rot_about
rot_about e|k|m|vROT_ABOUT(nged)
NAME
rot_about - get or set the point about which view rotations are performed
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SYNOPSIS
DESCRIPTION
The rot_about command gets or sets the pivot point used when rotating the view. The pivot determines the fixed point in space around which the camera orbits when rotation commands (such as rot) are applied.
-
No arguments: Returns the current rotate-about setting as a single character (
e,k,m, orv). -
One argument: Sets the rotate-about point to the specified single-character mode. The argument must be exactly one character from the set
e,k,m, orv. Any other value returns a usage error.
Rotate-about modes
| Mode | Description |
|---|---|
|
Eye point — rotate about the eye (camera) position. The scene orbits around the viewer’s current location. |
|
Keypoint — rotate about the current keypoint. The keypoint is typically the center of the last selected or edited object. |
|
Model origin — rotate about the model coordinate system origin (0, 0, 0). |
|
View center — rotate about the center of the current view (the point at the center of the display window). |
EXAMPLES
Example 1. Get the current rotate-about mode
mged> rot_about
Returns the current rotate-about mode character, e.g. v if rotating about the view center.
Example 2. Rotate about the model origin
mged> rot_about m
Sets rotations to orbit around the model coordinate origin (0, 0, 0). Subsequent rot commands will pivot about that point.
Example 3. Rotate about the view center
mged> rot_about v
Sets rotations to orbit around the center of the current display window. This is the most common interactive setting.
AUTHOR
BRL-CAD Team
BUG REPORTS
Reports of bugs or problems should be submitted via electronic mail to devs@brlcad.org