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after keyframe behavior like in combustion

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Marcus Eich
after keyframe behavior like in combustion
on Aug 6, 2010 at 9:05:35 am

Hello

I am new to ae working for years now with combustion
My question is:

how is it possible to make a constantly linear movement after the last keyframe in the timeline?
example:
a ball spinning 360 degree and flying up.

in combustion its so easy:
1. you make 2 keyframes
2. you change values of second keyframe
3. change the after keyframe behavior to linear
4. ball fly up and spinn till infinity!

i discovered that in ae it is not so easy because the curve after the last keyframe is always constant and there are no options to change.

So is there only the way to put in an expression to fix that problem?
And if so how is the correct syntax?

thanks for your help

Marcus


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Dave LaRonde
Re: after keyframe behavior like in combustion
on Aug 6, 2010 at 2:57:44 pm

I want to make sure I understand the animation you want. Here is how I understand it:
A sphere rotates 360 degrees, then comes to a stop. The sphere then moves vertically -- in the AE x-axis -- off the screen, moving faster as it goes along.

It this right? Please correct it as necessary, taking great care to mention any speed changes in rotation, direction of movement, etc.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Michael Szalapski
Re: after keyframe behavior like in combustion
on Aug 6, 2010 at 3:50:47 pm

I believe he's wanting to set a keyframe for a type of motion and have it continue that way. For the globe to constantly rotate at the same speed. Which, in AE, could be achieved through a loopOut expression or animating the rotation with a time-based expression and no keyframes at all. (Alt-click the stopwatch for a rotation parameter and type time*100 and see what happens.)

As someone new to AE, I highly recommend starting here.

- The Great Szalam
(The 'Great' stands for 'Not So Great, in fact, Extremely Humble')

No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.


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Dave LaRonde
Re: after keyframe behavior like in combustion
on Aug 6, 2010 at 3:59:44 pm

[Michael Szalapski] "...a loopOut expression or animating the rotation with a time-based expression and no keyframes at all..."

Right. I see. Then the position animation can simply be done via keyrframes.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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