private static void FlipScanEdgeEvent(DTSweepContext tcx, TriangulationPoint ep, TriangulationPoint eq, DelaunayTriangle flipTriangle, DelaunayTriangle t, TriangulationPoint p)
{
DelaunayTriangle delaunayTriangle = t.NeighborAcross(p);
TriangulationPoint triangulationPoint = delaunayTriangle.OppositePoint(t, p);
bool flag = delaunayTriangle == null;
if (flag)
{
throw new Exception("[BUG:FIXME] FLIP failed due to missing triangle");
}
bool flag2 = TriangulationUtil.InScanArea(eq, flipTriangle.PointCCW(eq), flipTriangle.PointCW(eq), triangulationPoint);
bool flag3 = flag2;
if (flag3)
{
DTSweep.FlipEdgeEvent(tcx, eq, triangulationPoint, delaunayTriangle, triangulationPoint);
}
else
{
TriangulationPoint p2 = DTSweep.NextFlipPoint(ep, eq, delaunayTriangle, triangulationPoint);
DTSweep.FlipScanEdgeEvent(tcx, ep, eq, flipTriangle, delaunayTriangle, p2);
}
}
private static void FlipEdgeEvent(DTSweepContext tcx, TriangulationPoint ep, TriangulationPoint eq, DelaunayTriangle t, TriangulationPoint p)
{
DelaunayTriangle delaunayTriangle = t.NeighborAcross(p);
TriangulationPoint triangulationPoint = delaunayTriangle.OppositePoint(t, p);
bool flag = delaunayTriangle == null;
if (flag)
{
throw new InvalidOperationException("[BUG:FIXME] FLIP failed due to missing triangle");
}
bool constrainedEdgeAcross = t.GetConstrainedEdgeAcross(p);
if (constrainedEdgeAcross)
{
throw new Exception("Intersecting Constraints");
}
bool flag2 = TriangulationUtil.InScanArea(p, t.PointCCW(p), t.PointCW(p), triangulationPoint);
bool flag3 = flag2;
if (flag3)
{
DTSweep.RotateTrianglePair(t, p, delaunayTriangle, triangulationPoint);
tcx.MapTriangleToNodes(t);
tcx.MapTriangleToNodes(delaunayTriangle);
bool flag4 = p == eq && triangulationPoint == ep;
if (flag4)
{
bool flag5 = eq == tcx.EdgeEvent.ConstrainedEdge.Q && ep == tcx.EdgeEvent.ConstrainedEdge.P;
if (flag5)
{
bool isDebugEnabled = tcx.IsDebugEnabled;
if (isDebugEnabled)
{
Console.WriteLine("[FLIP] - constrained edge done");
}
t.MarkConstrainedEdge(ep, eq);
delaunayTriangle.MarkConstrainedEdge(ep, eq);
DTSweep.Legalize(tcx, t);
DTSweep.Legalize(tcx, delaunayTriangle);
}
else
{
bool isDebugEnabled2 = tcx.IsDebugEnabled;
if (isDebugEnabled2)
{
Console.WriteLine("[FLIP] - subedge done");
}
}
}
else
{
bool isDebugEnabled3 = tcx.IsDebugEnabled;
if (isDebugEnabled3)
{
Console.WriteLine("[FLIP] - flipping and continuing with triangle still crossing edge");
}
Orientation o = TriangulationUtil.Orient2d(eq, triangulationPoint, ep);
t = DTSweep.NextFlipTriangle(tcx, o, t, delaunayTriangle, p, triangulationPoint);
DTSweep.FlipEdgeEvent(tcx, ep, eq, t, p);
}
}
else
{
TriangulationPoint p2 = DTSweep.NextFlipPoint(ep, eq, delaunayTriangle, triangulationPoint);
DTSweep.FlipScanEdgeEvent(tcx, ep, eq, t, delaunayTriangle, p2);
DTSweep.EdgeEvent(tcx, ep, eq, t, p);
}
}
