ellipse_geometry.cc

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#include <algorithm>
 
#include "flutter/impeller/entity/geometry/ellipse_geometry.h"
 
#include "flutter/impeller/entity/geometry/line_geometry.h"
 
namespace impeller {
 
EllipseGeometry::EllipseGeometry(Rect bounds) : bounds_(bounds) {}
 
GeometryResult EllipseGeometry::GetPositionBuffer(
    const ContentContext& renderer,
    const Entity& entity,
    RenderPass& pass) const {
  return ComputePositionGeometry(
      renderer.GetTessellator()->FilledEllipse(entity.GetTransform(), bounds_),
      entity, pass);
}
 
// |Geometry|
GeometryResult EllipseGeometry::GetPositionUVBuffer(
    Rect texture_coverage,
    Matrix effect_transform,
    const ContentContext& renderer,
    const Entity& entity,
    RenderPass& pass) const {
  return ComputePositionUVGeometry(
      renderer.GetTessellator()->FilledEllipse(entity.GetTransform(), bounds_),
      texture_coverage.GetNormalizingTransform() * effect_transform, entity,
      pass);
}
 
GeometryVertexType EllipseGeometry::GetVertexType() const {
  return GeometryVertexType::kPosition;
}
 
std::optional<Rect> EllipseGeometry::GetCoverage(
    const Matrix& transform) const {
  return bounds_.TransformBounds(transform);
}
 
bool EllipseGeometry::CoversArea(const Matrix& transform,
                                 const Rect& rect) const {
  return false;
}
 
bool EllipseGeometry::IsAxisAlignedRect() const {
  return false;
}
 
}  // namespace impeller