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Finding Layer Box In a Instance

harishgurram

 Hi,

I have placed a instance in my cell view(layout). 

Is there any functions to get the bBox of a particular layer purpose pair, with out flattening the instance.

Parents

  • Assuming you have the instance ID captured in the variable instId:

    ;Operate on the master of the instance.

     master = instId~>master

    ;Find the lpp in the master

    lppId = car( setof( lp master~>lpps lp~>layerName == myLayerName && lp~>purpose == myPurpose ) )
    lppShapes = lppId~>shapes

    ; Loop through each shape to find the total bounding box

    bBox = car(lppShapes)~>bBox
    llx = xCoord( car( bBox ) )
    lly = yCoord( car( bBox ) )
    urx = xCoord( cadr( bBox ) )
    ury = yCoord( cadr( bBox ) )

    foreach( shape cdr(lppShapes)
        llxy = car(shape~>bBox)
        urxy = cadr(shape~>bBox)
         when( xCoord(llxy) < llx llx = xCoord(llxy) )
         when( yCoord(llxy) < lly lly = yCoord(llxy) )

    ;; Do the same for urxy

      ) ; foreach
    ;; Now transform the points back to the top level cell
    newBBox = dbTransformUserBBox( list( list( llx lly) list(urx ury) ) getInstTransform( instId ))

    Note: This code was written in this editor and not tested. Use at your own risk.

     Ted

     

Reply

  • Assuming you have the instance ID captured in the variable instId:

    ;Operate on the master of the instance.

     master = instId~>master

    ;Find the lpp in the master

    lppId = car( setof( lp master~>lpps lp~>layerName == myLayerName && lp~>purpose == myPurpose ) )
    lppShapes = lppId~>shapes

    ; Loop through each shape to find the total bounding box

    bBox = car(lppShapes)~>bBox
    llx = xCoord( car( bBox ) )
    lly = yCoord( car( bBox ) )
    urx = xCoord( cadr( bBox ) )
    ury = yCoord( cadr( bBox ) )

    foreach( shape cdr(lppShapes)
        llxy = car(shape~>bBox)
        urxy = cadr(shape~>bBox)
         when( xCoord(llxy) < llx llx = xCoord(llxy) )
         when( yCoord(llxy) < lly lly = yCoord(llxy) )

    ;; Do the same for urxy

      ) ; foreach
    ;; Now transform the points back to the top level cell
    newBBox = dbTransformUserBBox( list( list( llx lly) list(urx ury) ) getInstTransform( instId ))

    Note: This code was written in this editor and not tested. Use at your own risk.

     Ted

     

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