ocenter object
ocenter object x y zOCENTER(nged)
NAME
ocenter - get or set the center point of an object's bounding box
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SYNOPSIS
DESCRIPTION
The ocenter command gets or sets the bounding-box center of the specified object.
With one argument, ocenter computes the axis-aligned bounding box of object and returns the center point as a space-separated x y z triplet in the current working units.
With four arguments (object x y z), ocenter moves the object so that its bounding-box center coincides with the specified point (x, y, z) in model coordinates. The move is applied by modifying the object’s own geometry, not by adding a transformation to a parent combination. The object is updated directly in the database.
Coordinates are in the current working units.
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Note
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The bounding-box center is computed from the axis-aligned bounding box of the object, which may not coincide with the geometric centroid for asymmetric shapes. |
EXAMPLES
Example 1. Get the bounding-box center of an object
mged> ocenter hull.s
Returns the center of hull.s’s bounding box in working units, for example: `0 0 250.
Example 2. Move an object’s center to the origin
mged> ocenter wheel.s 0 0 0
Moves wheel.s so its bounding-box center is at the model origin (0, 0, 0).
Example 3. Center an object on an axis
mged> set c [ocenter part.s] mged> ocenter part.s 0 0 [lindex $c 2]
Retrieves the current center, then moves part.s so its center is on the Z axis (X=0, Y=0) without changing its Z position.
SEE ALSO
center(nged), translate(nged), bb(nged)
AUTHOR
BRL-CAD Team
BUG REPORTS
Reports of bugs or problems should be submitted via electronic mail to devs@brlcad.org