var PRINT = {
 layer_height: 0.2,
 extrusion_width: 0.4,

 fit_tolerance: .2, slide_tolerance: .4, play_tolerance: .6
};

var CONFIG = {
 extrusion: {
  w: 20
 },
 base: {
  el: 240,		// side extrusion length
  sl: 240+2*70,		// triangle side length
  gap: 9		// vertical gap between side extrusions
 },
 column: {
  h: 600		// column height
 },
 heatbed: {
  r: 220/2,		// heatbed radius
  sr: 220/2-4.5,	// radius of the screwholes circle
  h: 3+1.5		// thickness (including insulation)
 },
 glass: {
  r: 195/2,		// glass radius
  h: 3			// glass thickness
 },
 duet: {
  pcb_size: { x: 124, y: 100, z: 1 },
  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,
  foot: { ho: 2.5, hi: 5 }
 },
 hotend: {
  h: 62.4, 			// full assembly height
  groove: { d:12, h:6 }, 	// grove diameter and height
  ungroove: { d:16, above:3.7, below: 3+4 }
 },
 effector: {
  h: 6,
  o: 20,	// offset to the rod mounts line
  rods_apart: 40,
  cone: { shell: 1, angle: Math.PI/6 },
  rodend: {
   joint_w: 7,	// thickness of the joint
   screw_l: 20-1, // 20 with the head
   screw_d: 3
  },
  hotend: { margin: 2 },
  hinge: {
   d: 3, w: 5, margin: 2.5,
   h: 1+(6+3.7)/2, // elevation + grove + top
   e: 1 // elevation
  },
  clamp: {
   shell: 4.6,
   d: 3,
   margin: 2.5,
   split: 0.6
  },
  mswitch: {
   size: [ 19.8, 6, 10 ],
   screw: {
    d: 2, h: 10/2-2,
    s: 1.3, // screw shell
    o: [-9.5/2,9.5/2].map(function(x) {
     return -19.8/2+x;
    })
   },
   switch_x: 2.5
  },
  guide: {
   width: 3, height: 5+1, length: 6
  },
  fanholder: {
   r: 30,
   screw: { d: 3, m: 2.5/*margin*/ },
   w: 3
  }
 },
 nut: { h: 2.3, w: 5.5 },
 color: {
  extrusion: [0.8, 0.8, 0.8, 0.8],
  pcb: [ 0, 0.3, 0.2, 0.8 ],
  bulk: [ .9, .9, .9, .2 ],
  parts: [ 0, 0.8, 0, 0.9 ],
  softparts: [ 0, 0, 0.8, 0.9 ]
 }
};

var CD = {
 base: (function(){
  var rv = {};
  rv.circumscription_r =
   CONFIG.base.sl/2/Math.cos(Math.PI/6);
  rv.outer_inscription_r =
   Math.sqrt(Math.pow(rv.circumscription_r,2)-
    Math.pow(CONFIG.base.sl/2,2));
  rv.mid_inscription_r =
    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;
 })()
};

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;
 }
};

/* {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],
    radius: x.d/2, resolution: fn
   });
  });
  unite.push(CSG.cylinder({
   start:[0,0,z-=1.5], end:[0,0,z-=1],
   radius: 16/2, resolution: fn
  }));
  for(var i=0;i<11;++i) unite.push(CSG.cylinder({
   start:[0,0,z-=1.5], end:[0,0,z-=1],
   radius: this.dimensions.big_d/2, resolution: fn
  }));
  unite.push(CSG.cylinder({
   start:[0,0,z], end: [0,0,-12.7],
   radiusStart: 10/2, radiusEnd: 8.5/2, /* pretty arbitrary */
   resolution: fn
  }));
  var rv = union(unite);
  rv = rv.subtract([CSG.cylinder({
   start:[0,0,1], end: [0,0,z-1],
   radius: 4.2/2, resolution: fn
  }),CSG.cylinder({
   start:[0,0,1], end: [0,0,-6.7/*somewhat arbitrary*/],
   radius: 8/2, resolution: fn
  }),CSG.cylinder({
   start:[0,0,z-1], end: [0,0,z+14.8],
   radius: 6/2 /*M7*/, resolution: fn
  })]);
  rv.properties.pushfit_connector = new CSG.Connector([0,0,0],[0,0,-1],[1,0,0]);
  rv.properties.heatbreak_connector = new CSG.Connector([0,0,z+14.8],[0,0,-1],[1,0,0]);
  rv.properties.grove_connector = new CSG.Connector([0,0,-3.7-3],[0,0,1],[1,0,0]);
  return rv.setColor([0.8,0.8,0.8,0.9]);
 }
};

