public static void ValidateFace(NativeHull hull, int faceIndex)
{
if (faceIndex < 0)
{
throw new ArgumentOutOfRangeException(nameof(faceIndex));
}
NativeFace face = hull.GetFace(faceIndex);
Debug.Assert(face.Edge >= 0,
"All faces should point to a starting edge index");
Debug.Assert(face.Edge < hull.EdgeCount,
"A face references an out of range edge index");
NativeHalfEdge startEdge = hull.GetEdge(face.Edge);
NativeHalfEdge current = startEdge;
int currentIndex = face.Edge;
var edgeCount = 0;
do
{
var next = hull.GetEdge(current.Next);
Debug.Assert(faceIndex == current.Face,
"All edges in a face loop should point to the same face");
Debug.Assert(currentIndex == next.Prev,
"Next and previous edges in a face loop should point to each other");
ValidateEdge(hull, currentIndex);
if (++edgeCount >= hull.EdgeCount)
{
Debug.Assert(true, "Infinite loop in face edges");
break;
}
currentIndex = current.Next;
current = next;
}while (current.Origin != startEdge.Origin);
Debug.Assert(edgeCount > 1,
"Faces should have more than one edge");
}
public static unsafe void CheckAllVerticesAreUsed(NativeHull hull)
{
for (int i = 0; i < hull.VertexCount; i++)
{
bool isUsed = false;
for (int j = 0; j < hull.EdgeCount; j++)
{
NativeHalfEdge edge = hull.GetEdge(j);
if (edge.Origin == i)
{
isUsed = true;
break;
}
}
Debug.Assert(isUsed,
"All vertices should be used by an edge");
}
}