public static void TestSearchAllLoops()
{
var drawingDb = Application.DocumentManager.MdiActiveDocument.Database;
var editor = Application.DocumentManager.MdiActiveDocument.Editor;
editor.WriteMessage("\n选择一条或几条曲线：\n");
var result = editor.GetSelection();
if (result.Status != PromptStatus.OK)
{
return;
}
var polylineids = result.Value.GetObjectIds();
var polygons = MinimalLoopSearcher2.GetAllLoopPolylines(polylineids, editor.Document);
using (var transaction = drawingDb.TransactionManager.StartTransaction())
{
var modelspaceId = SymbolUtilityServices.GetBlockModelSpaceId(drawingDb);
var modelspace = transaction.GetObject(modelspaceId, OpenMode.ForWrite) as BlockTableRecord;
foreach (var polyline in polygons)
{
polyline.Color = Color.FromColorIndex(ColorMethod.ByAci, 3);
modelspace.AppendEntity(polyline);
transaction.AddNewlyCreatedDBObject(polyline, true);
}
transaction.Commit();
}
}
bool AnalyzePolygonsUnionable(List <Point3d> sourcePolygon, List <Point3d> targetPolygon,
out List <Point3d> unionPolygon)
{
unionPolygon = sourcePolygon;
var unionResult = MinimalLoopSearcher2.ClipperBoolean(new List <List <Point3d> >()
{
sourcePolygon
},
new List <List <Point3d> >()
{
targetPolygon
}, ClipType.ctUnion);
if (unionResult.Count > 1)
{
if (unionResult.Count == 2)
{
if ((PolygonIncludeSearcher.AreIdenticalCoordinates(sourcePolygon, unionResult[0]) ||
PolygonIncludeSearcher.AreIdenticalCoordinates(sourcePolygon, unionResult[1])))
{
return(false);
}
}
unionResult = unionResult
.OrderByDescending(it => ComputerGraphics.PolygonArea(it.ToArray()))
.ToList();
var source = new List <List <Point3d> >()
{
unionResult[0]
};
// 如果存在多于一个布尔运算结果的情况，需要分析他们是否有包含关系
for (int i = 1; i < unionResult.Count; i++)
{
var subUnionResult = MinimalLoopSearcher2.ClipperBoolean(
source, new List <List <Point3d> >()
{
unionResult[i]
}, ClipType.ctUnion);
if (subUnionResult.Count > 1 || subUnionResult.Count <= 0)
{
return(false);
}
source = subUnionResult;
}
unionResult = source;
}
if (unionResult.Count != 1)
{
return(false);
}
unionPolygon = unionResult[0];
return(true);
}
public static void TestSearchMinimumPolygons()
{
var drawingDb = Application.DocumentManager.MdiActiveDocument.Database;
var editor = Application.DocumentManager.MdiActiveDocument.Editor;
editor.WriteMessage("\n选择一条或几条闭合曲线：\n");
var result = editor.GetSelection();
if (result.Status != PromptStatus.OK)
{
return;
}
var polylineids = result.Value.GetObjectIds();
using (var tolerance = new SafeToleranceOverride(null, null))
using (var transaction = drawingDb.TransactionManager.StartTransaction())
{
var polylines = new List <Polyline>();
foreach (var polylineid in polylineids)
{
var polyline = transaction.GetObject(polylineid, OpenMode.ForRead) as Polyline;
polylines.Add(polyline.Clone() as Polyline);
}
Dictionary <Curve, List <Curve> > replaced = null;
var polygons = MinimalLoopSearcher2.SearchMinimalPolygons(polylines, out replaced);
var modelspaceId = SymbolUtilityServices.GetBlockModelSpaceId(drawingDb);
var modelspace = transaction.GetObject(modelspaceId, OpenMode.ForWrite) as BlockTableRecord;
foreach (var polyline in polygons)
{
polyline.Layer = "dk";
polyline.Color = Color.FromColorIndex(ColorMethod.ByAci, 3);
modelspace.AppendEntity(polyline);
transaction.AddNewlyCreatedDBObject(polyline, true);
}
transaction.Commit();
}
}
