public override void WriteXml(Matrix documentTrans)
{
Debug.Assert(iTrimmedCurves != null);
Debug.Assert(iTrimmedCurves.Count > 0);
string pathData = MoveTo(documentTrans * iTrimmedCurves[0].StartPoint);
foreach (ITrimmedCurve curve in iTrimmedCurves)
{
ITrimmedCurve iTrimmedCurve = curve;
Line line = iTrimmedCurve.Geometry as Line;
if (line != null)
{
pathData += LineTo(documentTrans * iTrimmedCurve.EndPoint);
continue;
}
if (iTrimmedCurve.Geometry is Circle || iTrimmedCurve.Geometry is Ellipse)
{
ITrimmedCurve iTrimmedEllipse = iTrimmedCurve.ProjectToPlane(Plane.PlaneXY);
Ellipse ellipse = iTrimmedEllipse.Geometry as Ellipse;
if (ellipse == null)
{
ellipse = ((Circle)iTrimmedEllipse.Geometry).AsEllipse();
}
Debug.Assert(ellipse != null);
Debug.Assert(iTrimmedEllipse.Bounds.Span > 0); // interval should always be positive for SC ellipses
Debug.Assert(!iTrimmedEllipse.IsReversed);
double majorRadius = documentTrans.Scale * Math.Max(ellipse.MajorRadius, ellipse.MinorRadius);
double minorRadius = documentTrans.Scale * Math.Min(ellipse.MajorRadius, ellipse.MinorRadius);
double x = Vector.Dot(ellipse.Frame.DirX.UnitVector, Direction.DirX.UnitVector);
double y = Vector.Dot(ellipse.Frame.DirX.UnitVector, Direction.DirY.UnitVector);
pathData += ArcTo(
majorRadius, minorRadius,
Math.Atan2(y, x) * 180 / Math.PI,
iTrimmedEllipse.Bounds.Span > Math.PI,
Direction.Equals(Direction.DirZ, ellipse.Frame.DirZ),
documentTrans * iTrimmedEllipse.EndPoint
);
continue;
}
NurbsCurve nurbsCurve = iTrimmedCurve.Geometry as NurbsCurve;
if (nurbsCurve == null)
{
ProceduralCurve proceduralCurve = iTrimmedCurve.Geometry as ProceduralCurve;
if (proceduralCurve != null)
{
nurbsCurve = proceduralCurve.AsSpline(iTrimmedCurve.Bounds);
}
}
if (nurbsCurve != null)
{
Debug.Assert(nurbsCurve.Data.Degree == 3);
SelectFragmentResult result = null;
CurveSegment fullNurbsCurve = CurveSegment.Create(nurbsCurve);
List <ITrimmedCurve> pointCurves = nurbsCurve.Data.Knots
.Where(k => iTrimmedCurve.Bounds.Contains(k.Parameter))
.Select(k => ((ITrimmedCurve)(nurbsCurve.Evaluate(k.Parameter).Point.AsCurveSegment())))
.ToList <ITrimmedCurve>();
pointCurves.Insert(0, nurbsCurve.Evaluate(iTrimmedCurve.Bounds.Start).Point.AsCurveSegment());
pointCurves.Add(nurbsCurve.Evaluate(iTrimmedCurve.Bounds.End).Point.AsCurveSegment());
for (int i = 0; i < pointCurves.Count - 1; i++)
{
//try {
result = fullNurbsCurve.SelectFragment((
nurbsCurve.ProjectPoint(pointCurves[i].StartPoint).Param +
nurbsCurve.ProjectPoint(pointCurves[i + 1].StartPoint).Param
) / 2, pointCurves);
//}
//catch {
// Debug.Assert(false, "Attempted to trim curve out of bounds.");
// WriteBlock.ExecuteTask("SVG Exception Curves", () => DesignCurve.Create(Window.ActiveWindow.Scene as Part, iTrimmedCurve));
// break;
//}
if (result != null)
{
NurbsCurve fragment = result.SelectedFragment.Geometry as NurbsCurve;
WriteBlock.ExecuteTask("curve", delegate { fragment.Print(); });
pathData += CubicBézierTo(documentTrans * fragment.ControlPoints[1].Position, documentTrans * fragment.ControlPoints[2].Position, documentTrans * fragment.ControlPoints[3].Position);
}
}
continue;
}
PointCurve pointCurve = iTrimmedCurve.Geometry as PointCurve;
if (pointCurve != null)
{
continue;
}
// Handle Polygons, which are not in the API
foreach (Point point in iTrimmedCurve.Geometry.GetPolyline(iTrimmedCurve.Bounds).Skip(1))
{
pathData += LineTo(documentTrans * point);
}
continue;
// throw new NotSupportedException("Unhandled iTrimmedCurve");
}
if (isClosed)
{
pathData += ClosePath();
}
xmlWriter.WriteStartElement("path");
xmlWriter.WriteAttributeString("d", pathData);
StyleAttributes(strokeColor, fillColor, strokeWidth);
xmlWriter.WriteEndElement();
}
