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refactor

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This commit is contained in:
Justin Lin 2022-05-04 21:12:04 +08:00
parent 4e406b19cf
commit 1ef1b46a93
1 changed files with 5 additions and 8 deletions
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13
src/_impl/_bezier_curve_impl.scad
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@ -16,19 +16,16 @@ function bezier_curve_coordinate(t, pn, n, i) =
let(one_t = 1 - t)
sum([for(j = [0:n]) _combi(n, j) * pn[j][i] * one_t ^ (n - j) * t ^ j]);
_bezier_curve_point2 = function(t, points, n)
[for(i = [0, 1]) bezier_curve_coordinate(t, points, n, i)];
_bezier_curve_point3 = function(t, points, n)
[for(i = [0:2]) bezier_curve_coordinate(t, points, n, i)];
function _bezier_curve(range, t, points, n) =
[for(i = range) bezier_curve_coordinate(t, points, n, i)];
function _bezier_curve_impl(t_step, points) =
let(
t_end = ceil(1 / t_step),
n = len(points) - 1,
_bezier_curve = len(points[0]) == 3 ? _bezier_curve_point3 : _bezier_curve_point2
range = [0:len(points[0]) - 1]
)
[
each [for(t = 0; t < t_end; t = t + 1) _bezier_curve(t * t_step, points, n)],
_bezier_curve(1, points, n)
each [for(t = 0; t < t_end; t = t + 1) _bezier_curve(range, t * t_step, points, n)],
_bezier_curve(range, 1, points, n)
];