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nurbs bugfix singleton point evaluation

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This commit is contained in:
Adrian Mariano 2025-02-07 17:47:06 -05:00
parent 5c42891c39
commit 2a5c9555ab
1 changed files with 3 additions and 3 deletions

6
nurbs.scad
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@ -19,7 +19,7 @@ include<BOSL2/std.scad>
// Section: NURBS Curves
// Function: nurbs_curve()
// Synopsis: Computes one more more points on a NURBS curve.
// Synopsis: Computes one or more points on a NURBS curve.
// SynTags: Path
// Topics: NURBS Curves
// See Also: debug_nurbs()
@ -174,8 +174,8 @@ include<BOSL2/std.scad>
function nurbs_curve(control,degree,splinesteps,u, mult,weights,type="clamped",knots) =
assert(num_defined([splinesteps,u])==1, "Must define exactly one of u and splinesteps")
is_finite(u) ? nurbs_curve(control,degree,[u],mult,weights,type=type)[0]
: assert(is_undef(splinesteps) || (is_int(splinesteps) || splinesteps>0), "splinesteps must be a positive integer")
is_finite(u) ? nurbs_curve(control,degree,u=[u],mult,weights,type=type)[0]
: assert(is_undef(splinesteps) || (is_int(splinesteps) && splinesteps>0), "splinesteps must be a positive integer")
let(u=is_range(u) ? list(u) : u)
assert(is_undef(u) || (is_vector(u) && min(u)>=0 && max(u)<=1), "u must be a list of points on the interval [0,1] or a range contained in that interval")
is_def(weights) ? assert(is_vector(weights, len(control)), "Weights should be a vector whose length is the number of control points")