//--------------------------------------------------------------------------------------------------
void _ImportEllipse(DxfDomEllipse dxfEllipse)
{
var centerPoint = dxfEllipse.CenterPoint;
var majorRimPoint = centerPoint.Translated(dxfEllipse.MajorAxisPointOffset.ToVec());
var minorRimPoint = centerPoint.Translated(dxfEllipse.MajorAxisPointOffset.ToVec().Rotated(90.0.ToRad()).Scaled(dxfEllipse.Ratio));
var centerIndex = _AddPoint(centerPoint, false);
var majorRimIndex = _AddPoint(majorRimPoint, false);
var minorRimIndex = _AddPoint(minorRimPoint, false);
if (majorRimIndex != minorRimIndex)
{
_Segments.Add(new SketchSegmentEllipse(centerIndex, majorRimIndex, minorRimIndex));
}
}
//--------------------------------------------------------------------------------------------------
void _ImportEllipticalArc(DxfDomEllipse dxfEllipse)
{
var centerPoint = dxfEllipse.CenterPoint;
var majorRimPoint = centerPoint.Translated(dxfEllipse.MajorAxisPointOffset.ToVec());
var minorRimPoint = centerPoint.Translated(dxfEllipse.MajorAxisPointOffset.ToVec().Rotated(90.0.ToRad()).Scaled(dxfEllipse.Ratio));
var ellipse = Geom2dUtils.MakeEllipse(centerPoint, majorRimPoint, minorRimPoint);
var bezierPointArray = Geom2dUtils.EllipticalArcToBezier(ellipse, dxfEllipse.StartParameter, dxfEllipse.EndParameter);
foreach (var bezierPoints in bezierPointArray)
{
var startPoint = _AddPoint(bezierPoints.p1);
var endPoint = _AddPoint(bezierPoints.p2);
_Segments.Add(new SketchSegmentBezier(startPoint, _AddPoint(bezierPoints.c1, false), _AddPoint(bezierPoints.c2, false), endPoint));
}
}
//--------------------------------------------------------------------------------------------------
void _AddEllipseSegment(SketchSegmentEllipse ellipseSegment)
{
var ellipse = ellipseSegment.GetEllipse(_Sketch.Points);
if (_Document.Flags.HasFlag(DxfFlags.ExportEllipseAsPolygon))
{
_AddPolygonCurve(new Geom2d_Ellipse(ellipse));
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);
_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);
}
//--------------------------------------------------------------------------------------------------
void IDrawingRenderer.Ellipse(Pnt2d center, double majorRadius, double minorRadius, double rotation, double startAngle, double endAngle)
{
if (startAngle > endAngle)
{
startAngle.Swap(ref endAngle);
}
if (_Document.Flags.HasFlag(DxfFlags.ExportEllipseAsPolygon))
{
Geom2d_Ellipse geom2DEllipse = new(new Ax2d(center, Dir2d.DX.Rotated(-rotation)), majorRadius, minorRadius);
if (startAngle.Distance(endAngle).IsEqual(Maths.DoublePI, 0.00001))
{
// Full ellipse
_AddPolygonCurve(geom2DEllipse);
}
else
{
// Elliptical arc
_AddPolygonCurve(new Geom2d_TrimmedCurve(geom2DEllipse, startAngle, endAngle));
}
return;
}
var majorAxisPointOffset = Dir2d.DX.ToVec().Rotated(-rotation).Multiplied(majorRadius);
var ratio = minorRadius / majorRadius;
if (startAngle.Distance(endAngle).IsEqual(Maths.DoublePI, 0.00001))
{
// Full ellipse
var entity = new DxfDomEllipse(_CurrentLayerName, center, majorAxisPointOffset.ToPnt(), ratio);
_AddEntity(entity);
}
else
{
// Elliptical arc
var entity = new DxfDomEllipse(_CurrentLayerName, center, majorAxisPointOffset.ToPnt(), ratio, startAngle, endAngle);
_AddEntity(entity);
}
}