fairphone-case: shear the button cover legs to fix case folding bug

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

diff --git a/fairphone-case.scad b/fairphone-case.scad
index 9827a7ab856c7b90d0251956c3ad9173405d0f24..84ae371420c2e6c3ce5520c1d94983793bfaf5bb 100644 (file)
--- a/fairphone-case.scad
+++ b/fairphone-case.scad
@@ -561,6 +561,10 @@ module ButtonPlan(l, deep, cut){
   I0 = [ E0[0], H[1] ];
   I1 = [ E1[0], H[1] ];
 
+  multmatrix([[ 1, $button_plan_shear ? 0.4 : 0, 0 ],
+             [ 0,1,0 ],
+             [ 0,0,1 ],
+             ]){
   hull(){
     for (m=[0,1]) mirror([m,0])
       circleat(H, r0 - epsilon);
@@ -578,6 +582,7 @@ module ButtonPlan(l, deep, cut){
       circleat(D, r0 + epsilon);
     }
   }
+  }
 }
 
 module CatchCatchProfile(){
@@ -688,6 +693,7 @@ module SideButton(y, y_ref_sign, l, suppress_over_keeper=0){
 
 module LidButtonishLeg(y, y_ref_sign, l=buttonishleg_default_l_is_fudge) {
   $button_leg_only = true;
+  $button_plan_shear = true;
   SideButton(y, y_ref_sign, l) children();
 }