2020 extrusion

1 files changed, 72 insertions, 0 deletions

diff --git a/delta.jscad b/delta.jscad
index 7c6f35f..8cf6ca6 100644
--- a/delta.jscad
+++ b/delta.jscad
@@ -452,2 +452,74 @@ function getParameterDefinitions() {
 var FOURWINDS = [0,90,180,270];
+
+var E2020 = {
+ outer: 20, thickness: 1.8,
+ roundius: 1, centerhole: 5,
+ slot_width: 6,
+ T: { width: 10, thickness: 1.5, depth: 6.5 },
+
+ extrusion: function(o) {
+  if(!o) o = {};
+  var e = o.extrusion || this;
+  var l = o.l||5;
+  var iy = e.outer/2-e.T.depth;
+  var ix = e.T.width/2-(e.outer/2-iy-e.thickness-e.T.thickness);
+  var rv = CAG.roundedRectangle({
+   corner1: [-e.outer/2,-e.outer/2], corner2: [e.outer/2,e.outer/2],
+   roundradius: e.roundius
+  }).subtract(
+   FOURWINDS.map(function(w) {
+    return CAG.fromPoints([
+     [  e.slot_width/2,e.outer/2+1],
+     [  e.slot_width/2,e.outer/2-e.thickness],
+     [  e.T.width/2,e.outer/2-e.thickness],
+     [  e.T.width/2,e.outer/2-e.thickness-e.T.thickness],
+     [  ix, iy ],
+     [ -ix, iy ],
+     [ -e.T.width/2,e.outer/2-e.thickness-e.T.thickness],
+     [ -e.T.width/2,e.outer/2-e.thickness],
+     [ -e.slot_width/2,e.outer/2-e.thickness],
+     [ -e.slot_width/2,e.outer/2+1],
+    ]).rotateZ(w);
+   })
+  ).subtract(CAG.circle({
+   center: [0,0], radius: e.centerhole/2
+  })).extrude({offset:[0,0,l]});
+  rv.properties.c_top=rv.properties.c_left
+   = new CSG.Connector([0,0,l],[0,0,-1],[1,0,0]);
+  rv.properties.c_bottom=rv.properties.c_right
+   = new CSG.Connector([0,0,0],[0,0,1],[1,0,0]);
+  rv.properties.P = new CSG.Connector([0,0,0],[0,0,1],[1,0,0]);
+  return rv;
+ },
+
+ cap: function extrusion_cap(o) {
+  if(!o) o = {};
+  var e = o.extrusion || this;
+  var thickness = o.thickness||2, l = o.l||5;
+  var rv = CSG.roundedCube({
+   corner1: [-e.outer/2,-e.outer/2,thickness],
+   corner2: [e.outer/2,e.outer/2,0],
+   roundradius: [e.roundius,e.roundius,0]
+  });
+  var fw = [0,90,180,270]; // four winds
+  var iy = e.outer/2-e.T.depth;
+  var ix = e.T.width/2-(e.outer/2-iy-e.thickness-e.T.thickness);
+  rv = rv.union(fw.map(function(w) {
+   return CAG.fromPoints([
+    [  e.slot_width/2,e.outer/2],
+    [  e.slot_width/2,e.outer/2-e.thickness],
+    [  e.T.width/2,e.outer/2-e.thickness],
+    [  e.T.width/2,e.outer/2-e.thickness-e.T.thickness],
+    [  ix, iy ],
+    [ -ix, iy ],
+    [ -e.T.width/2,e.outer/2-e.thickness-e.T.thickness],
+    [ -e.T.width/2,e.outer/2-e.thickness],
+    [ -e.slot_width/2,e.outer/2-e.thickness],
+    [ -e.slot_width/2,e.outer/2],
+   ]).extrude({offset:[0,0,l+thickness]}).rotateZ(w);
+  }));
+  rv.properties.P = new CSG.Connector([0,0,0],[0,0,1],[1,0,0]);
+  return rv;
+ }
+};
 function main(params) {