protected virtual List <GeneralPolygon2d> make_solid(GeneralPolygon2d poly, bool bIsSupportSolid)
{
// always do a self-union of outer polygon. This allows Clipper to clean up many
// problems in input polygons, eg self-intersections and other junk
GeneralPolygon2d gouter = new GeneralPolygon2d(poly.Outer);
List <GeneralPolygon2d> resolvedSolid =
ClipperUtil.Union(gouter, gouter, MIN_AREA);
// solid may contain overlapping holes. We need to resolve these before continuing,
// otherwise those overlapping regions will be filled by Clipper even/odd rules
foreach (Polygon2d hole in poly.Holes)
{
GeneralPolygon2d holePoly = new GeneralPolygon2d(hole);
resolvedSolid = ClipperUtil.PolygonBoolean(resolvedSolid, holePoly, ClipperUtil.BooleanOp.Difference, MIN_AREA);
}
if (bIsSupportSolid == false && Thickened != null)
{
// Subtract away any clearance solids
foreach (var pair in Thickened)
{
if (pair.Key != poly)
{
resolvedSolid = ClipperUtil.Difference(resolvedSolid, pair.Value);
}
}
}
return(filter_solids(resolvedSolid));
}
virtual protected void cache_brim_polys()
{
combined_solid = new List <GeneralPolygon2d>();
combined_support = new List <GeneralPolygon2d>();
subtract = new List <GeneralPolygon2d>();
Frame3f cutPlane = new Frame3f((float)layer_height * 0.5f * Vector3f.AxisY, Vector3f.AxisY);
foreach (var so in CC.Objects.PrintMeshes)
{
if (so.Settings.ObjectType == PrintMeshSettings.ObjectTypes.Ignored)
{
continue;
}
SOSectionPlane section = new SOSectionPlane(so);
section.UpdateSection(cutPlane, CoordSpace.SceneCoords);
List <GeneralPolygon2d> solids = section.GetSolids();
// [TODO] should subtract holes explicitly here, like we do in slicer?
if (so.Settings.ObjectType == PrintMeshSettings.ObjectTypes.Cavity)
{
subtract = ClipperUtil.Union(solids, subtract);
}
else if (so.Settings.ObjectType == PrintMeshSettings.ObjectTypes.Support)
{
combined_support = ClipperUtil.Union(solids, combined_support);
}
else if (so.Settings.ObjectType == PrintMeshSettings.ObjectTypes.Solid)
{
combined_solid = ClipperUtil.Union(solids, combined_solid);
}
}
if (subtract.Count > 0)
{
combined_solid = ClipperUtil.Difference(combined_solid, subtract);
}
combined_all = ClipperUtil.Union(combined_solid, combined_support);
combined_all = CurveUtils2.FilterDegenerate(combined_all, 0.001);
foreach (var poly in combined_all)
{
poly.Simplify(path_width * 0.02);
}
}
