public static List <Polyline> BooleanDifference(List <Curve> curves, List <Curve> cutters, double dist, double scale = 1e10)
{
//http://www.angusj.com/delphi/clipper/documentation/Docs/Overview/Example.htm
// A = NGonsCore.Geometry.Polyline3D.Boolean(ClipType.ctIntersection, polylines, cutters, Plane.WorldXY, 1 / 1e10, true);
List <Polyline> output = new List <Polyline>();
List <Polyline> cutters_ = CurvesToPolylines(cutters, dist);
List <Polyline> polylines_ = CurvesToPolylines(curves, dist);
Plane cutterPlane = new Plane();
Transform xform = Transform.PlaneToPlane(cutterPlane, Plane.WorldXY);
NGonsCore.Clipper642.Clipper clipper = new NGonsCore.Clipper642.Clipper();
var cutter = PolylineToIntPoints(cutters_, scale);
clipper.AddPaths(cutter, PolyType.ptClip, true);
var input = PolylineToIntPoints(polylines_, scale);
clipper.AddPaths(input, PolyType.ptSubject, true);
List <List <IntPoint> > solution = new List <List <IntPoint> >();
clipper.Execute(ClipType.ctDifference, solution);
List <Polyline> polys = IntPointToPolylines(solution, scale);
output.AddRange(polys);
return(output);
}
public static List <Polyline> Boolean(ClipType clipType, IEnumerable <Polyline> polyA, IEnumerable <Polyline> polyB,
Plane pln, double tolerance, bool evenOddFilling)
{
NGonsCore.Clipper642.Clipper clipper = new NGonsCore.Clipper642.Clipper();
PolyFillType polyfilltype = PolyFillType.pftEvenOdd;
if (!evenOddFilling)
{
polyfilltype = PolyFillType.pftNonZero;
}
foreach (Polyline plA in polyA)
{
clipper.AddPath(plA.ToPath2D(pln, tolerance), PolyType.ptSubject, plA.IsClosed);
}
foreach (Polyline plB in polyB)
{
clipper.AddPath(plB.ToPath2D(pln, tolerance), PolyType.ptClip, true);
}
PolyTree polytree = new PolyTree();
clipper.Execute(clipType, polytree, polyfilltype, polyfilltype);
List <Polyline> output = new List <Polyline>();
// ReSharper disable once LoopCanBeConvertedToQuery
foreach (PolyNode pn in polytree.Iterate())
{
if (pn.Contour.Count > 1)
{
output.Add(pn.Contour.ToPolyline(pln, tolerance, !pn.IsOpen));
}
}
return(output);
}
public static Tuple <List <Polyline>, List <Polyline>, List <Polyline> > BooleanIntersection(List <Curve> curves, List <Curve> cutters, double dist, double scale = 1e10)
{
//http://www.angusj.com/delphi/clipper/documentation/Docs/Overview/Example.htm
// A = NGonsCore.Geometry.Polyline3D.Boolean(ClipType.ctIntersection, polylines, cutters, Plane.WorldXY, 1 / 1e10, true);
//this.Component.Message = "Boolean Intersection";
List <Polyline> output = new List <Polyline>();
List <Polyline> cutters_ = CurvesToPolylines(cutters, dist);
List <Polyline> innerPolygons = new List <Polyline>();
List <Polyline> edgePolygons = new List <Polyline>();
List <Polyline> edgePolygons_ = new List <Polyline>();
for (int j = 0; j < curves.Count; j++)
{
Polyline polyline = CurveToPolyline(curves[j]);
NGonsCore.Clipper642.Clipper clipper = new NGonsCore.Clipper642.Clipper();
var cutter = PolylineToIntPoints(cutters_, scale);
clipper.AddPaths(cutter, PolyType.ptClip, true);
var input = PolylineToIntPoint(polyline, scale);
clipper.AddPath(input, PolyType.ptSubject, true);
/*
* foreach(IntPoint intpt in input){
* NGonsCore.Clipper642.Clipper.PointInPolygon(intpt, cutter);
* }
*/
List <List <IntPoint> > solution = new List <List <IntPoint> >();
clipper.Execute(ClipType.ctIntersection, solution);
solution = NGonsCore.Clipper642.Clipper.SimplifyPolygons(solution, PolyFillType.pftEvenOdd);
List <Polyline> polys = IntPointToPolylines(solution, scale);
output.AddRange(polys);
if (polys.Count > 0)
{
if (polys.Count == polyline.Count)
{
edgePolygons.AddRange(polys);
edgePolygons_.Add(polyline);
}
else
{
if (Math.Abs((polys[0].Length - polyline.Length)) < 0.01 && polys[0].Count == polyline.Count)
{
innerPolygons.Add(polys[0]);
//innerPolygons.Add(j);
}
else
{
edgePolygons.AddRange(polys);
edgePolygons_.Add(polyline);
// edgePolygons.Add(j);
}
}
}
}
//innerPolylines = innerPolygons;
//edgePolylinesCut = edgePolygons;
//edgePolylines = edgePolygons_;
// A = cutters_;
return(new Tuple <List <Polyline>, List <Polyline>, List <Polyline> >(innerPolygons, edgePolygons, edgePolygons_));
}