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How to draw a serie of polygons with gradually tilted angles

yichun

 There is a row of "a" rectangle objects (about a few thousands) and a row of "b" rectangle objects. The "a" objects has a pitch distance of 0.5 mm, while the "b" object has a pitch distance of 1mm. I want to connect "a" to "b" using a serie of simple polygons (with a width of 0.2mm).    Is there a program to do this, or I have to draw it one by one manually.  Thanks.

a      a       a        a         a       a         a          a         a    ......

 

  

b            b            b            b              b               b                b               b                b                b  ....       

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  • Hi Yichun,

    If you need to connect each "a" to each "b" in turn, then you could create a path for each pair as Tongju suggested, and this is perhaps the best approach, within some kind of "for" loop.  I would not have thought that you would be able to have a connection cell however, since the horizontal distance between "a" and "b" varies.  There are not enough details in your post to know how large each "a" and "b" rectangle are, or their vertical separation, so any code would have to be a guess, but perhaps something like the following:


    astep = 0.5
    bstep = 1.0
    maxy = ??
    miny = ??
    width = 0.2
    sep = 2 * width

    for(i 0 <maxNumOfRects>
      dbCreatePath(geGetEditCellView() "metal1"
        list(astep*i:maxy  astep*i:miny+(sep*i)
          bstep*i:miny+(sep*i)  bstep*i:miny)
        width
      )
    )

    This assumes that there is enough vertical separation between the "a" and "b" elements to be able to connect them with a single jog only and not short all the connections with one another.  Put in your own appropriate parameters, I just threw this together as a proof of concept, and in my simple test case it worked.

    I hope that this helps you.

    Regards,

    Lawrence

Reply

  • Hi Yichun,

    If you need to connect each "a" to each "b" in turn, then you could create a path for each pair as Tongju suggested, and this is perhaps the best approach, within some kind of "for" loop.  I would not have thought that you would be able to have a connection cell however, since the horizontal distance between "a" and "b" varies.  There are not enough details in your post to know how large each "a" and "b" rectangle are, or their vertical separation, so any code would have to be a guess, but perhaps something like the following:


    astep = 0.5
    bstep = 1.0
    maxy = ??
    miny = ??
    width = 0.2
    sep = 2 * width

    for(i 0 <maxNumOfRects>
      dbCreatePath(geGetEditCellView() "metal1"
        list(astep*i:maxy  astep*i:miny+(sep*i)
          bstep*i:miny+(sep*i)  bstep*i:miny)
        width
      )
    )

    This assumes that there is enough vertical separation between the "a" and "b" elements to be able to connect them with a single jog only and not short all the connections with one another.  Put in your own appropriate parameters, I just threw this together as a proof of concept, and in my simple test case it worked.

    I hope that this helps you.

    Regards,

    Lawrence

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