private static List <Polyline> TrimDifferenceByCore(List <Polyline> difference, Polyline coreUnion)
{
List <Polyline> pureOutline = new List <Polyline>();
foreach (Polyline i in difference)
{
PolylineTools.SetPolylineAlignCCW(i);
List <Polyline> tempTrimmed = RemoveOverlapSeg(i, coreUnion);
pureOutline.AddRange(tempTrimmed);
}
return(pureOutline);
}
private static List <Polyline> TrimDifferenceByOutline(List <Polyline> difference, Polyline outline)
{
List <Polyline> pureCore = new List <Polyline>();
foreach (Polyline i in difference)
{
PolylineTools.SetPolylineAlignCCW(i);
List <Polyline> tempTrimmed = RemoveOverlapSeg(i, outline);
pureCore.AddRange(tempTrimmed);
}
foreach (Polyline i in pureCore)
{
if (i.IsClosed)
{
PolylineTools.SetPolylineAlignCW(i);
}
}
return(pureCore);
}