extended U from other projects

1 files changed, 29 insertions, 0 deletions

diff --git a/delta.jscad b/delta.jscad
index 326d172..35a777c 100644
--- a/delta.jscad
+++ b/delta.jscad
@@ -125,49 +125,78 @@ var CD = {
   // 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;
  })()
 };
 console.log(CONFIG); console.log(CD);
 
 var U = {
  hypotenuse: function(a,b) {
   return Math.sqrt(Math.pow(a,2)+Math.pow(b,2));
  },
  peek: function(x,m) {
   console.log(x,m);
   return x;
+ },
+ axes: function U_axes(o) {
+  if(!o) o = {};
+  var l = o.l||20, g = o.g||0.7;
+  return union([
+   CSG.roundedCylinder({start:[0,0,0],end:[l,0,0]}).setColor([1,0,0,g]),
+   CSG.roundedCylinder({start:[0,0,0],end:[0,l,0]}).setColor([0,1,0,g]),
+   CSG.roundedCylinder({start:[0,0,0],end:[0,0,l]}).setColor([0,0,1,g])
+  ]);
+ },
+ pextract: function U_pextract(a,pn) { // TODO: monkeypatch Array
+  return a.map(function(x){return x[pn]});
+ },
+ hole: function U_hole(o) {
+  var r = o.r||o.radius||(o.d/2)||(o.diameter/2);
+  var n = Math.max(Math.round(4*r),4);
+  return CSG.cylinder({
+   start: o.start, end: o.end,
+   radius: r/Math.cos(Math.PI/n),
+   resultion: n
+  });
+ },
+
+ upright: function U_upright() { return new CSG.Connector([0,0,0],[0,0,1],[1,0,0]) },
+ downright: function U_downright() { return new CSG.Connector([0,0,0],[0,0,-1],[1,0,0]) },
+ P: function U_P(x) {
+  if(!x.properties.P) return x;
+  return x.connectTo(x.properties.P,U.upright(),false,0);
  }
+ 
 };
 
 /* {h:,w:} */
 function nut(o) {
  var rv = CSG.cylinder({
   start:[0,0,0],end:[0,0,o.h],
   radius: o.w/2/Math.cos(Math.PI/6),
   resolution: 6
  });
  rv.properties.axis_connector = new CSG.Connector([0,0,0],[0,0,1],[0,1,0]);
  return rv;
 }
 
 var E3DV6 = {
  dimensions: {
   big_d: 22.3,
 
  },
  heatsink: function() {
   var fn = 16;
   var z=0;
   var unite = [ {d:16,h:3.7},{d:12,h:6},{d:16,h:3} ].map(function(x) {
    return CSG.cylinder({
     start: [0,0,z], end: [0,0,z-=x.h],