (const Point &center, Scalar radius, Scalar stroke_width)
 
static std::shared_ptr< GeometryMakeRoundRect (const Rect &rect, const Size &radii)
 
static std::shared_ptr< GeometryMakePointField (std::vector< Point > points, Scalar radius, bool round)
 
- Static Protected Member Functions inherited from impeller::Geometry
static GeometryResult ComputePositionGeometry (const ContentContext &renderer, const Tessellator::VertexGenerator &generator, const Entity &entity, RenderPass &pass)
 
static GeometryResult ComputePositionUVGeometry (const ContentContext &renderer, const Tessellator::VertexGenerator &generator, const Matrix &uv_transform, const Entity &entity, RenderPass &pass)
 

Detailed Description

A geometry that is created from a filled path object.

Definition at line 16 of file fill_path_geometry.h.

Constructor & Destructor Documentation

◆ FillPathGeometry()

impeller::FillPathGeometry::FillPathGeometry ( const Path path,
std::optional< Rect inner_rect = std::nullopt 
)
explicit

Definition at line 15 of file fill_path_geometry.cc.

17  : path_(path), inner_rect_(inner_rect) {}

◆ ~FillPathGeometry()

impeller::FillPathGeometry::~FillPathGeometry ( )
default

Member Function Documentation

◆ CoversArea()

bool impeller::FillPathGeometry::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 196 of file fill_path_geometry.cc.

197  {
198  if (!inner_rect_.has_value()) {
199  return false;
200  }
201  if (!transform.IsTranslationScaleOnly()) {
202  return false;
203  }
204  Rect coverage = inner_rect_->TransformBounds(transform);
205  return coverage.Contains(rect);
206 }

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::Rect
TRect< Scalar > Rect
Definition: rect.h:661