private void LoopFlatBodies(Face startFace)
{
List <FlatFin> remainingFins = new List <FlatFin>();
FlatFin nextFin = null;
while (true)
{
FlatBody flatBody = new FlatBody(this);
flatBodies.Add(flatBody);
FlatFace baseFace = new FlatFace(startFace, flatBody);
FlatLoop flatLoop = null;
foreach (FlatLoop testLoop in baseFace.Loops)
{
if (testLoop.SourceLoop.IsOuter)
{
flatLoop = testLoop;
break;
}
}
Debug.Assert(flatLoop != null);
Point startPoint = flatLoop.SourcePoints[0];
Point endPoint = flatLoop.SourcePoints[1];
Frame startFrame = Frame.Create(startPoint, (endPoint - startPoint).Direction, baseFace.SourcePlane.Frame.DirZ);
Frame endFrame;
if (nextFin == null) // Pick the origin on the first pass, otherwise place it where it overlaps
{
endFrame = Frame.Create(Point.Origin, Direction.DirX, -Direction.DirZ);
}
else // use the location of the open fin on the FlatBody where it couldn't be placed
{
endFrame = Frame.Create(nextFin.End, (nextFin.Start - nextFin.End).Direction, -Direction.DirZ);
}
baseFace.Transform = Matrix.CreateMapping(endFrame) * Matrix.CreateMapping(startFrame).Inverse;
flatBody.AddFace(baseFace);
remainingFins.AddRange(LoopUnfold(flatBody)); // Most of the unfolding work is here
List <FlatFin> cleanRemainingFins = new List <FlatFin>();
foreach (FlatFin flatFin in remainingFins)
{
if (!FlatFaceExists(flatFin.AdjacentFin.FlatFace.SourceFace))
{
cleanRemainingFins.Add(flatFin);
}
}
remainingFins = cleanRemainingFins;
if (remainingFins.Count == 0)
{
return;
}
else
{
nextFin = remainingFins[0];
remainingFins.Remove(nextFin);
startFace = nextFin.AdjacentFin.FlatFace.SourceFace;
}
}
}
public FlatFin(FlatLoop flatLoop, Fin sourceFin)
{
this.flatLoop = flatLoop;
this.sourceFin = sourceFin;
}