130 lines
5.1 KiB
C++
130 lines
5.1 KiB
C++
// 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) 2008-2025 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 PHYSX_MESHGENERATOR_H
|
|
#define PHYSX_MESHGENERATOR_H
|
|
|
|
#include "PxPhysicsAPI.h"
|
|
#include "extensions/PxRemeshingExt.h"
|
|
|
|
namespace meshgenerator
|
|
{
|
|
using namespace physx;
|
|
|
|
void createCube(PxArray<PxVec3>& triVerts, PxArray<PxU32>& triIndices, const PxVec3& pos, PxReal scaling)
|
|
{
|
|
triVerts.clear();
|
|
triIndices.clear();
|
|
triVerts.pushBack(scaling * PxVec3(0.5f, -0.5f, -0.5f) + pos);
|
|
triVerts.pushBack(scaling * PxVec3(0.5f, -0.5f, 0.5f) + pos);
|
|
triVerts.pushBack(scaling * PxVec3(-0.5f, -0.5f, 0.5f) + pos);
|
|
triVerts.pushBack(scaling * PxVec3(-0.5f, -0.5f, -0.5f) + pos);
|
|
triVerts.pushBack(scaling * PxVec3(0.5f, 0.5f, -0.5f) + pos);
|
|
triVerts.pushBack(scaling * PxVec3(0.5f, 0.5f, 0.5f) + pos);
|
|
triVerts.pushBack(scaling * PxVec3(-0.5f, 0.5f, 0.5f) + pos);
|
|
triVerts.pushBack(scaling * PxVec3(-0.5f, 0.5f, -0.5f) + pos);
|
|
|
|
triIndices.pushBack(1); triIndices.pushBack(2); triIndices.pushBack(3);
|
|
triIndices.pushBack(7); triIndices.pushBack(6); triIndices.pushBack(5);
|
|
triIndices.pushBack(4); triIndices.pushBack(5); triIndices.pushBack(1);
|
|
triIndices.pushBack(5); triIndices.pushBack(6); triIndices.pushBack(2);
|
|
|
|
triIndices.pushBack(2); triIndices.pushBack(6); triIndices.pushBack(7);
|
|
triIndices.pushBack(0); triIndices.pushBack(3); triIndices.pushBack(7);
|
|
triIndices.pushBack(0); triIndices.pushBack(1); triIndices.pushBack(3);
|
|
triIndices.pushBack(4); triIndices.pushBack(7); triIndices.pushBack(5);
|
|
|
|
triIndices.pushBack(0); triIndices.pushBack(4); triIndices.pushBack(1);
|
|
triIndices.pushBack(1); triIndices.pushBack(5); triIndices.pushBack(2);
|
|
triIndices.pushBack(3); triIndices.pushBack(2); triIndices.pushBack(7);
|
|
triIndices.pushBack(4); triIndices.pushBack(0); triIndices.pushBack(7);
|
|
}
|
|
|
|
void createConeY(PxArray<PxVec3>& triVerts, PxArray<PxU32>& triIndices, const PxVec3& center, PxReal radius, PxReal height, PxU32 numPointsOnRing = 32)
|
|
{
|
|
triVerts.clear();
|
|
triIndices.clear();
|
|
for (PxU32 i = 0; i < numPointsOnRing; ++i)
|
|
{
|
|
PxReal angle = i * 2.0f * 3.1415926535898f / numPointsOnRing;
|
|
triVerts.pushBack(center + radius * PxVec3(PxSin(angle), 0, PxCos(angle)));
|
|
}
|
|
|
|
triVerts.pushBack(center);
|
|
triVerts.pushBack(center + PxVec3(0, height, 0));
|
|
for (PxU32 i = 0; i < numPointsOnRing; ++i)
|
|
{
|
|
triIndices.pushBack(numPointsOnRing); triIndices.pushBack(i); triIndices.pushBack((i + 1) % numPointsOnRing);
|
|
triIndices.pushBack(numPointsOnRing + 1); triIndices.pushBack((i + 1) % numPointsOnRing); triIndices.pushBack(i);
|
|
}
|
|
}
|
|
|
|
void projectPointsOntoSphere(PxArray<PxVec3>& triVerts, const PxVec3& center, PxReal radius)
|
|
{
|
|
for (PxU32 i = 0; i < triVerts.size(); ++i)
|
|
{
|
|
PxVec3 dir = triVerts[i] - center;
|
|
dir.normalize();
|
|
triVerts[i] = center + radius * dir;
|
|
}
|
|
}
|
|
|
|
void projectPointsOntoBowl(PxArray<PxVec3>& triVerts, const PxVec3& center, PxReal radius)
|
|
{
|
|
for (PxU32 i = 0; i < triVerts.size(); ++i)
|
|
{
|
|
PxVec3 dir = triVerts[i] - center;
|
|
dir.normalize();
|
|
|
|
if (dir.y > 0.01f)
|
|
{
|
|
dir.x *= 0.9f;
|
|
dir.z *= 0.9f;
|
|
dir.y = -dir.y;
|
|
}
|
|
|
|
triVerts[i] = center + radius * dir;
|
|
}
|
|
}
|
|
|
|
void createBowl(PxArray<PxVec3>& triVerts, PxArray<PxU32>& triIndices, const PxVec3& center, PxReal radius, const PxReal maxEdgeLength)
|
|
{
|
|
triVerts.clear();
|
|
triIndices.clear();
|
|
createCube(triVerts, triIndices, center, radius);
|
|
projectPointsOntoSphere(triVerts, center, radius);
|
|
|
|
while (PxRemeshingExt::limitMaxEdgeLength(triIndices, triVerts, maxEdgeLength, 1))
|
|
projectPointsOntoSphere(triVerts, center, radius);
|
|
|
|
projectPointsOntoBowl(triVerts, center, radius);
|
|
}
|
|
}
|
|
|
|
#endif
|