2017

NOTE Single element groups cannot be created.
To create groups in the Priority Editor:
1 Select multiple scene objects in the Priority Editor using either Alt-click for individual objects or
Shift-click to select a range.
2 Click Group in the Priority Editor menu.
Media is minimized to a single line in the Priority Editor. To expand the group and view its contents,
click the arrow to the left of the group. Group contents can be reordered within the group.
3 Scene objects can be ungrouped by clicking Group once again.
Analyze, Z-Sort, and the Z-Buffer
When you use Analyze or Z-Sort, the objects in the scene are compared using their position in the scene
and not the individual pixels of a shape or model. The Priority Editor uses distance between the camera and
the nearest and farthest points on the objects in the scene to determine the sorting order.
Since the Priority Editor is geometry based and not polygon based, you cannot properly order objects or
groups that intersect due to their rotation, scale, or shear values. The Z-buffer uses the Z-value of each pixel
for the sorting order. Use the Priority Editor in conjunction with the Z-Buffer box in the Setup menu Rendering
section.
(a) Z-buffer box
When Z-buffer is on, objects and groups are arranged according to their distance from the camera eye. Since
the camera is pointed towards the Z-axis by default, objects and groups are arranged according to their
location on the Z-axis. In the following example, Image A is at Z position 200, Image B is at Z position 100,
and Image C is at -50. When Z-buffer is on, Action draws these images as shown.
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