![]() ![]() So what we want to do here is conjure up an expression that will cause a layer to rotate on its y axis to face the camera, but doesn't affect the layer's x or z orientation. In the bottom movie, each layer has been constrained to orient itself towards the camera only on its y axis, maintaining contact with the ground plane. Any property that is keyframe-able can use an expression. This certainly helps maintain the 3D illusion, but you can see that as the camera moves up, the characters' feet lose their connection point with the ground plane. Alt + Click (Windows) or Option + Click (Mac) the stopwatch to add an expression. My main problem was that I need to define all of the variables before listing the bracketed scale values. In the middle movie, Auto-Orient Towards Camera has been applied to the bears and the tree. If you’re new to expressions in After Effects, one of the most helpful and easy to use expressions available is the time expression. It quickly becomes very obvious that the objects in the scene are paper-thin "cutouts". The After Effects time expression is a great way to add movement without setting keyframes. The top movie shows a camera move where the vertical layers have no auto-orientation applied. ![]() If you examine the three movies to the right you can see the issue. In those cases you may want the object to turn and face the camera but to also maintain its perpendicular relationship with the ground plane. This is especially true if you want the layer to maintain its vertical orientation. When auto-escaping is in effect, all content derived from variables has HTML escaping applied before placing the result into the output (but after any filters. Sometimes though, it would be better if the auto orientation only affected the layer's y axis. Auto-orientation towards the camera is a 3D technique in After Effects with a lot of uses.
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