Author Topic: VLA SSGET  (Read 218 times)

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jlogan02

  • Bull Frog
  • Posts: 275
VLA SSGET
« on: July 07, 2022, 11:49:02 AM »
I'm handling something wrong here. I'm trying to avoid user input by selecting the lower left hand corner of the border at 0,0 with a crossing window.

It acts like it runs but I get no printed result and the dimscale isn't updated. I'm clearly doing something wrong with my
Code - Auto/Visual Lisp: [Select]
statement. Am I'm even approaching it right? Do I need to use

I've tried other variations and did get a selection set established but with it I got "bad point argument" errors.

Code - Auto/Visual Lisp: [Select]
  1. (defun c:TB_Dim (/ dim x len scale)
  2.   (setq dim (getvar 'dimscale))
  3.     (while (setq y (ssget "c" '(1 1) '(-1 -1))))
  4.      (if (setq x (vlax-ename->vla-object y)) ;;(car (entsel "\nSelect Polyline: "))))
  5.       (progn
  6.         (vla-getboundingbox x 'minpt 'maxpt)
  7.         (setq LL (vlax-safearray->list minpt)
  8.             UR (vlax-safearray->list maxpt)
  9.             L&W (mapcar '- UR LL)
  10.         )
  11.       (prompt (strcat "\nSegment length: " (rtos (car L&W) 2 4)))
  12.       (setq scale (/ (car L&W) 34))
  13.       (if (equal dim scale 0.0001)
  14.         (prompt (strcat "\nDimscale is Correct: " (rtos dim 2 4)))
  15.         (progn
  16.           (prompt (strcat "\nDimscale Changing from [" (rtos dim 2 4) "] to " (rtos scale 2 4)))
  17.           (setvar 'dimscale scale)
  18.         )
  19.       )
  20.     )
  21.     (prompt "\nNothing Selected try again")
  22.     )
  23.    )
  24.   (princ)
  25. )


Do I need an approach like this? 

Code - Auto/Visual Lisp: [Select]
  1. ;; Active Document:
  2. >
  3. > (if (ssget "x" )
  4. >
  5. >
  6. >
  7. > ;; Now ss contains the same objects found
  8. > ;; by the call to (ssget)
  9. >
  10. > ;; after you're done, you can release it:
  11. >
  12. > )
  13. > )
  14. >
J. Logan
ACAD 2018

I am one with the Force and the Force is with me.
AutoCAD Map 2018 Windows 10

Lee Mac

  • Seagull
  • Posts: 12696
  • London, England
Re: VLA SSGET
« Reply #1 on: July 07, 2022, 01:49:40 PM »
Perhaps consider the following code:
Code - Auto/Visual Lisp: [Select]
  1. (defun c:tb_dim ( / box dim idx mni mxa obj scl sel )
  2.     (if (setq sel (ssget "_C" '(1 1) '(-1 -1)))
  3.         (progn
  4.             (setq dim (getvar 'dimscale))
  5.             (repeat (setq idx (sslength sel))
  6.                 (setq idx (1- idx)
  7.                       obj (vlax-ename->vla-object (ssname sel idx))
  8.                 )
  9.                 (vla-getboundingbox obj 'mni 'mxa)
  10.                 (setq box (mapcar '- (vlax-safearray->list mxa) (vlax-safearray->list mni))
  11.                       scl (/ (car box) 34.0)
  12.                 )
  13.                 (prompt (strcat "\nSegment Length: " (rtos (car box) 2 4)))
  14.                 (if (equal scl dim 1e-4)
  15.                     (prompt (strcat "\nDimscale is correct: " (rtos dim 2 4)))
  16.                     (progn
  17.                         (prompt (strcat "\nDimscale changing from [" (rtos dim 2 4) "] to " (rtos scl 2 4)))
  18.                         (setvar 'dimscale scl)
  19.                     )
  20.                 )
  21.             )
  22.         )
  23.         (prompt "\nNothing selected, try again.")
  24.     )
  25.     (princ)
  26. )

