Animations, keyframes, and performance

DrPain · Post by **DrPain** » Wed Sep 07, 2005 5:58 pm

Does having a key per frame affect Ogre's animation performance?
In other words, is it better to have fewer keys, causing more interpolation, or have more keys, or it doesn't matter?

sgrgc · Post by **sgrgc** » Wed Sep 07, 2005 6:03 pm

i think there must not be a big difference

Post by **sinbad** » Wed Sep 07, 2005 6:06 pm

No real runtime performance difference, just bigger memory usage for more keys. Really you should use as few keys as you can. Animation::optimise helps you here.

sgrgc · Post by **sgrgc** » Wed Sep 07, 2005 6:29 pm

i have to study more

DrPain · Post by **DrPain** » Wed Sep 07, 2005 6:33 pm

sinbad wrote:Animation::optimise helps you here.

Ah, good tip! I wasn't aware of that function. Thanks.

Post by **sinbad** » Wed Sep 07, 2005 10:00 pm

I wrote this method specifically to make it simpler to make exporters which sampled IK animation at fixed intervals, which can introduce unnecessary keyframes and static tracks if done across the board. Of course, this wasn't entirely altruistic since I was writing such an exporter at the time (XSI)