Total Area Autocad Lisp

Mastering the "Total Area" in AutoCAD: The Ultimate Guide to Lisp Routines

Introduction: The Pain Point of Polyline Area Calculation

(princ "\n----------------------------------------") (princ (strcat "\nTOTAL AREA: " (rtos total-area 2 2) " sq units"))

Customization:

Change precision by modifying the prec variable (line ~15): total area autocad lisp

The code (yes, you can copy this)

Save this as TOTALAREA.LSP and load it with APPLOAD: Mastering the "Total Area" in AutoCAD: The Ultimate

Advanced Total Area LISP: With Unit Conversion and Annotations

For professional work, you need more. Let me walk you through a more robust routine called AT (Add Total) that is popular among surveyors and architects. If your drawing units are millimeters and you

Example: set output to square meters (if drawing units are mm)

If your drawing units are millimeters and you want m², set: scale = 1e-6

Sample Advanced Code Snippet (Conversion to Acres)

(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)
)