public static List <Polygons> CreateLayerOutlines(this Polygons polygons, LayerOpperation opperation)
{
List <Polygons> ret = new List <Polygons>();
Clipper clipper = new Clipper();
PolyTree resultPolyTree = new PolyTree();
clipper.AddPaths(polygons, PolyType.ptSubject, true);
if (opperation == LayerOpperation.UnionAll)
{
clipper.Execute(ClipType.ctUnion, resultPolyTree, PolyFillType.pftNonZero, PolyFillType.pftNonZero);
}
else
{
clipper.Execute(ClipType.ctUnion, resultPolyTree);
}
polygons._processPolyTreeNode(resultPolyTree, ret);
return(ret);
}
public static List<Polygons> CreateLayerOutlines(this Polygons polygons, LayerOpperation opperation)
{
List<Polygons> ret = new List<Polygons>();
Clipper clipper = new Clipper();
PolyTree resultPolyTree = new PolyTree();
clipper.AddPaths(polygons, PolyType.ptSubject, true);
if (opperation == LayerOpperation.UnionAll)
{
clipper.Execute(ClipType.ctUnion, resultPolyTree, PolyFillType.pftNonZero, PolyFillType.pftNonZero);
}
else
{
clipper.Execute(ClipType.ctUnion, resultPolyTree);
}
polygons._processPolyTreeNode(resultPolyTree, ret);
return ret;
}
