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ignore if knots is undef

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Justin Lin
2019-08-07 20:45:09 +08:00
parent ee2e4d1c0e
commit d7c9a326cc
1 changed files with 1 additions and 1 deletions
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src/bspline_curve.scad
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@@ -65,7 +65,7 @@ function bspline_curve(t_step, degree, points, knots, weights) =
let(n = len(points))
assert(degree >= 1, "degree cannot be less than 1 (linear)")
assert(degree <= n - 1, "degree must be less than or equal to len(points) - 1")
assert(len(knots) == n + degree + 1, "len(knots) must be equals to len(points) + degree + 1")
assert(is_undef(knots) || (len(knots) == n + degree + 1), "len(knots) must be equals to len(points) + degree + 1")
[
for(t = 0; t < 1; t = t + t_step)
_bspline_curve_interpolate(t, degree, points, knots, weights)