From d69e08c506c91e548263fc793b5202b58218db18 Mon Sep 17 00:00:00 2001 From: Justin Lin Date: Sat, 16 Apr 2022 16:11:50 +0800 Subject: [PATCH] refactor: extract sgn --- src/_impl/_archimedean_spiral_impl.scad | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/_impl/_archimedean_spiral_impl.scad b/src/_impl/_archimedean_spiral_impl.scad index 36c2cad7..6ffddb9d 100644 --- a/src/_impl/_archimedean_spiral_impl.scad +++ b/src/_impl/_archimedean_spiral_impl.scad @@ -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] ]; \ No newline at end of file