| /* |
| * Copyright 2017 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkShadowTessellator_DEFINED |
| #define SkShadowTessellator_DEFINED |
| |
| #include "include/core/SkColor.h" |
| #include "include/core/SkPoint.h" |
| #include "include/core/SkRefCnt.h" |
| #include <functional> // std::function |
| |
| class SkMatrix; |
| class SkPath; |
| struct SkPoint3; |
| class SkVertices; |
| |
| namespace SkShadowTessellator { |
| |
| typedef std::function<SkScalar(SkScalar, SkScalar)> HeightFunc; |
| |
| /** |
| * This function generates an ambient shadow mesh for a path by walking the path, outsetting by |
| * the radius, and setting inner and outer colors to umbraColor and penumbraColor, respectively. |
| * If transparent is true, then the center of the ambient shadow will be filled in. |
| */ |
| sk_sp<SkVertices> MakeAmbient(const SkPath& path, const SkMatrix& ctm, |
| const SkPoint3& zPlane, bool transparent); |
| |
| /** |
| * This function generates a spot shadow mesh for a path by walking the transformed path, |
| * further transforming by the scale and translation, and outsetting and insetting by a radius. |
| * The center will be clipped against the original path unless transparent is true. |
| */ |
| sk_sp<SkVertices> MakeSpot(const SkPath& path, const SkMatrix& ctm, const SkPoint3& zPlane, |
| const SkPoint3& lightPos, SkScalar lightRadius, bool transparent); |
| |
| |
| } |
| |
| #endif |