public static Loop getBoundary(TBPLineSegment startSeg, object userData)
{
Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;
Loop resultLoop = new Loop();
resultLoop.userData = userData;
List <LoopSeg> loopSegs = resultLoop.segments;
//result2 = new List<Point3d>();
//result.Add(startSeg);
double scanAngle = 0;
TBPLineSegment previousSeg = startSeg;
TBPoint startPoint;
TBPoint nextp = startSeg.nextPoint(out startPoint);
if (nextp == null)
{
return(null);
}
scanAngle += startSeg.scanAngle(startPoint);
//result2.Add(startPoint.acPoint);
loopSegs.Add(new LoopSeg(startSeg, startPoint));
resultLoop.startPoint = startPoint;
while (nextp != null)
{
TBPLineSegment nextSeg = nextp.nextSegment(previousSeg);
if (nextSeg == startSeg)
{
throw new System.Exception("TraceBoundary 39");
}
scanAngle += nextSeg.scanAngle(nextp);
scanAngle += previousSeg.scanAngle(nextSeg, nextp);
loopSegs.Add(new LoopSeg(nextSeg, nextp));
nextp = nextSeg.nextPoint(nextp);
if (nextp == null)
{
return(null);
//throw new System.Exception("TraceBoundary 44");
}
previousSeg = nextSeg;
if (nextp == startPoint)
{
scanAngle += previousSeg.scanAngle(startSeg, startPoint);
break;
}
}
resultLoop.scanAngle = scanAngle;
if (resultLoop.segments.Count <= 1)
{
}
if (scanAngle <= 0)
{
ed.WriteMessage("\nangle:" + scanAngle + "\n" + startSeg.toString());
}
return(resultLoop);
}
public double scanAngle(TBPoint startp)
{//闭合情况下，没有计算末尾到开始的角度
if (startp == this.StartPoint)
{
return(this.scanAngle());
}
else if (startp == this.EndPoint)
{
TBPLineSegment reverse = this.newReverse();
return(reverse.scanAngle());
}
else
{
throw new System.Exception("TBPLineSegment 69");
}
}