Nurb
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This class represents non-uniform rational
B-splines (NURBS) in 3D space. For more information, see Working
with NURBS Curves.
Inheritance Hierarchy
SystemObject
SystemMarshalByRefObject
Teigha.RuntimeDisposableWrapper
Teigha.GeometryEntity3d
Teigha.GeometryCurve3d
Teigha.GeometrySplineEntity3d
Teigha.GeometryNurbCurve3d
SystemMarshalByRefObject
Teigha.RuntimeDisposableWrapper
Teigha.GeometryEntity3d
Teigha.GeometryCurve3d
Teigha.GeometrySplineEntity3d
Teigha.GeometryNurbCurve3d
Namespace: Teigha.Geometry
Assembly: TD_Mgd (in TD_Mgd.dll) Version: 26.9.0.0
Syntax
The NurbCurve3d type exposes the following members.
Constructors
| Name | Description | |
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NurbCurve3d | Default constructor for the NurbCurve3d class. With this constructor no actual data is stored in the object. |
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NurbCurve3d(EllipticalArc3d) | Constructor for the NurbCurve3d class. Constructs a 3D curve from a passed 3D elliptical arc. |
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NurbCurve3d(LineSegment3d) | Constructor for the NurbCurve3d class. Constructs a 3D curve from a passed 3D line segment. |
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NurbCurve3d(Point3dCollection) | Constructor for the NurbCurve3d class. Constructs a 3D curve interpolating a given array of 3D points. |
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NurbCurve3d(Point3dCollection, Tolerance) | Constructor for the NurbCurve3d class. Constructs a 3D curve interpolating a given array of 3D points within a given tolerance. |
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NurbCurve3d(Int32, PolylineCurve3d, Boolean) | Constructor for the NurbCurve3d class. Constructs a NURBS curve with a specified degree value, fit polyline, and a flag specifying whether to make a closed curve. |
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NurbCurve3d(Point3dCollection, Vector3dCollection, Boolean) | Constructor for the NurbCurve3d class. Constructs a 3D polynomial curve interpolating a given array of 3D points. |
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NurbCurve3d(Int32, KnotCollection, Point3dCollection, Boolean) | Constructor for the NurbCurve3d class. Constructs a 3D curve according to the passed parameters. |
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NurbCurve3d(Point3dCollection, Vector3dCollection, Tolerance, Boolean) | Constructor for the NurbCurve3d class. Constructs a 3D polynomial curve interpolating a given array of 3D points according to the specified tolerance. |
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NurbCurve3d(Int32, KnotCollection, Point3dCollection, DoubleCollection, Boolean) | Constructor for the NurbCurve3d class. Constructs a 3D curve according to the passed parameters. |
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NurbCurve3d(Point3dCollection, Vector3d, Vector3d, Boolean, Boolean) | Constructor for the NurbCurve3d class. Constructs a 3D curve interpolating a given array of 3D points and using given derivatives at the start point and endpoint. |
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NurbCurve3d(Point3dCollection, Vector3d, Vector3d, Boolean, Boolean, KnotParameterizationEnum) | Constructor for the NurbCurve3d class. Constructs a 3D curve interpolating a given array of 3D points, knot parameterization, and having given derivatives at the start point and endpoint. |
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NurbCurve3d(Point3dCollection, Vector3d, Vector3d, Boolean, Boolean, Tolerance) | Constructor for the NurbCurve3d class. Constructs a 3D curve interpolating a given array of 3D points according to the specified tolerance and using given derivatives at the start point and endpoint. |
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NurbCurve3d(Point3dCollection, Vector3d, Vector3d, Boolean, Boolean, KnotParameterizationEnum, Tolerance) | Constructor for the NurbCurve3d class. Constructs a 3D curve interpolating a given array of 3D points, knot parameterization, and having given derivatives at the start point and endpoint. |
Properties
| Name | Description | |
|---|---|---|
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AutoDelete | Property that indicates whether the object should be
automatically deleted by the Garbage Collector. (Inherited from DisposableWrapper) |
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BoundBlock | Property that represents an oriented bounding box of
curve. (Inherited from Curve3d) |
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DefinitionData | Property that represents a nurb curve definition data including degree, control points, knots, weights and information about whether the spline is rational and whether it is periodic. |
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Degree | Property that represents the degree of the spline. (Inherited from SplineEntity3d) |
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EndParameter | Property that represents the parameter corresponding to the end
point of this spline. (Inherited from SplineEntity3d) |
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EndPoint | Property that represents the end point of this spline. (Inherited from SplineEntity3d) |
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EvalMode | Property that indicates whether the evaluator optimization is turned on. Not implemented. |
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FitData | Property that represents a nurb curve definition fit data including degree, information about whether tangents exist, start and end tangents, fit points, knot parameterization, fit tolerance. |
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FitKnotParameterization | Property that represents parameterization of knot values. |
