Reverse Cached Animation

[surfer]

Hi there

I am trying to reverse a cached particle animation. Days after, I can't make this work.

Is there anyone know how to make Maya read cache in reverse way?

I got a simple particle system that collide with the floor. I am trying to reversed this whole animation by reversing the cache.

Is there anyone know how to do it? I appreciated for any helpful hints and suggetions.

Thanks a lot! Pal

[prattyy]

ok...i dont know exactly if this will work but you can try this....
why dont u bake ur animation it will give u the keys then after that u can reverse all the key so that the animation plays backward i can help you with the mel command for reversing your animation.

select all tour keys and type this command in the command line (scaleKey -timeScale -1.0)
you can see your animation playing in reverse order(the keys will start from negetive time so be sure to move the keys to positive time line)

if this works let me know...

[surfer]

QUOTE(prattyy @ 05/07/06, 02:09 AM) [snapback]236542[/snapback]
ok...i dont know exactly if this will work but you can try this....
why dont u bake ur animation it will give u the keys then after that u can reverse all the key so that the animation plays backward i can help you with the mel command for reversing your animation.
select all tour keys and type this command in the command line (scaleKey -timeScale -1.0)
you can see your animation playing in reverse order(the keys will start from negetive time so be sure to move the keys to positive time line)
if this works let me know...

Hi Prattyy

Thanks for the replying. I tried to use the MEL like you said....However all baked keys dissappeared. Then I tried to test it on simple object like sphere, I deleted the history too. The same result returned, all my baked keys gone.

Something I did it wrong? Anyway, thanks for giving me a hint. and I am looking forward to hearing from you soon.

[bflat]

Don't know if your simulation has got something specific, that makes your keys disapear, but I tried the scaleKey commands on mine, and it works well.
As Prattyy said, your keys are totally reversed in time. Means that if your simulation happened to be from frame 0 to frame 100, it'll now be from -100 to 0.
Thx Prattyy.

[prattyy]

ok surfer i am not able to get what is going wrong in your case.

try to cache yot particles before baking the animation may be that help....

if that also doesnt help i will try to do my best to help you

reply if this works

[joojaa]

thisones easy enough o do on particle level

Revert to the cached partilce stage. Be sure chac that there actualy is a properly named disk cache

create a new time node ( createNode time )

connect this timenodes out time to teh time of the particleShape.

set a aexpression for the time attrib of the partocle nocd that look slike this

700-frame

whare 700 is a proxty for whatever frame count you have.

[surfer]

QUOTE(Joojaa @ 05/10/06, 05:57 AM) [snapback]236834[/snapback]
thisones easy enough o do on particle level

Revert to the cached partilce stage. Be sure chac that there actualy is a properly named disk cache

create a new time node ( createNode time )

connect this timenodes out time to teh time of the particleShape.

set a aexpression for the time attrib of the partocle nocd that look slike this

700-frame

whare 700 is a proxty for whatever frame count you have.

Hi Joojaa

It works now.. ..
Thanks a lot pal... you have been very helpful. Both of you. I appreciated.

[drblacksnake]

.. and there was a possibility to reverse rendered image order in comp.