Index: include/core/SkLight.h |
diff --git a/include/core/SkLight.h b/include/core/SkLight.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..4a6e149c76afbc765541645f1d5809c765fd00e8 |
--- /dev/null |
+++ b/include/core/SkLight.h |
@@ -0,0 +1,56 @@ |
+ |
+/* |
+ * Copyright 2015 Google Inc. |
+ * |
+ * Use of this source code is governed by a BSD-style license that can be |
+ * found in the LICENSE file. |
+ */ |
+ |
+#ifndef SkLight_DEFINED |
+#define SkLight_DEFINED |
+ |
+#include "SkPoint3.h" |
+ |
+class SK_API SkLight { |
+public: |
+ enum LightType { |
+ kAmbient_LightType, // only 'fColor' is used |
+ kDirectional_LightType |
+ }; |
+ |
+ SkLight() : fType(kAmbient_LightType) { |
+ fColor.set(0.0f, 0.0f, 0.0f); |
+ fDirection.set(0.0f, 0.0f, 1.0f); |
+ } |
+ |
+ SkLight(const SkColor3f& color) |
+ : fType(kAmbient_LightType) |
+ , fColor(color) { |
+ fDirection.set(0.0f, 0.0f, 1.0f); |
+ } |
+ |
+ SkLight(const SkColor3f& color, const SkVector3& dir) |
+ : fType(kDirectional_LightType) |
+ , fColor(color) |
+ , fDirection(dir) { |
+ if (!fDirection.normalize()) { |
+ fDirection.set(0.0f, 0.0f, 1.0f); |
+ } |
+ } |
+ |
+ LightType type() const { return fType; } |
+ const SkColor3f& color() const { return fColor; } |
+ const SkVector3& dir() const { |
+ SkASSERT(kAmbient_LightType != fType); |
+ return fDirection; |
+ } |
+ |
+private: |
+ LightType fType; |
+ SkColor3f fColor; // linear (unpremul) color. Range is 0..1 in each channel. |
+ SkVector3 fDirection; // direction towards the light (+Z is out of the screen). |
+ // If degenerate, it will be replaced with (0, 0, 1). |
+}; |
+ |
+ |
+#endif |