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Rotate UCS with the Number Pad
Tip# 3315 By Steve Schulz On 03-Jan-2010
Rated By 3 users
Categories : 3D Interface
Software type : AutoCAD 2010
Rename File To : No Files to download.
Try this tool if you are performing many 3D edits.

Steve Schulz sends us a routine he made to help speed navigation inside the UCS.

"I have set up my number pad as my UCS (user coordinate system) navigator. It is the best thing I have ever done for 3D drawings. I made a LISP routine that rotates the UCS when I type numbers followed by Enter: 1 rotates the x-axis 90 degrees, 2 rotates the y-axis 90 degrees, and 3 returns to the previous setting. I have expanded the LISP to rotate -90 degrees when I enter 4, 5, or 6 (6 rotates the z-axis), and to rotate 45 degrees in response to 7, 8, or 9. It's a huge time-saver."

(defun C:1 ( ) (command "ucs" "x" "90") (princ))

 (defun C:2 ( ) (command "ucs" "y" "90") (princ))

 (defun C:3 ( ) (command "ucs" "p") (princ))

 (defun C:4 ( ) (command "ucs" "x" "-90") (princ))

 (defun C:5 ( ) (command "ucs" "y" "-90") (princ))

 (defun C:6 ( ) (command "ucs" "z" "-90") (princ))

 (defun C:7 ( ) (command "ucs" "x" "45") (princ))

 (defun C:8 ( ) (command "ucs" "y" "45") (princ))

 (defun C:9 ( ) (command "ucs" "z" "45") (princ))

Notes from Cadalyst Tip Patrol: This is very fast indeed! Keep in mind that you are not rotating your view, but the UCS. When you first execute this routine you might get a little lost in your drawing, unless you are accustomed to rotating your UCS. To reset your UCS once you are done editing, type UCS on the command line, then type W for World. This will reset you to World Coordinates. This is a good tool to use if you are performing many 3D edits.



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User comments
Comment by Hollingsworth,Michael
Posted on 2010-01-05 08:19:37
It stands to reason that you keep UCSFollow turned on for these routines. I often have it turned off, so I would suggest adding a subroutine to check its state before executing the rest. Other than that, good job!
Comment by Anonymous
Posted on 2010-01-05 08:30:27
It seems that you could set 0 on the number pad to 'World' or to another named default UCS if you have one, in case you need to reset the UCS. Other than that, this is great