var EFFECTOR = {
 /* {sd: screw diameter, l: cone length, s: screw shell, a: angle from axis} */
 cone: function effector_cone(o) {
  var re = o.sd/2+o.s, rs = re+o.l*Math.tan(o.a||(Math.PI/4));
  var rv = CSG.cylinder({
   start: [0,0,0], end: [0,0,o.l],
   radiusStart: rs, radiusEnd: re,
   resolution: Math.floor(rs*2*2)
  }).subtract(CSG.cylinder({
   start:[0,0,-1], end:[0,0,o.l+1], radius: o.sd,
   //resolution: Math.floor(o.sd*2*2)
  }));
  rv.properties.top_connector = new CSG.Connector([0,0,o.l],[0,0,-1],[1,0,0]);
  rv.properties.bottom_connector = new CSG.Connector([0,0,0],[0,0,1],[1,0,0]);
  var nuthole = nut(CONFIG.nut);
  rv = rv.subtract(nuthole.connectTo(
   nuthole.properties.axis_connector, rv.properties.bottom_connector,
   false, 0
  ));
  return rv.intersect(CSG.cylinder({start:[0,0,0],end:[0,0,o.l],radius:6/*TODO:calculate*/}));
 },
 platform_bb: function platform_bb() {
  var e = CONFIG.effector;
  var r = U.hypotenuse(e.rods_apart/2,e.o+e.rodend.screw_d/2+e.cone.shell);
  var rv = CSG.sphere({
   center: [0,0,e.h/2], radius: r,
   resolution: r*2*2
  }).intersect(CSG.cube({
   corner1: [-r,-r,0], corner2: [r,r,e.h]
  }));
  rv.properties.base_connector = new CSG.Connector([0,0,0],[0,0,1],[1,0,0]);
  return rv;
 },
 effector: function effector_effector() {
  var e = CONFIG.effector;
  var conel = e.rodend.screw_l-e.rodend.joint_w;
  var nutr = CONFIG.nut.w/2/Math.cos(Math.PI/6);
  var cone = this.cone({sd:e.rodend.screw_d/2,l:conel,s:e.cone.shell,a:e.cone.angle});
  var rcorner = U.hypotenuse(e.o-e.rodend.screw_d/2-e.cone.shell,e.rods_apart/2)-3.85; //XXX:config/calc
  var ropen = E3DV6.dimensions.big_d/2+e.hotend.margin;
  var rmount = this.rmount = (rcorner+ropen)/2;
  var rv = [];
  for(var a=0;a<360;a+=120) {
   rv.push(union([-1,1].map(function(s) {
    return cone.connectTo(cone.properties.top_connector,
     new CSG.Connector([s*e.rods_apart/2,e.o,e.h/2],[-s,0,0],[0,0,1]),
     false, 0);
   })).union(CSG.cube({
    corner1:[e.rods_apart/2-conel+.1,e.o-nutr,0],
    corner2:[-e.rods_apart/2+conel-.1,
     -rcorner,
     e.h]
   })).rotateZ(a));
  }
  rv.push(CSG.cylinder({
   start:[0,0,0], end:[0,0,e.h],
   radius: U.hypotenuse(e.o-nutr,e.rods_apart/2-conel)
  }));
  rv = union(rv).intersect(this.platform_bb()).subtract(CSG.cylinder({
   start:[0,0,-1], end:[0,0,e.h+1],
   radius: ropen, resolution: ropen*4
  })).subtract([/*0, probe here*/120,240].map(function(x) { /* nut pockets */
   return CSG.cube({
    corner1:[-CONFIG.nut.w/2,0,(e.h-CONFIG.nut.h)/2],
    corner2:[CONFIG.nut.w/2,-rcorner-1,(e.h+CONFIG.nut.h)/2]
   }).union(CSG.cylinder({
    start:[0,-rmount,-1], end:[0,-rmount,e.h+1],
    radius: 3/2 // XXX:
   })).subtract(CSG.cylinder({
    start:[0,-rmount,(e.h+CONFIG.nut.h)/2],
    end:[0,-rmount,(e.h+CONFIG.nut.h)/2+PRINT.layer_height*3/2],
    radius: 3/2+.1
   })).rotateZ(x);
  })).subtract( CSG.cylinder({ // pulldown screw
   start: [0,-rcorner+e.mswitch.size[1]+PRINT.extrusion_width+3/2/*XXX:conf*/,-1],
   end: [0,-rcorner+e.mswitch.size[1]+PRINT.extrusion_width+3/2/*XXX:conf*/,e.h+1],
   radius: 3/2+1 /*XXX: config */
  })).subtract( CSG.cylinder({ /* switch-screw */
   start: [e.mswitch.switch_x,-rcorner+e.mswitch.size[1]/2,-1],
   end: [e.mswitch.switch_x,-rcorner+e.mswitch.size[1]/2,e.h+1],
   radius: e.mswitch.screw.d/2
  }));
  // add hinges
  rv.properties.hinge_connector=new CSG.Properties();
  var hinges_apart=e.rods_apart/2-conel;
  rv = rv.union([-1,1].map(function hinge(s) {
   rv.properties.hinge_connector[s]=new CSG.Connector([s*hinges_apart,e.o,e.h+e.hinge.h],[s,0,0],[0,0,1]);