A few points to note:
  • Objects must be visible within the drawing area in order to be selected by the ssget function when a graphical selection method is used
  • This uses a repeat loop to iterate over the set - you may wish to consider only operating on the first object in the set, given the operations performed by the function
« Last Edit: July 07, 2022, 04:45:26 PM by Lee Mac »

jlogan02

  • Bull Frog
  • Posts: 275
Re: VLA SSGET
« Reply #2 on: July 07, 2022, 04:18:28 PM »
Perhaps consider the following code:
Code - Auto/Visual Lisp: [Select]
  1. (defun c:tb_dim ( / box dim idx mni mxa obj scl sel )
  2.     (if (setq sel (ssget "_C" '(1 1) '(-1 -1)))
  3.         (progn
  4.             (setq dim (getvar 'dimscale))
  5.             (repeat (setq idx (sslength sel))
  6.                 (setq idx (1- idx)
  7.                       obj (vlax-ename->vla-object (ssname sel idx))
  8.                 )
  9.                 (vla-getboundingbox obj 'mni mxa) ;;added missing quote in front of mxa
  10.                 (setq box (mapcar '- (vlax-safearray->list mxa) (vlax-safearray->list mni))
  11.                       scl (/ (car box) 34.0)
  12.                 )
  13.                 (prompt (strcat "\nSegment Length: " (rtos (car box) 2 4)))
  14.                 (if (equal scl dim 1e-4)
  15.                     (prompt (strcat "\nDimscale is correct: " (rtos dim 2 4)))
  16.                     (progn
  17.                         (prompt (strcat "\nDimscale changing from [" (rtos dim 2 4) "] to " (rtos scl 2 4)))
  18.                         (setvar 'dimscale scl)
  19.                     )
  20.                 )
  21.             )
  22.         )
  23.         (prompt "\nNothing selected, try again.")
  24.     )
  25.     (princ)
  26. )

A few points to note:
  • Objects must be visible within the drawing area in order to be selected by the ssget function when a graphical selection method is used

Will be sure to add a zoom extents.

  • This uses a repeat loop to iterate over the set - you may wish to consider only operating on the first object in the set, given the operations performed by the function
Code - Auto/Visual Lisp: [Select]
  1. (setq idx (sslength)) ;;removed (repeat
  2.   (setq idx (1- idx)
  3.      obj (vlax-ename->vla-object (ssname sel idx))
  4.    )
  5. ....
  6.  
  7. ;;) repeat paren removed
  8.  
    This seems to work but am not sure it's accomplishing what you suggest.


J. Logan
ACAD 2018

I am one with the Force and the Force is with me.
AutoCAD Map 2018 Windows 10

Lee Mac

  • Seagull
  • Posts: 12696
  • London, England
Re: VLA SSGET
« Reply #3 on: July 07, 2022, 04:45:49 PM »
If you're only interested in one object, you can omit the index variable altogether - hence the code may become:
Code - Auto/Visual Lisp: [Select]
  1. (defun c:tb_dim ( / box dim mni mxa obj scl sel )
  2.     (if (setq sel (ssget "_C" '(1 1) '(-1 -1)))
  3.         (progn
  4.             (setq dim (getvar 'dimscale)
  5.                   obj (vlax-ename->vla-object (ssname sel 0))
  6.             )
  7.             (vla-getboundingbox obj 'mni 'mxa)
  8.             (setq box (mapcar '- (vlax-safearray->list mxa) (vlax-safearray->list mni))
  9.                   scl (/ (car box) 34.0)
  10.             )
  11.             (prompt (strcat "\nSegment Length: " (rtos (car box) 2 4)))
  12.             (if (equal scl dim 1e-4)
  13.                 (prompt (strcat "\nDimscale is correct: " (rtos dim 2 4)))
  14.                 (progn
  15.                     (prompt (strcat "\nDimscale changing from [" (rtos dim 2 4) "] to " (rtos scl 2 4)))
  16.                     (setvar 'dimscale scl)
  17.                 )
  18.             )
  19.         )
  20.         (prompt "\nNothing selected, try again.")
  21.     )
  22.     (princ)
  23. )

jlogan02

  • Bull Frog
  • Posts: 275
Re: VLA SSGET
« Reply #4 on: July 07, 2022, 04:49:58 PM »
I swear to got I tried that!!! Musta not been squinting just right.

