#include <round_rect_geometry.h>

Inheritance diagram for impeller::RoundRectGeometry:

Public Member Functions
	RoundRectGeometry (const Rect &bounds, const Size &radii)

	~RoundRectGeometry ()=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`.

bool	IsAxisAlignedRect () const override

Public Member Functions inherited from impeller::Geometry
virtual GeometryResult::Mode	GetResultMode () const

virtual bool	CanApplyMaskFilter () const

Private Member Functions
GeometryResult	GetPositionBuffer (const ContentContext &renderer, const Entity &entity, RenderPass &pass) const override

std::optional< Rect >	GetCoverage (const Matrix &transform) const override

Additional Inherited Members
Static Public Member Functions inherited from impeller::Geometry
static std::shared_ptr< Geometry >	MakeFillPath (const Path &path, std::optional< Rect > inner_rect=std::nullopt)

static std::shared_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::shared_ptr< Geometry >	MakeCover ()

static std::shared_ptr< Geometry >	MakeRect (const Rect &rect)

static std::shared_ptr< Geometry >	MakeOval (const Rect &rect)

static std::shared_ptr< Geometry >	MakeLine (const Point &p0, const Point &p1, Scalar width, Cap cap)

static std::shared_ptr< Geometry >	MakeCircle (const Point &center, Scalar radius)

static std::shared_ptr< Geometry >	MakeStrokedCircle (const Point &center, Scalar radius, Scalar stroke_width)

static std::shared_ptr< Geometry >	MakeRoundRect (const Rect &rect, const Size &radii)

static std::shared_ptr< Geometry >	MakePointField (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)

Detailed Description

Definition at line 16 of file round_rect_geometry.h.

Constructor & Destructor Documentation

◆ RoundRectGeometry()

impeller::RoundRectGeometry::RoundRectGeometry	(	const Rect &	bounds,
		const Size &	radii
	)

explicit

Definition at line 9 of file round_rect_geometry.cc.

10 : bounds_(bounds), radii_(radii) {}

◆ ~RoundRectGeometry()

impeller::RoundRectGeometry::~RoundRectGeometry ( )

default

Member Function Documentation

◆ CoversArea()

bool impeller::RoundRectGeometry::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 27 of file round_rect_geometry.cc.

                                                           {
  if (!transform.IsTranslationScaleOnly()) {
    return false;
  }
  bool flat_on_tb = bounds_.GetWidth() > radii_.width * 2;
  bool flat_on_lr = bounds_.GetHeight() > radii_.height * 2;
  if (!flat_on_tb && !flat_on_lr) {
    return false;
  }
  // We either transform the bounds and delta-transform the radii,
  // or we compute the vertical and horizontal bounds and then
  // transform each. Either way there are 2 transform operations.
  // We could also get a weaker answer by computing just the
  // "inner rect" and only doing a coverage analysis on that,
  // but this process will produce more culling results.
  if (flat_on_tb) {
    Rect vertical_bounds = bounds_.Expand(Size{-radii_.width, 0});
    Rect coverage = vertical_bounds.TransformBounds(transform);
    if (coverage.Contains(rect)) {
      return true;
    }
  }
  if (flat_on_lr) {
    Rect horizontal_bounds = bounds_.Expand(Size{0, -radii_.height});
    Rect coverage = horizontal_bounds.TransformBounds(transform);
    if (coverage.Contains(rect)) {
      return true;
    }
  }
  return false;
}

◆ GetCoverage()

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

overrideprivatevirtual

Implements impeller::Geometry.

Definition at line 22 of file round_rect_geometry.cc.

                                   {
  return bounds_.TransformBounds(transform);
}

◆ GetPositionBuffer()

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

overrideprivatevirtual

Implements impeller::Geometry.

Definition at line 12 of file round_rect_geometry.cc.

                            {
  return ComputePositionGeometry(renderer,
                                 renderer.GetTessellator()->FilledRoundRect(
                                     entity.GetTransform(), bounds_, radii_),
                                 entity, pass);
}

◆ IsAxisAlignedRect()

bool impeller::RoundRectGeometry::IsAxisAlignedRect ( ) const

overridevirtual

Reimplemented from impeller::Geometry.

Definition at line 60 of file round_rect_geometry.cc.

                                                {
  return false;
}

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

impeller/entity/geometry/round_rect_geometry.h
impeller/entity/geometry/round_rect_geometry.cc

Public Member Functions

Private Member Functions

Additional Inherited Members