Abrupt starts and stops

Matt2fronteeth · Post by **Matt2fronteeth** » Sun Oct 22, 2006 8:51 pm

How can I get rid of the acceleration and deceleration of a moving layer in the timeline? The red curve on the timeline graph shows this gradual start and stop as a kind of sine wave. I want to make an object start at its top speed, with no acceleration, and stop abruptly with no deceleration. In other words, a sawtooth wave instead of a sine wave on the graph. How can this be done?

heyvern · Post by **heyvern** » Sun Oct 22, 2006 9:54 pm

Rt click on the key frame/s and select "Linear" from the interpolation pull down menu.

You can have more than one key frame selected when you do this as well.

On Mac I think it is control click... my Mac has a rt click so I always forget.

-vern

Matt2fronteeth · Post by **Matt2fronteeth** » Mon Oct 23, 2006 4:23 am

Hey, thanks, that works! Although to do it you have to come out of graph mode. The key frames aren't displayed there. Like you say, it probably is CMD-click, but I have a three-button mouse too, so right-click did it.

The tutorial clouds look much better with linear motion. Never saw a cloud yet that started moving like the angel riding it had just stepped on the gas!

JCook · Post by **JCook** » Mon Oct 23, 2006 1:26 pm

Never saw a cloud yet that started moving like the angel riding it had just stepped on the gas!

Now that sounds like an idea for an animation - angels driving the clouds around in the sky, stepping on the gas and braking to a screeching halt.

Jack