public LwPolyline(netDxf.Entities.LwPolyline inputLwPolyline)
{
InputLwPolyline = inputLwPolyline;
//for (int i = 1; i < InputLwPolyline.Vertexes.Count; i++)
//{
// LinesOrArcsCollection.Add(new Line(InputLwPolyline.Vertexes[i - 1], InputLwPolyline.Vertexes[i]));
//}
var temp = InputLwPolyline.Explode();
foreach (var item in temp)
{
if (item.GetType() == typeof(netDxf.Entities.Line))
{
LinesOrArcsCollection.Add(new Line((netDxf.Entities.Line)item));
}
else if (item.GetType() == typeof(netDxf.Entities.Arc))
{
LinesOrArcsCollection.Add(new Arc((netDxf.Entities.Arc)item));
}
}
foreach (var item in LinesOrArcsCollection)
{
CheckIfNewPointExtendArea(item.MaxXMaxY);
CheckIfNewPointExtendArea(item.MinXMinY);
Length += item.Length;
}
}
private void SetInternalInfo(IEnumerable <EntityObject> entities)
{
bool containsClosedPolyline = false;
this.edges.Clear();
foreach (EntityObject entity in entities)
{
if (containsClosedPolyline)
{
throw new ArgumentException("Closed polylines cannot be combined with other entities to make a hatch boundary path.");
}
// it seems that AutoCad does not have problems on creating loops that theoretically does not make sense, like, for example an internal loop that is made of a single arc.
// so if AutoCAD is OK with that I am too, the program that make use of this information will take care of this inconsistencies
switch (entity.Type)
{
case EntityType.Arc:
this.edges.Add(Arc.ConvertFrom(entity));
break;
case EntityType.Circle:
this.edges.Add(Arc.ConvertFrom(entity));
break;
case EntityType.Ellipse:
this.edges.Add(Ellipse.ConvertFrom(entity));
break;
case EntityType.Line:
this.edges.Add(Line.ConvertFrom(entity));
break;
case EntityType.LightWeightPolyline:
LwPolyline poly = (LwPolyline)entity;
if (poly.IsClosed)
{
if (this.edges.Count != 0)
{
throw new ArgumentException("Closed polylines cannot be combined with other entities to make a hatch boundary path.");
}
this.edges.Add(Polyline.ConvertFrom(entity)); // A polyline HatchBoundaryPath must be closed
this.pathType |= HatchBoundaryPathTypeFlags.Polyline;
containsClosedPolyline = true;
}
else
{
this.SetInternalInfo(poly.Explode()); // open polylines will always be exploded, only one polyline can be present in a path
}
break;
case EntityType.Spline:
this.edges.Add(Spline.ConvertFrom(entity));
break;
default:
throw new ArgumentException(string.Format("The entity type {0} cannot be part of a hatch boundary.", entity.Type));
}
}
}
private static void ExplodeTest()
{
DxfDocument dxf = new DxfDocument();
//polyline
LwPolylineVertex polyVertex;
List<LwPolylineVertex> polyVertexes = new List<LwPolylineVertex>();
polyVertex = new LwPolylineVertex(new Vector2(-50, -23.5));
polyVertex.Bulge = 1.33;
polyVertexes.Add(polyVertex);
polyVertex = new LwPolylineVertex(new Vector2(34.8, -42.7));
polyVertexes.Add(polyVertex);
polyVertex = new LwPolylineVertex(new Vector2(65.3, 54.7));
polyVertex.Bulge = -0.47;
polyVertexes.Add(polyVertex);
polyVertex = new LwPolylineVertex(new Vector2(-48.2, 42.5));
polyVertexes.Add(polyVertex);
LwPolyline polyline2d = new LwPolyline(polyVertexes);
polyline2d.Layer = new Layer("polyline2d");
polyline2d.Layer.Color.Index = 5;
polyline2d.Normal = new Vector3(1, 1, 1);
polyline2d.Elevation = 100.0f;
dxf.AddEntity(polyline2d);
dxf.AddEntity(polyline2d.Explode());
dxf.Save("explode.dxf");
}
