MeshInfo FastFillCutEdges(List <Vector3> edges, Vector3 pos, Vector3 normal)
{
if (edges.Count < 3)
{
throw new Exception("edges point less 3!");
}
for (int i = 0; i < edges.Count - 3; i++)
{
Vector3 t = edges[i + 1];
Vector3 temp = edges[i + 3];
for (int j = i + 2; j < edges.Count - 1; j += 2)
{
if ((edges[j] - t).sqrMagnitude < 1e-6)
{
edges[j] = edges[i + 2];
edges[i + 3] = edges[j + 1];
edges[j + 1] = temp;
break;
}
if ((edges[j + 1] - t).sqrMagnitude < 1e-6)
{
edges[j + 1] = edges[i + 2];
edges[i + 3] = edges[j];
edges[j] = temp;
break;
}
}
edges.RemoveAt(i + 2);
}
edges.RemoveAt(edges.Count - 1);
Vector4 tangent = MeshInfo.CalculateTangent(normal);
MeshInfo cutEdges = new MeshInfo();
for (int i = 0; i < edges.Count; i++)
{
cutEdges.Add(edges[i], Vector2.zero, normal, tangent);
}
int count = edges.Count - 1;
for (int i = 1; i < count; i++)
{
cutEdges.triangles.Add(0);
cutEdges.triangles.Add(i);
cutEdges.triangles.Add(i + 1);
}
cutEdges.center = MeshInfo.center;
cutEdges.size = MeshInfo.size;
cutEdges.MapperCube(uvRange);
return(cutEdges);
}
MeshInfo FillCutEdges(List <Vector3> edges, Vector3 pos, Vector3 normal)
{
if (edges.Count < 3)
{
throw new Exception("edges point less 3!");
}
for (int i = 0; i < edges.Count; i++)
{
for (int j = i + 1; j < edges.Count; j++)
{
if ((edges[i] - edges[j]).sqrMagnitude < 1e-5f)
{
edges.RemoveAt(j);
}
}
}
Vector3 start = edges[0];
Vector3 dir = Vector3.zero;
for (int i = 1; i < edges.Count; i++)
{
if (dir == Vector3.zero)
{
dir = edges[i] - start;
}
}
dir.Normalize();
int count = edges.Count - 1;
for (int i = 2; i < count; i++)
{
Vector3 a = edges[i] - start;
float angle = Vector3.Dot(a.normalized, dir);
float dis = a.sqrMagnitude;
if (dis < 1e-6f)
{
continue;
}
bool change = false;
for (int j = i + 1; j < edges.Count; j++)
{
Vector3 b = edges[j] - start;
float _angle = Vector3.Dot(b.normalized, dir);
float _dis = b.sqrMagnitude;
bool next = _dis <= dis;
next = (angle - _angle < 0.001f) && (_angle > 0.9999f ? _dis < dis : _dis >= dis);
next = change ? false : next;
if (_angle - angle > 0.001f || next || _dis < 1e-6f)
{
if (_angle - angle > 0.001f)
{
change = true;
}
angle = _angle;
dis = _dis;
Vector3 temp;
temp = edges[i];
edges[i] = edges[j];
edges[j] = temp;
}
}
}
Vector4 tangent = MeshInfo.CalculateTangent(normal);
MeshInfo cutEdges = new MeshInfo();
for (int i = 0; i < edges.Count; i++)
{
cutEdges.Add(edges[i], Vector2.zero, normal, tangent);
}
for (int i = 1; i < count; i++)
{
cutEdges.triangles.Add(0);
cutEdges.triangles.Add(i);
cutEdges.triangles.Add(i + 1);
}
cutEdges.center = MeshInfo.center;
cutEdges.size = MeshInfo.size;
cutEdges.MapperCube(uvRange);
return(cutEdges);
}