//--------------------------------------------------------------------------------------------------
protected void AddEllipse(Geom2d_Ellipse geom2DEllipse, double first, double last, bool reverse)
{
if (Math.Abs(last - first) < geom2DEllipse.Period())
{
// Ellipse arc
var start = geom2DEllipse.Value(reverse ? last : first);
var end = geom2DEllipse.Value(reverse ? first : last);
// Add the midpoint seems to be the simplest way to improve the BB
BoundingBox?.Add(geom2DEllipse.Value(first + (last - first) / 2));
// Get parameters of ellipse
double radiusX = geom2DEllipse.MajorRadius();
double radiusY = geom2DEllipse.MinorRadius();
double angleX = Maths.NormalizeAngleDegree(geom2DEllipse.XAxis().Angle(Ax2d.OX).ToDeg());
double length = last - first;
double halfParameter = (geom2DEllipse.LastParameter() - geom2DEllipse.FirstParameter()) / 2.0;
var size = (length < halfParameter) ? SvgArcSize.Small : SvgArcSize.Large;
var sweep = geom2DEllipse.Position().Sense() > 0
? (reverse ? SvgArcSweep.Negative : SvgArcSweep.Positive)
: (reverse ? SvgArcSweep.Positive : SvgArcSweep.Negative);
AddToPath(new SvgPathSegArc(start, radiusX, radiusY, angleX, size, sweep, end));
}
else
{
// Complete ellipse
if (reverse)
{
geom2DEllipse = geom2DEllipse.Reversed() as Geom2d_Ellipse;
}
double rotationAngle = geom2DEllipse.XAxis().Angle(Ax2d.OX);
var segment = new SvgEllipseElement(geom2DEllipse.Location(), geom2DEllipse.MajorRadius(), geom2DEllipse.MinorRadius());
segment.Transforms.Add(new SvgRotateTransform(Maths.NormalizeAngleDegree(rotationAngle.ToDeg())));
CurrentGroup.Children.Add(segment);
// Enlarge BB
var f = geom2DEllipse.FirstParameter();
var q = (geom2DEllipse.LastParameter() - f) / 4;
BoundingBox?.Add(geom2DEllipse.Value(f));
BoundingBox?.Add(geom2DEllipse.Value(f + q));
BoundingBox?.Add(geom2DEllipse.Value(f + q * 2));
BoundingBox?.Add(geom2DEllipse.Value(f + q * 3));
}
}
//--------------------------------------------------------------------------------------------------
void _ImportEllipse(SvgEllipseElement ellipse)
{
var centerPoint = ellipse.Center;
var radiusX = ellipse.RadiusX;
var radiusY = ellipse.RadiusY;
if (radiusX <= 0 || radiusY <= 0)
{
return;
}
var rimPointX = ellipse.RimPointX;
var rimPointY = ellipse.RimPointY;
var centerIndex = _AddPoint(centerPoint);
var rimIndexX = _AddPoint(rimPointX);
var rimIndexY = _AddPoint(rimPointY);
_Segments.Add(new SketchSegmentEllipse(centerIndex, rimIndexX, rimIndexY));
}
//--------------------------------------------------------------------------------------------------
void _AddUnconnectableSegment(SketchSegment sketchSegment)
{
if (sketchSegment is SketchSegmentCircle)
{
var sketchCircle = (SketchSegmentCircle)sketchSegment;
var radius = sketchCircle.Radius(_Sketch.Points);
if (radius > 0)
{
var center = _Sketch.Points[sketchCircle.CenterPoint];
_Group.Children.Add(new SvgCircleElement(center, radius));
return;
}
}
else if (sketchSegment is SketchSegmentEllipse)
{
var sketchEllipse = (SketchSegmentEllipse)sketchSegment;
var curve = sketchEllipse.MakeCurve(_Sketch.Points) as Geom2d_Ellipse;
if (curve != null)
{
var center = _Sketch.Points[sketchEllipse.CenterPoint];
var element = new SvgEllipseElement(center, curve.MajorRadius(), curve.MinorRadius());
var majorAxisPoint = _Sketch.Points[sketchEllipse.MajorAxisPoint(_Sketch.Points)];
double rotAngle = new Ax2d(center, Dir2d.DX).Angle(new Ax2d(center, new Vec2d(center, majorAxisPoint).ToDir()));
element.Transforms.Add(new SvgRotateTransform(rotAngle.ToDeg(), element.Center));
_Group.Children.Add(element);
return;
}
}
else
{
Messages.Warning($"Unconnectable segment {_Sketch.Segments.FirstOrDefault(x => x.Value == sketchSegment).Key} of type {sketchSegment.GetType().Name} does not have a method to be exported to a SVG element.");
}
Messages.Warning($"Unconnectable segment {_Sketch.Segments.FirstOrDefault(x => x.Value == sketchSegment).Key} of type {sketchSegment.GetType().Name} could not be exported to SVG element.");
}
internal virtual bool Read(XmlReader reader, SvgConverter conv)
{
var transformString = reader.GetAttribute("transform");
if (!transformString.IsNullOrEmpty())
{
Transforms.AddRange(SvgTransform.Create(transformString, conv));
}
conv.PushTransform(Transforms);
var depth = reader.Depth;
reader.Read();
while (!reader.EOF && reader.Depth > depth)
{
if (reader.NodeType != XmlNodeType.Element)
{
reader.Read();
continue;
}
SvgElement newElement = null;
switch (reader.LocalName.ToLower())
{
case "g":
newElement = new SvgGroupElement();
break;
case "circle":
newElement = new SvgCircleElement();
break;
case "ellipse":
newElement = new SvgEllipseElement();
break;
case "path":
newElement = new SvgPathElement();
break;
case "line":
newElement = new SvgLineElement();
break;
case "rect":
newElement = new SvgRectElement();
break;
}
if (newElement != null)
{
if (newElement.Read(reader, conv))
{
Children.Add(newElement);
}
}
else
{
reader.Skip();
}
}
return(true);
}