public CMesh(AMesh lMesh)
{
V = new CVertex[lMesh.V.Length];
for (int i = 0; i < lMesh.V.Length; i++)
{
V[i] = new CVertex(lMesh.V[i].Position);
}
E = new CEdge[lMesh.E.Length];
for (int i = 0; i < lMesh.E.Length; i++)
{
int[] lVerts = new int[2] {
lMesh.E[i].Vertices[0], lMesh.E[i].Vertices[1]
};
int[] lFaces = new int[2] {
lMesh.E[i].Faces[0], lMesh.E[i].Faces[1]
};
E[i] = new CEdge(lVerts, lFaces);
}
F = new CFace[lMesh.F.Length];
for (int i = 0; i < lMesh.F.Length; i++)
{
int[] lEdges = new int[lMesh.F[i].Edges.Length];
for (int j = 0; j < lMesh.F[i].Edges.Length; j++)
{
lEdges[j] = lMesh.F[i].Edges[j];
}
F[i] = new CFace(lEdges, lMesh.F[i].Plane);
}
}
public void AppendVertex(CVertex lNewVertex)
{
CVertex[] lTemp = new CVertex[V.Length + 1];
for (int i = 0; i < V.Length; i++)
{
lTemp[i] = V[i];
}
lTemp[V.Length] = lNewVertex;
V = lTemp;
}
private static ClipOperationResult ProcessVertices(ref CMesh lCMesh, Plane lPlane)
{
int lPosCount = 0;
int lNegCount = 0;
for (int i = 0; i < lCMesh.V.Length; i++)
{
CVertex lV = lCMesh.V[i];
if (lV.Visible)
{
lV.Distance = Vector3.Dot(lPlane.Normal, lCMesh.V[i].Position) - lPlane.C;
if (lV.Distance >= s_Epsilon)
{
lPosCount++;
}
else if (lV.Distance <= -s_Epsilon)
{
lNegCount++;
lV.Visible = false;
}
else
{
lV.Distance = 0f;
}
lCMesh.V[i] = lV;
}
}
if (lNegCount == 0)
{
return(ClipOperationResult.AllPositive);
}
if (lPosCount == 0)
{
return(ClipOperationResult.AllNegative);
}
return(ClipOperationResult.Mixed);
}
private static void ProcessEdges(ref CMesh lCMesh, Plane lPlane)
{
for (int i = 0; i < lCMesh.E.Length; i++)
{
CEdge lE = lCMesh.E[i];
if (lE.Visible)
{
float lD0 = lCMesh.V[lE.Vertices[0]].Distance;
float lD1 = lCMesh.V[lE.Vertices[1]].Distance;
if (lD0 <= 0f && lD1 <= 0f)
{
for (int j = 0; j < lE.Faces.Length; j++)
{
CFace lF = lCMesh.F[lE.Faces[j]];
lF.RemoveEdge(i);
if (lF.Edges.Length == 0)
{
lF.Visible = false;
}
lCMesh.F[lE.Faces[j]] = lF;
}
lE.Visible = false;
lCMesh.E[i] = lE;
continue;
}
if (lD0 >= 0f && lD1 >= 0f)
{
lCMesh.E[i] = lE;
continue;
}
float lT = lD0 / (lD0 - lD1);
Vector3 lDelta0 = (1f - lT) * lCMesh.V[lE.Vertices[0]].Position;
Vector3 lDelta1 = lT * lCMesh.V[lE.Vertices[1]].Position;
Vector3 lIntersect = lDelta0 + lDelta1;
int lIndex = lCMesh.V.Length;
CVertex lNewVertex = new CVertex(lIntersect);
lCMesh.AppendVertex(lNewVertex);
if (lD0 > 0)
{
lE.Vertices[1] = lIndex;
}
else
{
lE.Vertices[0] = lIndex;
}
lCMesh.E[i] = lE;
}
}
}
