Reverse a line

Tom Foster · April 2022

Is there any way to reverse the 'direction' of a line? in order to alter which end extends when its Length is edited in Properties.

Michael Mayer · April 2022

I do not know the answer ....

but I am so happy to have Vectorworks using all 2D objects parametric
for direct Size Editing in properties palette - and offering a small gizmo (*),
that allows you to choose the center of scaling.
(*) Even by adapting the gizmo to your current drawing view, orthogonally
and isometrics.

And of course there is a button to switch Lines, Polylines, Walls, .... directions.

martin@enco.us · April 2022

I use this.

(defun c:rv ( / e_list e_type memb selset temp)

  (and (setq selset (ssget "_:L" '((0 . "LINE,LWPOLYLINE,SPLINE,ARC,CIRCLE"))))
       (setq e_list (vle-selectionset->list selset))
       (foreach memb e_list
         (setq e_type (vle-entget 0 memb))
         (cond
           ;; Line
           ( (eq "LINE" e_type)
               (setq temp (vle-entget 10 memb))
               (vle-entmod 10 memb (vle-entget 11 memb))
               (vle-entmod 11 memb temp)
           )
           ;; LWPolyline
           ( (eq "LWPOLYLINE" e_type)
               (command "_pedit" memb "_R" "")
           )
           ;; Arc
           ( (eq "ARC" e_type)
               (command "_pedit" memb "_Y" "_R" "")
           )
           ;; Circle
           ( (eq "CIRCLE" e_type)
               (command "_pedit" memb "_Y" "_R" "")
           )
           ;; SPLINE
           ( (eq "SPLINE" e_type)
               (vla-reverse (vlax-ename->vla-object memb))
           )
         )
       )
  )
  (princ)
)

David Waight · April 2022

Does the attached do what you need?

Patrik Sparrman · April 2022

Pedit reverses polylines. Pick your line Pedit , yes convert, revert . Then explode if you dont want it to stay pline

Anthony Apostolaros · April 2022

Rotate it 180° about its midpoint.

Tom Foster · April 2022

Thanks - all good - but Acad has a simple REVERSE command. Wonder why Brics doesn't.

imitsus · November 18

https://forum.bricsys.com/discussion/comment/48928#Comment_48928

thanks!

Tom Foster · November 18

This came up in another thread - best suggestion was to SCALE the line, picking its midpoint and entering -1 for the scale!

aridzv · November 18

@Tom Foster

see attached lisp.

it reverse both ploylines and lines.

rvrsline.lsp

Reverse a line

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