private unsafe void RetrieveCloth(IntPtr worldHandle)
{
IntPtr positions = (IntPtr)0;
int positionsSize = 0;
IntPtr faces = (IntPtr)0;
int facesSize = 0;
//Debug.Log($"Attempt retrieve cloth. ClothHandle = {_clothHandle}");
UClothImports.ucloth_retrieveClothInfo(_clothHandle, worldHandle, ref positions, ref positionsSize, ref faces, ref facesSize);
Marshal.Copy(positions, _positionValues, 0, positionsSize * 3);
Vector3[] vertices = _mesh.vertices;
for (int i = 0; i < _mesh.vertices.Length; i++)
{
vertices[i] = new Vector3(_positionValues[i * 3], _positionValues[i * 3 + 1], _positionValues[i * 3 + 2]);
}
_mesh.vertices = vertices;
}
private unsafe IntPtr CreateCloth(IntPtr worldHandle, Mesh mesh, float mass, float elasticity, float damping)
{
Vector3[] vertices = mesh.vertices;
int[] faces = mesh.triangles;
// allocate arrays one time only for performance. We don't wanna allocate each time for marshalling later.
if (_positionValues == null)
{
_positionValues = new float[vertices.Length * 3];
}
if (_facesValues == null)
_facesValues = new int[faces.Length];
fixed(Vector3 *v = vertices)
{
fixed(int *f = faces)
{
return(UClothImports.ucloth_addCloth(worldHandle, v, mesh.vertexCount, f, mesh.triangles.Length, mass, elasticity, damping));
}
}
}
UClothWorld()
{
_worldHandle = UClothImports.ucloth_createWorld();
UClothImports.ucloth_addAcceleration(_worldHandle, ref gravity);
}
// Update is called once per frame
void OnDestroy()
{
UClothImports.ucloth_deletePBDSimulation(_simulationHandle);
Debug.Log("Destroyed PBD simulation");
}
void FixedUpdate()
{
UClothImports.ucloth_simulate(_simulationHandle, UClothWorld.Instance.GetHandle(), 5, Time.fixedDeltaTime);
}
// Start is called before the first frame update
void Awake()
{
Debug.Log("Attempt create PBD simulation");
_simulationHandle = UClothImports.ucloth_createPBDSimulation();
Debug.Log("Created PBD simulation");
}
private void AttachIndexToPosition(IntPtr worldHandle, IntPtr clothHandle, uint index, Vector3 position)
{
UClothImports.ucloth_attachParticleToPosition(worldHandle, clothHandle, index, position);
}