View Full Version : what is the difference between rotation and orientation?


Kayzer
05 May 2010, 12:06 PM
of a layer..

when i make a layer to a 3d layer, i'm also getting the orientation parameter..

how is it different than the rotation parameter?

thanks!

Mylenium
05 May 2010, 02:25 PM
Euler vs. Quaternion rotations. Look it up on Google.

Mylenium

ToddKopriva
05 May 2010, 03:23 PM
One simplified way of thinking about the difference between orientation and rotation is that orientation is about the angular _destination_, and rotation is about the angular _route_ to that destination.

So, orientation is about the pose, and rotation is about the motion to a pose.

Here's what After Effects Help says in "Rotate or orient a 3D layer" (http://help.adobe.com/en_US/aftereffects/cs/using/WS3878526689cb91655866c1103906c6dea-7e33a.html):
"When you animate the Orientation property of a 3D layer, the layer turns as directly as possible to reach the specified orientation. When you animate any of the X, Y, or Z Rotation properties, the layer rotates along each individual axis according to the individual property values. In other words, Orientation values specify an angular destination, whereas Rotation values specify an angular route. Animate Rotation properties to make a layer turn multiple times. Animating the Orientation property is often better for natural, smooth motion, whereas animating the Rotation properties provides more precise control."

Kayzer
05 May 2010, 06:20 PM
hmm..

"When you animate the Orientation property of a 3D layer, the layer turns as directly as possible to reach the specified orientation"..

what does it mean "the specified orientation"?..

ToddKopriva
05 May 2010, 08:08 PM
> what does it mean "the specified orientation"?


the value that you set for the Orientation property

Kayzer
05 May 2010, 07:29 PM
ok thanks everyone for your replies :)

spiralof5
06 June 2010, 02:56 PM
It's really not as complicated as people are suggesting. Orientation rotation only allows you to rotate from 0 to 359 degrees and then if you want to rotate it again you set a key from 360 and on. XYZ you can rotate 360 degrees and use the numbers left of the "x" to rotate as many times as you'd like.

Kayzer
06 June 2010, 04:32 PM
ya, i know that, but the question i was asking is - why?

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06 June 2010, 04:32 PM
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