mirror of https://github.com/axmolengine/axmol.git
134 lines
4.3 KiB
C++
134 lines
4.3 KiB
C++
/****************************************************************************
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Copyright (c) 2014 Chukong Technologies Inc.
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#ifndef __CCMESH_H__
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#define __CCMESH_H__
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#include <string>
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#include <vector>
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#include "base/CCRef.h"
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#include "base/ccTypes.h"
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#include "math/CCMath.h"
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#include "renderer/CCGLProgram.h"
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NS_CC_BEGIN
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//mesh vertex attribute
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struct MeshVertexAttrib
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{
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//attribute size
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GLint size;
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//GL_FLOAT
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GLenum type;
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//VERTEX_ATTRIB_POSITION,VERTEX_ATTRIB_COLOR,VERTEX_ATTRIB_TEX_COORD,VERTEX_ATTRIB_NORMAL, GLProgram for detail
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int vertexAttrib;
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//size in bytes
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int attribSizeBytes;
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};
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class RenderMeshData
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{
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friend class Mesh;
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public:
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RenderMeshData(): _vertexsizeBytes(0)
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{
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}
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bool hasVertexAttrib(int attrib);
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bool initFrom(const std::vector<float>& positions, const std::vector<float>& normals, const std::vector<float>& texs, const std::vector<unsigned short>& indices);
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protected:
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int _vertexsizeBytes;
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ssize_t _vertexNum;
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std::vector<float> _vertexs;
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std::vector<unsigned short> _indices;
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std::vector<MeshVertexAttrib> _vertexAttribs;
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};
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/** Mesh: TODO, add description of Mesh */
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class Mesh : public Ref
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{
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public:
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/** Defines supported index formats. */
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enum class IndexFormat
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{
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INDEX8 = GL_UNSIGNED_BYTE,
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INDEX16 = GL_UNSIGNED_SHORT,
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};
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/** Defines supported primitive types. */
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enum class PrimitiveType
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{
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TRIANGLES = GL_TRIANGLES,
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TRIANGLE_STRIP = GL_TRIANGLE_STRIP,
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LINES = GL_LINES,
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LINE_STRIP = GL_LINE_STRIP,
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POINTS = GL_POINTS
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};
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//create
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static Mesh* create(const std::vector<float>& positions, const std::vector<float>& normals, const std::vector<float>& texs, const std::vector<unsigned short>& indices);
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//get vertex buffer
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inline GLuint getVertexBuffer() const { return _vertexBuffer; }
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//get mesh vertex attribute count
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ssize_t getMeshVertexAttribCount() const { return _renderdata._vertexAttribs.size(); }
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//get MeshVertexAttribute by index
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const MeshVertexAttrib& getMeshVertexAttribute(int idx) const { return _renderdata._vertexAttribs[idx]; }
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//has vertex attribute?
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bool hasVertexAttrib(int attrib) { return _renderdata.hasVertexAttrib(attrib); }
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//get per vertex size in bytes
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int getVertexSizeInBytes() const { return _renderdata._vertexsizeBytes; }
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PrimitiveType getPrimitiveType() const { return _primitiveType; }
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ssize_t getIndexCount() const { return _indexCount; }
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IndexFormat getIndexFormat() const { return _indexFormat; }
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GLuint getIndexBuffer() const {return _indexBuffer; }
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//build vertex buffer from renderdata
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void restore();
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protected:
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Mesh();
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virtual ~Mesh();
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bool init(const std::vector<float>& positions, const std::vector<float>& normals, const std::vector<float>& texs, const std::vector<unsigned short>& indices);
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//build buffer
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void buildBuffer();
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void cleanAndFreeBuffers();
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PrimitiveType _primitiveType;
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IndexFormat _indexFormat;
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GLuint _vertexBuffer;
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GLuint _indexBuffer;
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ssize_t _indexCount;
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RenderMeshData _renderdata;
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};
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NS_CC_END
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#endif // __CCMESH_H_
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