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/*
* Copyright (c) 2005 Erwin Coumans http://continuousphysics.com/Bullet/
*
* Permission to use, copy, modify, distribute and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appear in all copies.
* Erwin Coumans makes no representations about the suitability
* of this software for any purpose.
* It is provided "as is" without express or implied warranty.
*/
#ifndef STRIDING_MESHINTERFACE_H
#define STRIDING_MESHINTERFACE_H
#include "SimdVector3.h"
#include "TriangleCallback.h"
/// PHY_ScalarType enumerates possible scalar types.
/// See the StridingMeshInterface for its use
typedef enum PHY_ScalarType {
PHY_FLOAT,
PHY_DOUBLE,
PHY_INTEGER,
PHY_SHORT,
PHY_FIXEDPOINT88
} PHY_ScalarType;
/// StridingMeshInterface is the interface class for high performance access to triangle meshes
/// It allows for sharing graphics and collision meshes. Also it provides locking/unlocking of graphics meshes that are in gpu memory.
class StridingMeshInterface
{
protected:
SimdVector3 m_scaling;
public:
StridingMeshInterface() :m_scaling(1.f,1.f,1.f)
{
}
virtual ~StridingMeshInterface();
void InternalProcessAllTriangles(InternalTriangleIndexCallback* callback,const SimdVector3& aabbMin,const SimdVector3& aabbMax) const;
/// get read and write access to a subpart of a triangle mesh
/// this subpart has a continuous array of vertices and indices
/// in this way the mesh can be handled as chunks of memory with striding
/// very similar to OpenGL vertexarray support
/// make a call to unLockVertexBase when the read and write access is finished
virtual void getLockedVertexIndexBase(unsigned char **vertexbase, int& numverts,PHY_ScalarType& type, int& stride,unsigned char **indexbase,int & indexstride,int& numfaces,PHY_ScalarType& indicestype,int subpart=0)=0;
virtual void getLockedReadOnlyVertexIndexBase(const unsigned char **vertexbase, int& numverts,PHY_ScalarType& type, int& stride,const unsigned char **indexbase,int & indexstride,int& numfaces,PHY_ScalarType& indicestype,int subpart=0) const=0;
/// unLockVertexBase finishes the access to a subpart of the triangle mesh
/// make a call to unLockVertexBase when the read and write access (using getLockedVertexIndexBase) is finished
virtual void unLockVertexBase(int subpart)=0;
virtual void unLockReadOnlyVertexBase(int subpart) const=0;
/// getNumSubParts returns the number of seperate subparts
/// each subpart has a continuous array of vertices and indices
virtual int getNumSubParts() const=0;
virtual void preallocateVertices(int numverts)=0;
virtual void preallocateIndices(int numindices)=0;
const SimdVector3& getScaling() const {
return m_scaling;
}
void setScaling(const SimdVector3& scaling)
{
m_scaling = scaling;
}
};
#endif //STRIDING_MESHINTERFACE_H
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