From 5980d4a6d0f40119a633020146b861a805b108c8 Mon Sep 17 00:00:00 2001
From: Michael Krelin <hacker@klever.net>
Date: Thu, 07 Jan 2016 17:31:31 +0000
Subject: feet

---
diff --git a/delta.jscad b/delta.jscad
index b718fd4..fa33a0d 100644
--- a/delta.jscad
+++ b/delta.jscad
@@ -31,6 +31,14 @@ var CONFIG = {
   hole_spacing: { x: 115, y: 92 },
   h: 30
  },
+ foot: {
+  d: 20*Math.sqrt(2), h: 30,
+  bolt: { d:5, l: 19, hd: 10 },
+  margin: 2.5,
+  nut: { d: 8.6 /* TODO: */, h: 3.5 },
+  shell: 4,
+  zscalefactor: 1.6
+ },
  hotend: {
   h: 62.4, 			// full assembly height
   groove: { d:12, h:6 }, 	// grove diameter and height
@@ -82,7 +90,8 @@ var CONFIG = {
  color: {
   extrusion: [0.8, 0.8, 0.8, 0.8],
   pcb: [ 0, 0.3, 0.2, 0.8 ],
-  bulk: [ .9, .9, .9, .2 ]
+  bulk: [ .9, .9, .9, .2 ],
+  parts: [ 0, 0.8, 0, 0.9 ]
  }
 };
 
@@ -584,6 +593,38 @@ function duet() {
  return rv;
 }
 
+function foot() {
+ var F = CONFIG.foot;
+ var br = F.bolt.hd/2+F.margin;
+ var bh = F.zscalefactor*Math.sqrt(Math.pow(F.d/2,2)-Math.pow(br,2));
+ var th = F.h-bh;
+ var r = 2*F.d;
+ var rv = CSG.sphere({ // botom contorted sphere
+  center: [0,0,0], radius: F.d/2, resolution: r
+ }).scale([1,1,F.zscalefactor]).translate([0,0,bh]).union(CSG.cylinder({ // top hat
+  start: [0,0,bh], end: [0,0,F.h], radius: F.d/2, resolution: r
+ })).intersect(CSG.cylinder({ // cut off excess
+  start: [0,0,0], end: [0,0,F.h], radius: F.d
+ })).subtract([
+   CSG.cylinder({ // bolt hole
+   start: [0,0,-1], end: [0,0,F.h+1], radius: F.bolt.d/2+PRINT.slide_tolerance
+  }), CSG.cylinder({ // nut hole
+   start: [0,0,F.h-F.nut.h-PRINT.play_tolerance],
+   end: [0,0,F.h],
+   radius: F.nut.d/2+PRINT.slide_tolerance, resolution: 6
+  }), CSG.cylinder({ // bolthead/washer hole
+   start: [0,0,-1], end: [0,0,F.h-F.nut.h-PRINT.play_tolerance-F.shell],
+   radius: F.bolt.hd/2+PRINT.play_tolerance
+  })
+ ]).union(CSG.cylinder({ // bridging patch
+  start: [0,0,F.h-F.nut.h-PRINT.play_tolerance-PRINT.layer_height],
+  end: [0,0,F.h-F.nut.h-PRINT.play_tolerance],
+  radius: F.nut.d/2
+ }));
+ rv.properties.P = new CSG.Connector([0,0,F.h],[0,0,-1],[1,0,0]);
+ return rv.setColor(CONFIG.color.parts);
+}
+
 function refaxes(o) {
  if(!o) o = {};
  var l = o.l||20, g = o.g||0.7;
@@ -600,6 +641,7 @@ function P(x) {
 
 var PARTS = {
  wip: function(params) {
+  return foot();
   return union(base_extrusions(),column_extrusions(),duet());
  }
 };
--
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