   return CSG.cube({
    corner1: [s*hinges_apart,e.o-e.hinge.margin-e.hinge.d/2,e.h],
    corner2: [s*(hinges_apart+e.hinge.w),e.o+e.hinge.margin+e.hinge.d/2,e.h+e.hinge.h]
   }).union(CSG.cylinder({
    start: [s*hinges_apart,e.o,e.h+e.hinge.h],
    end: [s*(hinges_apart+e.hinge.w),e.o,e.h+e.hinge.h],
    radius: e.hinge.d/2+e.hinge.margin
   })).subtract(CSG.cylinder({
    start: [s*(hinges_apart-1),e.o,e.h+e.hinge.h],
    end: [s*(hinges_apart+e.hinge.w+1),e.o,e.h+e.hinge.h],
    radius: e.hinge.d/2
   }));
  }));
  // add clamp guides
  var cgrr = e.guide.width/3;
  rv = rv.union([-1,1].map(function guide(s) {
   return CSG.roundedCube({
    center: [s*(e.mswitch.size[0]+PRINT.slide_tolerance+e.guide.width)/2,-rcorner+e.guide.length/2,e.h+e.guide.height/2-cgrr],
    radius: [e.guide.width/2,e.guide.length/2,e.guide.height/2+cgrr],
    roundradius: cgrr
   }).intersect(CSG.cube({
     center: [s*(e.mswitch.size[0]+PRINT.slide_tolerance+e.guide.width)/2,-rcorner+e.guide.length/2,e.h+e.guide.height/2],
     radius: [e.guide.width/2,e.guide.length/2,e.guide.height/2+.1],
     roundradius: cgrr
   }));
  }));
  rv.properties.grove_connector = new CSG.Connector([0,0,e.h+e.hinge.e+6/2],[0,0,1],[1,0,0]);
  rv.properties.rcorner = rcorner;
  return rv.setColor([0.4,0.8,0.4,0.9]);
 },
 hinged: function effector_hinged(o) {
  var e = CONFIG.effector;
  var conel = e.rodend.screw_l-e.rodend.joint_w;
  var hinges_apart = e.rods_apart/2-conel;
  var hhr = e.o-e.hinge.d/2-e.hinge.margin; // hotend holder radius
  var hhh = CONFIG.hotend.groove.h+CONFIG.hotend.ungroove.above;
  var rv = CSG.cylinder({ /* hinge */
   start: [-hinges_apart+PRINT.slide_tolerance,e.o,e.h+e.hinge.h],
   end: [hinges_apart-PRINT.slide_tolerance,e.o,e.h+e.hinge.h],
   radius: e.hinge.d/2+e.hinge.margin
  }).union( /* lower hotend holder */
   CSG.cylinder({
    start: [0,0,e.h+e.hinge.e], end: [0,0,e.h+e.hinge.e+CONFIG.hotend.groove.h],
    radius: hhr
   }).subtract(CSG.cylinder({
    start: [0,0,e.h+e.hinge.e-1], end: [0,0,e.h+e.hinge.e+CONFIG.hotend.groove.h+1],
    radius: CONFIG.hotend.groove.d/2 +PRINT.fit_tolerance
   }))
  ).union( /* upper hotend holder */
   CSG.cylinder({
    start: [0,0,e.h+e.hinge.e+CONFIG.hotend.groove.h],
    end: [0,0,e.h+e.hinge.e+CONFIG.hotend.groove.h+CONFIG.hotend.ungroove.above],
    radius: hhr
   }).subtract(CSG.cylinder({
    start: [0,0,e.h+e.hinge.e+CONFIG.hotend.groove.h-1],
    end: [0,0,e.h+e.hinge.e+CONFIG.hotend.groove.h+CONFIG.hotend.ungroove.above+1],
    radius: CONFIG.hotend.ungroove.d/2 +PRINT.fit_tolerance
   }))
  ).union( /* connect mount with hinge */
   CSG.cube({
    corner1: [-hinges_apart+PRINT.slide_tolerance,CONFIG.hotend.ungroove.d/2+PRINT.fit_tolerance,e.h+e.hinge.e],
    corner2: [hinges_apart-PRINT.slide_tolerance,e.o,e.h+e.hinge.h+e.hinge.d/2+e.hinge.margin]
   })
  ).subtract( /* hinge screwhole */
   CSG.cylinder({
    start: [-hinges_apart-1,e.o,e.h+e.hinge.h],
    end: [hinges_apart+1,e.o,e.h+e.hinge.h],
    radius: e.hinge.d/2
   })
  ).union( /* hold clamp together */
   [-1,1].map(function(s) {
    return CSG.roundedCube({
     corner1: [s*(-hhr-e.clamp.margin*2-e.clamp.d),-e.clamp.shell,e.h+e.hinge.e],
     corner2: [s*(-CONFIG.hotend.ungroove.d/2-PRINT.fit_tolerance),+e.clamp.shell,e.h+e.hinge.e+hhh],
     roundradius: 1.5
    });
   })
  ).subtract( /* screws for holding clamp */
   [-1,1].map(function(s) {
    var nuthole = nut(CONFIG.nut);
    var x = s*(-hhr-e.clamp.margin-e.clamp.d/2);
    return CSG.cylinder({
     start: [x,-e.clamp.shell-1,e.h+e.hinge.e+hhh/2],
     end: [x,e.clamp.shell+1,e.h+e.hinge.e+hhh/2],
