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Blender
Module Curve :: Class SurfNurb

Class SurfNurb

source code

The SurfNurb Object

This object provides access to the control points of the surfaces that make up a Blender Curve.

The SurfNurb supports the Python iterator and sequence protocols which means you can use a python for statement or [] operator to access the points in a surface. Points are accessed linearly; for a N-by-M UV surface, the first N control points correspond to V=0, then second N to V=1, and so on.

Instance Methods
None
__setitem__(n, point)
Set the Nth control point in the surface.		 source code
List of 5 floats [x, y, z, w, t] for Poly or Nurbs
__getitem__(n)
Get the Nth control point in the surface.		 source code
Instance Variables
boolean cyclicU
The cyclic setting for the U direction (True = cyclic).
boolean cyclicV
The cyclic setting for the V direction (True = cyclic).
int flagU
The knot flag U.
int flagV
The knot flag V.
tuple knotsU
The The knot vector in the U direction
tuple knotsV
The The knot vector in the V direction
int orderU
The order setting for the U direction.
int orderV
The order setting for the V direction.
int pointsU
The number of control points in the U direction (read only).
int pointsV
The number of control points in the V direction (read only).
Method Details

__setitem__(n, point)
(Index assignment operator)

source code 
Set the Nth control point in the surface.
Parameters:
  • n (integer) - the index of the point to replace
  • point (list of 4 floats (optional 5th float is the tilt value in radians)) - the point that will replace the one in the curve. The point is list of 4 floats in x,y,z,w (optionally tilt in radians as 5th value) format.
Returns: None
None

__getitem__(n)
(Indexing operator)

source code 
Get the Nth control point in the surface.
Parameters:
  • n (integer) - the index of the point to return
Returns: List of 5 floats [x, y, z, w, t] for Poly or Nurbs
The Nth point in the curve
Notes:
  • This returned value is independent on the curve; modifying it will not affect the curve.
  • Each successive call returns a new object.

Instance Variable Details

flagU

The knot flag U. Changing the knot type automatically recalculates the knots. The flag can be one of three values:
  • 0 : uniform knots
  • 1 : endpoints knots
  • 2 : bezier knots
Type:
int

flagV

The knot flag V. See flagU for description.
Type:
int

orderU

The order setting for the U direction. Values are clamped to the range [2:6] and not greater than the U dimension.
Type:
int

orderV

The order setting for the V direction. Values are clamped to the range [2:6] and not greater than the V dimension.
Type:
int

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