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Rotate or orient a 3d layer in the timeline panel, Axis modes – Adobe After Effects CS4 User Manual

Page 189

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183

USING AFTER EFFECTS CS4

Layers and properties

Last updated 12/21/2009

Animating the Orientation property is often better for natural, smooth motion, whereas animating the Rotation
properties provides more precise control.

More Help topics

Show or hide 3D axes and layer controls

” on page 182

Selecting and arranging layers

” on page 143

Layer properties

” on page 159

3D layers (keyboard shortcuts)

” on page 750

Rotate or orient a 3D layer in the Composition panel

1

Select the 3D layer that you want to turn.

2

Select the Rotation tool

, and choose Orientation or Rotation from the Set menu to determine whether the tool

affects Orientation or Rotation properties.

3

In the Composition panel, do one of the following:

Drag the arrowhead of the 3D axis layer control corresponding to the axis around which you want to turn the layer.

Drag a layer handle. Dragging a corner handle turns the layer around the z axis; dragging a left or right center
handle turns the layer around the y axis; dragging a top or bottom handle turns the layer around the x axis.

Drag the layer.

Shift-drag to constrain your manipulations to 45-degree increments.

Rotate or orient a 3D layer in the Timeline panel

1

Select the 3D layer that you want to turn.

2

In the Timeline panel, modify the Rotation or Orientation property values.

Press R to show Rotation and Orientation properties.

Online resources about rotating and orienting 3D layers

Andrew Silke provides an explanation of the difference between orientation (Quarternion rotation) and conventional
rotation (Euler rotation) on the

Guerilla CG website

.

Donat Van Bellinghen provides some expressions on the

AE Enhancers forum

for placing and orienting a 3D layer in

the plane defined by three points.

Chris and Trish Meyer provide a video tutorial on the

ProVideo Coalition website

that demonstrates the use of the 3D

axis layer controls.

Axis modes

Axis modes specify on which set of axes a 3D layer is transformed. Choose a mode in the Tools panel.

Local Axis mode

Aligns the axes to the surface of a 3D layer.

World Axis mode

Aligns the axes to the absolute coordinates of the composition. Regardless of the rotations you

perform on a layer, the axes always represent 3D space relative to the 3D world.

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