private static Autodesk.Revit.DB.Curve Convert(Autodesk.DesignScript.Geometry.NurbsCurve crv)
{
// line
if (crv.Degree == 1 && crv.ControlPoints().Length == 2 && !crv.IsRational)
{
return(Autodesk.Revit.DB.Line.CreateBound(crv.ControlPoints()[0].ToXyz(false),
crv.ControlPoints()[1].ToXyz(false)));
}
// polyline - not allowed
if (crv.Degree == 1)
{
throw new Exception(
"Degree 1 Nurbs Curves are not allowed in Revit! Try splitting the curve into "
+
"individual linear pieces");
}
// bezier
if (crv.Degree == 2 && crv.ControlPoints().Count() == 3 && !crv.IsRational)
{
var converted = NurbsUtils.ElevateBezierDegree(crv, 3);
return(Autodesk.Revit.DB.NurbSpline.Create(converted.ControlPoints().ToXyzs(false),
converted.Weights(),
converted.Knots(),
converted.Degree,
converted.IsClosed,
converted.IsRational));
}
// degree 2 curve
if (crv.Degree == 2)
{
// TODO: general NURBS degree elevation
var numSamples = crv.ControlPoints().Count() + 1;
var pts = Enumerable.Range(0, numSamples + 1).Select(x => x / (double)numSamples)
.Select(crv.PointAtParameter);
var tstart = crv.TangentAtParameter(0);
var tend = crv.TangentAtParameter(1);
var resampledCrv = NurbsCurve.ByPointsTangents(pts, tstart.Normalized(), tend.Normalized());
return(Autodesk.Revit.DB.NurbSpline.Create(resampledCrv.ControlPoints().ToXyzs(false),
resampledCrv.Weights(),
resampledCrv.Knots(),
resampledCrv.Degree,
resampledCrv.IsClosed,
resampledCrv.IsRational));
}
// general implementation
return(Autodesk.Revit.DB.NurbSpline.Create(crv.ControlPoints().ToXyzs(false),
crv.Weights(),
crv.Knots(),
crv.Degree,
crv.IsClosed,
crv.IsRational));
}
/// <summary>
/// Convert a DS BSplineCurve to a Revit NurbSpline
/// </summary>
/// <param name="crv"></param>
/// <returns></returns>
private static Autodesk.Revit.DB.Curve Convert(Autodesk.DesignScript.Geometry.NurbsCurve crv)
{
if (crv.Degree == 1 && crv.ControlPoints().Length == 2 && !crv.IsRational)
{
return(Autodesk.Revit.DB.Line.CreateBound(crv.ControlPoints()[0].ToXyz(),
crv.ControlPoints()[1].ToXyz()));
}
if (crv.Degree <= 2)
{
throw new Exception("Could not convert the curve to a Revit curve");
}
// presumably checking if the curve is circular is quite expensive, we don't do it
return(Autodesk.Revit.DB.NurbSpline.Create(crv.ControlPoints().ToXyzs(),
crv.Weights(),
crv.Knots(),
crv.Degree,
crv.IsClosed,
crv.IsRational));
}
public void ToPDF(iTextSharp.text.pdf.PdfWriter w)
{
PdfContentByte cb = w.DirectContent;
cb.SetLineWidth((float)Settings.Thickness);
if (Settings.Fill != null)
{
cb.SetColorFill(Settings.Fill.ToPDFColor());
}
if (Settings.Stroke != null)
{
cb.SetColorStroke(Settings.Stroke.ToPDFColor());
}
if (Geometry.GetType() == typeof(Dyn.Arc))
{
Dyn.Arc arc = Geometry as Dyn.Arc;
cb.MoveTo(arc.StartPoint.X, arc.EndPoint.Y);
cb.CurveTo(arc.PointAtParameter(0.5).X, arc.PointAtParameter(0.5).Y, arc.EndPoint.X, arc.EndPoint.Y);
}
else if (Geometry.GetType() == typeof(Dyn.Line))
{
Dyn.Line line = Geometry as Dyn.Line;
cb.MoveTo(line.StartPoint.X, line.StartPoint.Y);
cb.LineTo(line.EndPoint.X, line.EndPoint.Y);
}
else if (Geometry.GetType() == typeof(Dyn.Circle))
{
Dyn.Circle circle = Geometry as Dyn.Circle;
cb.Circle(circle.CenterPoint.X, circle.CenterPoint.Y, circle.Radius);
}
else if (Geometry.GetType() == typeof(Dyn.Ellipse))
{
Dyn.Ellipse ellipse = Geometry as Dyn.Ellipse;
cb.Ellipse(ellipse.StartPoint.X, ellipse.StartPoint.Y, ellipse.EndPoint.X, ellipse.EndPoint.Y);
}
else if (Geometry.GetType() == typeof(Dyn.Rectangle))
{
Dyn.Rectangle rect = Geometry as Dyn.Rectangle;
cb.Rectangle(rect.Center().X, rect.Center().Y, rect.Width, rect.Height);
}
else if (Geometry.GetType() == typeof(Dyn.Polygon))
{
Dyn.Polygon p = Geometry as Dyn.Polygon;
foreach (var curve in p.Curves())
{
CurveToPDF(curve, cb);
}
}
else if (Geometry.GetType() == typeof(Dyn.PolyCurve))
{
Dyn.PolyCurve pc = Geometry as Dyn.PolyCurve;
foreach (var curve in pc.Curves())
{
CurveToPDF(curve, cb);
}
}
else if (Geometry.GetType() == typeof(Dyn.NurbsCurve))
{
Dyn.NurbsCurve nc = Geometry as Dyn.NurbsCurve;
foreach (var linearc in nc.ApproximateWithArcAndLineSegments())
{
CurveToPDF(linearc, cb);
}
}
else if (Geometry.GetType() == typeof(Dyn.Curve))
{
Dyn.Curve curve = Geometry as Dyn.Curve;
CurveToPDF(curve, cb);
}
else
{
throw new Exception(Properties.Resources.NotSupported);
}
if (Settings.Fill != null && Settings.Stroke != null)
{
cb.FillStroke();
}
else
{
if (Settings.Stroke != null)
{
cb.Stroke();
}
if (Settings.Fill != null)
{
cb.Fill();
}
}
}
