public static Line GetUnionLine([NotNull] this List <Line> lines)
{
using var wasteLines = new DisposableSet <Line>();
Line prew = null !;
Line?unionLine = null;
foreach (var l in lines)
{
if (prew == null)
{
prew = l;
continue;
}
var line = prew.GetUnionLine(l);
wasteLines.Add(line);
unionLine = prew;
prew = line;
}
if (unionLine == null)
{
return((Line)prew.Clone());
}
wasteLines.Remove(prew);
return(prew);
}
private static Region GetRegion([NotNull] IEnumerable <Curve> pls)
{
using (var regions = new DisposableSet <Region>(pls.CreateRegion()))
{
var reg = regions.Skip(1).Any() ? regions.ToList().UnionRegions() : regions.First();
regions.Remove(reg);
return(reg);
}
}
public static Hatch?CreateHatch(this Region region, bool createOut, out DisposableSet <Polyline>?externalLoops)
{
externalLoops = createOut ? new DisposableSet <Polyline>() : null;
var plsByLoop = region.GetPoints2dByLoopType();
var extLoops = plsByLoop.Where(p => p.Value != BrepLoopType.LoopInterior).ToList();
var intLoops = plsByLoop.Where(p => p.Value == BrepLoopType.LoopInterior).ToList();
if (!extLoops.Any())
{
return(null);
}
var h = new Hatch();
h.SetHatchPattern(HatchPatternType.PreDefined, "SOLID");
foreach (var item in extLoops)
{
var pts2dCol = item.Key;
pts2dCol.Add(item.Key[0]);
h.AppendLoop(HatchLoopTypes.External, pts2dCol, new DoubleCollection(new double[extLoops.Count + 1]));
if (createOut)
{
externalLoops !.Add(pts2dCol.Cast <Point2d>().ToList().CreatePolyline());
}
}
if (intLoops.Any())
{
foreach (var item in intLoops)
{
var pts2dCol = item.Key;
pts2dCol.Add(item.Key[0]);
h.AppendLoop(HatchLoopTypes.SelfIntersecting, pts2dCol, new DoubleCollection(new double[intLoops.Count + 1]));
}
}
h.EvaluateHatch(true);
return(h);
}
public static void FlickObjectHighlight(
[CanBeNull] this List <ObjectId> ids,
int num = 2,
int delay1 = 50,
int delay2 = 50)
{
if (ids?.Any() != true)
{
return;
}
var doc = Application.DocumentManager.MdiActiveDocument;
using (var ents = new DisposableSet <Entity>(ids.Select(s => (Entity)s.Open(OpenMode.ForRead))))
{
for (var i = 0; i < num; i++)
{
// Highlight entity
foreach (var entity in ents)
{
entity.Highlight();
}
doc.Editor.UpdateScreen();
// Wait for delay1 msecs
Thread.Sleep(delay1);
// Unhighlight entity
foreach (var entity in ents)
{
entity.Unhighlight();
}
doc.Editor.UpdateScreen();
// Wait for delay2 msecs
Thread.Sleep(delay2);
}
}
}