Vertex Icon Highlight

[ScottMC]

here's the AI reply to my question:

"Activate Current Vertex 'X' marker: as if Clicking on the Current Vertex field on gis Properties, autolisp"

 

here's the code and tried but my a2k might not be able..

can someone try this <short>Vertex.X.lsp?

 

(defun c:Sv ( / ent obj vla-obj vertexNum)
  (vl-load-com)
 
  ;; 1. Select the polyline
  (setq ent (car (entsel "\nSelect Polyline: ")))
  (if (and ent (member (cdr (assoc 0 (entget ent))) '("LWPOLYLINE" "POLYLINE")))
    (progn
      (setq vla-obj (vlax-ename->vla-object ent))
      
      ;; 2. Ask for the vertex index (0-indexed)
    (setq vertexNum (getint "\nEnter vertex index (0 is first): ")) ;; 0) ;; <- my choice
      
      (if (and vertexNum (>= vertexNum 0))
        (progn
          ;; 3. Set the CurrentVertex property (Activates the X marker)
          (vl-catch-all-apply 'vlax-put-property (list vla-obj 'CurrentVertex vertexNum))
          
          ;; 4. Refresh to show the marker
          (vla-update vla-obj)
          (redraw)
          (princ (strcat "\nVertex " (itoa vertexNum) " activated."))
        )
      )
    )
    (princ "\nNot a valid polyline.")
  )
  (princ)
)

 

Edited February 15 by SLW210
Added Code Tags!!!

[GLAVCVS]

'CurrentVertex' is not a property of "LWPOLYLINE" objects

[ScottMC]

no show/difference with a 'CONVERTPOLY Enter polyline conversion option [Heavy/Light] <Light>: h'

2d polyline..

[BIGAL]

You can get all vertices step 1, Step 2 is enter vertice number place a "X" say as text on vertice. If wrong do again erasing existing "X".

 

An example of get co-ords.

(setq plent (entsel "\nPick lwpolyline 2D "))
(if plent (setq co-ord (mapcar 'cdr (vl-remove-if-not '(lambda (x) (= (car x) 10)) (entget (car plent))))))
(princ co-ord)

 

If you have 3D poly's then use

(setq obj (vlax-ename->vla-object (car (entsel "\nPick pline "))))
(setq co-ord (vlax-safearray->list (vlax-variant-value (vla-get-coordinates obj))))

 

[ScottMC]

Re.. the point is to get AutoCAD to perform the Properties vertex highlight but

I'm probably correct to say 'they wouldn't prefer. Just is a single click on the

Properties/Vertex and up.it.pops. Such a minor benefit but would choose yes

if asked. Here's one from the many [matrix..] that does help me. It's from MR

Marko Ribar - with other updates..

https://forums.augi.com/showthread.php?125388-End-of-foreach-function

But here's my mod of it.

 

CHIV-StartPoint.lsp

[SLW210]

Please use Code Tags for your code in the future. (<> in the editor toolbar)