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How to calculate the length of a routing which is in different metal connected through via

AmitBiswas
Hi, I am trying to find out the length of one routing by clicking at two points of that routing. Here the routing is in metal2 and metal3 connected through via23. Is there any way to check in SKILL that exactly where that metal is getting connected with other one through via. Consider that all are paths there is no rectangle or polygon. Is it possible to do it using only SKILL or I need to use Assura also.............? Thanks & Regards, Amit
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  • Thank you Derek, you are kinder than I would have been :-)

    It might be possible to guess which direction the path was traveling (for a segment?) and from this you might be able to work out which dimension of a rectangular shape to take into consideration for the path length. I believe that Derek's pseudo-code shows how to"walk the shapes" in a similar fashion to the way that Mark Net does.  I was just looking to see if Mark Net used hilight objects or probes to mark the shapes and if these are available in SKILL, but I could not find the objects associated with the marked net - this would have been a nice way to get the shapes involved, and then the task might have been easier. Even without Mark Net, you can use Derek's example to find the shapes involved, and even copy and merge these in a scratch cellview so that you only have one path/polygon to work with, then it would be a fairly straightforward thing to find the length of such a shape.

    Another approach is to use extraction tools such as Diva or Assura to follow a path and measure the length, but I do not work with these tools enough to really be able to help in that direction.

    Apart from this, as Derek mentions, this is not a trivial undertaking, and unlikely to be answered in full in such a forum.

    Good luck!

    Regards,

    Lawrence.

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  • Thank you Derek, you are kinder than I would have been :-)

    It might be possible to guess which direction the path was traveling (for a segment?) and from this you might be able to work out which dimension of a rectangular shape to take into consideration for the path length. I believe that Derek's pseudo-code shows how to"walk the shapes" in a similar fashion to the way that Mark Net does.  I was just looking to see if Mark Net used hilight objects or probes to mark the shapes and if these are available in SKILL, but I could not find the objects associated with the marked net - this would have been a nice way to get the shapes involved, and then the task might have been easier. Even without Mark Net, you can use Derek's example to find the shapes involved, and even copy and merge these in a scratch cellview so that you only have one path/polygon to work with, then it would be a fairly straightforward thing to find the length of such a shape.

    Another approach is to use extraction tools such as Diva or Assura to follow a path and measure the length, but I do not work with these tools enough to really be able to help in that direction.

    Apart from this, as Derek mentions, this is not a trivial undertaking, and unlikely to be answered in full in such a forum.

    Good luck!

    Regards,

    Lawrence.

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