livecad snippets

cherry-keyboard-key-holder.js

var buttons = [];
var rows = 1;
var columns = 1;
var distanceBetween = 20;

var borderH = 1;
var borderW = 2;
var w = rows*distanceBetween + borderW
var h = columns*distanceBetween + borderH
var materialWidth = 1/8 * 25.4; // 1/8" in mm

var material = box(w, materialWidth, h)
	.translate(w/2, 6 - materialWidth/2, h/2); 

var mySwitch = makeSwitch(0, 0)
	.translate(distanceBetween/2, 0, distanceBetween/2);
for (var r = 0; r<rows; r++) {
  for (var c = 0; c<columns; c++) {
		material = material.cut(mySwitch.translate(
      r * distanceBetween + borderW/2, 0, c * distanceBetween + borderH/2
    ))

  }
}

display(material);

function makeSwitch(x, z) {

  // bottom of the shape
  var shape = box(14, 5, 14).translate(x, 2.5, z);
  
  // midway flange
  shape = shape.union(box(15.6, 1, 15.6).translate(x, .5 + 5, z));
  
  // top
  shape = shape.union(box(14, 5, 14).translate(x, 7.5+1, z))
  
  // bottom cylinder
  shape = shape.union(cylinder(3.3, 3.3).translate(x, -3.3/2, z))
  
  // key adapter
  shape = shape.union(cylinder(2, 3.6).translate(x, 11 + 1.8, z))
  
  shape = shape.cut(
    box(1.25, 3.6, 1.25).translate(x + 1.25, 11 + 1.8, z + 1.25)
  )
  
  shape = shape.cut(
    box(1.25, 3.6, 1.25).translate(x -1.25, 11 + 1.8, z + 1.25)
  )
  
  shape = shape.cut(
    box(1.25, 3.6, 1.25).translate(x -1.25, 11 + 1.8, z -1.25)
  )
  
  shape = shape.cut(
    box(1.25, 3.6, 1.25).translate(x + 1.25, 11 + 1.8, z -1.25)
  )
  return shape;
}  

cube-sine.js

var cubes = [];
for (var i=1; i<20; i++) {
  cubes.push(
    cube(i*20).translate(i*i*12, Math.sin(i)*100, 0)
  );
}

display(cubes)

naive-earthquake.js

var request = require('hyperquest')
var baseUrl = 'http://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/'
var url = baseUrl + 'all_day.geojson'
request.get(url, function(e, r) {
	r.on('data', function(d) {
    var o = JSON.parse(d);
    var spheres = [];
    var magnifier = 1.0;
    o.features.forEach(function(feature) {
      if (!feature.properties.mag) { return; }

      var coords = feature.geometry.coordinates;
      spheres.push(
        cube(feature.properties.mag * magnifier)
   				.translate(coords[0], coords[1], coords[2])
       );
    });
  
    display(spheres);
  });
});

nema17.js

// Nema 17 Stepper Motor Mount

var distanceBetweenHoles = 31;
var centerCircleDiameter = 22;
var dimension = 42; // width and height
var materialWidth = 3;

// compute hole pattern
var triLeg = distanceBetweenHoles/2;
var l = Math.sqrt(triLeg*triLeg*2);

var b = box(dimension, materialWidth, dimension);
b = b.cut(cylinder(centerCircleDiameter/2, materialWidth));

var TAU = Math.PI*2;
var a45 = Math.PI/4;
var a90 = Math.PI/2

for (var i=1; i<=4; i++) {
  var c = cylinder(1.5, materialWidth).translate(
    l * Math.sin(i * a90 + a45),
    0,
    l * Math.cos(i * a90 + a45)
  );

  b = b.cut(c)
}

display(b);

poor-mans-fillet.js

// by @maxharris9

function corners(commonPrimitive, x, z) {
  return [
    commonPrimitive.translate(x, 0, z),
    commonPrimitive.translate(-x, 0, -z),
    commonPrimitive.translate(x, 0, -z),
    commonPrimitive.translate(-x, 0, z)
  ];
}
 
function cutCorners (boxWidth, boxHeight, boxDepth, filletConst) {  
  var x = (boxWidth / 2) - (filletConst / 2);
  var z = (boxDepth / 2) - (filletConst / 2);
 
  var commonBox = box(filletConst, boxHeight, filletConst);
 
  return corners(commonBox, x, z);
}
 
function makeCyl (boxWidth, boxHeight, boxDepth, filletConst) {
  var x = (boxWidth / 2) - filletConst;
  var z = (boxDepth / 2) - filletConst;
 
  var commonCyl = cylinder(filletConst, boxHeight);
 
  return corners(commonCyl, x, z);
}
 
function filletCornerBox(boxWidth, boxHeight, boxDepth, filletRadius) {
  var someBox = box(boxWidth, boxHeight, boxDepth);
  var bits = cutCorners(boxWidth, boxHeight, boxDepth, filletRadius);
  var cyls = makeCyl(boxWidth, boxHeight, boxDepth, filletRadius);
 
  for (var i = 0; i < 4; i++) {
    someBox = someBox.cut(bits[i]);
  }
 
  for (var j = 0; j < 4; j++) {
    someBox = someBox.union(cyls[j]);
  }
  return someBox;
}
 
display(filletCornerBox(15, 0.3, 12, 0.5));

slot-pattern.js

var w = 100;
var plate = box(w, 2, w);
var r = 5

var cuttingTool = cylinder(r, 4).translate(r, 0, 0)
cuttingTool = cuttingTool
	.union(box(r*2, 4, r*2))
	.union(cuttingTool.translate(-10, 0, 0))
	.translate(w/2-r*2.1, 0, w/2 + r + 1.1)

for (var i=0; i<8; i++) {
  cuttingTool = cuttingTool.translate(0, 0, - (r + r*1.5));
  plate = plate.cut(cuttingTool)
}

display(plate)

timer.js

var c = cube(10);
var pos = 0;
setInterval(function() {
  display(c, c.translate(pos++, 0, 0))
}, 1000);