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+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SF_RENDER_ENGINE_MESH_H
+#define SF_RENDER_ENGINE_MESH_H
+
+#include <stdint.h>
+
+namespace android {
+
+class Mesh {
+public:
+ enum Primitive {
+ TRIANGLES = 0x0004, // GL_TRIANGLES
+ TRIANGLE_STRIP = 0x0005, // GL_TRIANGLE_STRIP
+ TRIANGLE_FAN = 0x0006 // GL_TRIANGLE_FAN
+ };
+
+ Mesh(Primitive primitive, size_t vertexCount, size_t vertexSize, size_t texCoordsSize = 0);
+ ~Mesh();
+
+ /*
+ * VertexArray handles the stride automatically.
+ */
+ template <typename TYPE>
+ class VertexArray {
+ friend class Mesh;
+ float* mData;
+ size_t mStride;
+ VertexArray(float* data, size_t stride) : mData(data), mStride(stride) { }
+ public:
+ TYPE& operator[](size_t index) {
+ return *reinterpret_cast<TYPE*>(&mData[index*mStride]);
+ }
+ TYPE const& operator[](size_t index) const {
+ return *reinterpret_cast<TYPE const*>(&mData[index*mStride]);
+ }
+ };
+
+ template <typename TYPE>
+ VertexArray<TYPE> getPositionArray() { return VertexArray<TYPE>(getPositions(), mStride); }
+
+ template <typename TYPE>
+ VertexArray<TYPE> getTexCoordArray() { return VertexArray<TYPE>(getTexCoords(), mStride); }
+
+ Primitive getPrimitive() const;
+
+ // returns a pointer to the vertices positions
+ float const* getPositions() const;
+
+ // returns a pointer to the vertices texture coordinates
+ float const* getTexCoords() const;
+
+ // number of vertices in this mesh
+ size_t getVertexCount() const;
+
+ // dimension of vertices
+ size_t getVertexSize() const;
+
+ // dimension of texture coordinates
+ size_t getTexCoordsSize() const;
+
+ // return stride in bytes
+ size_t getByteStride() const;
+
+ // return stride in floats
+ size_t getStride() const;
+
+private:
+ Mesh(const Mesh&);
+ Mesh& operator = (const Mesh&);
+ Mesh const& operator = (const Mesh&) const;
+
+ float* getPositions();
+ float* getTexCoords();
+ float* mVertices;
+ size_t mVertexCount;
+ size_t mVertexSize;
+ size_t mTexCoordsSize;
+ size_t mStride;
+ Primitive mPrimitive;
+};
+
+
+} /* namespace android */
+#endif /* SF_RENDER_ENGINE_MESH_H */