SnippetSoftBody.h

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#ifndef PHYSX_SNIPPET_SOFTBODY_H
#define PHYSX_SNIPPET_SOFTBODY_H
 
#include "PxPhysicsAPI.h"
#include <vector>
 
class SoftBody
{
public:
    SoftBody(physx::PxSoftBody* softBody, physx::PxBuffer* positionInvMass) :
        mSoftBody(softBody),
        mPositionInvMass(positionInvMass)
    { }
 
    ~SoftBody()
    {
    }
 
    void release()
    {
        if (mSoftBody)
            mSoftBody->release();
        if (mPositionInvMass)
            mPositionInvMass->release();
    }
 
 
    void copyDeformedVerticesFromGPU()
    {   
        mSoftBody->readData(physx::PxSoftBodyData::ePOSITION_INVMASS, *mPositionInvMass);
 
        physx::PxTetrahedronMesh* mTetMesh = mSoftBody->getCollisionMesh();
        physx::PxVec4* positionsInvMass = static_cast<physx::PxVec4*>(mPositionInvMass->map());
        
        mPositionsInvMass.resize(mTetMesh->getNbVertices());
        memcpy(mPositionsInvMass.begin(), positionsInvMass, mTetMesh->getNbVertices() * sizeof(physx::PxVec4));
        
        mPositionInvMass->unmap();  
    }
 
    physx::PxArray<physx::PxVec4> mPositionsInvMass;
    physx::PxSoftBody* mSoftBody;
    physx::PxBuffer* mPositionInvMass;
};
 
#endif