166 lines
3.7 KiB
C++
166 lines
3.7 KiB
C++
/*
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Bullet Continuous Collision Detection and Physics Library
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Copyright (c) 2003-2006 Erwin Coumans http://continuousphysics.com/Bullet/
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This software is provided 'as-is', without any express or implied warranty.
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In no event will the authors be held liable for any damages arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it freely,
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subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#ifndef BT_SOFT_BODY_SOLVER_VERTEX_BUFFER_H
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#define BT_SOFT_BODY_SOLVER_VERTEX_BUFFER_H
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class btVertexBufferDescriptor
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{
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public:
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enum BufferTypes
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{
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CPU_BUFFER,
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DX11_BUFFER,
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OPENGL_BUFFER
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};
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protected:
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bool m_hasVertexPositions;
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bool m_hasNormals;
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int m_vertexOffset;
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int m_vertexStride;
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int m_normalOffset;
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int m_normalStride;
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public:
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btVertexBufferDescriptor()
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{
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m_hasVertexPositions = false;
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m_hasNormals = false;
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m_vertexOffset = 0;
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m_vertexStride = 0;
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m_normalOffset = 0;
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m_normalStride = 0;
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}
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virtual ~btVertexBufferDescriptor()
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{
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}
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virtual bool hasVertexPositions() const
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{
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return m_hasVertexPositions;
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}
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virtual bool hasNormals() const
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{
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return m_hasNormals;
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}
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/**
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* Return the type of the vertex buffer descriptor.
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*/
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virtual BufferTypes getBufferType() const = 0;
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/**
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* Return the vertex offset in floats from the base pointer.
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*/
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virtual int getVertexOffset() const
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{
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return m_vertexOffset;
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}
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/**
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* Return the vertex stride in number of floats between vertices.
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*/
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virtual int getVertexStride() const
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{
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return m_vertexStride;
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}
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/**
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* Return the vertex offset in floats from the base pointer.
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*/
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virtual int getNormalOffset() const
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{
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return m_normalOffset;
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}
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/**
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* Return the vertex stride in number of floats between vertices.
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*/
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virtual int getNormalStride() const
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{
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return m_normalStride;
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}
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};
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class btCPUVertexBufferDescriptor : public btVertexBufferDescriptor
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{
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protected:
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float *m_basePointer;
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public:
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/**
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* vertexBasePointer is pointer to beginning of the buffer.
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* vertexOffset is the offset in floats to the first vertex.
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* vertexStride is the stride in floats between vertices.
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*/
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btCPUVertexBufferDescriptor( float *basePointer, int vertexOffset, int vertexStride )
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{
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m_basePointer = basePointer;
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m_vertexOffset = vertexOffset;
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m_vertexStride = vertexStride;
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m_hasVertexPositions = true;
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}
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/**
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* vertexBasePointer is pointer to beginning of the buffer.
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* vertexOffset is the offset in floats to the first vertex.
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* vertexStride is the stride in floats between vertices.
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*/
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btCPUVertexBufferDescriptor( float *basePointer, int vertexOffset, int vertexStride, int normalOffset, int normalStride )
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{
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m_basePointer = basePointer;
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m_vertexOffset = vertexOffset;
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m_vertexStride = vertexStride;
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m_hasVertexPositions = true;
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m_normalOffset = normalOffset;
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m_normalStride = normalStride;
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m_hasNormals = true;
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}
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virtual ~btCPUVertexBufferDescriptor()
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{
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}
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/**
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* Return the type of the vertex buffer descriptor.
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*/
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virtual BufferTypes getBufferType() const
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{
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return CPU_BUFFER;
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}
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/**
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* Return the base pointer in memory to the first vertex.
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*/
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virtual float *getBasePointer() const
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{
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return m_basePointer;
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}
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};
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#endif // #ifndef BT_SOFT_BODY_SOLVER_VERTEX_BUFFER_H
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