Total Area Autocad Lisp ~repack~ Guide

Mastering the Total Area AutoCAD LISP: The Ultimate Guide to Automating Area Calculations

: The script initializes a counter at index 0 and loops through every object captured in the selection set.

To ensure your Total Area LISP functions flawlessly every time, keep these draft best practices in mind: total area autocad lisp

If your drawing units are in millimeters (common in manufacturing and metric architecture), the LISP calculates the total area in .

Here is a simple Lisp program that calculates the total area of a drawing: Mastering the Total Area AutoCAD LISP: The Ultimate

There is no single "official" Total Area Lisp, but the most widely used and reliable version is often called . Below is the fully commented, production-ready code.

(defun c:TotalArea ( / ss count idx totalArea obj ent objName area) (vl-load-com) (setq totalArea 0.0) ;; Prompt the user to select objects (princ "\nSelect closed polylines, circles, hatches, or regions: ") (setq ss (ssget '((0 . "LWPOLYLINE,POLYLINE,CIRCLE,HATCH,REGION")))) (if ss (progn (setq count (sslength ss) idx 0) ;; Loop through all selected objects (while (< idx count) (setq ent (ssname ss idx) obj (vlax-ename->vla-object ent) objName (vlax-get-property obj 'ObjectName)) ;; Verify the object has an Area property and is closed if it is a polyline (if (vlax-property-available-p obj 'Area) (progn (setq area (vlax-get-property obj 'Area)) (setq totalArea (+ totalArea area)) ) ) (setq idx (1+ idx)) ) ;; Print the final results to the command line (princ (strcat "\nTotal Objects Selected: " (itoa count))) (princ (strcat "\nTotal Cumulative Area: " (rtos totalArea 2 4))) ) (princ "\nNo valid closed objects selected.") ) (princ) ) (princ "\nType TOTALAREA to run the script.") (princ) Use code with caution. Code Breakdown: How it Works Below is the fully commented, production-ready code

(defun C:AT ( / ss area_list total sf) (setq sf (getreal "\nConversion factor (1 drawing unit = ? feet): ")) (if (= sf nil) (setq sf 1.0)) (setq ss (ssget '((0 . "LWPOLYLINE,POLYLINE,CIRCLE,ELLIPSE,REGION")))) (if ss (progn (setq total 0.0) (repeat (setq i (sslength ss)) (setq ent (ssname ss (setq i (1- i)))) (setq area (vlax-curve-getArea ent)) (setq total (+ total area)) ) (setq total_sqft (* total sf sf)) (setq total_acres (/ total_sqft 43560.0)) (alert (strcat "Total Area: " (rtos total_acres 2 2) " Acres")) ;; Optional: Insert text (command "_.MTEXT" (getpoint "\nPick text insertion point: ") "J" "TL" "W" "0" (strcat "TOTAL AREA = " (rtos total_acres 2 2) " ACRES") "") ) (princ "\nNo objects selected.") ) (princ) )

To use this Lisp code in AutoCAD, follow these steps: