rect_geometry.h

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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.
 
#ifndef FLUTTER_IMPELLER_ENTITY_GEOMETRY_RECT_GEOMETRY_H_
#define FLUTTER_IMPELLER_ENTITY_GEOMETRY_RECT_GEOMETRY_H_
 
#include "impeller/entity/geometry/geometry.h"
#include "impeller/geometry/stroke_parameters.h"
 
namespace impeller {
 
class FillRectGeometry final : public Geometry {
 public:
  explicit FillRectGeometry(Rect rect);
 
  ~FillRectGeometry() override;
 
  // |Geometry|
  bool CoversArea(const Matrix& transform, const Rect& rect) const override;
 
  // |Geometry|
  bool IsAxisAlignedRect() const override;
 
  // |Geometry|
  GeometryResult GetPositionBuffer(const ContentContext& renderer,
                                   const Entity& entity,
                                   RenderPass& pass) const override;
 
  // |Geometry|
  std::optional<Rect> GetCoverage(const Matrix& transform) const override;
 
 private:
  Rect rect_;
};
 
class StrokeRectGeometry final : public Geometry {
 public:
  explicit StrokeRectGeometry(const Rect& rect, const StrokeParameters& stroke);
 
  ~StrokeRectGeometry() override;
 
  // |Geometry|
  GeometryResult GetPositionBuffer(const ContentContext& renderer,
                                   const Entity& entity,
                                   RenderPass& pass) const override;
 
  // |Geometry|
  std::optional<Rect> GetCoverage(const Matrix& transform) const override;
 
 private:
  const Rect rect_;
  const Scalar stroke_width_;
  const Join stroke_join_;
 
  static Join AdjustStrokeJoin(const StrokeParameters& stroke);
 
  static Point* AppendRoundCornerJoin(Point* buffer,
                                      Point corner,
                                      Vector2 offset,
                                      const Tessellator::Trigs& trigs);
};
 
}  // namespace impeller
 
#endif  // FLUTTER_IMPELLER_ENTITY_GEOMETRY_RECT_GEOMETRY_H_