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//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of NVIDIA CORPORATION nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2018 NVIDIA Corporation. All rights reserved.
#include "RTdef.h"
#if RT_COMPILE
#ifndef MESH_CLIPPER_BASE_H
#define MESH_CLIPPER_BASE_H
// Matthias Muller-Fischer
#include <PxVec3.h>
#include <PsArray.h>
#include <PxTransform.h>
#include <PxBounds3.h>
#include <PsUserAllocated.h>
//#include "Vec3.h"
//#include "Bounds3.h"
//#include "Transform.h"
namespace nvidia
{
namespace fracture
{
namespace base
{
//using namespace ::M;
class Convex;
class SimScene;
// ---------------------------------------------------------------------------------------
class MeshClipper : public UserAllocated {
friend class SimScene;
public:
// singleton pattern
//static MeshClipper* getInstance();
//static void destroyInstance();
void init(const Convex *meshConvex);
bool clip(const Convex *clipConvex, const PxTransform &pxTrans, float texScale, bool splitIslands,
bool &empty, bool &completelyInside);
struct Mesh {
void clear();
nvidia::Array<PxVec3> vertices;
nvidia::Array<PxVec3> normals;
nvidia::Array<PxVec3> tangents;
nvidia::Array<float> texCoords;
nvidia::Array<int> polyStarts;
nvidia::Array<int> polyIndices;
nvidia::Array<int> polyNeighbors;
};
int getNumMeshes();
const Mesh &getMesh(int meshNr);
bool loadDump();
protected:
MeshClipper(SimScene* scene);
virtual ~MeshClipper() {}
//static PxVec3 conv(const Vec3 &v);
//static Vec3 conv(const PxVec3 &v);
//static Transform conv(const PxTransform &t);
//static Plane conv(const PxPlane &p);
void createGrid();
bool getGridCandidates(const PxBounds3 &bounds);
void generateCandidates(const PxTransform &pxTrans);
bool createInternalPolygons(const PxTransform &pxTrans);
bool createFacePolys();
bool testNeighbors(int meshNr);
bool splitIslands();
bool insideVisualMesh(const PxVec3 &pos) const;
void computeClipFaceNeighbors();
SimScene* mScene;
// input
const Convex *mMeshConvex;
const Convex *mClipConvex;
nvidia::Array<int> mClipFaceNeighbors;
float mTexScale;
// output
nvidia::Array<Mesh> mOutMeshes;
// auxiliaries
struct PolyVert {
void init() {
pos = normal = tangent = PxVec3(0.0, 0.0, 0.0); u = 0.0f; v = 0.0f;
id = -1; edgeNeighbor = -1; edgeOnFace = false; nextVert = -1;
}
PxVec3 pos;
PxVec3 normal;
PxVec3 tangent;
double u, v;
int id;
int edgeNeighbor;
bool edgeOnFace;
int nextVert;
};
struct FaceVert {
void init() {
id = -1; prevFaceNr = -1; nextFaceNr = -1; neighborPolyNr = -1; neighborPos = -1;
nextVert = -1; visited = false;
}
int id;
int prevFaceNr, nextFaceNr;
int neighborPolyNr;
int neighborPos;
int nextVert;
bool visited;
};
nvidia::Array<PxVec3> mMeshVertices;
nvidia::Array<bool> mPolyInside;
nvidia::Array<int> mPolyCandidates;
nvidia::Array<PolyVert> mClipPolyVerts[2];
nvidia::Array<int> mClipPolyStarts[2];
nvidia::Array<PolyVert> mCuts;
nvidia::Array<int> mFaceVertNrs;
nvidia::Array<FaceVert> mFaceVerts;
nvidia::Array<PxBounds3> mPolyBounds;
struct Edge {
void init(int i0, int i1, int edgeNr, int faceNr) {
if (i0 < i1) { this->i0 = i0; this->i1 = i1; }
else { this->i0 = i1; this->i1 = i0; }
this->edgeNr = edgeNr; this->faceNr = faceNr;
}
bool operator == (const Edge &e) const { return i0 == e.i0 && i1 == e.i1; }
bool operator < (const Edge &e) const { return i0 < e.i0 || (i0 == e.i0 && i1 < e.i1); }
int i0, i1;
int edgeNr, faceNr;
};
nvidia::Array<Edge> mEdges;
// map from int to out mesh
nvidia::Array<int> mFirstOutPoly;
nvidia::Array<int> mNumOutPolys;
nvidia::Array<int> mOutVertNr;
nvidia::Array<int> mFirstOutFacePoly;
nvidia::Array<int> mNumOutFacePolys;
nvidia::Array<int> mFaceTypes;
nvidia::Array<int> mFaceOfPoly;
nvidia::Array<int> mFaceQueue;
// split islands
nvidia::Array<int> mColors;
nvidia::Array<int> mQueue;
nvidia::Array<int> mNewVertNr;
nvidia::Array<int> mNewPolyNr;
// grid
nvidia::Array<int> mGridFirstPoly;
nvidia::Array<int> mGridPolys;
int mGridNumX, mGridNumY, mGridNumZ;
float mGridSpacing;
PxBounds3 mGridBounds;
nvidia::Array<int> mGridPolyMarks;
int mGridCurrentMark;
// error handling
bool check(bool test, const char *message);
bool mDumpOnError;
};
}
}
}
#endif
#endif
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