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refactor: extract sgn

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Justin Lin
2022-04-16 16:11:50 +08:00
parent 449e7b520b
commit d69e08c506
1 changed files with 2 additions and 2 deletions
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4
src/_impl/_archimedean_spiral_impl.scad
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@@ -17,9 +17,9 @@ function _find_radians(b, point_distance, radians, n, count = 1) =
);
function _archimedean_spiral_impl(arm_distance, init_angle, point_distance, num_of_points, rt_dir) =
let(b = arm_distance / (2 * PI), init_radian = init_angle * PI / 180)
let(b = arm_distance / (2 * PI), init_radian = init_angle * PI / 180, sgn = rt_dir == "CT_CLK" ? 1 : -1)
[
for(theta = _find_radians(b, point_distance, [init_radian], num_of_points))
let(r = b * theta, a = (rt_dir == "CT_CLK" ? 1 : -1) * theta * 57.2958)
let(r = b * theta, a = sgn * theta * 57.2958)
[r * [cos(a), sin(a)], a]
];