| // 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_CIRCLE_GEOMETRY_H_ |
| #define FLUTTER_IMPELLER_ENTITY_GEOMETRY_CIRCLE_GEOMETRY_H_ |
| |
| #include "impeller/entity/geometry/geometry.h" |
| |
| namespace impeller { |
| |
| // Geometry class that can generate vertices (with or without texture |
| // coordinates) for either filled or stroked circles |
| class CircleGeometry final : public Geometry { |
| public: |
| explicit CircleGeometry(const Point& center, Scalar radius); |
| |
| explicit CircleGeometry(const Point& center, |
| Scalar radius, |
| Scalar stroke_width); |
| |
| ~CircleGeometry() = default; |
| |
| // |Geometry| |
| bool CoversArea(const Matrix& transform, const Rect& rect) const override; |
| |
| // |Geometry| |
| bool IsAxisAlignedRect() const override; |
| |
| private: |
| // |Geometry| |
| GeometryResult GetPositionBuffer(const ContentContext& renderer, |
| const Entity& entity, |
| RenderPass& pass) const override; |
| |
| // |Geometry| |
| GeometryVertexType GetVertexType() const override; |
| |
| // |Geometry| |
| std::optional<Rect> GetCoverage(const Matrix& transform) const override; |
| |
| // |Geometry| |
| GeometryResult GetPositionUVBuffer(Rect texture_coverage, |
| Matrix effect_transform, |
| const ContentContext& renderer, |
| const Entity& entity, |
| RenderPass& pass) const override; |
| |
| Point center_; |
| Scalar radius_; |
| Scalar stroke_width_; |
| |
| CircleGeometry(const CircleGeometry&) = delete; |
| |
| CircleGeometry& operator=(const CircleGeometry&) = delete; |
| }; |
| |
| } // namespace impeller |
| |
| #endif // FLUTTER_IMPELLER_ENTITY_GEOMETRY_CIRCLE_GEOMETRY_H_ |