X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=fairphone-case.scad;h=a9f199a365a0543bb834ac82ea004c7043bb5773;hp=94f3b25948d5793e0b81731aa2f28ff016652f4f;hb=f72bb4bf9bf38fdbf4664fa43fbcb091ed4b19ad;hpb=8b5a0f561c1bb4906ebae69f6acfb5fcb7dbca03

diff --git a/fairphone-case.scad b/fairphone-case.scad
index 94f3b25..a9f199a 100644
--- a/fairphone-case.scad
+++ b/fairphone-case.scad
@@ -5,6 +5,8 @@ phone_width = 76.75;
 
 phone_cnr_rad = 6.0;
 
+button_cutout_depth = 9;
+
 phone_edge_thick = 9.0;
 phone_total_thick = 12.0;
 phone_backside_slope_inner = 1.5; // larger means shallower
@@ -19,8 +21,8 @@ case_th_side = 2;
 case_th_lip = 1.2;
 
 case_struts_count = 6;
-case_struts_solid_below = 0.5;
-case_struts_solid_above = 0.5;
+case_struts_solid_below = 0.75;
+case_struts_solid_above = 1.00;
 case_struts_width = 0.10;
 
 keeper_th_z = 0.75;
@@ -42,7 +44,13 @@ lid_lip = 1.75;
 $fa = 5;
 $fs = 0.1;
 
-// calculated
+button_l_fudge = 4.5;
+
+// ---------- calculated ----------
+
+// ----- could be changed -----
+lid_buttoncover_gap = lid_gap_x;
+lid_buttoncover_overlap = case_th_lip + keeper_gap_z_top;
 
 phone_backside_slope_thick = phone_total_thick - phone_edge_thick;
 
@@ -69,6 +77,18 @@ lpp11 = [ lpp10[0],            epp5[1] + lid_gap_z ];
 lpp12 = [ epp4[0] + lid_lip,   lpp11[1] ];
 lpp13 = [ lpp12[0],            lpp12[1] + lid_lip ];
 
+// button profile
+bppM = epp4 + [0,5];
+bppN = [ 0.5 * (epp0[0] + epp4[0]), bppM[1] ];
+bppR = [ bppN[0] + lid_buttoncover_gap, -button_cutout_depth ];
+bppS = [ epp1[0], bppR[1] ];
+bppQ = [ bppM[0], bppR[1] - lid_buttoncover_overlap ];
+bppP = bppQ + [0,1] * lid_buttoncover_gap;
+bppO = [ bppN[0], bppP[1] ];
+bppL = lpp10 + [5,0];
+bppK = [ bppL[0], bppN[1] ];
+bppJ = [ bppN[0], bppL[1] ];
+
 module rectfromto(a,b) {
   ab = b - a;
   translate([min(a[0], b[0]), min(a[1], b[1])])
@@ -110,6 +130,58 @@ module LidEdgeProfile(){
   }
 }
 
+module ButtonCoverProfile(){
+  intersection(){
+    polygon([ bppM, bppP, bppO, bppJ, bppL, bppK ]);
+    hull(){
+      EdgeProfile();
+      LidEdgeProfile();
+    }
+  }
+}
+
+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 = C + [0,-1] * button_cutout_depth;
+  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) ),
+	  T[1] - r1 + d_D1_y ];
+  E1  = 0.5 * (D1 + A);
+  F1  = D1 + [0,10];
+
+  hull(){
+    for (m=[0,1]) mirror([m,0])
+      circleat(A, r1);
+  }
+  for (m=[0,1]) mirror([m,0]) {
+    difference(){
+      polygon([ E1,
+		A,
+		B0,
+		G,
+		F1,
+		D1
+		]);
+      circleat(D1, r1);
+    }
+  }
+}
+
 module CaseBase_rhsflip(yn=[0,1]) {
   for (rhs=yn) {
     translate([phone_width/2, 0, 0])
@@ -245,6 +317,16 @@ module TestWidth(){ ////toplevel
   }
 }
 
+module TestLidWidthPrint(){ ////toplevel
+  rotate([0,180.0])
+    intersection(){
+      Lid();
+      translate([-30, -(phone_height - 25), -20])
+	mirror([0, 1, 0])
+	cube([200, 50, 40]);
+    }
+}
+
 module TestCamera(){ ////toplevel
   intersection(){
     Case();
@@ -274,10 +356,35 @@ module Keeper(){ ////toplevel
     OneKeeper();
 }
 
+module ButtonPlanForDemo(colour, z, deep, cut){
+  color(colour)
+    translate([0,0,z])
+    ButtonPlan(8, deep, cut);
+}
+
 module DemoProfiles(){ ////toplevel
   LidEdgeProfile();
   %EdgeProfile();
   KeeperProfile();
+
+  translate([20,0]) {
+    LidEdgeProfile();
+    %EdgeProfile();
+
+    demopoint_QR = [ bppS[0], bppQ[1] - 0.1];
+  
+    color("blue") ButtonCoverProfile();
+    color("red") {
+      rectfromto(bppQ, demopoint_QR);
+      rectfromto(bppR, demopoint_QR);
+    }
+  }
+
+  translate([-20,0]) {
+    ButtonPlanForDemo("grey", -1, 0,1);
+    ButtonPlanForDemo("blue", -2, 1,0);
+    ButtonPlanForDemo("red",  -3, 1,1);
+  }
 }
 
 //EdgeProfile();