How to convert ASSIMP mesh to physx convex mesh

[KielanT]

Hi, I'm trying to convert a mesh from an assimp object to a physx convex mesh. The code I have done works fine for object such as a vehicle, however for a mesh that is a loop the physx mesh gets filled in. (Images below). Any ideas on how I can fix this?

`
// Create the mesh
static physx::PxConvexMesh* CreateConvexMesh(const physx::PxVec3* verts, const physx::PxU32 numVerts, physx::PxPhysics* physics, physx::PxCooking* cooking)
{
// Create descriptor for convex mesh
physx::PxConvexMeshDesc convexDesc;
convexDesc.points.count = numVerts;
convexDesc.points.stride = sizeof(physx::PxVec3);
convexDesc.points.data = verts;
convexDesc.flags = physx::PxConvexFlag::eCOMPUTE_CONVEX;

	physx::PxConvexMesh* convexMesh = NULL;
	physx::PxDefaultMemoryOutputStream buf;
	if (cooking->cookConvexMesh(convexDesc, buf))
	{
		physx::PxDefaultMemoryInputData id(buf.getData(), buf.getSize());
		convexMesh = physics->createConvexMesh(id);
	}
	

	return convexMesh;
}

// Creates the object out of the assimp mesh
physx::PxConvexMesh* class::MakeObject(int index, Entity* entity)
{
	physx::PxU32 vertexCount;
	std::vector<physx::PxVec3> vertices;
	if (entity != nullptr)
	{

		if (mesh)
		{

			vertexCount = mesh->GetNumberOfVertices(index);

			std::vector<CVector3> meshVertices = mesh->GetVertices();
			// Copy from cvector array to PxVec3 array
			for (int i = 0; i < vertexCount; i++)
			{
				vertices.push_back(physx::PxVec3(trackVertices[i].x, trackVertices[i].y, trackVertices[i].z));
			}

			physx::PxVec3* v = vertices.data();

			return CreateConvexMesh(v, vertexCount, m_PhysicsSystem->GetPhysics(), m_PhysicsSystem->GetCooking());
		}
	}
	return nullptr;
}

`

What the mesh looks like (In blender but looks like this in my project)

What the mesh looks like in the physx visual debugger

[Zeblote]

It's a convex mesh, so this is the expected result. If you need it to be hollow, try creating a triangle mesh collider instead.

[KielanT]

It's a convex mesh, so this is the expected result. If you need it to be hollow, try creating a triangle mesh collider instead.

This solved my issue thank you