void OnDrawGizmos()
{
if (nd == null)
{
return;
}
plane.ComputePlane(nd.transform.position, nd.transform.forward);
Vector3 nSize = Vector3.one / 2.0f;
List <Vector3> upper = new List <Vector3>();
List <Vector3> lower = new List <Vector3>();
List <Vector3> intersection = new List <Vector3>();
plane.IntersectTriangleHull(pt1.transform.position, pt2.transform.position, pt3.transform.position, upper, lower, intersection);
if (drawPoints)
{
Gizmos.color = Color.yellow;
Gizmos.DrawWireCube(pt1.transform.position, Vector3.one);
Gizmos.DrawWireCube(pt2.transform.position, Vector3.one);
Gizmos.DrawWireCube(pt3.transform.position, Vector3.one);
Gizmos.color = Color.green;
foreach (Vector3 v in upper)
{
Gizmos.DrawCube(v, nSize);
}
Gizmos.color = Color.blue;
foreach (Vector3 v in lower)
{
Gizmos.DrawCube(v, nSize);
}
Gizmos.color = Color.red;
foreach (Vector3 v in intersection)
{
Gizmos.DrawCube(v, nSize);
}
}
if (drawTriangles)
{
upper.AddRange(intersection);
lower.AddRange(intersection);
List <int> indices = new List <int>();
Triangulator.TriangulateNDSlice(upper, indices);
Gizmos.color = Color.green;
for (int i = 0; i < indices.Count; i += 3)
{
Gizmos.DrawLine(upper[indices[i]], upper[indices[i + 1]]);
Gizmos.DrawLine(upper[indices[i + 1]], upper[indices[i + 2]]);
Gizmos.DrawLine(upper[indices[i + 2]], upper[indices[i]]);
}
Gizmos.color = Color.blue;
indices.Clear();
Triangulator.TriangulateNDSlice(lower, indices);
for (int i = 0; i < indices.Count; i += 3)
{
Gizmos.DrawLine(lower[indices[i]], lower[indices[i + 1]]);
Gizmos.DrawLine(lower[indices[i + 1]], lower[indices[i + 2]]);
Gizmos.DrawLine(lower[indices[i + 2]], lower[indices[i]]);
}
}
}
private void Split()
{
NDPlane plane = new NDPlane();
plane.ComputePlane((mpta + mptb + mptc) / 3, RandomVector3());
List <Vector3> upper = new List <Vector3>();
List <Vector3> lower = new List <Vector3>();
List <Vector3> intersection = new List <Vector3>();
plane.IntersectTriangleHull(mpta, mptb, mptc, upper, lower, intersection);
upper.AddRange(intersection);
lower.AddRange(intersection);
List <int> indices = new List <int>();
// UPPER HULL
Triangulator.TriangulateNDSlice(upper, indices);
for (int i = 0; i < indices.Count; i += 3)
{
RenderTriangle tri = new RenderTriangle();
Vector3 pta = upper[indices[i]];
Vector3 ptb = upper[indices[i + 1]];
Vector3 ptc = upper[indices[i + 2]];
Vector2 uva = Triangulator.GenerateUVCoords(ref mpta, ref mptb, ref mptc, ref muva, ref muvb, ref muvc, ref pta);
Vector2 uvb = Triangulator.GenerateUVCoords(ref mpta, ref mptb, ref mptc, ref muva, ref muvb, ref muvc, ref ptb);
Vector2 uvc = Triangulator.GenerateUVCoords(ref mpta, ref mptb, ref mptc, ref muva, ref muvb, ref muvc, ref ptc);
tri.SetPoints(pta, ptb, ptc);
tri.SetUV(uva, uvb, uvc);
splits.Add(tri);
}
indices.Clear();
// LOWER HULL
Triangulator.TriangulateNDSlice(lower, indices);
for (int i = 0; i < indices.Count; i += 3)
{
RenderTriangle tri = new RenderTriangle();
Vector3 pta = lower[indices[i]];
Vector3 ptb = lower[indices[i + 1]];
Vector3 ptc = lower[indices[i + 2]];
Vector2 uva = Triangulator.GenerateUVCoords(ref mpta, ref mptb, ref mptc, ref muva, ref muvb, ref muvc, ref pta);
Vector2 uvb = Triangulator.GenerateUVCoords(ref mpta, ref mptb, ref mptc, ref muva, ref muvb, ref muvc, ref ptb);
Vector2 uvc = Triangulator.GenerateUVCoords(ref mpta, ref mptb, ref mptc, ref muva, ref muvb, ref muvc, ref ptc);
tri.SetPoints(pta, ptb, ptc);
tri.SetUV(uva, uvb, uvc);
splits.Add(tri);
}
}
