; SQUARING ALL CIRCLES -OR HEXAGONING
; Please post debugging results - this is written today!!
;COMMAND: Circulation - converts all selected circles into polygones
;File: Circulation.lsp
;Written by Dr. Tigrek
;
;Get circles by any method you like - follow prompts to get objects
;only circles will be taken seriously, others will be ignored
(defun C:Circulation()
;get the few parameters
(initget (+ 1 2 4))
(while (<
(setq HowManySides (getint "\nHow Many Sides to each Polygon ?"

)
3)
)
(initget 1 "Inside Outside"

(setq InsideOutside (getkword "\nPolygon Inside or Outside the circle (I/O): "

)
(if (= InsideOutside "Inside"

(setq InsideOutside "_I"

(setq InsideOutside "_C"

)
;big IF
(IF
;this allows select objects by any way you like
(setq sset (ssget (list (cons 0 "CIRCLE"

)))
;PROGN IS NEEDED BECAUSE MORE THAN ONE STATEMENTS FOLLOW IF TRUE
(PROGN
;this tells how many circles were caught, picked, windowed, crossed
(setq ssetl (sslength sset))
;just for information, to see the circle count on command line
(print ssetl)(princ " Circles found..."
(setq i 0)
(while (< i ssetl)
(setq Edna (ssname sset i))
(setq Eddy (entget Edna))
(setq Typy (dxf 0 Eddy)
; this is not really used. Was for debugging
Insy (dxf 10 Eddy)
; Insertion point of circle we are going to erase
Rady (dxf 40 Eddy)
;radius of circle we are going to erase
)
;this is tricky (x Y) = (10 20) will be converted into "10,20"
(setq Insy (strcat
(rtos (car Insy) 2)
","
(rtos (cadr Insy))
)
)
;and this converts R= 25.5 into "25.5"
(setq rady (rtos rady 2))
;this was for debugging. Don't need anymore
;(print Insy)(print Rady)
;erase the circle
(COMMAND "_erase" Edna ""

;insert block circle with scale factor
;to correspond to radius of erased circle
(COMMAND "_polygon" HowManySides Insy InsideOutside rady)
(setq i (+ 1 i));NEXT CIRCLE
);while ends here
)(print "No Circles Found!" ));big IF ends here
(princ);suppress repeated prompt
);end of main function
;Useful function to extract-
;Entity name "CIRCLE n= 0
;Insy InsertionPoint n= 10
;rady radious n= 40
;ed is full entity data
(defun dxf (n ed) (cdr (assoc n ed)))
;FOR ALL VERSIONS OF AUTOCAD
;SAVE AS Circulation.lsp to directory \SUPPORT;and from command line: (load "Circulation"

;then, on command line, type Circulation AND FOLLOW SELLECT-OBJECT PROMPTS
;ERASES ALL PICKED CIRCLES AND REPLACES EACH WITH A POLYGON
;FITTING INSIDE/OUTSIDE OF EACH ERASED CIRCLE
;AND INSERTED AT ITS CENTER POINT,
;NOW CIRCLES ARE POLYGONS
;RICHLY COMMENTED FOR YOUR CONVENIENCE AND MODIFICATIONS
;FOR QUESTIONS please call at:
;
;I am home most of the time.