     radius: e.clamp.d/2
    }).union(nuthole.connectTo(
     nuthole.properties.axis_connector,
     new CSG.Connector([x,e.clamp.shell,e.h+e.hinge.e+hhh/2],[0,-1,0],[0,0,1]),
     false, 0
    )).union(CSG.cylinder({
     start: [x,-e.clamp.shell-1,e.h+e.hinge.e+hhh/2],
     end: [x,0,e.h+e.hinge.e+hhh/2],
     radius: e.clamp.d/2+PRINT.slide_tolerance
    }));
   })
  );
  var ms = o.microswitch;
  var msedge = o.effector.properties.rcorner;
  var msh = 9.5; // microswitch holes apart
  var mshh = Math.abs(ms.properties.switch_connector.point.z-ms.properties.screw_connector[0].point.z); // microswitch holes height
  rv = rv.union(CSG.cube({ // connect clamp with microswitch
   corner1: [-ms.properties.microswitch.size.x/2,-msedge+.1,e.h+e.hinge.e],
   corner2: [+ms.properties.microswitch.size.x/2,-CONFIG.hotend.ungroove.d/2-PRINT.fit_tolerance,e.h+e.hinge.e+hhh]
  })).union([-msh/2,msh/2].map(function(x) { // shell for microswitch screws
    return CSG.roundedCylinder({
     start: [x,-CONFIG.hotend.ungroove.d/2-PRINT.fit_tolerance-(e.mswitch.screw.d/2+e.mswitch.screw.s),e.h+e.hinge.e+mshh],
     end: [x,-msedge+ms.properties.microswitch.size.y,e.h+e.hinge.e+mshh],
     radius: e.mswitch.screw.d/2+e.mswitch.screw.s
    });
  })).subtract(CSG.cube({ // cut off excess if any
   corner1:[-hhr,-msedge+ms.properties.microswitch.size.y,e.h+e.hinge.e-1],
   corner2:[hhr,-msedge-1,e.h+e.hinge.e+hhh+e.mswitch.screw.d+e.mswitch.screw.s+1]
  })).subtract([-msh/2,msh/2].map(function(x) { return CSG.roundedCylinder({ // screwholes
   start: [x,-CONFIG.hotend.ungroove.d/2-PRINT.fit_tolerance-(e.mswitch.screw.d/2+e.mswitch.screw.s),e.h+e.hinge.e+mshh],
   end: [x,-msedge+ms.properties.microswitch.size.y,e.h+e.hinge.e+mshh],
   radius: e.mswitch.screw.d/2
  })})).subtract(CSG.cylinder({ // pulldown screw
   start:[0,-msedge+ms.properties.microswitch.size.y+3/2/*XXX:config*/+PRINT.extrusion_width,e.h+e.hinge.e-1],
   end:[0,-msedge+ms.properties.microswitch.size.y+3/2/*XXX:config*/+PRINT.extrusion_width,e.h+e.hinge.e+hhh+1],
   radius: 3/2/*XXX:config*/
  }));
  rv.properties.microswitch_screw_connector = new CSG.Properties();
  [-msh/2,msh/2].forEach(function(x,i) {
   rv.properties.microswitch_screw_connector[i] = new CSG.Connector(
    [x,-msedge,e.h+e.hinge.e+mshh],
    [0,1,0], [0,0,-1]
   );
  });
  return rv.setColor([0.3,0.8,0.3,0.9]);
 },
 split_hinged: function effector_split_hinged(hinged) {
  var e = CONFIG.effector;
  var b = hinged.getBounds();
  var ymax = Math.max(Math.abs(b[0].y),Math.abs(b[1].y));
  var zmax = Math.max(b[0].z,b[1].z);
  return [-1,1].map(function(s) {
   return hinged.intersect(CSG.cube({
    corner1: [Math.min(b[0].x,b[1].x)-1,s*e.clamp.split/2,-zmax-1],
    corner2: [Math.max(b[0].x,b[1].x)+1,s*(ymax+1),zmax+1]
   }));
  });
 },
 fanholder: function effector_fanholder() {
  var fh = CONFIG.effector.fanholder;
  var od = fh.screw.d+2*fh.screw.m;
  return linear_extrude({height:fh.w},hull(
   CAG.circle({center:[0,-this.rmount],radius:od/2}),
   CAG.circle({center:[0,-fh.r+od/2+fh.w/2],radius:fh.w/2})
  )).translate([0,0,-fh.w]).union(
   linear_extrude({height:fh.w},hull(
    CAG.circle({center:[fh.w/2,-this.rmount-od/2-fh.w/2],radius:fh.w/2}),
    CAG.circle({center:[od/2,-fh.r],radius:od/2})
   )).rotateY(90).translate([-fh.w/2,0,0])
  ).subtract( CSG.cylinder({
   start: [-fh.w,-fh.r,-od/2],
   end: [fh.w,-fh.r,-od/2],
   radius: fh.screw.d/2
  })).subtract( CSG.cylinder({
   start: [0,-this.rmount,1],
   end: [0,-this.rmount,-fh.w-1],
   radius: fh.screw.d/2
  })).setColor([0.3,0.8,0.3,0.9]).rotateZ(-120);
 }
};

