Finding layers and there shapes information present in a instance without flattening it

Finding all the shapes is easy enough with a hierarchical traversal of the database. Finding the bBox of each shape is similarly straightforward (there are numerous posts on the forums explaining how to do a hierarchical traversal).

This may not be what you want though - please make it clear precisely what you mean by "there shapes and bBox information". Also which version are you using (see the Forum Guidelines - the top post in each forum).

Andrew.

Hi Andrew,

Thanks for your suggestion. I am using virtuoso 6.1.6

Here is what I want to do (pardon me if its a no brainier)

Lets say I have three different instance A1, A2 and A3 in my cellview. They are placed horizontally as A1-A2-A3, some shapes present in A2 overlaps with A1 and some shapes overlaps with A3 in such a way that A1 - A3 gets connected (Ex: An M1 shape(a1_m1) of A1 overlaps with a M1 shape(a2_m1) in A2. This M1 shape(a2_m1) is connected to a M2 shape(a2_m2) in A2 throuh via1(a2-via1), finally the M2 shape(a2_m2) overlaps with a M2 shape(a3_m2) in A3. We have a connection from A1 to A3  as (M1-via1-M2), in terms of shape it is a1-m1 -> a2-m1 -> a2-via1->a2_m2->a3-m2). 

I want to determine the connectivity of A1-A3 in terms of  shapes i.e a1-m1 -> a2-m1 -> a2-via1->a2_m2->a3-m2, without flattening A1,A2 or A3.

Thanks,

Shahbaz Sarik

Hi Shahbaz,

Your original question wasn't exactly giving much away as to what your end goal was! Even this is not clear what you're trying to find at the end - other than my assumption which is that you want to find the shapes that make those connections.

Why not use mark net rather than reinventing your own shape chaser (which I'm not going to be able to help you out with - others may have written something they are able to share, but I don't have anything general purpose enough that I could share it)?

You can use leMarkNet() to trace the nets and then leSaveMarkNet() to save the resulting shapes into another cellView (you could open a temporary cellView for this purpose). The shapes in the saved cellView would be the flat shapes that make up those nets without any of the other unrelated shapes through the hierarchy.

Regards,

Andrew.

Hi Andrew,

Thanks for you reply.

My end goal is to create a report file which shows how the instances are connected in a cellview.

I will try out the suggestion provided by you.