Command UCS with 3 points?

[maikhanhmst]

Hi everyone,

Could someone tell me how to set UCS with 3 points?

Set of points: pt1 (110353.0 -881.248 0.0) origin, pt2 (110453.0 -881.248 0.0) on X-axis, pt3 (110353.0 -781.248 0.0) on Y-axis.

I tried with (command "ucs" "3" pt1 pt2 pt3). The command line showed 

"Coincident with first point
; error: Function cancelled"

Thank you.

[hmsilva · Accepted solution]

Try

(setq pt1 '(110353.0 -881.248 0.0)
      pt2 '(110453.0 -881.248 0.0)
      pt3 '(110353.0 -781.248 0.0))
(command "ucs" "3" "_NONE" pt1 "_NONE" pt2 "_NONE" pt3)

Henrique

[marko_ribar]

Note that your UCS is the same as WCS only moved to different origin...

(command "_.UCS" "_W")
(command "_.UCS" "_M" "_none" '(110353.0 -881.248 0.0))

 Kr., M.R.

[maikhanhmst]

Thank you so much.

[maikhanhmst]

Many thanks Henrique.
Could you tell me what "_none" means in the command?

[hmsilva]

---

@maikhanhmst wrote:
Many thanks Henrique.
Could you tell me what "_none" means in the command?

---

You're welcome, maikhanhmst.

The "_none" is the Object Snap Mode 'None'.

Wen we use Command calls with points as argument, we should use the 'none' to ensure that the point provided to the command is the desired point and not a point resultant from some other Object Snap Mode.

Or set a variable with the current OSMODE value, set OSMODE to 0, run the command, and set OSMODE to the stored value.ie

(setq osm (getvar 'OSMODE))

(setvar 'OSMODE 0) 

(command "ucs" "3" pt1 pt2 pt3)

(setvar 'OSMODE osm)

Henrique

[maikhanhmst]

Great. Actually, before I get your answer I 'd figured out why I couldn't set the UCS to the set of the points. I tried turn off the osmode and it worked with my code. WIth your explaination, I understand better now. Thanks.

[hmsilva]

Glad you got it sorted!

Henrique