NurbsCurvePointList
Provides access to the control points of a NURBS curve.
Inheritance Hierarchy
System.Object
Rhino.Geometry.Collections.NurbsCurvePointList
Namespace: Rhino.Geometry.Collections
Assembly: RhinoCommon (in RhinoCommon.dll)
Syntax
public class NurbsCurvePointList : IEnumerable<ControlPoint>, IEnumerable, IEpsilonComparable<NurbsCurvePointList>, IList<ControlPoint>, ICollection<ControlPoint>The NurbsCurvePointList type exposes the following members.
Properties
Name
Description
Public Property
ControlPolygonLength
Gets the length of the polyline connecting all control points.
Public Property
Count
Gets the number of control points in this curve.
Public Property
Item
Gets or sets the control point location at the given index.
Public Property
PointSize
Returns the control point size, or the number of doubles per control point. For rational curves, PointSize = Curve.Dimension + 1. For non-rational curves, PointSize = Curve.Dimension.
Methods
Name
Description
Public Method
ChangeEndWeights
Use a combination of scaling and reparameterization to change the end weights to the specified values.
Public Method
Contains
Determines if this list contains an item.
Public Method
ControlPolygon
Constructs a polyline through all the control points. Note that periodic curves generate a closed polyline with fewer points than control-points.
Public Method
CopyTo
Copied the list to an array.
Public Method
EnsurePrivateCopy
If you want to keep a copy of this class around by holding onto it in a variable after a command completes, call EnsurePrivateCopy to make sure that this class is not tied to the document. You can call this function as many times as you want.
Public Method
EpsilonEquals
Check that all values in other are within epsilon of the values in this
Public Method
Equals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Protected Method
Finalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public Method
GetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public Method
GetPoint(Int32, Point3d.)
Gets a world 3-D, or Euclidean, control point at the given index. The 4-D representation is (x, y, z, 1.0).
Public Method
GetPoint(Int32, Point4d.)
Gets a homogeneous control point at the given index, where the 4-D representation is (x, y, z, w). The world 3-D, or Euclidean, representation is (x/w, y/w, z/w).
Public Method
GetType
Gets the Type of the current instance.
(Inherited from Object.)
Public Method
GetWeight
Gets the weight of a control point at the given index. Note, if the curve is non-rational, the weight will be 1.0.
Public Method
IndexOf
Gets the index of a control point, or -1.
Public Method
MakeNonRational
Converts the curve to a Non-rational NURBS curve. Non-rational curves have unweighted control points.
Public Method
MakeRational
Converts the curve to a Rational NURBS curve. Rational NURBS curves have weighted control points.
Protected Method
MemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Public Method
SetPoint(Int32, Point3d)
Sets a world 3-D, or Euclidean, control point at the given index. The 4-D representation is (x, y, z, 1.0).
Public Method
SetPoint(Int32, Point4d)
Sets a homogeneous control point at the given index, where the 4-D representation is (x, y, z, w). The world 3-D, or Euclidean, representation is (x/w, y/w, z/w).
Public Method
SetPoint(Int32, Point3d, Double)
Sets a world 3-D, or Euclidean, control point and weight at a given index. The 4-D representation is (x*w, y*w, z*w, w).
Public Method
SetPoint(Int32, Double, Double, Double)
Sets a world 3-D, or Euclidean, control point at the given index. The 4-D representation is (x, y, z, 1.0).
Public Method
SetPoint(Int32, Double, Double, Double, Double)
Sets a homogeneous control point at the given index, where the 4-D representation is (x, y, z, w). The world 3-D, or Euclidean, representation is (x/w, y/w, z/w).
Public Method
SetWeight
Sets the weight of a control point at the given index Note, if the curve is non-rational, it will be converted to rational.
Public Method
ToString
Returns a string that represents the current object.
(Inherited from Object.)
Public Method
UVNDirectionsAt
Calculates the U, V, and N directions of a NURBS curve control point similar to the method used by Rhino’s MoveUVN command.
Public Method
ValidateSpacing
Simple check of distance between adjacent control points