fairphone-case: break out Struts (nfc)

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

diff --git a/fairphone-case.scad b/fairphone-case.scad
index 1785a115230b9195720209b941f22916706d2090..b29207d96b841441403f846dd4b75aba83266e76 100644 (file)
--- a/fairphone-case.scad
+++ b/fairphone-case.scad
@@ -1,7 +1,7 @@
 // -*- C -*-
 
 phone_height = 146.5 - .80;
-phone_width = 76.75;
+phone_width = 76.75 - .50;
 
 phone_cnr_rad = 6.0;
 
@@ -13,7 +13,7 @@ phone_backside_slope_inner = 1.5; // larger means shallower
 phone_backside_slope_outer = 1.0; // larger means shallower
 
 camera_pos_tl = [  7.0, 13.0 ]; // measured from tl corner
-camera_pos_br = [ 24.0, 39.5 ]; // tl/br as seen from back
+camera_pos_br = [ 22.85,37.85]; // tl/br as seen from back
 
 case_th_bottom = 2.5;
 case_th_lid = 2.5;
@@ -29,6 +29,7 @@ keeper_th_z = 0.75;
 keeper_th_x = 0.75;
 keeper_inner_width = 2.75;
 keeper_inner_height = 2.75;
+keeper_slant_slope = 2; // larger means steeper
 
 keeper_gap_z_top = 0.25;
 keeper_gap_z_bot = 0.75;
@@ -96,8 +97,9 @@ module rectfromto(a,b) {
 }
 module circleat(c,r) { translate(c) circle(r); }
 
-module KeeperProfile(){
-  polygon([kppe, kppd, kppc, kppb, kppa, kppf]);
+module KeeperProfile(slant=0){
+  use_e = kppe + [0,-1] * slant * keeper_inner_width / keeper_slant_slope;
+  polygon([use_e, kppd, kppc, kppb, kppa, kppf]);
 }
 
 module EdgeProfile(){
@@ -238,6 +240,18 @@ module AroundEdges(fill_zstart, fill_th, fill_downwards=0){
               [phone_width, -phone_height] + [-1,+1] * phone_cnr_rad);
 }
 
+module Struts(z_min, th){
+  for (i= [1 : 1 : case_struts_count]) {
+    translate([0,
+              -phone_height * i / (case_struts_count+1),
+              z_min + case_struts_solid_below])
+      linear_extrude(height= th
+                    -(case_struts_solid_below+case_struts_solid_above))
+      rectfromto([               epp2i[0], -0.5 * case_struts_width ],
+                [ phone_width - epp2i[0], +0.5 * case_struts_width ]);
+  }
+}
+
 module CaseBase(){
   AroundEdges(epp3[1], case_th_bottom, 1)
     EdgeProfile();
@@ -252,7 +266,7 @@ module Case(){ ////toplevel
       intersection(){
        rotate([90, 0, 0])
          linear_extrude(height = phone_height + phone_cnr_rad * 2)
-         KeeperProfile();
+         KeeperProfile(1);
 
        // outline of the whole case, to stop it protruding
        translate([0,0, -25])
@@ -283,15 +297,7 @@ module Case(){ ////toplevel
       rectfromto(camera_pos_tl, camera_pos_br);
 
     // struts (invisible, because they're buried in the case)
-    for (i= [1 : 1 : case_struts_count]) {
-      translate([0,
-                -phone_height * i / (case_struts_count+1),
-                epp2i[1] - case_th_bottom + case_struts_solid_below])
-       linear_extrude(height= case_th_bottom
-                      -(case_struts_solid_below+case_struts_solid_above))
-       rectfromto([               epp2i[0], -0.5 * case_struts_width ],
-                  [ phone_width - epp2i[0], +0.5 * case_struts_width ]);
-    }
+    Struts(epp2i[1] - case_th_bottom, case_th_bottom);
   }
 }
 
@@ -366,6 +372,7 @@ module DemoProfiles(){ ////toplevel
   LidEdgeProfile();
   %EdgeProfile();
   KeeperProfile();
+  translate([0,0,-1]) color("black") KeeperProfile(1);
 
   translate([20,0]) {
     LidEdgeProfile();