function columns() {
 var rv = [0,1,2].map(function(x) {
  return union(vector_char(0,0,String.fromCharCode('A'.charCodeAt(0)+x)).segments.map(function(x) {
   return rectangular_extrude(x,{w:2,h:1});
  })).center().rotateX(90).translate([0,50,0]).rotateZ(x*120+120);
 });
 return union(rv);
}

function microswitch() {
 var screw_connector = new CSG.Properties();
 var rv = CSG.cube({ center:[0,0,2.5],radius: [19.8/2,6/2,10/2] }).union(
  CSG.cube({ center: [2.5,0.5,6], radius: [2/2,3.5/2,5/2] })
 ).union(
  [-8,-1,8].map(function(x) {
   return CSG.cube({ center:[x,0,0], radius: [0.6/2,3.2/2,13/2] })
  })
 ).subtract(
  [-9.5/2,9.5/2].map(function(x,i) {
   screw_connector[i] = new CSG.Connector([x,6/2,0],[0,-1,0],[0,0,1]);
   return CSG.cylinder({
    start: [x,-4,0], end: [x,4,0],
    radius: 2/2
   })
  })
 );
 rv.properties.switch_connector = new CSG.Connector([2.5,0.5,6+5/2],[0,0,1],[0,-1,0]);
 rv.properties.screw_connector = screw_connector;
 rv.properties.microswitch = new CSG.Properties();
 rv.properties.microswitch.size = new CSG.Vector3D(
  19.8,6,10
 );
 return rv;
}

