duetholder math

1 files changed, 10 insertions, 0 deletions

diff --git a/delta.jscad b/delta.jscad
index 4716875..a1be156 100644
--- a/delta.jscad
+++ b/delta.jscad
@@ -114,12 +114,22 @@ var CD = {
     rv.outer_inscription_r-CONFIG.extrusion.w/2;
   rv.inner_inscription_r =
     rv.outer_inscription_r-CONFIG.extrusion.w/2;
   // TODO: properly calculate
   rv.column_r = rv.circumscription_r - 48.29;
   return rv;
+ })(),
+ duetholder: (function() {
+  var rv = {};
+  var s = CONFIG.base.sl;
+  var l = CONFIG.duet.hole_spacing.x;
+  var w = CONFIG.duet.hole_spacing.y;
+  var h = s*Math.cos(Math.PI/6);
+  var h1 = h*(1-l/s);
+  rv.distance = (h1-w)/3; // hole to side
+  return rv;
  })()
 };
 
 var U = {
  hypotenuse: function(a,b) {
   return Math.sqrt(Math.pow(a,2)+Math.pow(b,2));