ExtInsideTester.h

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#ifndef EXT_INSIDE_TESTER_H
#define EXT_INSIDE_TESTER_H
 
// MM: tester whether a point is inside a triangle mesh
// all faces are projected onto the 3 canonical planes and hashed
// for fast ray mesh intersections
 
#include "foundation/PxVec3.h"
#include "foundation/PxArray.h"
#include "foundation/PxQuat.h"
#include "CmRandom.h"
 
namespace physx
{
    namespace Ext
    {
 
        // ----------------------------------------------------------
        class InsideTester 
        {
        public:
            void init(const PxVec3 *vertices, PxI32 numVertices, const PxI32 *triIndices, PxI32 numTris);
            bool isInside(const PxVec3& pos);
 
        private:
            PxArray<PxVec3> mVertices;
            PxArray<PxI32> mIndices;
 
            struct Grid2d
            {
                void init(PxI32 dim0, const PxArray<PxVec3> &vertices, const PxArray<PxI32> &indices);
                PxI32 numInside(const PxVec3&pos, const PxArray<PxVec3> &vertices, const PxArray<PxI32> &indices);
                PxI32 dim0;
                PxVec3 orig;
                PxI32 num1, num2;
                float spacing;
                PxArray<PxI32> first;
                PxArray<PxI32> tris;
                PxArray<int> next;
 
                Cm::RandomR250 rnd = Cm::RandomR250(0);
            };
            Grid2d mGrids[3];
        };
    }
}
 
#endif