| /* |
| * Copyright 2012 The Android Open Source Project |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| #ifndef SkLightingImageFilter_DEFINED |
| #define SkLightingImageFilter_DEFINED |
| |
| #include "SkImageFilter.h" |
| #include "SkColor.h" |
| |
| class SK_API SkPoint3 { |
| public: |
| SkPoint3() {} |
| SkPoint3(SkScalar x, SkScalar y, SkScalar z) |
| : fX(x), fY(y), fZ(z) {} |
| SkScalar dot(const SkPoint3& other) const { |
| return SkScalarMul(fX, other.fX) |
| + SkScalarMul(fY, other.fY) |
| + SkScalarMul(fZ, other.fZ); |
| } |
| SkScalar maxComponent() const { |
| return fX > fY ? (fX > fZ ? fX : fZ) : (fY > fZ ? fY : fZ); |
| } |
| void normalize() { |
| SkScalar scale = SkScalarInvert(SkScalarSqrt(dot(*this))); |
| fX = SkScalarMul(fX, scale); |
| fY = SkScalarMul(fY, scale); |
| fZ = SkScalarMul(fZ, scale); |
| } |
| SkPoint3 operator*(SkScalar scalar) const { |
| return SkPoint3(SkScalarMul(fX, scalar), |
| SkScalarMul(fY, scalar), |
| SkScalarMul(fZ, scalar)); |
| } |
| SkPoint3 operator-(const SkPoint3& other) const { |
| return SkPoint3(fX - other.fX, fY - other.fY, fZ - other.fZ); |
| } |
| bool operator==(const SkPoint3& other) const { |
| return fX == other.fX && fY == other.fY && fZ == other.fZ; |
| } |
| SkScalar fX, fY, fZ; |
| }; |
| |
| class SkLight; |
| |
| class SK_API SkLightingImageFilter : public SkImageFilter { |
| public: |
| static SkImageFilter* CreateDistantLitDiffuse(const SkPoint3& direction, |
| SkColor lightColor, SkScalar surfaceScale, SkScalar kd, |
| SkImageFilter* input = NULL, const SkIRect* cropRect = NULL); |
| static SkImageFilter* CreatePointLitDiffuse(const SkPoint3& location, |
| SkColor lightColor, SkScalar surfaceScale, SkScalar kd, |
| SkImageFilter* input = NULL, const SkIRect* cropRect = NULL); |
| static SkImageFilter* CreateSpotLitDiffuse(const SkPoint3& location, |
| const SkPoint3& target, SkScalar specularExponent, SkScalar cutoffAngle, |
| SkColor lightColor, SkScalar surfaceScale, SkScalar kd, |
| SkImageFilter* input = NULL, const SkIRect* cropRect = NULL); |
| static SkImageFilter* CreateDistantLitSpecular(const SkPoint3& direction, |
| SkColor lightColor, SkScalar surfaceScale, SkScalar ks, |
| SkScalar shininess, SkImageFilter* input = NULL, const SkIRect* cropRect = NULL); |
| static SkImageFilter* CreatePointLitSpecular(const SkPoint3& location, |
| SkColor lightColor, SkScalar surfaceScale, SkScalar ks, |
| SkScalar shininess, SkImageFilter* input = NULL, const SkIRect* cropRect = NULL); |
| static SkImageFilter* CreateSpotLitSpecular(const SkPoint3& location, |
| const SkPoint3& target, SkScalar specularExponent, SkScalar cutoffAngle, |
| SkColor lightColor, SkScalar surfaceScale, SkScalar ks, |
| SkScalar shininess, SkImageFilter* input = NULL, const SkIRect* cropRect = NULL); |
| ~SkLightingImageFilter(); |
| |
| SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP() |
| |
| protected: |
| SkLightingImageFilter(SkLight* light, |
| SkScalar surfaceScale, |
| SkImageFilter* input, |
| const SkIRect* cropRect = NULL); |
| explicit SkLightingImageFilter(SkFlattenableReadBuffer& buffer); |
| virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE; |
| const SkLight* light() const { return fLight; } |
| SkScalar surfaceScale() const { return fSurfaceScale; } |
| |
| private: |
| typedef SkImageFilter INHERITED; |
| SkLight* fLight; |
| SkScalar fSurfaceScale; |
| }; |
| |
| #endif |