public Curve NurbsToSpeckle(DB.NurbSpline revitCurve, string units = null)
{
var points = new List <double>();
foreach (var p in revitCurve.CtrlPoints)
{
var point = PointToSpeckle(p, units);
points.AddRange(new List <double> {
point.x, point.y, point.z
});
}
Curve speckleCurve = new Curve();
speckleCurve.weights = revitCurve.Weights.Cast <double>().ToList();
speckleCurve.points = points;
speckleCurve.knots = revitCurve.Knots.Cast <double>().ToList();;
speckleCurve.degree = revitCurve.Degree;
//speckleCurve.periodic = revitCurve.Period;
speckleCurve.rational = revitCurve.isRational;
speckleCurve.closed = RevitVersionHelper.IsCurveClosed(revitCurve);
speckleCurve.units = units ?? ModelUnits;
speckleCurve.domain = new Interval(revitCurve.GetEndParameter(0), revitCurve.GetEndParameter(1));
speckleCurve.length = ScaleToSpeckle(revitCurve.Length);
var coords = revitCurve.Tessellate().SelectMany(xyz => PointToSpeckle(xyz, units).ToList()).ToList();
speckleCurve.displayValue = new Polyline(coords, units);
return(speckleCurve);
}
private static Autodesk.DesignScript.Geometry.Curve Convert(Autodesk.Revit.DB.NurbSpline crv)
{
var convert = NurbsCurve.ByControlPointsWeightsKnots(crv.CtrlPoints.Select(x => x.ToPoint(false)).ToArray(),
crv.Weights.Cast <double>().ToArray(), crv.Knots.Cast <double>().ToArray(), crv.Degree);
if (!crv.IsBound)
{
return(convert);
}
// bound the curve parametric range
// we first get the full parametric domain from the knots
// note that some knots be negative and the domain may appear reversed
var parms = crv.Knots.Cast <double>().ToList();
var fsp = parms.First();
var fep = parms.Last();
// obtain the full domain
var fd = Math.Abs(fsp - fep);
// these are the start and end parameters of the bound curve
var sp = crv.GetEndParameter(0);
var ep = crv.GetEndParameter(1);
// get the normalized parameters for trim
var nsp = Math.Abs(fsp - sp) / fd;
var nep = Math.Abs(fsp - ep) / fd;
// if there's no trimming to do, avoid it
if (Math.Abs(nsp) < 1e-6 && Math.Abs(1 - nep) < 1e-6)
{
return(convert);
}
return(convert.TrimByParameter(nsp, nep));
}
