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Using Skill to Select Vias not fully enclosed by metal

Terry S

Is there a way to only select vias that cross a shape boundry?

I have a very large FET that has numerous Source and Drain Vias and the top level metal covering them now has to be slotted leaving a large amount of existing Vias to be manually deleted where the slots pass over them.

I can generate another layer that consists of simply the slots and then, if CDS OA 6.1.5 has the capability, then one could simply select only the Vias that touch the newly created shapes.

Is that possible to do in Skill?

Thanks

Terry 

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  • Andrew Beckett

    A little further optimization (just to give an alternative and illustrate some of the flexibility of SKILL) - use:

    vias=foreach(mapcan shape testShapes dbViaQuery(lcv shape~>bBox))
    mapc('dbDeleteObject vias)

    The foreach mapcan will append the lists as it goes along - no need to use the apply 'nconc afterwards. And for the deletion, since there's not much likelihood that you'll want the return value of the mapcar (which will be a list of t's and nil's depending upon the success of the dbDeleteObject), use mapc which just returns the original list (and so is cheaper).

    Regards,

    Andrew.

     

Reply
  • Andrew Beckett

    A little further optimization (just to give an alternative and illustrate some of the flexibility of SKILL) - use:

    vias=foreach(mapcan shape testShapes dbViaQuery(lcv shape~>bBox))
    mapc('dbDeleteObject vias)

    The foreach mapcan will append the lists as it goes along - no need to use the apply 'nconc afterwards. And for the deletion, since there's not much likelihood that you'll want the return value of the mapcar (which will be a list of t's and nil's depending upon the success of the dbDeleteObject), use mapc which just returns the original list (and so is cheaper).

    Regards,

    Andrew.

     

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