From f1a70f62f3b04d77d7c060fbcf9f42fa1b3d288e Mon Sep 17 00:00:00 2001
From: Revar Desmera <revarbat@gmail.com>
Date: Sun, 30 Jun 2019 18:09:43 -0700
Subject: [PATCH] Fixed // handling for arcs with negative arc angles.

---
 shapes2d.scad | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/shapes2d.scad b/shapes2d.scad
index 5582d9d..d09c585 100644
--- a/shapes2d.scad
+++ b/shapes2d.scad
@@ -141,7 +141,7 @@ function arc(N, r, angle, d, cp, points, width, thickness, start, wedge=false) =
 			start = is_def(start)? start : is_vector(angle) ? angle[0] : 0,
 			angle = is_vector(angle)? angle[1]-angle[0] : angle,
 			r = get_radius(r=r,d=d),
-			N = max(3, is_undef(N)? ceil(segs(r)*angle/360) : N),
+			N = max(3, is_undef(N)? ceil(segs(r)*abs(angle)/360) : N),
 			arcpoints = [for(i=[0:N-1]) let(theta = start + i*angle/(N-1)) r*[cos(theta),sin(theta)]+cp],
 			extra = wedge? [cp] : []
 		)