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FitTolerance | Property that represents tolerance for fit data. |
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HasEndPoint | Property that indicates whether the parametric interval of the
curve has an upper bound. (Inherited from Curve3d) |
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HasFitData | Property that indicates whether the spline is constructed using
fit points. (Inherited from SplineEntity3d) |
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HasStartPoint | Property that indicates whether the parametric interval of the
curve has a lower bound. (Inherited from Curve3d) |
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IsDisposed | Property that indicates whether pointer to native code
unmanaged object == IntPtr::Zero. (Inherited from DisposableWrapper) |
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IsRational | Property that indicates whether the spline is rational or a
polynomial. (Inherited from SplineEntity3d) |
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Knots | Property that represents the knot collection. (Inherited from SplineEntity3d) |
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NumberOfControlPoints | Property that represents the number of points in the control
point array. (Inherited from SplineEntity3d) |
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NumberOfKnots | Property that represents the number of knots in the knot
vector. (Inherited from SplineEntity3d) |
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NumFitPoints | Property that represents a number of fit points in a spline. |
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NumWeights | Property that represents the number of weights in the spline. |
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Order | Property that represents the order of the spline. (Inherited from SplineEntity3d) |
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OrthoBoundBlock | Property that represents a bounding box whose edges are aligned
with the coordinate axes. (Inherited from Curve3d) |
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StartParameter | Property that represents the parameter corresponding to the
start point of this spline. (Inherited from SplineEntity3d) |
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StartPoint | Property that represents the start point of this spline. (Inherited from SplineEntity3d) |
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UnmanagedObject | Property that represents a pointer to an unmanaged
object. (Inherited from DisposableWrapper) |
Methods
| Name | Description | |
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AddControlPointAt | Adds a control point at the specified knot. |
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AddFitPointAt | Inserts a fit point at the specified index. |
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AddKnot | Adds a new knot to the spline knot array. |
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Clone | Clones this entity and returns a handle to the cloned
entity. (Inherited from Entity3d) |
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ControlPointAt | Returns control point in the control point array at the
specified index. Currently not implemented. (Inherited from SplineEntity3d) |
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Create | Creates an object based on the passed pointer and returns a handle to the created object. |
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CreateObjRef | (Inherited from MarshalByRefObject) |
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DeleteControlPointAt | Deletes a control point at the specified index. |
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DeleteFitPointAt | Removes a fit point with the specified index. |
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Dispose | (Inherited from DisposableWrapper) |
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ElevateDegree | Increases the spline degree by the specified value. |
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Equals | Checks objects for equality. (Inherited from DisposableWrapper) |
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EvaluatePoint | Retrieves the point on the curve corresponding to the specified
parameter value. (Inherited from Curve3d) |
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Explode | Explodes the curve into its component sub-curves. (Inherited from Curve3d) |
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GetArea(Double, Double) | Retrieves the area of the parametric interval defined by the
passed start and end parameters. (Inherited from Curve3d) |
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GetArea(Double, Double, Tolerance) | Retrieves the area of the parametric interval defined by the
passed start and end parameters. (Inherited from Curve3d) |
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GetBoundBlockOf | Retrieves the oriented bounding box of the specified
sub-interval of this curve. (Inherited from Curve3d) |
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GetClosestPointTo(Curve3d) | Retrieves the closest points between this curve and the passed
curve. (Inherited from Curve3d) |
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GetClosestPointTo(Point3d) | Retrieves the closest point on this curve to the specified
point. (Inherited from Curve3d) |
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GetClosestPointTo(Curve3d, Tolerance) | Retrieves the closest points between this curve and the passed
curve within a specified tolerance. (Inherited from Curve3d) |
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GetClosestPointTo(Point3d, Tolerance) | Retrieves the closest point on this curve to the specified
