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Other CAD Tools >> Entry Tools >> Get Layout Objects in hierarchical view with skill
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Message started by Berti on Aug 10^th, 2009, 2:12am

Title: Get Layout Objects in hierarchical view with skill
Post by Berti on Aug 10^th, 2009, 2:12am

Hi all,

I got a hierarchical layout, where I need to adjust the sizes of the vias. For this purpose I started writing a skill script using the following commands:

Code:

cv=geGetEditCellView()
l_rect=setof(shape cv~>shapes shape~>objType=="rect")

Unfortunately this only select the rectangles in the top view, but doesn't go down in the hierarchy. How can I get all the rectangles (vias) in a hierarchical view?

Thanks for advices, Cheers

Title: Re: Get Layout Objects in hierarchical view with skill
Post by Andrew Beckett on Aug 15^th, 2009, 6:59am

You'll typically need to do some kind of recursive traversal of the instances (if you need to visit every instance) or instanceMasters (if going to each master once is sufficient). Assuming you want to visit just each master once, something like:

Code:

procedure(EXtraverseHierarchy(cellView @optional (doneSoFar makeTable('visited nil)))
let((rects)
foreach(master cellView~>instanceMasters
unless(doneSoFar[master]
doneSoFar[master]=t
EXtraverseHierarchy(master doneSoFar)
)
)
rects=setof(shape cv~>shapes shape~>objType=="rect")
; do whatever you were going to do with the rects
)
)

Sorry if the formatting is not as neat as I would do usually - I just typed this in off the top of my head using a proportional font, so it's a little hard to make it all line up... (actually by the time I'd written that explanation, I could have done it!).

Best Regards,

Andrew.