G-code test generator

testgen.js

// usage: node testgen.js > myFile.g
// alter the below variables to taste!

var ORIGIN = [0,0];
var EXTENT = 90;
var NUM_LOOPS = 20;
var POINTS_PER_LOOP = 100;
var SPEED=20000;
var MAX_HEIGHT=250;
var i, theta, r, h;

console.log("G4 P5000");
console.log("G28");
console.log("G1 F"+SPEED);
for(i=0;i<NUM_LOOPS;i+=(1/POINTS_PER_LOOP)){
  theta = 2*i*Math.PI;
  r = EXTENT*(1-i/NUM_LOOPS);
  h = MAX_HEIGHT*i/NUM_LOOPS;
  console.log("G1 X"+(ORIGIN[0]+Math.cos(theta)*r)
      +" Y"+(ORIGIN[1]+Math.sin(theta)*r)
      +" Z"+h);
}
console.log("G28");