point within a specified tolerance. (Inherited from Curve3d) |
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GetContinuityAtKnot(Int32) | Returns the degree of the highest derivative that is defined at
a specified knot. Currently not implemented. (Inherited from SplineEntity3d) |
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GetContinuityAtKnot(Int32, Tolerance) | Returns the degree of the highest derivative that is defined at
a specified knot. Currently not implemented. (Inherited from SplineEntity3d) |
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GetDistanceTo(Curve3d) | Retrieves the distance of the closest points between this curve
and the passed curve. (Inherited from Curve3d) |
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GetDistanceTo(Point3d) | Retrieves the distance of the closest point on this curve and
the specified point. (Inherited from Curve3d) |
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GetDistanceTo(Curve3d, Tolerance) | Retrieves the distance of the closest points between this curve
and the passed curve within a specified tolerance. (Inherited from Curve3d) |
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GetDistanceTo(Point3d, Tolerance) | Retrieves the distance of the closest point on this curve and
the specified point within a specified tolerance. (Inherited from Curve3d) |
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GetFitPointAt | Retrieves the fit point at the specified index. |
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GetFitTangents | Retrieves the start and end tangents if this spline was constructed with fit data. |
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GetHashCode | Retrieves the object hash code. (Inherited from DisposableWrapper) |
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GetInterval | Retrieves the parametric interval of this curve. (Inherited from Curve3d) |
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GetLength | Retrieves the arc length of the curve between the two parameter
values. (Inherited from Curve3d) |
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GetLifetimeService | (Inherited from MarshalByRefObject) |
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GetNormalPoint(Point3d) | Retrieves the point on this curve where normal extends through
the passed point. (Inherited from Curve3d) |
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GetNormalPoint(Point3d, Tolerance) | Retrieves the point on this curve where normal extends through
the passed point within the specified tolerance. (Inherited from Curve3d) |
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GetOrthoBoundBlockOf | Retrieves the bounding box of the specified parametric range of
this curve. Bounding box sides are parallel to the coordinate
axes. (Inherited from Curve3d) |
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GetOrthoProjectEntity(Plane) | Retrieves the entity representing the curve's orthogonal
projection onto the projection plane. (Inherited from Curve3d) |
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GetOrthoProjectEntity(Plane, Tolerance) | Retrieves the entity representing the curve's orthogonal
projection onto the projection plane. (Inherited from Curve3d) |
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GetParameterAtLength | Retrieves the parameter value of the point whose arc length
distance is the input length. (Inherited from Curve3d) |
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GetParameterOf(Point3d) | Retrieves the parameter value of a point. (Inherited from Curve3d) |
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GetParameterOf(Point3d, Tolerance) | Retrieves the parameter value of a point within a specified
tolerance. (Inherited from Curve3d) |
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GetParametersOfC1Discontinuity | Returns parameter values of all points on the spline where the tangent vector is not continuous. The returned array contains points where the tangent vector to the left of the point is not equal to the tangent vector to the right of the point. |
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GetParametersOfC1Discontinuity(Tolerance) | Returns parameter values of all points on the spline where the tangent vector is not continuous according to the specified tolerance. The returned array contains points where the tangent vector to the left of the point is not equal to the tangent vector to the right of the point. |
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GetParametersOfG1Discontinuity | Returns parameter values of all points on the spline where the tangent vector is not continuous. The returned array contains points where the tangent vector to the left of the point does not have the same direction to the tangent vector to the right of the point. |
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GetParametersOfG1Discontinuity(Tolerance) | Returns parameter values of all points on the spline where the tangent vector is not continuous according to the specified tolerance. The returned array contains points where the tangent vector to the left of the point does not have the same direction to the tangent vector to the right of the point. |
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GetProjectedClosestPointTo(Curve3d, Vector3d) | Retrieves the point on this curve closest to the specified
curve, and the point on the passed curve closest to this curve,
when this curve is projected in the specified direction. (Inherited from Curve3d) |
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GetProjectedClosestPointTo(Point3d, Vector3d) | Retrieves the point on this curve closest to the specified
point when projected in the specified direction. (Inherited from Curve3d) |
