btStridingMeshInterface.h

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/*
Bullet Continuous Collision Detection and Physics Library
Copyright (c) 2003-2009 Erwin Coumans  http://bulletphysics.org

This software is provided 'as-is', without any express or implied warranty.
In no event will the authors be held liable for any damages arising from the use of this software.
Permission is granted to anyone to use this software for any purpose, 
including commercial applications, and to alter it and redistribute it freely, 
subject to the following restrictions:

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.
2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/

#ifndef BT_STRIDING_MESHINTERFACE_H
#define BT_STRIDING_MESHINTERFACE_H

#include "LinearMath/btVector3.h"
#include "btTriangleCallback.h"
#include "btConcaveShape.h"





class  btStridingMeshInterface
{
        protected:
        
                btVector3 m_scaling;

        public:
                btStridingMeshInterface() :m_scaling(btScalar(1.),btScalar(1.),btScalar(1.))
                {

                }

                virtual ~btStridingMeshInterface();



                virtual void    InternalProcessAllTriangles(btInternalTriangleIndexCallback* callback,const btVector3& aabbMin,const btVector3& aabbMax) const;

                void    calculateAabbBruteForce(btVector3& aabbMin,btVector3& aabbMax);

                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;
        
                virtual void    unLockVertexBase(int subpart)=0;

                virtual void    unLockReadOnlyVertexBase(int subpart) const=0;


                virtual int             getNumSubParts() const=0;

                virtual void    preallocateVertices(int numverts)=0;
                virtual void    preallocateIndices(int numindices)=0;

                virtual bool    hasPremadeAabb() const { return false; }
                virtual void    setPremadeAabb(const btVector3& aabbMin, const btVector3& aabbMax ) const
                {
                        (void) aabbMin;
                        (void) aabbMax;
                }
                virtual void    getPremadeAabb(btVector3* aabbMin, btVector3* aabbMax ) const
        {
            (void) aabbMin;
            (void) aabbMax;
        }

                const btVector3&        getScaling() const {
                        return m_scaling;
                }
                void    setScaling(const btVector3& scaling)
                {
                        m_scaling = scaling;
                }

                virtual int     calculateSerializeBufferSize() const;

                virtual const char*     serialize(void* dataBuffer, btSerializer* serializer) const;


};

struct  btIntIndexData
{
        int     m_value;
};

struct  btShortIntIndexData
{
        short m_value;
        char m_pad[2];
};

struct  btShortIntIndexTripletData
{
        short   m_values[3];
        char    m_pad[2];
};

struct  btCharIndexTripletData
{
        unsigned char m_values[3];
        char    m_pad;
};


struct  btMeshPartData
{
        btVector3FloatData                      *m_vertices3f;
        btVector3DoubleData                     *m_vertices3d;

        btIntIndexData                          *m_indices32;
        btShortIntIndexTripletData      *m_3indices16;
        btCharIndexTripletData          *m_3indices8;

        btShortIntIndexData                     *m_indices16;//backwards compatibility

        int                     m_numTriangles;//length of m_indices = m_numTriangles
        int                     m_numVertices;
};


struct  btStridingMeshInterfaceData
{
        btMeshPartData  *m_meshPartsPtr;
        btVector3FloatData      m_scaling;
        int     m_numMeshParts;
        char m_padding[4];
};




SIMD_FORCE_INLINE       int     btStridingMeshInterface::calculateSerializeBufferSize() const
{
        return sizeof(btStridingMeshInterfaceData);
}



#endif //BT_STRIDING_MESHINTERFACE_H