public static bool ContainsListPair(List <TopoEdgePair> list, TopoEdge a, TopoEdge b)
{
foreach (TopoEdgePair pair in list)
{
if (pair.ContainsEdgePair(a, b))
{
return(true);
}
}
return(false);
}
public List <TopoEdge> FindNeighbourEdgesWithOneFace()
{
List <TopoEdge> list = null;
TopoTriangle thisFace = faces.First.Value;
foreach (TopoTriangle face in v1.connectedFacesList)
{
if (face == thisFace)
{
continue;
}
for (int e = 0; e < 3; e++)
{
TopoEdge testEdge = face.edges[e];
if (testEdge.connectedFaces != 1)
{
continue;
}
if (testEdge.ContainsVertex(v1))
{
if (list == null)
{
list = new List <TopoEdge>();
}
list.Add(testEdge);
}
}
}
foreach (TopoTriangle face in v2.connectedFacesList)
{
if (face == thisFace)
{
continue;
}
for (int e = 0; e < 3; e++)
{
TopoEdge testEdge = face.edges[e];
if (testEdge.connectedFaces != 1)
{
continue;
}
if (testEdge.ContainsVertex(v2))
{
if (list == null)
{
list = new List <TopoEdge>();
}
list.Add(testEdge);
}
}
}
return(list);
}
public void FlipDirection()
{
normal.Scale(-1);
TopoVertex v = vertices[0];
vertices[0] = vertices[1];
vertices[1] = v;
TopoEdge e = edges[1];
edges[1] = edges[2];
edges[2] = e;
}
public double alphaBeta; // Sum of dihedral angles to a virtual shared triangle
public TopoEdgePair(TopoEdge _edgeA, TopoEdge _edgeB)
{
edgeA = _edgeA;
edgeB = _edgeB;
RHVector3 sharedPoint = null;
RHVector3 p1 = null, p2 = null;
if (edgeA.v1 == edgeB.v1)
{
sharedPoint = edgeA.v1.pos;
p1 = edgeA.v2.pos;
p2 = edgeB.v2.pos;
}
else if (edgeA.v1 == edgeB.v2)
{
sharedPoint = edgeA.v1.pos;
p1 = edgeA.v2.pos;
p2 = edgeB.v1.pos;
}
else if (edgeA.v2 == edgeB.v1)
{
sharedPoint = edgeA.v1.pos;
p1 = edgeA.v1.pos;
p2 = edgeB.v2.pos;
}
else if (edgeA.v2 == edgeB.v2)
{
sharedPoint = edgeA.v2.pos;
p1 = edgeA.v1.pos;
p2 = edgeB.v1.pos;
}
RHVector3 d1 = p1.Subtract(sharedPoint);
RHVector3 d2 = p2.Subtract(sharedPoint);
RHVector3 normal = d1.CrossProduct(d2);
normal.NormalizeSafe();
alphaBeta = normal.AngleForNormalizedVectors(edgeA.faces.First.Value.normal) + normal.AngleForNormalizedVectors(edgeB.faces.First.Value.normal);
if (alphaBeta > Math.PI) // normal was wrong direction
{
alphaBeta = 2 * Math.PI - alphaBeta;
}
}
public TopoEdge CommonThirdEdge()
{
TopoVertex v1 = edgeA.v1;
if (edgeB.v1 == v1 || edgeB.v2 == v1)
{
v1 = edgeA.v2;
}
TopoVertex v2 = edgeB.v1;
if (edgeA.v1 == v2 || edgeA.v2 == v2)
{
v2 = edgeB.v2;
}
foreach (TopoTriangle t in v1.connectedFacesList)
{
TopoEdge e = t.EdgeWithVertices(v1, v2);
if (e != null)
{
return(e);
}
}
return(null);
}
public bool ContainsEdgePair(TopoEdge a, TopoEdge b)
{
return(ContainsEdge(a) && ContainsEdge(b));
}
public bool ContainsEdge(TopoEdge edge)
{
return(edgeA == edge || edgeB == edge);
}