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GetProjectedClosestPointTo(Curve3d, Vector3d, Tolerance) | Retrieves the points on this curve closest to the specified
curve, and the point on the other curve closest to this curve, when
this curve is projected in the specified direction. (Inherited from Curve3d) |
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GetProjectedClosestPointTo(Point3d, Vector3d, Tolerance) | Retrieves the point on this curve closest to the specified
point when projected in the specified direction. (Inherited from Curve3d) |
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GetProjectedEntity(Plane, Vector3d) | Retrieves the entity representing the curve's projection onto
the projection plane. (Inherited from Curve3d) |
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GetProjectedEntity(Plane, Vector3d, Tolerance) | Retrieves the entity representing the curve's projection onto
the projection plane. (Inherited from Curve3d) |
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GetReverseParameterCurve | Reverses the parameter *direction* of this *curve*. (Inherited from Curve3d) |
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GetSamplePoints(Int32) | Retrieves an array of sample points along this curve. (Inherited from Curve3d) |
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GetSamplePoints(Double, Double, Double) | Retrieves specified arrays of sample points along this curve
and their parameter values. (Inherited from Curve3d) |
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GetSplitCurves | Retrieves two segments of this curve split at the specified
parameter value. (Inherited from Curve3d) |
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GetTrimmedOffset(Double, Vector3d, OffsetCurveExtensionType) | Receives one or more offset curves that represent the trimmed
offset of the curve. (Inherited from Curve3d) |
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GetTrimmedOffset(Double, Vector3d, OffsetCurveExtensionType, Tolerance) | Receives one or more offset curves that represent the trimmed
offset of the curve. (Inherited from Curve3d) |
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GetType | (Inherited from Object) |
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GetWeightAt | Returns the weight at the specified index. |
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HardTrimByParams | Trims this NURBS curve by the new start and end parameters. |
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InitializeLifetimeService | (Inherited from MarshalByRefObject) |
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InsertKnot | Inserts a new knot to the spline knot array. |
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IsClosed | Checks whether the curve is closed. (Inherited from Curve3d) |
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IsClosed(Tolerance) | Checks whether the curve is closed within a specified
tolerance. (Inherited from Curve3d) |
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IsCoplanarWith(Curve3d, Plane) | Checks whether the specified curve entity is coplanar with this
curve and returns the common plane. (Inherited from Curve3d) |
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IsCoplanarWith(Curve3d, Plane, Tolerance) | Checks whether the specified curve entity is coplanar with this
curve and returns the common plane. (Inherited from Curve3d) |
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IsDegenerate(Entity3d) | Checks whether this curve is degenerate and returns the type of
entity that the curve degenerates to (if degenerate). (Inherited from Curve3d) |
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IsDegenerate(Entity3d, Tolerance) | Checks whether this curve is degenerate and returns the type of
entity that the curve degenerates to (if degenerate). (Inherited from Curve3d) |
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IsEqualTo(Entity3d) | Checks whether this entity is equal to the specified
entity. (Inherited from Entity3d) |
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IsEqualTo(Entity3d, Tolerance) | Checks whether this entity is equal to the specified entity
within a geometric tolerance. (Inherited from Entity3d) |
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IsLinear(Line3d) | Checks whether this curve is linear. (Inherited from Curve3d) |
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IsLinear(Line3d, Tolerance) | Checks whether this curve is linear within a specified
tolerance. (Inherited from Curve3d) |
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IsOn(Double) | Checks whether a specified parameter value is within a valid
parametric range of the curve. (Inherited from Curve3d) |
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IsOn(Point3d) | Checks whether a specified point lies on this curve. (Inherited from Curve3d) |
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IsOn(Double, Tolerance) | Checks whether a specified parameter value is within a valid
parametric range of the curve. (Inherited from Curve3d) |
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IsOn(Point3d, Double) | Checks whether a specified point lies on this curve. (Inherited from Curve3d) |
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IsOn(Point3d, Tolerance) | Checks whether a specified point lies on this curve within a
specified tolerance. (Inherited from Curve3d) |
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IsOn(Point3d, Double, Tolerance) | Checks whether a specified point lies on this curve. (Inherited from Curve3d) |
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IsPeriodic | Checks whether the curve is periodic. (Inherited from Curve3d) |
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IsPlanar(Plane) | Checks whether this curve is planar. If the curve is a line,
this function returns an arbitrary plane that contains the line.
