/**
* Tears a cloth distance constraint, affecting both the physical representation of the cloth and its mesh.
*/
public bool Tear(StructuralConstraint edge)
{
// don't allow splitting if there are no free particles left in the pool.
if (activeParticleCount >= m_TearableClothBlueprint.particleCount)
{
return(false);
}
// get particle indices at both ends of the constraint:
ParticlePair indices = edge.batchIndex.GetParticleIndices(edge.constraintIndex);
// Try to perform a split operation on the topology. If we cannot perform it, bail out.
Vector3 point, normal;
HashSet <int> updatedHalfEdges = new HashSet <int>();
List <HalfEdgeMesh.Face> updatedFaces = new List <HalfEdgeMesh.Face>();
if (!TopologySplitAttempt(ref indices.first, ref indices.second, out point, out normal, updatedFaces, updatedHalfEdges))
{
return(false);
}
int splitActorIndex = solver.particleToActor[indices.first].indexInActor;
// Weaken edges around the cut:
WeakenCutPoint(splitActorIndex, point, normal);
// split the particle in two, adding a new active particle:
SplitParticle(splitActorIndex);
// update constraints:
UpdateTornDistanceConstraints(updatedHalfEdges);
UpdateTornBendConstraints(indices.first);
if (OnConstraintTorn != null)
{
OnConstraintTorn(this, new ObiConstraintTornEventArgs(edge, splitActorIndex, updatedFaces));
}
return(true);
}
public ObiClothTornEventArgs(StructuralConstraint edge, int particle, List <HalfEdgeMesh.Face> updatedFaces)
{
this.edge = edge;
this.particleIndex = particle;
this.updatedFaces = updatedFaces;
}