private void DoSubtract()
{
// Do the subtraction.
PolyClipError error;
Vertices subtract = TraceClipper.Difference(_left, _right, out error);
// Check for errors
switch (error)
{
case PolyClipError.NoIntersections:
WriteMessage("ERROR: Polygons do not intersect!");
return;
case PolyClipError.Poly1InsidePoly2:
WriteMessage("Polygon 1 completely inside polygon 2.");
return;
case PolyClipError.InfiniteLoop:
WriteMessage("Infinite Loop detected.");
break;
case PolyClipError.None:
WriteMessage("No errors with subtraction.");
break;
}
SetResult(subtract);
}
private void DoUnion()
{
// Do the union
PolyClipError error;
Vertices vertices = TraceClipper.Union(_left, _right, out error);
// Check for errors.
switch (error)
{
case PolyClipError.NoIntersections:
WriteMessage("ERROR: Polygons do not intersect!");
return;
case PolyClipError.Poly1InsidePoly2:
WriteMessage("Polygon 1 completely inside polygon 2.");
return;
case PolyClipError.InfiniteLoop:
WriteMessage("Infinite Loop detected.");
break;
case PolyClipError.None:
WriteMessage("No errors with union.");
break;
}
SetResult(vertices);
}
