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Rhino.Geometry.Collections

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NurbsSurfacePointList

NurbsSurfacePointList class

Provides access to the control points of a NURBS surface.

Derived Classes:

Namespace: Rhino.Geometry.Collections
NurbsSurfacePointList: references

Properties (3)

CountU

Gets the number of control points in the U direction of this surface.

CountV

Gets the number of control points in the V direction of this surface.

PointSize

Returns the control point size, or the number of doubles per control point. For rational curves, PointSize = Surface.Dimension + 1. For non-rational curves, PointSize = Surface.Dimension.

Methods (17)

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.

EpsilonEquals(NurbsSurfacePointList other, double epsilon)

Check that all values in other are within epsilon of the values in this

GetControlPoint(int u, int v)

Gets the control point at the given (u, v) index.

GetGrevillePoint(int u, int v)

Gets the 2-D Greville point associated with the control point at the given (u, v) index.

GetPoint(int u, int v, out Point3d point)

Gets a world 3-D, or Euclidean, control point at the given (u, v) index. The 4-D representation is (x, y, z, 1.0).

GetPoint(int u, int v, out Point4d point)

Gets a homogeneous control point at the given (u, v) 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).

GetWeight(int u, int v)

Gets the weight of a control point at the given (u, v) index. Note, if the surface is non-rational, the weight will be 1.0.

SetControlPoint(int u, int v, ControlPoint cp)

Sets the control point at the given (u, v) index.

SetControlPoint(int u, int v, Point3d cp)

Sets the control point at the given (u, v) index.

SetPoint(int u, int v, double x, double y, double z, double weight)

Sets a homogeneous control point at the given (u, v) 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).

SetPoint(int u, int v, double x, double y, double z)

Sets a world 3-D, or Euclidean, control point at the given (u, v) index. The 4-D representation is (x, y, z, 1.0).

SetPoint(int u, int v, Point3d point, double weight)

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).

SetPoint(int u, int v, Point3d point)

Sets a world 3-D, or Euclidean, control point at the given (u, v) index. The 4-D representation is (x, y, z, 1.0).

SetPoint(int u, int v, Point4d point)

Sets a homogeneous control point at the given (u, v) 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).

SetWeight(int u, int v, double weight)

Sets the weight of a control point at the given (u, v) index. Note, if the surface is non-rational, it will be converted to rational.

UVNDirectionsAt(int u, int v, out Vector3d uDir, out Vector3d vDir, out Vector3d nDir)

Calculates the U, V, and N directions of a NURBS surface control point similar to the method used by Rhino's MoveUVN command.

ValidateSpacing(double closeTolerance, double stackTolerance, out IndexPair[] closeIndices, out IndexPair[] stackedIndices)

Simple check of distance between adjacent control points

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