Create a polyline from a given area

[cjk]

Does anyone have a lisp routine that can create a polyline from a given area & one given x or y distance? We have a list of room areas that we must have the exact SF & fit several of these rooms into an existing floor plan. It is very tedious to change a vertex to get the SF.

[nestly]

Not a lisp, but did you know you can create a rectangle based on area and the length of one of the sides?

 

http://screencast.com/t/6xHqF6XX

[cjk]

How about a non rectangle?

[edwinprakoso]

Have you tried using parametric feature? You should be able to do it, but you need to be good in math

[edwinprakoso]

I created this code for regular polygons. Please don't laugh... this is my 2nd AutoLISP code

 

; This LISP will create regular polygon by defining polygon area and number of sides
; Created by Edwin Prakoso
; Website: http://cad-notes.com

(defun c:polyarea (/ n a apt)
 (setq n (getint "\nNumber of Polygon Sides: "))
 (setq a (getreal "\nExpected Area: "))
 (setq apt (sqrt (/ (/ a (/ (sin(/ pi n)) (cos(/ pi n)))) n))) ;calculating apothem for circumscribed polygon
 (setq ptloc (getpoint "\nPick Location: "))
 (command "_POLYGON" n ptloc "C" apt) 
)

Edited November 24, 2010 by edwinprakoso