Thanks Lee.

Tried to combine this piece of code with another piece of code so they run from the same Defun.

It all works but I'm getting this as a return result.

Segment Length: 272.0000
Dimscale is correct: 8.0000
Segment Length: 272.0000
Dimscale is correct: 8.0000
Segment Length: 272.0000
Dimscale is correct: 8.0000
Segment Length: 272.0000
Dimscale is correct: 8.0000
Segment Length: 272.0000
Dimscale is correct: 8.0000
Segment Length: 272.0000
Dimscale is correct: 8.0000
Segment Length: 272.0000
Dimscale is correct: 8.0000
Segment Length: 272.0000
Dimscale is correct: 8.0000
Segment Length: 272.0000
Dimscale is correct: 8.0000
Segment Length: 272.0000
Dimscale is correct: 8.0000
Error: Function cancelledSpecify height of text or [Annotative] <1.1248>: *Cancel*

Unless I escape, it could run for days. But you get the idea.

Code - Auto/Visual Lisp: [Select]
  1. ;;; Sets dimscale based on length of Bottom or Top white border line.
  2. ;;; TB_DIM at command line
  3. ;;; ---------------------------------------------------------------------------------
  4. ;;;     Created 07/05/22 by Jerry Logan
  5. ;;;     Assist from MHupp/Lee Mac in The Swamp
  6. ;;;  Routine selects bottom white border line, checks it's length and sets  
  7. ;;;  Dimscale equal to that length by dividing bottom line by 34.
  8. ;;;  Refer to OneNote - Drawing Conversion Help folder "Conversion Help" page
  9. ;;;  DIMSCALE/BORDER SIZE CHART for correct dimscales.
  10. ;;; ---------------------------------------------------------------------------------
  11.  
  12. (defun tb_dim ( / box dimsc idx mni mxa obj scl sel )
  13.     (if (setq sel (ssget "_C" '(1 1) '(-1 -1)))
  14.         (progn
  15.             (setq dimsc (getvar 'dimscale)
  16.                   obj (vlax-ename->vla-object (ssname sel 0))
  17.                 )
  18.                 (vla-getboundingbox obj 'mni 'mxa)
  19.                 (setq box (mapcar '- (vlax-safearray->list mxa) (vlax-safearray->list mni))
  20.                       scl (/ (car box) 34.0)
  21.                 )
  22.                 (prompt (strcat "\nSegment Length: " (rtos (car box) 2 4)))
  23.                 (if (equal scl dimsc 1e-4)
  24.                     (prompt (strcat "\nDimscale is correct: " (rtos dimsc 2 4)))
  25.                     (progn
  26.                         (prompt (strcat "\nDimscale changing from [" (rtos dimsc 2 4) "] to " (rtos scl 2 4)))
  27.                         (setvar 'dimscale scl)
  28.                     )
  29.                 )
  30.         )
  31.         (prompt "\nNothing selected, try again.")
  32.     )
  33.     (princ)
  34. )
  35.  
  36. ;;; -----------------------------------------------------
  37.  
  38. (defun Sctxt ( / dimsc )       
  39. (setq dimsc (getvar "dimscale"))
  40.  
  41.         (setvar "CMDECHO" 0)
  42.         (setvar "BLIPMODE" 0)
  43.  
  44.         (command ".style" "Standard" "ipco.shx" (* 1.000 dimsc) "0.85" "0" "n" "n" "n")
  45.         (command ".style" "L080" "ipco.shx" (* 0.0781 dimsc) "0.85" "0" "n" "n" "n")
  46.         (command ".style" "L100" "ipco.shx" (* 0.0938 dimsc) "0.85" "0" "n" "n" "n")
  47.         (command ".style" "L120" "ipco.shx" (* 0.1094 dimsc) "0.85" "0" "n" "n" "n")
  48.         (command ".style" "L140" "ipco.shx" (* 0.1406 dimsc) "0.85" "0" "n" "n" "n")
  49.         (command ".style" "L175" "ipco.shx" (* 0.1563 dimsc) "0.85" "0" "n" "n" "n")
  50.         (command ".style" "L200" "ipco.shx" (* 0.1719 dimsc) "0.85" "0" "n" "n" "n")
  51.         (command ".style" "L240" "ipco.shx" (* 0.2187 dimsc) "0.85" "0" "n" "n" "n")
  52.         (command ".style" "LS080" "ipco.shx" (* 0.0781 dimsc) "0.85" "20" "n" "n" "n")
  53.         (command ".style" "LS100" "ipco.shx" (* 0.0938 dimsc) "0.85" "20" "n" "n" "n")
  54.         (command ".style" "LS120" "ipco.shx" (* 0.1094 dimsc) "0.85" "20" "n" "n" "n")
  55.         (command ".style" "LS140" "ipco.shx" (* 0.1406 dimsc) "0.85" "20" "n" "n" "n")
  56.         (command ".style" "LS175" "ipco.shx" (* 0.1563 dimsc) "0.85" "20" "n" "n" "n")
  57.         (command ".style" "LS200" "ipco.shx" (* 0.1719 dimsc) "0.85" "20" "n" "n" "n")
  58.         (command ".style" "LS240" "ipco.shx" (* 0.2187 dimsc) "0.85" "20" "n" "n" "n")
  59. )
  60.  
  61. (defun c:Txt_Dim ()
  62.   (while
  63.    (tb_dim)
  64.    (sctxt)
  65.   )
  66. )
  67.  
  68.  
  69.  
« Last Edit: July 07, 2022, 05:21:33 PM by jlogan02 »
J. Logan
ACAD 2018

