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gen_nurbs_interp — Create control data of a NURBS curve that interpolates given points.
gen_nurbs_interp creates the NURBS control data CtrlRows, CtrlCols, and Knots of a NURBS curve that interpolates the input points (Rows, Cols). If the input point list is not closed (i.e., the first point is identical to the last point), the tangents of the first and last point must be given in Tangents in the order [drow_0,dcol_0,drow_n-1,dcol_n-1] (for closed point lists, Tangents must be an empty tuple). Furthermore the Degree of the NURBS curve must be specified.
The output of gen_nurbs_interp can be used directly with gen_contour_nurbs_xld with the weights vector set to 'auto'.
See the documentation of gen_contour_nurbs_xld for more information on NURBS curves.
Row coordinates of input point list.
Number of elements: Rows == Cols
Column coordinates of input point list.
Number of elements: Cols == Rows
Order of the output curve.
Default value: 3
Suggested values: 2, 3, 4, 5
Restriction: Degree >= 2
Row coordinates of the control polygon.
Column coordinates of the control polygon.
Number of elements: Cols == Rows
The knot vector of the output curve.
If all input parameters are correct gen_nurbs_interp returns the value 2 (H_MSG_TRUE).
draw_nurbs_interp, draw_nurbs_interp_mod
L. Piegl, W. Tiller: ”The NURBS Book”, 2nd Edition, Springer, 1997.
Foundation
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