[solved]Tilted ellipse orbiting movement?

Hi, I wonder if anyone know how to make a ellipse movement and tilted?

<img src="https://dl.dropbox.com/u/1396615/bugImage/ellipse.png" border="0" />

I know how to make a circle and standard ellipse. example:

Object.x = center.X+cos(time*300)*200

Object.y = center.Y+sin(time*300)*300

Have you tried taking the output of that, and then feeding into this, where a is the angle of tilt?

x = X cos(a) - Y sin(a)

y = Y cos(a) + X sin(a)

cincipon, Do you mean x=center.x*cos(a)-center.y*sin(a) ?

Is there any constant or variable for orbiting speed?

He means this:

global number X = 0

global number Y = 0

global number a = 45

X = cos(time*300)*200

Y = sin(time*300)*300

Object.x = X*cos(a) - Y*sin(a) + center.x

Object.y = Y*cos(a) + X*sin(a) + center.y

docs.google.com/file/d/0B-6JjcHcczubZGc1RGtDbF9Dbnc/edit

That should link to a capx demonstrating. t is the step, or speed, theta is angle of rotation, a is one axis of the ellipse, b is the other

The initial transformation I posted rotates about the origin, so this new one is corrected for that.

The parametric equation is:

X(t) = Xc + a * cos(t) * cos(theta) - b * sin(t) * sin(theta)

Y(t) = Yc + a * cos(t) * sin(theta) + b *sin(t) * cos(theta)

AND OMG I NEED TO REFRESH MY TRIG. Thanks for pointing out a glaring weakness of mine. :(

Thanks guys it works perfect! complicated and out of my brain though xD

Don't sell yourself short! And also, trig is supremely useful in any video game development. Worth the investment of time if you're at all serious about making images move/stretch/rotate.

cincipon - would you happen to be able to post a working example like you did before? That link leads to a file that has nothing to do with this question.

Is there anywhere on the web you could point me to where I could learn about more 'gamey' maths stuff like this? I know that I might be able to just copy and paste and fiddle to get it working, but I'd rather really understand the maths behind it!

Cheers.