Stats

  • Locked Locked
  • Replies 2
  • Subscribers 143
  • Views 14118
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

dbLayerAnd() function is not working

Phuong Truong

Dear all,

I need your help on.

Below is my code:

procedure( checkNoShapeOutsideTheBoundary()

cv = dbOpenCellViewByType("testnew" "abc" "layout" "maskLayout" "r")

prBoundary = '( ((0.0 0.0) (0.03 0.01725)) )

shape_location = '( ((0.016 0.012) (0.0175 0.0125)) )


results = dbLayerAnd(cv  "M1"  shape_location  prBoundary)
println(results)

);procedure

***prBoundary: PrBoundary layer

***shape_location: M1 layer


But return the results: nil

Is there something wrong with my code? Please help to clarify.
Thank you.

Best Regards,

Phuong Truong

  • Andrew Beckett

    Hi Phuong,

    It fails because dbLayerAnd does not work with lists of bBox descriptions. It works with lists of database objects for the shapes you want to do the And operation and generations the new shapes in the cellView. Instead you should use dbPointArrayAnd, but this expects lists of lists of points (each list of points is the points in a polygon, so not just two points for a rectangle). You could do something like this:

    procedure(CCFbBoxToPolygon(bBox)
      destructuringBind(((llx lly) (urx ury)) bBox
        list(llx:lly llx:ury urx:ury urx:lly)
      )
    )

    result=dbPointArrayAnd(cv mapcar('CCFbBoxToPolygon shape_location) mapcar('CCFbBoxToPolygon prBoundary))

    By the way, if you were expecting your code to create a shape on M1, you probably should have opened the cellView in "a" mode (it would create the shapes, but it won't be saveable if you open in readonly mode)

    Regards,

    Andrew.

  • Phuong Truong
    in reply to Andrew Beckett

    Hi Andrew,
    Thanks so much for your help.

    Best Regards,

    Phuong Truong

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.