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.c_midway = new CSG.Connector([0,0,l/2],[0,0,1],[1,0,0]);
  rv.properties.P = new CSG.Connector([0,0,0],[0,0,1],[1,0,0]);
  rv.properties.vitamin = true;
  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;
 }
};

var THREEWINDS = [0,120,240];

function base_sides() {
 return [0,1].map(function(l) {
  return THREEWINDS.map(function(w) {
   var e = E2020.extrusion({l:CONFIG.base.el});
   e = e.connectTo(e.properties.c_midway,
    new CSG.Connector([0,-CD.base.mid_inscription_r,CONFIG.extrusion.w/2],[1,0,0],[0,0,1]),
    false, 0);
   return ( e.translate([0,0,CONFIG.foot.h+l*(CONFIG.extrusion.w+CONFIG.base.gap)])
    .rotateZ(w)
    .setColor(CONFIG.color.extrusion) );
  });
 });
}
function base_extrusions() {
 var rv = union( base_sides().map(function(x){return union(x)}) );
 rv.properties.P = new CSG.Connector([0,0,0],[0,0,1],[1,0,0]);
 return rv;
}

function columns() {
 return THREEWINDS.map(function(w) {
  return (E2020.extrusion({l:CONFIG.column.h})
   .translate([0,CD.base.column_r,CONFIG.foot.h])
   .rotateZ(w).setColor(CONFIG.color.extrusion)
  );
 });
}
function column_extrusions() {
 var rv = union( columns() );
 rv.properties.P = new CSG.Connector([0,0,0],[0,0,1],[1,0,0]);
 return rv;
}