The plane parameter contains meaningful data only if this function
returns a value of true. (Inherited from Curve3d) |
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IsPlanar(Plane, Tolerance) | Checks whether this curve is planar within a specified
tolerance. If the curve is a line, this function returns an
arbitrary plane that contains the line. The plane parameter
contains meaningful data only if this function returns a value of
true. (Inherited from Curve3d) |
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JoinWith | Joins the specified OdGeNurbCurve3d with this spline and returns a reference to the recomputed spline. |
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KnotAt | Returns a knot value at the specified knot index. Currently not
implemented. (Inherited from SplineEntity3d) |
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MakeClosed | Makes an open spline closed, and returns a reference to this spline. |
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MakeNonPeriodic | Makes this spline non-periodic (if it is not). |
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MakeOpen | Makes a closed spline open. |
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MakePeriodic | Makes this spline periodic (if it is not). |
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MakeRational | Makes this spline rational (if it is not). |
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Mirror | Mirrors this entity about the specified plane. (Inherited from Entity3d) |
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PurgeFitData | Purges the fit data defining this spline. The fit data consists of the fit points, fit tolerance, start tangent, and end tangent. The definition of the spline is unchanged. |
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RotateBy | Rotates this entity by the specified angle about the axis
defined by the point and the vector. (Inherited from Entity3d) |
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ScaleBy | Scales this entity by the scale factor about the specified
point. (Inherited from Entity3d) |
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SetControlPointAt | Sets the specified control point in the control point array.
Currently not implemented. (Inherited from SplineEntity3d) |
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SetEvaluateMode | Sets the evaluation mode. |
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SetFitData(Int32, Point3dCollection) | Sets the fit data for this spline. |
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SetFitData(Int32, Point3dCollection, Tolerance) | Sets the fit data for this spline. |
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SetFitData(Point3dCollection, Vector3d, Vector3d) | Sets the fit data for this spline. |
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SetFitData(Point3dCollection, Vector3d, Vector3d, Tolerance) | Sets the fit data for this spline. |
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SetFitData(KnotCollection, Point3dCollection, Vector3d, Vector3d, Boolean) | Sets the fit data for this spline. |
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SetFitData(Point3dCollection, Vector3d, Vector3d, KnotParameterizationEnum, Tolerance) | Sets the fit data for this spline. |
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SetFitData(KnotCollection, Point3dCollection, Vector3d, Vector3d, Tolerance, Boolean) | Sets the fit data for this spline. |
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SetFitPointAt | Sets the fit point at the specified index. |
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SetFitTangents | Sets the fit tangents for this spline. |
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SetInterval | Sets the parametric range of this curve. (Inherited from Curve3d) |
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SetKnotAt | Sets the knot value for the specified knot. Currently not
implemented. (Inherited from SplineEntity3d) |
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SetWeightAt | Sets the weight at the specified index. |
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ToString | (Inherited from Object) |
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TransformBy | Applies the specified 2D transformation matrix to this
entity. (Inherited from Entity3d) |
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TranslateBy | Translates this entity by applying a 3D translation
vector. (Inherited from Entity3d) |
See Also