[HELP] AutoLisp newbie here, need help with rotation of points

[Trixtan]

Hi all,

I am new in AutoLisp.
I have to write a function that take all the points in the drawing and
rotate them in the YZ plane. I have learned how to select the points,
but can you give me some suggestions about rotation? Thank you very
much.

Trixtan

[Michael Bulatovich]

If you are going to use a COMMAND call to ROTATE,
you will probably first have to adjust your UCS to make that possible.
The rotation has to happen in the plane of the USC.
--


MichaelB
www.michaelbulatovich.com

"Trixtan" <trixtan2002@yahoo.it> wrote in message
news:dfe09545.0501170340.2c7b218b@posting.google.com... Hi all, I am new in AutoLisp. I have to write a function that take all the points in the drawing and rotate them in the YZ plane. I have learned how to select the points, but can you give me some suggestions about rotation? Thank you very much. Trixtan

[CS]

There is ROTATE3D you could use also but in AutoCAD 2000 I had problems with
it not being as accurate as rotating the UCS and things that should have
been parallel or perpendicular were off by some rounding factor. Using
ROTATE3D was actually easier than rotating the UCS and rotating, but the
errors it created weren't worth my time.

Corey

"Michael Bulatovich" <Please@dont.try> wrote in message
news:u_OGd.6407$K03.281141@news20.bellglobal.com... If you are going to use a COMMAND call to ROTATE, you will probably first have to adjust your UCS to make that possible. The rotation has to happen in the plane of the USC. -- MichaelB www.michaelbulatovich.com "Trixtan" <trixtan2002@yahoo.it> wrote in message news:dfe09545.0501170340.2c7b218b@posting.google.com... Hi all, I am new in AutoLisp. I have to write a function that take all the points in the drawing and rotate them in the YZ plane. I have learned how to select the points, but can you give me some suggestions about rotation? Thank you very much. Trixtan