powerbank-bike-clamp: break out z

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/powerbank-bike-clamp.scad b/powerbank-bike-clamp.scad
index 2a755a878f8186848eb3e1bf4f6dea7dcdcc394d..73aa76cc2f5619552fd2d60959b654ce7f3489ad 100644 (file)
--- a/powerbank-bike-clamp.scad
+++ b/powerbank-bike-clamp.scad
@@ -201,10 +201,11 @@ module SomeClamp(hinge_alt=false){
     Screws();
 
     for (i=[0 : hinge_lobes-1]) {
+      z = -clamp_width_actual/2 + i * hinge_stride
+                + (hinge_alt ? hinge_stride/2 : 0);
       translate([0,
                 hinge_y,
-                -clamp_width_actual/2 + i * hinge_stride
-                + (hinge_alt ? hinge_stride/2 : 0)
+                z,
                 ])
        linextr(-hinge_gap_z, hinge_stride/2)
        square(hinge_outer_r*2 + hinge_gap_xy, center=true);