Function NvFlexExtCreateClothFromMesh

extensions/flexExtCloth.cpp:84–189

}

NvFlexExtAsset* NvFlexExtCreateClothFromMesh(const float* particles, int numVertices, const int* indices, int numTriangles, float stretchStiffness, float bendStiffness, float tetherStiffness, float tetherGive, float pressure)
{
	NvFlexExtAsset* asset = new NvFlexExtAsset();
	memset(asset, 0, sizeof(*asset));

	asset->particles = new float[numVertices*4];
	memcpy(asset->particles, particles, numVertices*sizeof(float)*4);	

	asset->triangleIndices = new int[numTriangles*3];
	memcpy(asset->triangleIndices, indices, numTriangles*3*sizeof(int));

	asset->numParticles = numVertices;
	asset->maxParticles = numVertices;

	asset->numTriangles = numTriangles;

	// create cloth mesh
	ClothMesh cloth((Vec4*)particles, numVertices, indices, numTriangles*3, stretchStiffness, bendStiffness, true);

	if (cloth.mValid)
	{
		// create tethers
		if (tetherStiffness > 0.0f)
		{
			std::vector<int> anchors;
			anchors.reserve(numVertices);

			// find anchors
			for (int i=0; i < numVertices; ++i)
			{
				Vec4& particle = ((Vec4*)particles)[i];

				if (particle.w == 0.0f)
					anchors.push_back(i);
			}

			if (anchors.size())
			{
				// create tethers
				for (int i=0; i < numVertices; ++i)
				{
					Vec4& particle = ((Vec4*)particles)[i];
					if (particle.w == 0.0f)
						continue;

					float minSqrDist = FLT_MAX;
					int minIndex = -1;

					// find the closest attachment point
					for (int a=0; a < int(anchors.size()); ++a)
					{
						Vec4& attachment = ((Vec4*)particles)[anchors[a]];

						float distSqr = LengthSq(Vec3(particle)-Vec3(attachment));
						if (distSqr < minSqrDist)
						{
							minSqrDist = distSqr;
							minIndex = anchors[a];