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Area calculation from layout in cadence 6.1.4

kpkp

Hi all,

I have generated a layout in cadence virtuoso layout editor...but dont knw how to calculate the area of layout? please anybody can help me?
Thanx in advance...

Parents

  • This function can be used. For a polygon it effectively "integrates over the boundary" (sort of).

    /***************************************************************
*                                                              *
*                       (abArea object)                        *
*                                                              *
*               Calculate the area of an object.               *
*      Currently only works with polygons and rectangles.      *
*                                                              *
***************************************************************/

(procedure (abArea object)
  (let (sum crd lastPt firstPt crdList area corners ll ur dx dy objType)
        (setq objType (dbGetq object objType))
        (if (equal objType "polygon") 
            (progn
             (setq crdList (dbGetq object points))
             (setq sum 0)
             (setq firstPt (setq lastPt (car crdList)))
             (setq crdList (cdr crdList))
             (foreach crd crdList
                      (setq dx (difference (xCoord crd) (xCoord lastPt)))
                      (setq sum (plus sum (times dx (plus (yCoord crd) (yCoord lastPt)))))
                      (setq lastPt crd))
             (setq sum (plus sum
                             (times (difference (xCoord firstPt) (xCoord lastPt))
                                    (plus (yCoord firstPt) (yCoord lastPt)))))
             (setq area (times 0.5 (abs sum))))
            (when (equal objType "rect") 
                  (setq corners (dbGetq object bBox))
                  (setq ll (car corners))
                  (setq ur (cadr corners))
                  (setq dx (difference (xCoord ll) (xCoord ur)))
                  (setq dy (difference (yCoord ll) (yCoord ur)))
                  (setq area (abs (times dx dy))))
            )
       area))

     

Reply

  • This function can be used. For a polygon it effectively "integrates over the boundary" (sort of).

    /***************************************************************
*                                                              *
*                       (abArea object)                        *
*                                                              *
*               Calculate the area of an object.               *
*      Currently only works with polygons and rectangles.      *
*                                                              *
***************************************************************/

(procedure (abArea object)
  (let (sum crd lastPt firstPt crdList area corners ll ur dx dy objType)
        (setq objType (dbGetq object objType))
        (if (equal objType "polygon") 
            (progn
             (setq crdList (dbGetq object points))
             (setq sum 0)
             (setq firstPt (setq lastPt (car crdList)))
             (setq crdList (cdr crdList))
             (foreach crd crdList
                      (setq dx (difference (xCoord crd) (xCoord lastPt)))
                      (setq sum (plus sum (times dx (plus (yCoord crd) (yCoord lastPt)))))
                      (setq lastPt crd))
             (setq sum (plus sum
                             (times (difference (xCoord firstPt) (xCoord lastPt))
                                    (plus (yCoord firstPt) (yCoord lastPt)))))
             (setq area (times 0.5 (abs sum))))
            (when (equal objType "rect") 
                  (setq corners (dbGetq object bBox))
                  (setq ll (car corners))
                  (setq ur (cadr corners))
                  (setq dx (difference (xCoord ll) (xCoord ur)))
                  (setq dy (difference (yCoord ll) (yCoord ur)))
                  (setq area (abs (times dx dy))))
            )
       area))

     

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