X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=earring-stand.scad;h=63cf8c6f5d87ca44c963a4853abb37ed132ca8cc;hp=28024a876f5ed3bba2b98947420128b2b6d30943;hb=fcee4325ff676f7d8070037394a44b960e397acc;hpb=11bbae0f64a33a21098dfd6c6f6001a53cbdd072

diff --git a/earring-stand.scad b/earring-stand.scad
index 28024a8..63cf8c6 100644
--- a/earring-stand.scad
+++ b/earring-stand.scad
@@ -2,6 +2,10 @@
 
 include <commitid.scad>
 
+front_height = 80;
+front_width = 120;
+front_setback = 30;
+
 eclip_inner_rad = 2.5;
 eclip_gap_rad = 0.5;
 eclip_prong_th = 3;
@@ -136,7 +140,53 @@ module TestPlanDemo(){
   color("green") EclipRPlan(test_alpha, test_main_th);
 }
 
+beta = asin(front_setback / front_height);
+
+uf = [-sin(beta), cos(beta)];
+ur = [-uf[0], uf[1]];
+
+pp = [0, 0];
+pq = pp + uf*front_height + ur*eclip_ra_offset;
+pr = [ pq[0] - eclip_base_offset + eclip_wall_offset, 0 ];
+
+module Sketch(){
+  polygon([pq, pp, pr]);
+}
+
+thicks = [ 2, 2, 2 ];
+
+module Joins(alpha, objnum, objnum_f, objnum_m) {
+  echo("Joins",objnum, objnum_f, objnum_m);
+  thm = thicks[objnum_m];
+  if (objnum==objnum_f) {
+    EclipLPlan(alpha);
+    EclipRPlan(alpha, thm);
+  }
+  if (objnum==objnum_m)
+    rotate(alpha)
+      EclipPPlan(thm);
+}
+
+module Object(objnum){
+  echo("Object",objnum);
+  translate(pp)                  Joins(beta, objnum, 0,1);
+  translate(pr) mirror([1,0,0])  Joins(0,    objnum, 0,2);
+  translate(pq) rotate([0,0,90]) Joins(beta, objnum, 2,1);
+}
+
+module Base(){ Object(0); }
+module Front(){ Object(1); }
+module Back(){ Object(2); }
+
+module Demo(){
+  Base();
+  Front();
+  Back();
+}
+
 //PlanDemo();
 //TestBase();
 //TestProtr();
 //TestRAProtr();
+//Sketch();
+Demo();