public ILineString ReadLineString(Transaction tr, Polyline3d polyline3D)
{
var coordinateList = new CoordinateList();
if (polyline3D.PolyType == Poly3dType.SimplePoly) // 0??
{
foreach (var v in polyline3D)
{
PolylineVertex3d vertex = null;
if (v is ObjectId)
{
vertex = tr.GetObject((ObjectId)v, OpenMode.ForRead) as PolylineVertex3d;
}
else if (v is PolylineVertex3d)
{
vertex = (PolylineVertex3d)v;
}
if (vertex != null)
{
coordinateList.Add(this.ReadCoordinate(vertex.Position), this.AllowRepeatedCoordinates);
}
}
}
else
{
var dBObjectCollection = new DBObjectCollection();
polyline3D.Explode(dBObjectCollection);
try
{
foreach (var dBObject in dBObjectCollection)
{
var line = (Line)dBObject;
coordinateList.Add(this.ReadCoordinate(line.StartPoint), false);
coordinateList.Add(this.ReadCoordinate(line.EndPoint), false);
}
}
finally
{
foreach (var dBObject in dBObjectCollection)
{
if (dBObject is IDisposable)
{
(dBObject as IDisposable).Dispose();
}
}
}
dBObjectCollection.Dispose();
}
if (polyline3D.Closed)
{
coordinateList.Add(coordinateList[0]);
}
if (coordinateList.Count > 1)
{
return(this.GeometryFactory.CreateLineString(coordinateList.ToCoordinateArray()));
}
return(LineString.Empty);
}
/// <summary>
/// Extract the points of a Polyline3d
/// </summary>
/// <param name="aPolyline"></param>
/// <returns>Point3dCollection</returns>
public static Point3dCollection GetPointsFromPolyline(Polyline3d aPolyline)
{
var polyPts = new Point3dCollection();
var polySegments = new DBObjectCollection();
aPolyline.Explode(polySegments);
// Cycle through the segments
for (var i = 0; i <= polySegments.Count - 1; i++)
{
// if segment is Line
var line = polySegments[i] as Line;
if (line != null)
{
var tempLine = line;
polyPts.Add(new Point3d(tempLine.StartPoint.X, tempLine.StartPoint.Y, tempLine.StartPoint.Z));
polyPts.Add(new Point3d(tempLine.EndPoint.X, tempLine.EndPoint.Y, tempLine.EndPoint.Z));
}
// else if segment is Arc
else
{
var arc = polySegments[i] as Arc;
if (arc != null)
{
var tempArc = arc;
polyPts.Add(new Point3d(tempArc.StartPoint.X, tempArc.StartPoint.Y, tempArc.StartPoint.Z));
polyPts.Add(new Point3d(tempArc.EndPoint.X, tempArc.EndPoint.Y, tempArc.EndPoint.Z));
}
// else is something else - this must never happen
else
{
throw new Exception(
"KojtoCAD Error - Can not find the type of this polyline segment. Not Arc nor Line.");
}
}
}
RemoveDuplicate(polyPts);
return(polyPts);
}
