fairphone-case: introduce lid_edgepart_width

[reprap-play.git] / fairphone-case.scad

diff --git a/fairphone-case.scad b/fairphone-case.scad
index 41bad57660bfe76e488520c12b7fba7705a2dba6..fcc027ed14b9101e588014ddf7c9a9d989d12d1f 100644 (file)
--- a/fairphone-case.scad
+++ b/fairphone-case.scad
@@ -204,6 +204,7 @@ case_lip = 1.25;
 lid_gap_x = 0.25;
 lid_gap_z = 0.25;
 lid_lip = 1.75;
+lid_edgepart_width = 5.0;
 
 catch_slop = 0.50;
 
@@ -270,6 +271,8 @@ prop_caserecess_taper = 0.45; // one side only
 prop_prop_gap = 0.5;
 prop_prong_heel_slope = 0.5;
 
+lid_fold_clearance_antislop = 0.5;
+
 // ---------- calculated ----------
 
 phone_width =  (phone + bumper*2)[0];
@@ -316,7 +319,7 @@ kppa = [ kppb[0], kppf[1] ];
 lpp10 = [ epp5[0] + lid_gap_x, kppc[1] + lid_gap_z ];
 lpp11 = [ lpp10[0],            epp5[1] + lid_gap_z ];
 
-lpp14 = lpp10 + [1,0] * keeper_inner_width;
+lpp14 = lpp10 + [1,0] * max(keeper_inner_width, lid_edgepart_width);
 // exact x posn not very important; must extend past end of keeper
 
 lpp15 = [ lpp14[0],
@@ -408,6 +411,12 @@ chk(hex22, 10.9975);
 chk(hex23, 13.74);
 chk(hex24, 18.75);
 
+lid_fold_clearance_skew =
+  (lpp10[1] - hppB[1]) /
+  (lpp10[0] - hppB[0]);
+
+echo("SK",lid_fold_clearance_skew);
+
 // catch
 
 cppJ = [ epp4[0] + catch_thickness, lpp10[1] ];
@@ -522,11 +531,13 @@ module LidEdgeProfile(){
 }
 
 module LidEdgeFoldClearanceProfile(){
-  polygon([ lpp10 + [0,  -10],
-           lpp11,
-           lpp11 + [20,   0],
-           lpp10 + [20, -10]
-           ]);
+  translate([-lid_fold_clearance_antislop, 0])
+    polygon([ lpp10,
+             lpp11,
+             lpp11 + [-20,  0],
+             lpp11 + [-20, 20],
+             lpp11 + [+20, 20],
+             lpp10 + [+20,  0] ]);
 }
 
 module ButtonCoverProfile(){
@@ -832,7 +843,7 @@ module HingePortion(x0,x1){
     mirror([1,0,0])
     rotate([90,0,-90])
     linear_extrude(height=x1-x0)
-    children(0);
+    children();
 }
 
 module CatchPortion(width){
@@ -1064,7 +1075,7 @@ module LidAdhocMultiprintFrame(phase){
 }
 
 module LidAroundEdges(){
-  AroundEdges(lpp10[1], lpp13[1] - lpp10[1], 0)
+  AroundEdges(lpp15[1], lpp13[1] - lpp15[1], 0)
     children();
 }
 
@@ -1072,8 +1083,19 @@ module Lid(){ ////toplevel
   skew_centre = [0, lpp11[0], lpp11[1]];
   difference(){
     union(){
-      LidAroundEdges()
-       LidEdgeProfile();
+      intersection(){
+       LidAroundEdges()
+         LidEdgeProfile();
+
+       translate(skew_centre)
+         multmatrix([[ 1, 0, 0, 0 ],
+                     [ 0, 1, -lid_fold_clearance_skew, 0 ],
+                     [ 0, 0, 1, 0 ],
+                     [ 0, 0, 0, 1 ]])
+         translate(-skew_centre)
+         LidAroundEdges()
+         LidEdgeFoldClearanceProfile();
+      }
 
       // button covers
       Buttons(){
@@ -1090,7 +1112,10 @@ module Lid(){ ////toplevel
       }
 
       // hinge arms
-      HingePortion(hex20, hex21) HingeLidProfile();
+      HingePortion(hex20, hex21) {
+       LidEdgeProfile();
+       HingeLidProfile();
+      }
 
       // catch
       CatchPortion(catch_width)
@@ -1098,15 +1123,6 @@ module Lid(){ ////toplevel
     }
     Struts(lpp10[0] + strut_min_at_end, lpp13[1], -case_th_lid);
 
-    translate(skew_centre)
-      multmatrix([[ 1, 0, 0, 0 ],
-                 [ 0, 1, 2, 0 ],
-                 [ 0, 0, 1, 0 ],
-                 [ 0, 0, 0, 1 ]])
-      translate(-skew_centre)
-      LidAroundEdges()
-      LidEdgeFoldClearanceProfile();
-
     // screw holes in the hinge arms
     HingeScrews();