1 /* 2 * Copyright 2017 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SkAmbientShadowMaskFilter_DEFINED 9 #define SkAmbientShadowMaskFilter_DEFINED 10 11 #include "SkMaskFilter.h" 12 #include "SkShadowFlags.h" 13 14 /* 15 * This filter implements a shadow representing ambient occlusion for an occluding object. 16 */ 17 class SK_API SkAmbientShadowMaskFilter { 18 public: 19 /** Create a shadow maskfilter. 20 * @param occluderHeight Height of occluding object off of ground plane. 21 * @param ambientAlpha Base opacity of the ambient occlusion shadow. 22 * @param flags Flags to use - defaults to none 23 * @return The new shadow maskfilter 24 */ 25 static sk_sp<SkMaskFilter> Make(SkScalar occluderHeight, SkScalar ambientAlpha, 26 uint32_t flags = SkShadowFlags::kNone_ShadowFlag); 27 28 SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP() 29 30 private: 31 SkAmbientShadowMaskFilter(); // can't be instantiated 32 }; 33 #endif 34