public void CreateTriangle(int id1, int id2, int id3)
{
Matrix4x4 world2Object = gameObject.transform.worldToLocalMatrix;
GameObject[] points = { particles[id1], particles[id2], particles[id3] };
FracTriangle newTriangle = new FracTriangle(world2Object, points, mu, lambda, phi, psi);
triangles.Add(newTriangle);
}
public void CutElement(int fracturePointId, Vector3 p1, FracTriangle triangle, GameObject particleOnPlane)
{
// Duplicate Fracture point
GameObject originalP = particles[fracturePointId];
FracParticle fpOriginal = originalP.GetComponent <FracParticle>();
// Duplicate Particle and assign side of plane.
// The new particle is defined as always on the positive side of the plane
GameObject duplicateP = DuplicateParticle(fracturePointId);
FracParticle fpDupplicate = duplicateP.GetComponent <FracParticle>();
fpOriginal.Side = false;
fpDupplicate.Side = true;
// If the other point is an already existing particle, then no other points to create
GameObject secondPoint;
if (particleOnPlane != null)
{
secondPoint = particleOnPlane;
// HACK: This is a poor way of doing this search. Just trying to make it work here first.
// Check if a spring between the originalPoint and the second point already exists
bool alreadyExists = false;
for (int i = 0; i < fpOriginal.Springs.Count; ++i)
{
Spring s = fpOriginal.Springs[i];
if ((s.P2.gameObject == secondPoint && s.P1.gameObject == originalP) ||
(s.P1.gameObject == secondPoint && s.P2.gameObject == originalP))
{
alreadyExists = true;
}
}
if (!alreadyExists)
{
Spring s = originalP.AddComponent <Spring>();
s.Initialize(originalP.GetComponent <Rigidbody>(), secondPoint.GetComponent <Rigidbody>());
}
Spring ds = duplicateP.AddComponent <Spring>();
ds.Initialize(duplicateP.GetComponent <Rigidbody>(), secondPoint.GetComponent <Rigidbody>());
}
else
{
secondPoint = CreateParticle(p1);
}
// Reassign springs
for (int i = 0; i < fpOriginal.Springs.Count; ++i)
{
Spring s = fpOriginal.Springs[i];
GameObject otherPoint = s.GetOtherPoint(originalP);
FracParticle sfp = otherPoint.GetComponent <FracParticle>();
if (sfp.gameObject == secondPoint)
{
continue;
}
else
{
Assert.IsTrue(sfp.SideIsSet, "FracMesh : CutElement : Side is not set. Can't reassign springs");
}
// if spring particle doesn't have the same side as the initial particle, then the spring must be
// re-assigned to the duplicate. Otherwise, nothing to change
if (sfp.Side != fpOriginal.Side)
{
s.Initialize(otherPoint.GetComponent <Rigidbody>(), duplicateP.GetComponent <Rigidbody>());
}
}
}
