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Table Of Contents
(a) Drawing order of objects in the scene (b) Priority Editor controls
Use the Priority Editor controls to analyse the scene for changes in rendering priority, to change the rendering
priority, and to cut, copy, and paste priority information from one frame to another.
Changing the Drawing Order
The objects in the scene are shown according to z-depth, while still being drawn in the order of their priority:
highest priority at the top of the list to the lowest priority at the bottom. The lowest level object is drawn
first, the second to lowest level object is drawn next, and so on, until the top of the list.
To change the drawing order of objects:
1 From the Priority Editor box, select which type of object to view in the list.
2 In the Priority Editor list, select the object (or multiple objects).
The selected object name is highlighted in yellow, and the corresponding object is selected in the
Action schematic.
3 Do one of the following:
■ Drag the object to the desired position in the stack.
■ Click the Push To Back button to move the selected object one position lower in the stack, or click
the Bring To Front button to move the selected object one position higher in the stack.
NOTE If the Priority Auto Key button is enabled when you move an object in the stack, a keyframe is added
to the timebar.
4 Click Preview to ensure that the drawing order is correct.
Occasionally, a matte may obscure another object if the drawing order is unordered. If this happens,
move the object up and down in the stack until the drawing order is corrected, or click Z-Sort.
Grouping Media
Select objects in the Priority Editor and group them to edit or affect several media at once. You can analyse
or Z-Sort groups as you would single media.
Groups are named according to their contents. For example, if a group is created from Image 3 and Image
32, the Group's label will be “Image 2 Image 32”.
It is not possible to add a scene object to an existing group. To do this, you must ungroup the objects, reselect
those you want to include in the group, and click Group.
454 | Chapter 15 Compositing in 3D Space with Action