GuConvexHelper.h

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#ifndef GU_CONVEXHELPER_H
#define GU_CONVEXHELPER_H
 
#include "GuShapeConvex.h"
 
namespace physx
{
    class PxConvexMeshGeometry;
namespace Gu
{
 
    void getScaledConvex(   PxVec3*& scaledVertices, PxU8*& scaledIndices, PxVec3* dstVertices, PxU8* dstIndices,
                            bool idtConvexScale, const PxVec3* srcVerts, const PxU8* srcIndices, PxU32 nbVerts, const Cm::FastVertex2ShapeScaling& convexScaling);
 
    // PT: calling this correctly isn't trivial so let's macroize it. At least we limit the damage since it immediately calls a real function.
    #define GET_SCALEX_CONVEX(scaledVertices, stackIndices, idtScaling, nbVerts, scaling, srcVerts, srcIndices) \
    getScaledConvex(scaledVertices, stackIndices,                                                               \
                    idtScaling ? NULL : reinterpret_cast<PxVec3*>(PxAlloca(nbVerts * sizeof(PxVec3))),          \
                    idtScaling ? NULL : reinterpret_cast<PxU8*>(PxAlloca(nbVerts * sizeof(PxU8))),              \
                    idtScaling, srcVerts, srcIndices, nbVerts, scaling);
 
    bool getConvexData(const PxConvexMeshGeometry& shapeConvex, Cm::FastVertex2ShapeScaling& scaling, PxBounds3& bounds, PolygonalData& polyData);
 
    struct ConvexEdge
    {
        PxU8    vref0;
        PxU8    vref1;
        PxVec3  normal; // warning: non-unit vector!
    };
 
    PxU32 findUniqueConvexEdges(PxU32 maxNbEdges, ConvexEdge* PX_RESTRICT edges, PxU32 numPolygons, const Gu::HullPolygonData* PX_RESTRICT polygons, const PxU8* PX_RESTRICT vertexData);
}
}
 
#endif