//--------------------------------------------------------------------------------------------------
MemoryStream _Export(Drawing drawing, DxfVersion version, DxfFlags flags, double precision)
{
_Precision = precision;
_Document = new DxfDomDocument(version, flags);
// Export
drawing.Render(this);
var stream = _Document.WriteToStream();
_Document = null;
return(stream);
}
//--------------------------------------------------------------------------------------------------
MemoryStream _Export(Sketch sketch, DxfVersion version, DxfFlags flags, double precision)
{
_Sketch = sketch;
_Precision = precision;
_Document = new DxfDomDocument(version, flags);
foreach (var segment in _Sketch.Segments.Values)
{
switch (segment)
{
case SketchSegmentLine line:
_AddLineSegment(line);
break;
case SketchSegmentCircle circle:
_AddCircleSegment(circle);
break;
case SketchSegmentArc arc:
_AddArcSegment(arc);
break;
case SketchSegmentEllipse ellipse:
_AddEllipseSegment(ellipse);
break;
case SketchSegmentEllipticalArc ellipArc:
_AddEllipticalArcSegment(ellipArc);
break;
case SketchSegmentBezier bezier:
_AddBezierSegment(bezier);
break;
}
}
var stream = _Document.WriteToStream();
_Document = null;
return(stream);
}
//--------------------------------------------------------------------------------------------------
#endregion
#region Importer
bool _Import(Stream stream, out IDictionary <int, Pnt2d> points, out IDictionary <int, SketchSegment> segments,
DxfFlags flags, double precision, double scale)
{
points = null;
segments = null;
try
{
_MergePrecision = precision;
_Document = new DxfDomDocument(DxfVersion.Latest, flags);
if (!_Document.ReadFromStream(stream, scale))
{
Messages.Error("DxfImporter: The DXF document is invalid or does not contain any importable entities.");
_Document = null;
return(false);
}
// Iterate through children
foreach (var entity in _Document.Entities)
{
_ImportEntity(entity);
}
if (_Segments.Count == 0)
{
Messages.Error("DxfImporter: Could not find any usable elements in DXF data.");
return(false);
}
points = _Points;
segments = _Segments.ToIndexedDictionary();
return(true);
}
catch (Exception e)
{
Messages.Exception("DxfImporter: An exception occured while importing the dxf file.", e);
return(false);
}
}