protected virtual IEnumerator CreateDistanceConstraints()
{
//Create distance constraints:
List <int> edges = topology.GetEdgeList();
distanceConstraintsData = new ObiDistanceConstraintsData();
List <int> particleIndices = new List <int>();
List <int> constraintIndices = new List <int>();
for (int i = 0; i < edges.Count; i++)
{
HalfEdgeMesh.HalfEdge hedge = topology.halfEdges[edges[i]];
particleIndices.Add(topology.GetHalfEdgeStartVertex(hedge));
particleIndices.Add(hedge.endVertex);
constraintIndices.Add(constraintIndices.Count * 2);
if (i % 500 == 0)
{
yield return(new CoroutineJob.ProgressInfo("ObiCloth: generating structural constraints...", i / (float)edges.Count));
}
}
constraintIndices.Add(constraintIndices.Count * 2);
int[] constraintColors = GraphColoring.Colorize(particleIndices.ToArray(), constraintIndices.ToArray());
for (int i = 0; i < constraintColors.Length; ++i)
{
int color = constraintColors[i];
int cIndex = constraintIndices[i];
// Add a new batch if needed:
if (color >= distanceConstraintsData.GetBatchCount())
{
distanceConstraintsData.AddBatch(new ObiDistanceConstraintsBatch());
}
HalfEdgeMesh.HalfEdge hedge = topology.halfEdges[edges[i]];
HalfEdgeMesh.Vertex startVertex = topology.vertices[topology.GetHalfEdgeStartVertex(hedge)];
HalfEdgeMesh.Vertex endVertex = topology.vertices[hedge.endVertex];
distanceConstraintsData.batches[color].AddConstraint(new Vector2Int(particleIndices[cIndex], particleIndices[cIndex + 1]),
Vector3.Distance(Vector3.Scale(scale, startVertex.position), Vector3.Scale(scale, endVertex.position)));
}
// Set initial amount of active constraints:
for (int i = 0; i < distanceConstraintsData.batches.Count; ++i)
{
distanceConstraintsData.batches[i].activeConstraintCount = distanceConstraintsData.batches[i].constraintCount;
}
}
public IEnumerable <IObiConstraints> GetConstraints()
{
if (distanceConstraintsData != null && distanceConstraintsData.GetBatchCount() > 0)
{
yield return(distanceConstraintsData);
}
if (bendConstraintsData != null && bendConstraintsData.GetBatchCount() > 0)
{
yield return(bendConstraintsData);
}
if (pinConstraintsData != null && pinConstraintsData.GetBatchCount() > 0)
{
yield return(pinConstraintsData);
}
if (skinConstraintsData != null && skinConstraintsData.GetBatchCount() > 0)
{
yield return(skinConstraintsData);
}
if (tetherConstraintsData != null && tetherConstraintsData.GetBatchCount() > 0)
{
yield return(tetherConstraintsData);
}
if (stretchShearConstraintsData != null && stretchShearConstraintsData.GetBatchCount() > 0)
{
yield return(stretchShearConstraintsData);
}
if (bendTwistConstraintsData != null && bendTwistConstraintsData.GetBatchCount() > 0)
{
yield return(bendTwistConstraintsData);
}
if (shapeMatchingConstraintsData != null && shapeMatchingConstraintsData.GetBatchCount() > 0)
{
yield return(shapeMatchingConstraintsData);
}
if (aerodynamicConstraintsData != null && aerodynamicConstraintsData.GetBatchCount() > 0)
{
yield return(aerodynamicConstraintsData);
}
if (chainConstraintsData != null && chainConstraintsData.GetBatchCount() > 0)
{
yield return(chainConstraintsData);
}
if (volumeConstraintsData != null && volumeConstraintsData.GetBatchCount() > 0)
{
yield return(volumeConstraintsData);
}
}
