public Face CreateFace(Vertex[] verticesToUse, CreateOption createOption = CreateOption.ReuseExisting)
{
if (verticesToUse.Length == 3 &&
(verticesToUse[0].Position == verticesToUse[1].Position ||
verticesToUse[1].Position == verticesToUse[2].Position ||
verticesToUse[2].Position == verticesToUse[0].Position))
{
return(null);
}
if (verticesToUse.Length < 3)
{
throw new ArgumentException("A face cannot have less than 3 vertices.");
}
List <MeshEdge> edgesToUse = new List <MeshEdge>();
for (int i = 0; i < verticesToUse.Length - 1; i++)
{
edgesToUse.Add(CreateMeshEdge(verticesToUse[i], verticesToUse[i + 1], createOption));
}
edgesToUse.Add(CreateMeshEdge(verticesToUse[verticesToUse.Length - 1], verticesToUse[0], createOption));
// make the face and set it's data
Face createdFace = new Face();
CreateFaceEdges(verticesToUse, edgesToUse, createdFace);
createdFace.CalculateNormal();
faces.Add(createdFace);
return(createdFace);
}
public void ReverseFaceEdges(Face faceToReverse)
{
FaceEdge temp = null;
FaceEdge current = faceToReverse.firstFaceEdge;
// swap next and prev for all nodes of
// doubly linked list
do
{
temp = current.prevFaceEdge;
current.prevFaceEdge = current.nextFaceEdge;
current.nextFaceEdge = temp;
current = current.prevFaceEdge; // go to the next
} while (current != faceToReverse.firstFaceEdge);
faceToReverse.CalculateNormal();
}
public Face CreateFace(Vertex[] verticesToUse, CreateOption createOption = CreateOption.ReuseExisting)
{
if (verticesToUse.Length == 3
&& (verticesToUse[0].Position == verticesToUse[1].Position
|| verticesToUse[1].Position == verticesToUse[2].Position
|| verticesToUse[2].Position == verticesToUse[0].Position))
{
return null;
}
if (verticesToUse.Length < 3)
{
throw new ArgumentException("A face cannot have less than 3 vertices.");
}
List<MeshEdge> edgesToUse = new List<MeshEdge>();
for (int i = 0; i < verticesToUse.Length - 1; i++)
{
edgesToUse.Add(CreateMeshEdge(verticesToUse[i], verticesToUse[i + 1], createOption));
}
edgesToUse.Add(CreateMeshEdge(verticesToUse[verticesToUse.Length - 1], verticesToUse[0], createOption));
// make the face and set it's data
Face createdFace = new Face();
CreateFaceEdges(verticesToUse, edgesToUse, createdFace);
createdFace.CalculateNormal();
faces.Add(createdFace);
return createdFace;
}
public void ReverseFaceEdges(Face faceToReverse)
{
FaceEdge temp = null;
FaceEdge current = faceToReverse.firstFaceEdge;
// swap next and prev for all nodes of
// doubly linked list
do
{
temp = current.prevFaceEdge;
current.prevFaceEdge = current.nextFaceEdge;
current.nextFaceEdge = temp;
current = current.prevFaceEdge; // go to the next
} while (current != faceToReverse.firstFaceEdge);
faceToReverse.CalculateNormal();
}