simplify code: build half, then mirror it

1 files changed, 24 insertions, 21 deletions

diff --git a/lampenhalter.scad b/lampenhalter.scad
index b70a3fd..1d5777f 100644
--- a/lampenhalter.scad
+++ b/lampenhalter.scad
@@ -33,26 +33,29 @@ module side() {
         polygon([[0,0], [0,h], [w2,h], [w2,h-d+s], [d,h-d], [d,0]]);
 }
 
-difference() {
-  union() {
-    // base plate
-    cube([w, t, d]);
-
-    // back
-    cube([w, d, h]);
-
-    // sides and top
-    side();
-    translate([w, 0, 0]) mirror() side();
-  }
-  union() {
-    // retainer hole
-    translate([(w-aw)/2, t-at-ad, 0]) cube([aw, at, 2*d]);
-
-    // round vertical corners
-    translate([0, 0, 0]) rotate(a=180) round_corner(r=cr, h=h);
-    translate([w, 0, 0]) rotate(a=270) round_corner(r=cr, h=h);
-    translate([w, t, 0]) rotate(a=0  ) round_corner(r=cr, h=h);
-    translate([0, t, 0]) rotate(a=90 ) round_corner(r=cr, h=h);
+module half() {
+  translate([-w/2, 0, 0])
+  difference() {
+    union() {
+      // base plate
+      cube([w/2, t, d]);
+
+      // back
+      cube([w/2, d, h]);
+
+      // sides and top
+      side();
+    }
+    union() {
+      // retainer hole
+      translate([(w-aw)/2, t-at-ad, 0]) cube([aw/2, at, 2*d]);
+
+      // round vertical corners
+      translate([0, 0, 0]) rotate(a=180) round_corner(r=cr, h=h);
+      translate([0, t, 0]) rotate(a=90 ) round_corner(r=cr, h=h);
+    }
   }
 }
+
+half();
+mirror() half();