Combine multiple regions and use the 'Union' command to merge them all at once

artillis_prado — Thu, 20 Jun 2024 19:58:51 GMT

In civil engineering, I have a quantity that can vary from 4,000 to 13,000 Regions to unite. I've already tested it with the command that adds one by one, but it takes a lot of time. Using this option, I can select several elements of the project and unite everything in one second. I would like to know if anyone has used this Union via .NET C# to add a set of elements.

Re: Combine multiple regions and use the 'Union' command to merge them all at once

_gile — Thu, 20 Jun 2024 21:21:57 GMT

Hi,

From the tests I did calling the UNION comand (directly or from code) is not faster than calling the Region.BooleanOperation.

[CommandMethod("TEST1")] public void Test1() { var doc = Application.DocumentManager.MdiActiveDocument; var db = doc.Database; var ed = doc.Editor; var filter = new SelectionFilter(new[] { new TypedValue(0, "REGION") }); var selection = ed.GetSelection(filter); if (selection.Status == PromptStatus.OK) { var stopwatch = new Stopwatch(); stopwatch.Start(); using (var tr = db.TransactionManager.StartTransaction()) { selection.Value.GetObjectIds() .Select (id => (Region)tr.GetObject(id, OpenMode.ForWrite)) .Aggregate((r1, r2) => { r1.BooleanOperation(BooleanOperationType.BoolUnite, r2); return r1; }); tr.Commit(); } stopwatch.Stop(); ed.WriteMessage($"\nElapsed millisecond: {stopwatch.ElapsedMilliseconds} to union {selection.Value.Count} regions."); } } [CommandMethod("TEST2")] public void Test2() { var doc = Application.DocumentManager.MdiActiveDocument; var db = doc.Database; var ed = doc.Editor; var filter = new SelectionFilter(new[] { new TypedValue(0, "REGION") }); var selection = ed.GetSelection(filter); if (selection.Status == PromptStatus.OK) { var stopwatch = new Stopwatch(); stopwatch.Start(); ed.Command("_.UNION", selection.Value, ""); stopwatch.Stop(); ed.WriteMessage($"\nElapsed millisecond: {stopwatch.ElapsedMilliseconds} to union {selection.Value.Count} regions."); } }

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Combine multiple regions and use the 'Union' command to merge them all at once

Re: Combine multiple regions and use the 'Union' command to merge them all at once