//--------------------------------------------------------------------------------------------------
void _ImportLwPolyline(DxfDomLwPolyline dxfPolyline)
{
if (dxfPolyline.Points.Length == 0)
{
return;
}
var startIndex = _AddPoint(dxfPolyline.Points[0]);
for (int i = 1; i < dxfPolyline.Points.Length; i++)
{
var endIndex = _AddPoint(dxfPolyline.Points[i]);
_Segments.Add(new SketchSegmentLine(startIndex, endIndex));
startIndex = endIndex;
}
}
//--------------------------------------------------------------------------------------------------
void _AddPolygonCurve(Geom2d_Curve curve)
{
var converter = new Geom2dConvert_ApproxCurve(curve, _Precision, GeomAbs_Shape.GeomAbs_C0, 500, 1);
if (!(converter.IsDone() && converter.HasResult()))
{
Messages.Error($"Cannot tesselate curve to polyline.");
return;
}
var approx = converter.Curve();
var points = new Pnt2d[approx.NbPoles()];
for (int i = 0; i < points.Length; i++)
{
points[i] = approx.Pole(i + 1);
}
var entity = new DxfDomLwPolyline("0", points);
_Document.Entities.Add(entity);
}
//--------------------------------------------------------------------------------------------------
void _ReadEntities(DxfReader reader)
{
while (reader.GroupCode >= 0)
{
if (reader.GroupCode != 0)
{
reader.Skip();
continue;
}
var type = reader.ReadString()?.ToUpper();
if (type == null)
{
continue;
}
DxfDomEntity entity = null;
switch (type)
{
case "ENDSEC":
return;
case "LINE":
entity = new DxfDomLine();
break;
case "CIRCLE":
case "ARC":
entity = new DxfDomCircle();
break;
case "ELLIPSE":
entity = new DxfDomEllipse();
break;
case "LWPOLYLINE":
entity = new DxfDomLwPolyline();
break;
case "POLYLINE":
entity = new DxfDomPolyline();
break;
case "SPLINE":
entity = new DxfDomSpline();
break;
}
if (entity == null)
{
continue;
}
if (entity.Read(reader))
{
Entities.Add(entity);
}
else
{
Messages.Error($"DxfReader: Incomplete entity description at line {reader.Line}.");
}
}
}