fairphone-case: wip prop profile, fixes

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

diff --git a/fairphone-case.scad b/fairphone-case.scad
index 3f47c9f173a1f2aab61f9fb6ebf4bc9bf121dd7e..1d60ea04bec143cceb44df17885722c143ba69b0 100644 (file)
--- a/fairphone-case.scad
+++ b/fairphone-case.scad
@@ -119,6 +119,7 @@ prop_main_th = 3;
 prop_taper_len = 6;
 prop_main_width = 3;
 prop_side_gap = 0.75; // each side
+prop_lidrecess_behind = 0.75;
 prop_caserecess_behind = 0.75;
 prop_caserecess_taper = 0.35; // one side only
 prop_prop_gap = 0.5;
@@ -270,7 +271,9 @@ prcp1 = [ epp2o[0],
 prl_r10 = prop_end_dia/2;
 prl_r10o = prl_r10 + prop_recess_slop;
 
-prlp10 = lpp10 + [1,1] * prl_r10o;
+prlp10 = lpp10 + [1,1] * prl_r10o
+  + [1,0] * prop_lidrecess_behind
+  + [0,1] * prop_recess_under;
 
 // prop
 
@@ -634,6 +637,9 @@ module PropProfile(gamma, cut=0){ ////toplevel
   theta = 90 - alpha;
   beta = 180 - alpha - gamma;
   psi = 90 - beta + atan(prop_caserecess_taper);
+
+  echo("abc", a,b,c);
+
   prpv1 = [ sin(psi), cos(psi) ];
 
   prpp7 = [0, c + (lpp13[1] - prpp10[1]) ];
@@ -643,18 +649,21 @@ module PropProfile(gamma, cut=0){ ////toplevel
 
   prpp1 = prpp7 + [1,0] *
     // this is approximate, but will do
-    (prop_main_th/2 + prop_prop_gap + prcp1[0] - prcp1[1]);
+    (prop_main_th/2 + prop_prop_gap + prcp1[0] - epp4[0]);
   prpp3 = prpp1 + [ -prp_r1,
                    (prcp2[1] - prcp1[1]) - prop_prop_gap ];
+  prp_r8 = prop_main_th;
   prpp4 = [ prop_main_th/2, prpp3[1] ];
-  prp_r5 = prop_end_dia/2;
-  prpp5 = [ prpp1[0], prpp3[1] - prop_prong_h + prp_r5 ];
+  prp_r5 = prp_r8;
+  prpp5 = [ prpp1[0] + prp_r1 - prp_r5,
+           prpp3[1] - prop_prong_h + prp_r5 ];
   prpp6 = prpp4 + [0,-1] * (prop_prong_h +
          prop_prong_heel_slope * (prpp5[0] - prpp4[0]));
-  prp_r8 = prop_main_th/2;
   prpp8 = prpp4 + [0,-1] * prp_r8;
   prpp9 = prpp8 + [-1,0] * prp_r8;
-  prpp12 = prpp3 + [0,1] * prop_end_dia;
+  prpp12 = prpp3 + [1,0] * prop_end_dia;
+
+  //#circleat(prpp5,1);
 
   if (!cut) {
     hull(){
@@ -664,14 +673,18 @@ module PropProfile(gamma, cut=0){ ////toplevel
          rectfromto([-20,-0], [20,20]);
         }
       rectfromto(prpp6, prpp9);
-      circleat(prpp5, prp_r5);
+      translate(prpp5) intersection(){
+       circle(prp_r5);
+       rectfromto([-10,-10], [10,0]);
+      }
       rectfromto(prpp12 + [0,-0.1], prpp3);
     }
-    hull(){
+    %hull(){
       circleat(prpp1, prp_r1);
       rectfromto(prpp12 + [0,-0.1], prpp3);
     }
   }
+  // main shaft
   rotate([0,0, cut ? -theta : 0]){
     hull(){
       extra = cut ? prop_recess_slop : 0;
@@ -1091,8 +1104,13 @@ module DemoProfiles(){ ////toplevel
   }
 
   translate([40,-30]) {
-    %LidEdgeProfile();
-    PropProfile(10, 0);
+    difference(){
+      %LidEdgeProfile();
+      //translate(prlp10)
+       //PropProfile(10, 1);
+    }
+    translate(prlp10)
+      PropProfile(10, 0);
   }
 }