function duet() {
 var C = CONFIG.duet;
 var pholes = new CSG.Properties();
 var hx = C.hole_spacing.x/2;
 var hy = C.hole_spacing.y/2;
 var hh = { nw: [1,-1], ne: [1,1], se: [-1,1], sw: [-1,-1] };
 var holes = [];
 for(w in hh) {
  var h = hh[w],_x=h[0]*hx,_y=h[1]*hy;
  holes.push(CSG.cylinder({start:[_x,_y,-1],end:[_x,_y,C.pcb_size.z+1],radius:3/2}));
  pholes['c_'+w] = new CSG.Connector([_x,_y,0],[0,0,1],[1,0,0]);
 }
 rv = CSG.cube({
  corner1: [-C.pcb_size.x/2, -C.pcb_size.y/2,            0],
  corner2: [ C.pcb_size.x/2,  C.pcb_size.y/2, C.pcb_size.z]
 }).subtract(holes).setColor(CONFIG.color.pcb).union(
  CSG.cube({
   corner1: [-C.pcb_size.x/2,-C.hole_spacing.y/2+3,C.pcb_size.z],
   corner2: [ C.pcb_size.x/2, C.hole_spacing.y/2-3,C.h]
  }).setColor(CONFIG.color.bulk)
 );
 rv.properties.holes = pholes;
 rv.properties.P = new CSG.Connector([0,0,0],[0,0,1],[1,0,0]);
 rv.properties.vitamin = true;
 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.c_column = new CSG.Connector([0,0,F.h],[0,0,1],[1,0,0]);
 rv.properties.P = new CSG.Connector([0,0,F.h],[0,0,-1],[1,0,0]);
 return rv.setColor(CONFIG.color.parts);
}
function foot_foot() {
 // TODO: connect in the altogethernow?
 var F = CONFIG.foot;
 var rv = CSG.cylinder({
  start: [0,0,0], end: [0,0,F.foot.ho],
  radius: F.bolt.hd/2+F.margin
 }).union(CSG.cylinder({
  start: [0,0,0], end: [0,0,F.foot.ho+F.foot.hi],
  radius: F.bolt.hd/2+PRINT.play_tolerance-PRINT.fit_tolerance
 }));
 rv.properties.c_foot = new CSG.Connector([0,0,F.foot.ho],[0,0,1],[1,0,0]);
 rv.properties.P = new CSG.Connector([0,0,0],[0,0,1],[1,0,0]);
 return rv.setColor(CONFIG.color.softparts);
}

function refaxes(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])
 ]);
}

function P(x) {
 return x.connectTo(x.properties.P,new CSG.Connector([0,0,0],[0,0,1],[1,0,0]), false, 0);
}

var PARTS = {
 wip: function(params) {
  return foot();
  return union(base_extrusions(),column_extrusions(),duet());
 alltogethernow: function(params) {
  var cols = columns();
  var sides = base_sides();
  var feet = THREEWINDS.map(function(w,i) {
   var rv = foot();
   rv = rv.connectTo(rv.properties.c_column,cols[i].properties.c_bottom,false,0);
   return rv;
  });
  var rv = union(cols).union(sides.map(union)).union(feet);
  rv.properties.P = new CSG.Connector([0,0,0],[0,0,1],[1,0,0]);
  return rv;
 }
};

function main(params) {
 var part = params.part && PARTS[params.part];
 if(!part) return refaxes();
 var rv = P(part(params));
 if(!params.print) rv = rv.union(refaxes());
 return rv;
}

function _main(params) {
 var e = EFFECTOR.effector();
 var hs = E3DV6.heatsink();
 hs = hs.connectTo(hs.properties.grove_connector,e.properties.grove_connector,false,0);
 var ms = microswitch();
 var hd = EFFECTOR.hinged({
  microswitch:ms,effector:e
 });
 ms = ms.connectTo(
  ms.properties.screw_connector[0],
  hd.properties.microswitch_screw_connector[0],
  false, 0);
 var hdhd = EFFECTOR.split_hinged(hd);
 var fh = EFFECTOR.fanholder();
 return union({
  platform: e,
  hinged: hdhd[1],
  clamp: hdhd[0],
  fanholder: fh,
  alltogethernow: [e,hdhd[0],hdhd[1], columns(),hs,ms,fh]
 }[params.part||'alltogethernow'])
 var rv = union(
  e,
  hs,
  columns(),
  ///hd,
  hdhd[0], hdhd[1],
  ms);
 return rv;
}

function getParameterDefinitions() {
 return [{
  name: 'part',
  type: 'choice',
  values: [
   'platform',
   'hinged',
   'clamp',
   'fanholder',
   'alltogethernow',
   'wip'
  ],
  captions: [
   'Effector platform',
   'Hinged part',
   'Clamp',
   'Fan holder',
   'All together now!',
   'Work in progress'
  ],
  caption: 'Part',
  initial: 'wip'
 },{
  name: 'print',
  type: 'checkbox',
  caption: 'For print, no nonsense',
  initial: false
 }];
}

/* vim:set ft=javascript ai: */