Flutter Impeller
ellipse_geometry.cc
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1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #include <algorithm>
6 
8 
10 
11 namespace impeller {
12 
13 EllipseGeometry::EllipseGeometry(Rect bounds) : bounds_(bounds) {}
14 
15 GeometryResult EllipseGeometry::GetPositionBuffer(
16  const ContentContext& renderer,
17  const Entity& entity,
18  RenderPass& pass) const {
20  renderer,
21  renderer.GetTessellator()->FilledEllipse(entity.GetTransform(), bounds_),
22  entity, pass);
23 }
24 
25 // |Geometry|
26 GeometryResult EllipseGeometry::GetPositionUVBuffer(
27  Rect texture_coverage,
28  Matrix effect_transform,
29  const ContentContext& renderer,
30  const Entity& entity,
31  RenderPass& pass) const {
33  renderer,
34  renderer.GetTessellator()->FilledEllipse(entity.GetTransform(), bounds_),
35  texture_coverage.GetNormalizingTransform() * effect_transform, entity,
36  pass);
37 }
38 
39 GeometryVertexType EllipseGeometry::GetVertexType() const {
41 }
42 
43 std::optional<Rect> EllipseGeometry::GetCoverage(
44  const Matrix& transform) const {
45  return bounds_.TransformBounds(transform);
46 }
47 
48 bool EllipseGeometry::CoversArea(const Matrix& transform,
49  const Rect& rect) const {
50  return false;
51 }
52 
54  return false;
55 }
56 
57 } // namespace impeller
impeller::EllipseGeometry::EllipseGeometry
EllipseGeometry(Rect bounds)
Definition: ellipse_geometry.cc:13
impeller::Entity::GetTransform
const Matrix & GetTransform() const
Get the global transform matrix for this Entity.
Definition: entity.cc:49
impeller::TRect::TransformBounds
constexpr TRect TransformBounds(const Matrix &transform) const
Creates a new bounding box that contains this transformed rectangle.
Definition: rect.h:405
impeller::GeometryVertexType
GeometryVertexType
Definition: geometry.h:49
impeller::Geometry::ComputePositionGeometry
static GeometryResult ComputePositionGeometry(const ContentContext &renderer, const Tessellator::VertexGenerator &generator, const Entity &entity, RenderPass &pass)
Definition: geometry.cc:25
impeller::Entity
Definition: entity.h:21
impeller::Geometry::ComputePositionUVGeometry
static GeometryResult ComputePositionUVGeometry(const ContentContext &renderer, const Tessellator::VertexGenerator &generator, const Matrix &uv_transform, const Entity &entity, RenderPass &pass)
Definition: geometry.cc:57
impeller::GeometryResult
Definition: geometry.h:20
ellipse_geometry.h
impeller::Rect
TRect< Scalar > Rect
Definition: rect.h:661
impeller::ContentContext::GetTessellator
std::shared_ptr< Tessellator > GetTessellator() const
Definition: content_context.cc:560
impeller::RenderPass
Render passes encode render commands directed as one specific render target into an underlying comman...
Definition: render_pass.h:33
line_geometry.h
impeller::EllipseGeometry::CoversArea
bool CoversArea(const Matrix &transform, const Rect &rect) const override
Determines if this geometry, transformed by the given transform, will completely cover all surface ar...
Definition: ellipse_geometry.cc:48
impeller::EllipseGeometry::IsAxisAlignedRect
bool IsAxisAlignedRect() const override
Definition: ellipse_geometry.cc:53
impeller
Definition: aiks_blur_unittests.cc:20
impeller::kPosition
@ kPosition
Definition: geometry.h:50
impeller::ContentContext
Definition: content_context.h:392
impeller::TRect< Scalar >
impeller::Matrix
A 4x4 matrix using column-major storage.
Definition: matrix.h:37