Create a sphere of radius 1 from altitude and azimuth.

gistfile1.js

function makeVec(altitude,azimuth){
  var x, y, z, hyp, vector;
  z = Math.sin(altitude);
  hyp = Math.cos(altitude);
  y = hyp*Math.cos(azimuth);
  x = hyp*Math.sin(azimuth);
  vector = new Vector(x,y,z);
  return vector;
}
 
//Altitude: vertical(up down)
//Azimuth: horizontal(left right)
 
//Iterate like this
var grain = 0.01, vectors = [];
for(var az=0; az<Math.TWO_PI; az+=grain)
  for(var al=0; al<Math.TWO_PI;az+=grain)
   vectors.push(makeVec(al,az));