DynamoVisualProgramming.ZeroTouchLibrary by Autodesk

<PackageReference Include="DynamoVisualProgramming.ZeroTouchLibrary" Version="2.2.1.5204" />

.NET API 340,352 bytes

 NurbsCurve

public class NurbsCurve : Curve
public int Degree { get; }

The degree of the curve

public bool IsPeriodic { get; }

Whether the NurbsCurve is periodic or not

public bool IsRational { get; }

Whether the NurbsCurve is rational or not. This defines whether any of the weights are not 1.0.

public static NurbsCurve ByControlPoints(IEnumerable<Point> points)

Create a BSplineCurve by using explicit control points. NOTE 1: BSplineCurves with deg=1 have G1 discontinuities, which cause problems for extrusion, sweep, and other operations. They should be avoided. Use a PolyCurve instead. NOTE 2: If the curve is periodic (closed), then the first and last points MUST be the same.

public static NurbsCurve ByControlPoints(IEnumerable<Point> points, int degree = 3)

Create a BSplineCurve by using explicit control points. NOTE 1: BSplineCurves with deg=1 have G1 discontinuities, which cause problems for extrusion, sweep, and other operations. They should be avoided. Use a PolyCurve instead. NOTE 2: If the curve is periodic (closed), then the first and last points MUST be the same.

public static NurbsCurve ByControlPoints(IEnumerable<Point> points, int degree = 3, bool closeCurve = false)

Create a BSplineCurve by using explicit control points. NOTE 1: BSplineCurves with deg=1 have G1 discontinuities, which cause problems for extrusion, sweep, and other operations. They should be avoided. Use a PolyCurve instead. NOTE 2: If the curve is periodic (closed), then the first and last points MUST be the same.

public static NurbsCurve ByControlPointsWeightsKnots(IEnumerable<Point> points, double[] weights, double[] knots, int degree = 3)

Create a BSplineCurve by from control vertices, weights, and knots. FROM ASM DOCS: Degree: Should be greater than 1 (piecewise-linear spline) and less than 26 (the maximum B-spline basis degree supported by ASM). Weights: All weight values (if supplied) should be strictly positive. Weights smaller than 1e-11 will be rejected and the function will fail. Knots: The knot vector should be a non-decreasing sequence. Interior knot multiplicity should be no larger than degree + 1 at the start/end knot and degree at an internal knot (this allows curves with G1 discontinuities to be represented). Note that non-clamped knot vectors are supported, but will be converted to clamped ones, with the corresponding changes applied to the control point/weight data. knot array: the array size must be num_control_points + degree + 1

public static NurbsCurve ByPoints(IEnumerable<Point> points)

Create a BSplineCurve by interpolating between points.

public static NurbsCurve ByPoints(IEnumerable<Point> points, bool closeCurve = false)

Create a BSplineCurve by interpolating between points. NOTE 2: If the curve is periodic (closed), then the first and last points MUST be the same.

public static NurbsCurve ByPoints(IEnumerable<Point> points, int degree = 3)

Create a BSplineCurve by interpolating between points with specified degree.

public static NurbsCurve ByPointsTangents(IEnumerable<Point> points, Vector startTangent, Vector endTangent)

Returns a BSplineCurve through the points, with tangent directions.

public Point[] ControlPoints()

Get the control points of the NurbsCurve. These are the points that the curve interpolates.

public double[] Knots()

The knots of the Curve. These, along with the Degree, define the domain of the Curve where a particular control vertex acts.

public double[] Weights()

The weights of the control vertices of the curve. These define the magnitude of influence of the control vertices.