the simplest snippet for evaluating quadratic bezier curves. only integer computation is involved.

bezier2.as

function bezier2(ax, ay, bx, by, cx, cy) {
	var minlength = 20;
	var dist = Math.sqrt(Math.pow(ax - bx, 2) + Math.pow(ay - by, 2)) + Math.sqrt(Math.pow(bx - cx, 2) + Math.pow(by - cy, 2));
	var steps = dist / minlength;
	moveTo(ax, ay);
	for (var i=0; i<steps; i++) {
		var x = getstep(getstep(ax, bx, i, steps), getstep(bx, cx, i, steps), i, steps);
		var y = getstep(getstep(ay, by, i, steps), getstep(by, cy, i, steps), i, steps);
		lineTo(x, y);
	}
	lineTo(cx, cy);
}

function getstep(x1, x2, stepcount, numofsteps) {
	return ((numofsteps - stepcount) * x1 + stepcount * x2) / numofsteps;
}