On 4/25/07 5:31 PM, "Joshua Sera" <[EMAIL PROTECTED]> wrote:
> If you know that the two endpoints of the curve are > always going to have an equal x or y value, the you > can just use the quadratic formula, and get the right > Y value. The two endpoints will never move. The middlepoint will be the only one moving. So now I just need the quadratic formula ... I googled "quadratic formula" and I couldn't figure it out nor translate it to my Flash needs. Like I said, I'm (almost) totally math impaired ! > If the endpoints are arbitrary, it's a bit more > complicated. Bezier curves take a number from 0 to 1 > and give you a point along the curve. Plugging 0 into > the formula gives you the first endpoint, 1 gets you > the last, and anything else gives you something in > between. > > This means you're going to have to figure out where > along the curve your MC is closest to, which involves > some vector math. > Since I know the _x position of MC, in order to figure out where the MC is along the curve... Can't I use its _x "percentage": MC._x / (lastpoint.x - firstpoint.x) Just curious, but I don't think I need this since my two endpoints will not move. > If you want, I can draw out the way I'd approach it. Of course I'd be more than happy to see that. _______________________________________________ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
