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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) 2008-2018 NVIDIA Corporation. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
#ifndef PX_COLLISION_CONVEXMESHBUILDER
#define PX_COLLISION_CONVEXMESHBUILDER
#include "GuConvexMeshData.h"
#include "PxCooking.h"
#include "ConvexPolygonsBuilder.h"
namespace physx
{
//////////////////////////////////////////////////////////////////////////
// Convex mesh builder, creates the convex mesh from given polygons and creates internal data
class ConvexMeshBuilder
{
public:
ConvexMeshBuilder(const bool buildGRBData);
~ConvexMeshBuilder();
// loads the computed or given convex hull from descriptor.
// the descriptor does contain polygons directly, triangles are not allowed
bool build(const PxConvexMeshDesc&, PxU32 gaussMapVertexLimit, bool validateOnly = false, ConvexHullLib* hullLib = NULL);
// save the convex mesh into stream
bool save(PxOutputStream& stream, bool platformMismatch) const;
// copy the convex mesh into internal convex mesh, which can be directly used then
bool copy(Gu::ConvexHullData& convexData, PxU32& nb);
// loads the convex mesh from given polygons
bool loadConvexHull(const PxConvexMeshDesc&, ConvexHullLib* hullLib);
// computed hull polygons from given triangles
bool computeHullPolygons(const PxU32& nbVerts,const PxVec3* verts, const PxU32& nbTriangles, const PxU32* triangles, PxAllocatorCallback& inAllocator,
PxU32& outNbVerts, PxVec3*& outVertices, PxU32& nbIndices, PxU32*& indices, PxU32& nbPolygons, PxHullPolygon*& polygons);
// compute big convex data
bool computeGaussMaps();
// compute mass, inertia tensor
void computeMassInfo(bool lowerPrecision);
// TEST_INTERNAL_OBJECTS
// internal objects
void computeInternalObjects();
//~TEST_INTERNAL_OBJECTS
// return computed mass
PxReal getMass() const { return mMass; }
// return computed inertia tensor
const PxMat33& getInertia() const { return mInertia; }
// return big convex data
BigConvexData* getBigConvexData() const { return mBigConvexData; }
// set big convex data
void setBigConvexData(BigConvexData* data) { mBigConvexData = data; }
mutable ConvexPolygonsBuilder hullBuilder;
protected:
Gu::ConvexHullData mHullData;
BigConvexData* mBigConvexData; //!< optional, only for large meshes! PT: redundant with ptr in chull data? Could also be end of other buffer
PxReal mMass; //this is mass assuming a unit density that can be scaled by instances!
PxMat33 mInertia; //in local space of mesh!
};
}
#endif
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