X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=fairphone-case.scad;h=b29207d96b841441403f846dd4b75aba83266e76;hb=c73e8d8c7a09210af369cc6c781e3467724260c0;hp=f0de5d9a390753e2c801652eef38be31dc70f08f;hpb=8ced2770b6f4c78ffc826cb1535bab532af2da22;p=reprap-play.git

diff --git a/fairphone-case.scad b/fairphone-case.scad
index f0de5d9..b29207d 100644
--- 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;
@@ -27,8 +27,9 @@ case_struts_width = 0.10;
 
 keeper_th_z = 0.75;
 keeper_th_x = 0.75;
-keeper_inner_width = 1.75;
-keeper_inner_height = 1.75;
+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;
@@ -44,6 +45,8 @@ lid_lip = 1.75;
 $fa = 5;
 $fs = 0.1;
 
+button_l_fudge = 4.5;
+
 // ---------- calculated ----------
 
 // ----- could be changed -----
@@ -94,8 +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(){
@@ -138,19 +142,26 @@ module ButtonCoverProfile(){
   }
 }
 
-module ButtonPlan(l, bigger, d_D1_y){
+module ButtonPlan(l, deep, cut){
+  bigger =
+    (deep ? lid_buttoncover_overlap : 0) +
+    (cut  ? 0 : -lid_buttoncover_gap);
+
+  d_D1_y =
+    (cut  ? 0 : lid_buttoncover_gap);
+
   C = [0,0]; // by definition
   T = [ 0, epp4[1] ];
   G = T + [0,10];
-  B0 = T + [0,-1] * button_cutout_depth;
+  B0 = C + [0,-1] * button_cutout_depth;
   r0 = 0.5 * (T[1] - B0[1]);
-  A = [  -l/2 + r0, 0.5 * (T[1] + B0[1]) ];
+  A = [  -(l + button_l_fudge)/2 + r0, 0.5 * (T[1] + B0[1]) ];
   r1 = r0 + bigger;
   // | D1 - A | = r1 * 2
   // D1_y = T_y - r1 + d_D1_y
   // =>    4 * r1^2   =  (r1-r0 + d_D1_y)^2 + (D1_x - A_x)^2
   // =>    D1_x =  A_x + v/~ [  4 * r1^2   -   (r1-r0 + d_D1_y)^2 ]
-  D1  = [ A[0] + sqrt( 4*r1*r1 - pow(bigger + d_D1_y, 2) ),
+  D1  = [ A[0] - sqrt( 4*r1*r1 - pow(bigger + d_D1_y, 2) ),
 	  T[1] - r1 + d_D1_y ];
   E1  = 0.5 * (D1 + A);
   F1  = D1 + [0,10];
@@ -229,6 +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();
@@ -243,7 +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])
@@ -274,15 +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);
   }
 }
 
@@ -347,19 +362,17 @@ module Keeper(){ ////toplevel
     OneKeeper();
 }
 
-module ButtonPlanForDemo(colour, z, gap, overlap){
+module ButtonPlanForDemo(colour, z, deep, cut){
   color(colour)
     translate([0,0,z])
-    ButtonPlan(8,
-	       lid_buttoncover_gap * gap +
-	       lid_buttoncover_overlap * overlap,
-	       lid_buttoncover_gap * (1-gap));
+    ButtonPlan(8, deep, cut);
 }
 
 module DemoProfiles(){ ////toplevel
   LidEdgeProfile();
   %EdgeProfile();
   KeeperProfile();
+  translate([0,0,-1]) color("black") KeeperProfile(1);
 
   translate([20,0]) {
     LidEdgeProfile();
@@ -375,10 +388,9 @@ module DemoProfiles(){ ////toplevel
   }
 
   translate([-20,0]) {
-    ButtonPlanForDemo("blue",    0, 0,0);
-    ButtonPlanForDemo("red",    -1, 1,0);
-    ButtonPlanForDemo("yellow", -2, 0,1);
-    ButtonPlanForDemo("blue",   -3, 1,1);
+    ButtonPlanForDemo("grey", -1, 0,1);
+    ButtonPlanForDemo("blue", -2, 1,0);
+    ButtonPlanForDemo("red",  -3, 1,1);
   }
 }