I am one with the Force and the Force is with me.
AutoCAD Map 2018 Windows 10

ronjonp

  • Needs a day job
  • Posts: 7437
Re: VLA SSGET
« Reply #5 on: July 07, 2022, 05:36:29 PM »
I swear to got I tried that!!! Musta not been squinting just right.

Thanks Lee.

Tried to combine this piece of code with another piece of code so they run from the same Defun.

It all works but I'm getting this as a return result.

Segment Length: 272.0000
Dimscale is correct: 8.0000
Segment Length: 272.0000
Dimscale is correct: 8.0000
Segment Length: 272.0000
Dimscale is correct: 8.0000
Segment Length: 272.0000
Dimscale is correct: 8.0000
Segment Length: 272.0000
Dimscale is correct: 8.0000
Segment Length: 272.0000
Dimscale is correct: 8.0000
Segment Length: 272.0000
Dimscale is correct: 8.0000
Segment Length: 272.0000
Dimscale is correct: 8.0000
Segment Length: 272.0000
Dimscale is correct: 8.0000
Segment Length: 272.0000
Dimscale is correct: 8.0000
Error: Function cancelledSpecify height of text or [Annotative] <1.1248>: *Cancel*

Unless I escape, it could run for days. But you get the idea.

Code - Auto/Visual Lisp: [Select]
  1. ;;; Sets dimscale based on length of Bottom or Top white border line.
  2. ;;; TB_DIM at command line
  3. ;;; ---------------------------------------------------------------------------------
  4. ...
  5.  
It's because you are running the functions in a while loop. Remove (while ) and it should work.
Code - Auto/Visual Lisp: [Select]
  1. (defun c:Txt_Dim ()
  2.   (while
  3.    (tb_dim)
  4.    (sctxt)
  5.   )
  6. )

Windows 11 x64 - AutoCAD /C3D 2022

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jlogan02

  • Bull Frog
  • Posts: 275
Re: VLA SSGET
« Reply #6 on: July 07, 2022, 06:00:35 PM »
Thanks Ron.
J. Logan
ACAD 2018

I am one with the Force and the Force is with me.
AutoCAD Map 2018 Windows 10