public PlanarEdge(HardEdge edge, Triangle triangle, Plane plane)
{
Face = triangle;
OrigEdge = edge;
P1 = plane.ProjectPoint(edge.P1);
P2 = plane.ProjectPoint(edge.P2);
OutlineDirection = plane.ProjectVector(edge.OutlineDirection);
IsTriangleEdge = triangle.ContainsVertex(edge.P1) &&
triangle.ContainsVertex(edge.P2) &&
triangle.Normal.Equals(edge.FaceNormal, 0.05f);
Direction = (P2 - P1).Normalized();
}
public bool GetBySharedVertex(HardEdge edge, Vector3 vertex, out HardEdge result)
{
result = null;
if (InnerDict.TryGetValue(vertex, out List <HardEdge> sharedEdges))
{
var nearEdges = sharedEdges
.Where(x => x != edge &&
Vector3.AngleBetween(x.FaceNormal, edge.FaceNormal) <= BreakAngleRad &&
Vector3.AngleBetween(x.OutlineDirection, edge.OutlineDirection) <= fPI * 0.85
)
.OrderBy(x => Vector3.AngleBetween(x.FaceNormal, edge.FaceNormal))
.ThenBy(x => Vector3.AngleBetween(x.OutlineDirection, edge.OutlineDirection));
if (nearEdges.Count() > 0)
{
result = nearEdges.First();
return(true);
}
}
return(false);
}
static ProjectedEdge CreateClippingEdge(ProjectedEdge baseEdge, Vector3 edgeEnd, Plane facePlane)
{
var triangle = baseEdge.PlanarEdge.Face;
var oppVert = baseEdge.PlanarEdge.GetOppositeVertex(edgeEnd);
var outlineDir = (edgeEnd - oppVert).Normalized();
var interEdge = new HardEdge(
edgeEnd,
edgeEnd + baseEdge.PlanarEdge.OutlineDirection,
facePlane.Normal,
outlineDir);
interEdge.CorrectOrder();
var planarEndEdge = new PlanarEdge(interEdge, triangle, facePlane);
var interProjected = planarEndEdge.ProjectTriangle(triangle, edgeEnd);
interProjected.NeedsToBeClipped = true;
baseEdge.CombineWith = interProjected;
interProjected.CombineWith = baseEdge;
return(interProjected);
}
