public static NurbsCurve Polyline(List <Vector> points)
{
KnotArray knots = new KnotArray()
{
0.0, 0.0
};
double lsum = 0.0;
for (int i = 0; i < points.Count - 1; i++)
{
lsum += Constants.DistanceTo(points[i], points[i + 1]);
knots.Add(lsum);
}
knots.Add(lsum);
var weights = points.Select(x => 1.0).ToList();
points.ForEach(x => weights.Add(1.0));
return(new NurbsCurve(1, knots, Eval.Homogenize1d(points, weights)));
}
public static NurbsCurve RationalBezierCurve(List <Vector> controlPoints, List <double> weights = null)
{
var degree = controlPoints.Count - 1;
var knots = new KnotArray();
for (int i = 0; i < degree + 1; i++)
{
knots.Add(0.0);
}
for (int i = 0; i < degree + 1; i++)
{
knots.Add(1.0);
}
if (weights == null)
{
weights = Sets.RepeatData(1.0, controlPoints.Count);
}
return(new NurbsCurve(degree, knots, Eval.Homogenize1d(controlPoints, weights)));
weights = Constants.Rep(controlPoints.Count, 1.0);
//return new NurbsCurveData(degree, knots, Eval.Homogenize1d(controlPoints, weights));
return(null);
}