Selection area in a layout.

Discussion in 'Cadence' started by gerry, Nov 6, 2006.

  1. gerry

    gerry Guest

    Here is an answer I got from Cadence when the default selection area
    has changed:

    There is a .cdsenv environment variable that will make the tool do what
    the you want.

    --------------------
    layout useTrueBBox boolean t
    --------------------

    This is the opposite of what I wanted, but it was the clue I needed. So
    I changed this default
    to
    --------------------------------------------------
    layout useTrueBBox boolean nil
    ---------------------------------------------------

    And " presto" I get what I wanted.

    The behavior I was looking for is to have the selection area of a
    placed cell be reflected by the first
    polygon (rectangle?) on the "instance drawing" layer by default and not
    the bBox of the cell.

    Looks like some point in the last 5 years, cadence has silently changed
    the default behavior.
    (I think this because extensive searching of here and sourcelink etc.
    has not documented this
    change!)

    Enjoy.

    -- Gerry
     
    gerry, Nov 6, 2006
    #1
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