private void windVertices()
{
Vector3 n = plane.getNormal();
//find the center of the polygon by taking the average of the vertices
Vector3 cent = getCenter();
//selection sort these guys using the cosVal function
for (int i = 0; i < vertices.Count - 1; i++)
{
int minVert = i + 1;
double minCosVal = cosVal(cent, n, vertices[i].position, vertices[i + 1].position);
for (int j = i + 2; j < vertices.Count; j++)
{
double cv = cosVal(cent, n, vertices[i].position, vertices[j].position);
if (cv < minCosVal)
{
minVert = j;
minCosVal = cv;
}
}
Vertex v = vertices[minVert];
vertices.RemoveAt(minVert);
vertices.Insert(i + 1, v);
}
//calculate the normal of this face and if it doesn't match up with the plane, reverse the winding
//this inequailty and the inequality in the cosVal function seem linked somehow
if (Vector3.Dot(Vector3.Cross(vertices[0].position - cent, vertices[1].position - cent), n) > 0)
{
vertices.Reverse();
}
}
public Vertex getIntersection(Plane p1, Plane p2, Plane p3)
{
return getIntersection(p1.getNormal(), p2.getNormal(), p3.getNormal(), (float)(p1.getD()), (float)(p2.getD()), (float)(p3.getD()));
}
public Vertex getIntersection(Plane p1, Plane p2, Plane p3)
{
return(getIntersection(p1.getNormal(), p2.getNormal(), p3.getNormal(), (float)(p1.getD()), (float)(p2.getD()), (float)(p3.getD())));
}
