Non-uniform scaling

Tom Foster

is it possible to SCALE a collection of 2D entities non-uniformly i.e. x and y axis by different ratios? SCALE comand won't do it but I seem to remember it said that it can be done using Properties panel. Can't see that tho. Or by converting to a Block, Exploding afterwards?

CADMebel

Yes with blocks - set EXPLMODE to On.

Michael Mayer

Maybe Align Tool.

There is an old Bricscad Video on Youtube where a house plan
was "aligned" to a city plan.
Align Tool did 3 things at a time, Move, Scale and Rotate.

I am just not sure if there was also non-uniform scaling
possible or not.

Tom Foster

That's it CADMebel - thanks.
Michael, I use ALIGN a great deal in 2D, dabbing Enter twice at end, so z remains unaltered; never realised there was a final option to Scale, before the last dab. Unfortunately it doesn't offer non-uniform scaling. Thanks - learned something.

Jason Bourhill

Hi Tom,

I think this is possible to do using unequal scaling with INSERT. Steps would be:

• COPYCLIP desired entities to the clipboard.
• PASTEBLOCK entities back in as block.
• Use INSERT (make sure all options are set to specify on screen) to insert the block name created by PASTEBLOCK.
• When prompted, select X Y Z scaling to allow you to enter separate scale factors for each axis. Note the scale factor has to be a real number, don't define by picking points.
• Finish insertion of the block by setting the rotation angle.
• Use EXPLODE to explode the block (EXPLMODE needs to be ON).

The following function can be used to assist with working out the X Y Z scale factors.

(defun scalefactor ( / Source Target)
    (cond ((and (setq Source (getdist "\nSource distance: "))   (setq Target (getdist "\nTarget distance: ")))
                 (/ Target Source)
                )
                (T nil)
    )
)

You can call it from within a command by typing (scalefactor) when prompted for a X Y Z scale.

Regards,
Jason Bourhill
BricsCAD V21 Ultimate
CAD Concepts