add dynamic jumpers and blinkers.

js/pixl/public/trixl.html

			return wavies;
		}
		trixl.dynamic.jumping = function(lo, hi, interval, color) {
			var pos = [rand(lo, hi), rand(lo, hi), rand(lo, hi)];
			var last = 0;
			var interval = interval || 1000;
			var color = color || trixl.color;
			return function(t) {
				if (Math.abs(last - t) > interval) {
					pos = [rand(lo, hi), rand(lo, hi), rand(lo, hi)];
					last = t;
				}
				return {x: pos[0], y: pos[1], z: pos[2], color: color};
			}
		}
		trixl.dynamic.blinking = function(pos, interval, color) {
			var interval = interval || 5000;
			var color = color || trixl.color;
			return function(t) {
				var c= color;
				c[3] = Math.sin((t % interval) / interval * Math.PI);
				return {x: pos[0], y: pos[1], z: pos[2], color: c};
			}
		}
		trixl.generate = {};
		trixl.generate.random = function(lo, hi, color) {
			var x = lo + Math.round(Math.random() * (hi - lo)),
			});
		}
		trixl.generate.jumpers = function(n, lo, hi, loI, hiI) {
			range(n).map(function() {
				var color = [Math.random(), Math.random(), Math.random(), 1];
				var interval = rand(loI || 10000, hiI || 100000);
				trixl.world.dynamic.push(trixl.dynamic.jumping(lo, hi, interval, color));
			});
		}
		trixl.geometry = {};
		trixl.geometry.circle = function(pos, radius, color) {