text: var LOOP = {};
  
  LOOP.For3D = function (startPoint, span, fnc) {
  	for (var ix = startPoint.x; ix < startPoint.x + span.x; ix++) {
  		for (var iy = startPoint.y; iy < startPoint.y + span.y; iy++) {
  			for (var iz = startPoint.z; iz < startPoint.z + span.z; iz++) {
  				if (fnc(new THREE.Vector3(ix, iy, iz))) return;
  			}
  		}
  	}
  };