public void Visit(AcDbPolyline polyline)
{
Point2D from;
from.X = polyline.Points[0].X;
from.Y = polyline.Points[0].Y;
for (int i = 1; i < polyline.Points.Length; i++)
{
Line newline = new Line();
newline.StartPoint = from;
Point2D to;
to.X = polyline.Points[i].X;
to.Y = polyline.Points[i].Y;
newline.EndPoint = to;
_entities.AddLast(newline);
from = to;
}
if (polyline.Closed)
{
Line newline = new Line();
newline.StartPoint = from;
newline.EndPoint.X = polyline.Points[0].X;
newline.EndPoint.Y = polyline.Points[0].Y;
_entities.AddLast(newline);
}
}
public static LinkedList <AcDbEntity> Load(TextReader reader)
{
LinkedList <AcDbEntity> result = new LinkedList <AcDbEntity>();
State state = State.Start;
AcDbEntity entity = null;
DxfReader rdr = new DxfReader(reader);
while (!rdr.IsEof)
{
DxfNode node = rdr.Read();
if (state == State.Start || node.TypeCode == 0)
{
// завершаем текущее состояние
if (state != State.Start && node.TypeCode == 0)
{
state = State.Start;
}
if (node.TypeCode == 0)
{
switch ((string)node.Value)
{
case "LWPOLYLINE":
entity = new AcDbPolyline();
result.AddLast(entity);
state = State.Entity;
break;
case "LINE":
entity = new AcDbLine();
result.AddLast(entity);
state = State.Entity;
break;
case "CIRCLE":
entity = new AcDbCircle();
result.AddLast(entity);
state = State.Entity;
break;
case "ARC":
entity = new AcDbArc();
result.AddLast(entity);
state = State.Entity;
break;
}
}
}
else if (state == State.Entity)
{
entity.TakeNode(node);
}
}
return(result);
}
