upAxis

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Synopsis

upAxis [-axis string] [-rotateView]

upAxis is undoable, queryable, and NOT editable.

By default, the ground plane in Maya is on the XY plane. Hence, the default up-direction is the direction of the positive Z-axis.

The -ax flag is mandatory. In conjunction with the -ax flag, when the -rv flag is specified, the camera of currently active view is revolved about the X-axis such that the position of the groundplane in the view will remain the same as before the the up direction is changed.

The screen update is applied to all cameras of all views.

Return value

None

In query mode, return type is based on queried flag.

Flags

Long name (short name)	Argument types	Properties
-axis(-ax)	string
This flag specifies the axis as the world up direction. The valid axis are either "y" or "z". When queried, it returns a string.
-rotateView(-rv)
This flag specifies to rotate the view as well.

Flag can appear in Create mode of command	Flag can appear in Edit mode of command
Flag can appear in Query mode of command	Flag can be used more than once in a command.

MEL examples

// 1. to make the Y-axis of the world to be the up axis:
upAxis -ax y;

// 2. to make the Z-axis of the world to be the up axis,
// and rotate the view:
upAxis -ax z -rv;

// 3. to query which axis is the current up axis
// (returns a string: a "y" or a "z"):
upAxis -q -axis;