protected virtual List <PolyLine2d> ApplyValidRegions(List <PolyLine2d> plinesIn)
{
if (ValidRegions == null || ValidRegions.Count == 0)
{
return(plinesIn);
}
List <PolyLine2d> clipped = new List <PolyLine2d>();
foreach (var pline in plinesIn)
{
clipped.AddRange(ClipperUtil.ClipAgainstPolygon(ValidRegions, pline, true));
}
return(clipped);
}
/// <summary>
/// Convert assembly of polygons, polylines, etc, into a set of printable solids and paths
/// </summary>
public virtual void Resolve()
{
// combine solids, process largest-to-smallest
if (InputSolids.Count > 0)
{
GeneralPolygon2d[] solids = InputSolids.ToArray();
solids = process_input_polys_before_sort(solids);
// sort by decreasing weight
double[] weights = new double[solids.Length];
for (int i = 0; i < solids.Length; ++i)
{
weights[i] = sorting_weight(solids[i]);
}
Array.Sort(weights, solids); Array.Reverse(solids);
solids = process_input_polys_after_sort(solids);
Solids = new List <GeneralPolygon2d>();
for (int k = 0; k < solids.Length; ++k)
{
// convert this polygon into the solid we want to use
List <GeneralPolygon2d> resolvedSolid = make_solid(solids[k], false);
// now union in with accumulated solids
if (Solids.Count == 0)
{
Solids.AddRange(resolvedSolid);
}
else
{
Solids = combine_solids(Solids, resolvedSolid);
}
}
}
// subtract input cavities
foreach (var cavity in InputCavities)
{
Solids = remove_cavity(Solids, cavity);
}
// subtract thickened embedded paths from solids
if (EmbeddedPaths.Count > 0 && EmbeddedPathWidth == 0)
{
throw new Exception("PlanarSlice.Resolve: must set embedded path width!");
}
foreach (var path in EmbeddedPaths)
{
Polygon2d thick_path = make_thickened_path(path, EmbeddedPathWidth);
Solids = ClipperUtil.Difference(Solids, new GeneralPolygon2d(thick_path), MIN_AREA);
Paths.Add(path);
}
// cleanup
Solids = filter_solids(Solids);
// subtract solids from clipped paths
foreach (var path in ClippedPaths)
{
List <PolyLine2d> clipped = ClipperUtil.ClipAgainstPolygon(Solids, path);
foreach (var cp in clipped)
{
Paths.Add(cp);
}
}
// combine support solids, while also subtracting print solids and thickened paths
if (InputSupportSolids.Count > 0)
{
// make assembly of path solids
// [TODO] do we need to boolean these?
List <GeneralPolygon2d> path_solids = null;
if (Paths.Count > 0)
{
path_solids = new List <GeneralPolygon2d>();
foreach (var path in Paths)
{
path_solids.Add(new GeneralPolygon2d(make_thickened_path(path, EmbeddedPathWidth)));
}
}
foreach (var solid in InputSupportSolids)
{
// convert this polygon into the solid we want to use
List <GeneralPolygon2d> resolved = make_solid(solid, true);
// now subtract print solids
resolved = ClipperUtil.PolygonBoolean(resolved, Solids, ClipperUtil.BooleanOp.Difference, MIN_AREA);
// now subtract paths
if (path_solids != null)
{
resolved = ClipperUtil.PolygonBoolean(resolved, path_solids, ClipperUtil.BooleanOp.Difference, MIN_AREA);
}
// now union in with accumulated support solids
if (SupportSolids.Count == 0)
{
SupportSolids.AddRange(resolved);
}
else
{
SupportSolids = ClipperUtil.PolygonBoolean(SupportSolids, resolved, ClipperUtil.BooleanOp.Union, MIN_AREA);
}
}
SupportSolids = filter_solids(SupportSolids);
}
// apply crop regions
if (InputCropRegions.Count > 0)
{
// combine crop regions
var CropRegions = make_solid(InputCropRegions[0], false);
for (int k = 1; k < InputCropRegions.Count; ++k)
{
CropRegions = combine_solids(CropRegions, make_solid(InputCropRegions[k], false));
}
Solids = ClipperUtil.Intersection(CropRegions, Solids, MIN_AREA);
Solids = filter_solids(Solids);
List <PolyLine2d> cropped_paths = new List <PolyLine2d>();
foreach (var path in Paths)
{
cropped_paths.AddRange(ClipperUtil.ClipAgainstPolygon(CropRegions, path, true));
}
// TODO: filter paths
SupportSolids = ClipperUtil.Intersection(CropRegions, SupportSolids, MIN_AREA);
SupportSolids = filter_solids(SupportSolids);
}
}
