//--------------------------------------------------------------------------------------------------
void _AddBezierCurve(Geom2d_BezierCurve geom2DBezier, double firstParameter, double lastParameter)
{
int p1, p2, p3, p4;
switch (geom2DBezier.Degree())
{
case 1:
p1 = _AddPoint(geom2DBezier.StartPoint());
p2 = _AddPoint(geom2DBezier.EndPoint());
_Segments.Add(new SketchSegmentLine(p1, p2));
break;
case 2:
p1 = _AddPoint(geom2DBezier.StartPoint());
p2 = _AddPoint(geom2DBezier.Pole(2), false);
p3 = _AddPoint(geom2DBezier.EndPoint());
_Segments.Add(new SketchSegmentBezier(p1, p2, p3));
break;
case 3:
p1 = _AddPoint(geom2DBezier.StartPoint());
p2 = _AddPoint(geom2DBezier.Pole(2), false);
p3 = _AddPoint(geom2DBezier.Pole(3), false);
p4 = _AddPoint(geom2DBezier.EndPoint());
_Segments.Add(new SketchSegmentBezier(p1, p2, p3, p4));
break;
default:
// Try to reduce the order of the curve
var continuity = geom2DBezier.Continuity();
if (continuity != GeomAbs_Shape.GeomAbs_C0)
{
continuity = GeomAbs_Shape.GeomAbs_C1;
}
var trimmedCurve = new Geom2d_TrimmedCurve(geom2DBezier, firstParameter, lastParameter);
var converter = new Geom2dConvert_ApproxCurve(trimmedCurve, 0.001 /*Precision.Confusion() * 10*/, continuity, 1000, 3);
if (!(converter.IsDone() && converter.HasResult()))
{
Messages.Warning("DxfImporter: Bezier curve has an undecreasable order of " + geom2DBezier.Degree() + ".");
return;
}
_AddBSplineCurve(converter.Curve());
break;
}
}
//--------------------------------------------------------------------------------------------------
void _AddEllipse(Geom2d_Ellipse ellipse, double first, double last)
{
if (_Document.Flags.HasFlag(DxfFlags.ExportEllipseAsPolygon))
{
if (Math.Abs(last - first) < ellipse.Period())
{
// Elliptical arc
var trimmedCurve = new Geom2d_TrimmedCurve(ellipse, first, last);
_AddPolygonCurve(trimmedCurve);
}
else
{
// Full ellipse
_AddPolygonCurve(ellipse);
}
return;
}
var center = ellipse.Location();
var majorAxisPointOffset = ellipse.XAxis().Direction.ToVec().Multiplied(ellipse.MajorRadius());
var ratio = ellipse.MinorRadius() / ellipse.MajorRadius();
if (Math.Abs(last - first) < ellipse.Period())
{
// Elliptical arc
if (ellipse.Position().Sense() > 0)
{
var temp = first;
first = ellipse.Period() - last;
last = ellipse.Period() - temp;
}
var entity = new DxfDomEllipse(_CurrentLayer, center, majorAxisPointOffset.ToPnt(), ratio, first, last);
_Document.Entities.Add(entity);
}
else
{
// Full ellipse
var entity = new DxfDomEllipse(_CurrentLayer, center, majorAxisPointOffset.ToPnt(), ratio);
_Document.Entities.Add(entity);
}
}
//--------------------------------------------------------------------------------------------------
void _AddEllipticalArcSegment(SketchSegmentEllipticalArc arcSegment)
{
var parameter = new double[2];
var ellipse = arcSegment.GetEllipse(_Sketch.Points, parameter);
if (_Document.Flags.HasFlag(DxfFlags.ExportEllipseAsPolygon))
{
var trimmedCurve = new Geom2d_TrimmedCurve(new Geom2d_Ellipse(ellipse), parameter[0], parameter[1]);
_AddPolygonCurve(trimmedCurve);
return;
}
var center = ellipse.Location();
var majorAxisPointOffset = ellipse.XAxis().Direction.ToVec().Multiplied(ellipse.MajorRadius()).ToPnt();
var ratio = ellipse.MinorRadius() / ellipse.MajorRadius();
var entity = new DxfDomEllipse("0", center, majorAxisPointOffset, ratio, parameter[0], parameter[1]);
_Document.Entities.Add(entity);
}
public void Init(Geom2d_TrimmedCurve b_isector)
{
throw new NotImplementedException();
}