private static void FillBasin(DTSweepContext tcx, AdvancingFrontNode node)
{
bool flag = TriangulationUtil.Orient2d(node.Point, node.Next.Point, node.Next.Next.Point) == Orientation.CCW;
if (flag)
{
tcx.Basin.leftNode = node;
}
else
{
tcx.Basin.leftNode = node.Next;
}
tcx.Basin.bottomNode = tcx.Basin.leftNode;
while (tcx.Basin.bottomNode.HasNext && tcx.Basin.bottomNode.Point.Y >= tcx.Basin.bottomNode.Next.Point.Y)
{
tcx.Basin.bottomNode = tcx.Basin.bottomNode.Next;
}
bool flag2 = tcx.Basin.bottomNode == tcx.Basin.leftNode;
if (!flag2)
{
tcx.Basin.rightNode = tcx.Basin.bottomNode;
while (tcx.Basin.rightNode.HasNext && tcx.Basin.rightNode.Point.Y < tcx.Basin.rightNode.Next.Point.Y)
{
tcx.Basin.rightNode = tcx.Basin.rightNode.Next;
}
bool flag3 = tcx.Basin.rightNode == tcx.Basin.bottomNode;
if (!flag3)
{
tcx.Basin.width = tcx.Basin.rightNode.Point.X - tcx.Basin.leftNode.Point.X;
tcx.Basin.leftHighest = (tcx.Basin.leftNode.Point.Y > tcx.Basin.rightNode.Point.Y);
DTSweep.FillBasinReq(tcx, tcx.Basin.bottomNode);
}
}
}
private static void FillBasinReq(DTSweepContext tcx, AdvancingFrontNode node)
{
bool flag = DTSweep.IsShallow(tcx, node);
if (!flag)
{
DTSweep.Fill(tcx, node);
bool flag2 = node.Prev == tcx.Basin.leftNode && node.Next == tcx.Basin.rightNode;
if (!flag2)
{
bool flag3 = node.Prev == tcx.Basin.leftNode;
if (flag3)
{
Orientation orientation = TriangulationUtil.Orient2d(node.Point, node.Next.Point, node.Next.Next.Point);
bool flag4 = orientation == Orientation.CW;
if (flag4)
{
return;
}
node = node.Next;
}
else
{
bool flag5 = node.Next == tcx.Basin.rightNode;
if (flag5)
{
Orientation orientation2 = TriangulationUtil.Orient2d(node.Point, node.Prev.Point, node.Prev.Prev.Point);
bool flag6 = orientation2 == Orientation.CCW;
if (flag6)
{
return;
}
node = node.Prev;
}
else
{
bool flag7 = node.Prev.Point.Y < node.Next.Point.Y;
if (flag7)
{
node = node.Prev;
}
else
{
node = node.Next;
}
}
}
DTSweep.FillBasinReq(tcx, node);
}
}
}
