Add the original path renderer files and some support files from Android.
Renamed PathRenderer.{cpp,h} to AndroidPathRenderer.{cpp,h} to avoid name
collisions.
http://codereview.appspot.com/6938050/
git-svn-id: http://skia.googlecode.com/svn/trunk@6789 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/experimental/AndroidPathRenderer/AndroidPathRenderer.h b/experimental/AndroidPathRenderer/AndroidPathRenderer.h
new file mode 100644
index 0000000..a17ce9b
--- /dev/null
+++ b/experimental/AndroidPathRenderer/AndroidPathRenderer.h
@@ -0,0 +1,95 @@
+/*
+ * 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 ANDROID_HWUI_PATH_RENDERER_H
+#define ANDROID_HWUI_PATH_RENDERER_H
+
+#include <utils/Vector.h>
+
+#include "Vertex.h"
+
+namespace android {
+namespace uirenderer {
+
+class Matrix4;
+typedef Matrix4 mat4;
+
+class VertexBuffer {
+public:
+ VertexBuffer():
+ mBuffer(0),
+ mSize(0),
+ mCleanupMethod(0)
+ {}
+
+ ~VertexBuffer() {
+ if (mCleanupMethod)
+ mCleanupMethod(mBuffer);
+ }
+
+ template <class TYPE>
+ TYPE* alloc(int size) {
+ mSize = size;
+ mBuffer = (void*)new TYPE[size];
+ mCleanupMethod = &(cleanup<TYPE>);
+
+ return (TYPE*)mBuffer;
+ }
+
+ void* getBuffer() { return mBuffer; }
+ unsigned int getSize() { return mSize; }
+
+private:
+ template <class TYPE>
+ static void cleanup(void* buffer) {
+ delete[] (TYPE*)buffer;
+ }
+
+ void* mBuffer;
+ unsigned int mSize;
+ void (*mCleanupMethod)(void*);
+};
+
+class PathRenderer {
+public:
+ static SkRect computePathBounds(const SkPath& path, const SkPaint* paint);
+
+ static void convexPathVertices(const SkPath& path, const SkPaint* paint,
+ const mat4 *transform, VertexBuffer& vertexBuffer);
+
+private:
+ static bool convexPathPerimeterVertices(const SkPath &path, bool forceClose,
+ float sqrInvScaleX, float sqrInvScaleY, Vector<Vertex> &outputVertices);
+
+/*
+ endpoints a & b,
+ control c
+ */
+ static void recursiveQuadraticBezierVertices(
+ float ax, float ay,
+ float bx, float by,
+ float cx, float cy,
+ float sqrInvScaleX, float sqrInvScaleY,
+ Vector<Vertex> &outputVertices);
+
+/*
+ endpoints p1, p2
+ control c1, c2
+ */
+ static void recursiveCubicBezierVertices(
+ float p1x, float p1y,
+ float c1x, float c1y,
+ float p2x, float p2y,
+ float c2x, float c2y,
+ float sqrInvScaleX, float sqrInvScaleY,
+ Vector<Vertex> &outputVertices);
+};
+
+}; // namespace uirenderer
+}; // namespace android
+
+#endif // ANDROID_HWUI_PATH_RENDERER_H