TheSwamp
Code Red => AutoLISP (Vanilla / Visual) => Topic started by: MSTG007 on September 09, 2021, 04:54:25 PM
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Gotta question, I stumbled upon Mr Rons Area Field routine. how would I modify the field value to become a formula?
I want to create a formula which would take the value,
i.e. (((([Area Field]+[Calculated Area Field])/2)*4)/43560)
Calculated Area Field
Taking the selected polyline, offsetting it 12' inside and using that value. (Not sure how to make that happen. lol.)
Thanks for any direction!
(strcat
"%<\\AcObjProp Object(%<\\_ObjId "
(if (> (vl-string-search "x64" (getvar 'platform)) 0)
(vlax-invoke-method
(cond (oUtil)
((setq oUtil (vla-get-utility acDoc)))
)
'getobjectidstring
x
:vlax-False
)
(rtos (vla-get-objectid x) 2 0)
)
">%).Area \\f \"%pr2%lu2%ct4%qf1 SQ. FT.\">%" ;; I think this is the area to modify
)
(vl-load-com)
(defun c:FOO (/ *error* acDoc oSpace origin insertionPoint oUtil oMText)
(defun *error* (msg)
(if acDoc
(vla-endundomark acDoc)
)
(cond ((not msg)) ; Normal exit
((member msg '("Function cancelled" "quit / exit abort"))) ; <esc> or (quit)
((princ (strcat "\n** Error: " msg " ** "))) ; Fatal error, display it
)
(princ)
)
(if (ssget "_:L" '((0 . "CIRCLE,*POLYLINE")))
(progn
(vla-startundomark
(setq acDoc (vla-get-activedocument (vlax-get-acad-object)))
)
(setq oSpace
(vlax-get
acDoc
(if (= 1 (getvar 'cvport)) 'paperspace 'modelspace)
)
)
(setq origin (vlax-3d-point '(0 0 0)))
(vlax-for x (vla-get-activeselectionset acDoc)
;; Calculate the centroid
(vla-getboundingbox x 'mn 'mx)
(setq insertionPoint
(vlax-3d-point
(mapcar '*
(mapcar '+
(vlax-safearray->list mn)
(vlax-safearray->list mx)
)
'(0.5 0.5 0.5)
)
)
)
;; Add mtext
(setq oMText
(vla-addmtext
oSpace
origin
0.0
(strcat
"%<\\AcObjProp Object(%<\\_ObjId "
(if (> (vl-string-search "x64" (getvar 'platform)) 0)
(vlax-invoke-method
(cond (oUtil)
((setq oUtil (vla-get-utility acDoc)))
)
'getobjectidstring
x
:vlax-False
)
(rtos (vla-get-objectid x) 2 0)
)
">%).Area \\f \"%pr2%lu2%ct4%qf1 SQ. FT.\">%"
)
)
)
(vla-put-attachmentpoint oMText acmiddlecenter)
(vla-move oMText origin insertionPoint)
;;<-- Set MText height, style, etc. here... Example:
(vla-put-height oMText (/ 1. (getvar 'cannoscalevalue)))
;; ... others.
)
)
)
(*error* nil)
)
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You can create a formula using the field command to decipher the syntax needed:
%<\AcExpr ((%<\_FldPtr 2465500283456>%+%<\_FldPtr 2465500283968>%/2)*4/43560) \f "%lu2">%
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I'm posting a link to SMadsen's "Room Area lisp"; it doesn't use fields but it's just a simple attribute block tied to a pline's handle. Very nice routine.
https://www.theswamp.org/index.php?topic=32060.msg375362#msg375362
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I was able to figure the top part out.
;; "%<\\AcObjProp Object(%<\\_ObjId "
"%<\\AcExpr %<\\AcObjProp Object(%<\\_ObjId "
I know what the FLDPTR is supposed to do, but not sure how to get that to work in this scenario.
%<\AcExpr ((%<\_FldPtr 2465500283456>%+%<\_FldPtr 2465500283968>%/2)*4/43560)
;; Add mtext
(setq oMText
(vla-addmtext
oSpace
origin
0.0
(strcat
;; "%<\\AcObjProp Object(%<\\_ObjId "
"%<\\AcExpr %<\\AcObjProp Object(%<\\_ObjId "
(if (> (vl-string-search "x64" (getvar 'platform)) 0)
(vlax-invoke-method
(cond (oUtil)
((setq oUtil (vla-get-utility acDoc)))
)
'getobjectidstring
x
:vlax-False
)
(rtos (vla-get-objectid x) 2 0)
)
;; ">%).Area \\f \"%pr2%lu2%ct4%qf1 SQ. FT.\">%"
;; %<\AcExpr ((%<\_FldPtr 2465500283456>%+%<\_FldPtr 2465500283968>%/2)*4/43560) \\f "%lu2">%
%<\AcExpr ((%<\_FldPtr 2465500283456>%+%<\_FldPtr 2465500283968>%/2)*4/43560)
\\f "%lu2">%
)
)
)
bashing my head lol
-
Need to think a bit more but need something like
"%<\\AcExpr %<\\AcObjProp Object(%<\\_ObjId " (itoa (vla-get-Objectid att)) ">%).TextString>% * 2 >%" for twice size
This was select blocks 1 attribute and add the attributes and put answer into a mtext.
(defun c:test ( / obj len area lay)
(setq lst '() x -1 str "")
(if (setq ss (ssget '((0 . "INSERT"))))
(progn
(foreach att (vlax-invoke (vlax-ename->vla-object (ssname SS (setq x (+ x 1)) )) 'getattributes)
(if (=(vla-get-tagstring att) "NAME")
(setq str (strcat str "%<\\AcObjProp Object(%<\\_ObjId " (itoa (vla-get-Objectid att)) ">%).TextString>%"))
)
)
(repeat (- (sslength ss) 1)
(foreach att (vlax-invoke (vlax-ename->vla-object (ssname SS (setq x (+ x 1)) )) 'getattributes)
(if (=(vla-get-tagstring att) "NAME")
(setq str (strcat str "+%<\\AcObjProp Object(%<\\_ObjId " (itoa (vla-get-Objectid att)) ">%).TextString>%"))
)
)
)
(setq str (strcat "%<\\AcExpr " str " >%"))
)
)
(princ)
(setq obj (vlax-ename->vla-object (car (entsel "Pick Mtext obj"))))
(vla-put-textstring obj str)
(princ)
)
(c:test)
You need to make the string and yes can use .textstring not fldptr, look at STR type !str.
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Is there a way to get the field pointer ID when we have field code such as "%<\\AcObjProp Object(%<\\_ObjId " (itoa (vla-get-Objectid att)) ">%).TextString>%"?
if yes, we can then use the FldPtr instead of using standard fieldcode when using AcExpr .