earring-stand: adjust thinner prongs (from v1)

[reprap-play.git] / earring-stand.scad

diff --git a/earring-stand.scad b/earring-stand.scad
index 08f0701ebc0d5281e7efc655c37e415f4bca7fc4..b1f03df9b9f80fcf6552322a3ded51802382fe2a 100644 (file)
--- a/earring-stand.scad
+++ b/earring-stand.scad
@@ -1,16 +1,28 @@
 // -*- C -*-
 
+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;
+eclip_gap_rad = 0.1;
+eclip_prong_th = 2.25;
 eclip_outer_strt = 0.5;
 eclip_inner_xstrt = 0.5;
 
 eclip_ult_angle = 44;
 eclip_base_epsilon = 0.5;
 
+eclip_each_len = 6;
+eclip_each_every = 15;
+
 test_alpha = 10;
 test_main_th = 1.5;
+test_eclips = 5;
+test_base_th = 2.5;
+test_len = eclip_each_len + eclip_each_every*(test_eclips-1);
 
 // calculated
 
@@ -27,6 +39,11 @@ ppxl = -(r0 / sqrt(2)) + (eclip_inner_strt / sqrt(2));
 
 rgap = eclip_gap_rad;
 
+eclip_base_offset = r1;
+eclip_wall_offset = -ppxl;
+
+eclip_ra_offset = r2 - 0.1;
+
 $fn=70;
 
 module EclipLPlanCore(alpha){
@@ -71,6 +88,107 @@ module EclipPPlan(main_th){
   translate([ppxl, 0]) square([main_th, r2]);
 }
 
-color("red") EclipLPlan(test_alpha);
-color("blue") rotate(test_alpha) EclipPPlan(test_main_th);
-color("green") EclipRPlan(test_alpha, test_main_th);
+module TestBase(){ ////toplevel
+  translate([0,0, eclip_base_offset]){
+    for (i=[0 : 2: test_eclips-1]) {
+      translate([0, i*eclip_each_every])
+       rotate([90,0,0])
+       linear_extrude(height=eclip_each_len)
+       EclipLPlan(test_alpha);
+    }
+    for (j=[1 : 2: test_eclips-2]) {
+      translate([0, j*eclip_each_every])
+       rotate([90,0,0])
+       linear_extrude(height=eclip_each_len)
+       EclipRPlan(test_alpha, test_main_th);
+    }
+  }
+  translate([-r2, -eclip_each_len, -test_base_th]){
+    difference(){
+      cube([r2*2,
+           test_len,
+           test_base_th]);
+      mirror([0,0,1]) Commitid_BestCount_M([r2*2, test_len]);
+    }
+  }
+}
+
+module TestProtr(){ ////toplevel
+  difference(){
+    translate([0,0, test_main_th - eclip_wall_offset])
+      rotate([0,90,0])
+      linear_extrude(height=test_len)
+      EclipPPlan(test_main_th);
+    mirror([0,0,1]) Commitid_BestCount_M([test_len, r2]);
+  }
+}
+
+module TestRAProtr(){ ////toplevel
+  rotate([-90,0,0]) TestProtr();
+  mirror([1,0,0])
+    translate([-test_len,
+              -r2,
+              -(eclip_ra_offset + test_base_th)])
+    cube([test_len,
+         r2*2,
+         test_base_th]);
+}
+
+module TestPlanDemo(){
+  color("red") EclipLPlan(test_alpha);
+  color("blue") rotate(test_alpha) EclipPPlan(test_main_th);
+  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 ];
+
+//side_origins = [ pp, 
+
+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();