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Script for finding same Metal type Shape Overlapping a Trace

RFStuff

Dear All,

I want to find whether same metal type shape  is overlapping another shape of the same metal.

If it is overlapping, then the overlap area should blink.

Basically this I need for finding SHORT with undesired trace.

For example: I have a trace ( may be a Rectangle/Path). I select this. Then an enabled SKILL script should find a same metal type shape overlapping with the trace and highligting the overlapped area with the trace.

Can anybody show me some light  for this.

Kind Regards,

Parents
  • Andrew Beckett

    A picture might help, but I suspect that the problem is that the dbGetTrueOverlaps is finding all the objects which interact with the bounding box of obj1. See the attached picture. In this case, the selected object is obj1, and I get:

    (db:0x17511f12
        (db:0x17511f92 db:0x17512292)
        (db:0x17511f92 db:0x17512293)
    )

    The top right path iteracts with the bounding box of the first shape - that's correct. If the path had moved a little to the right so that it didn't interact with the bBox of the fat path, then dbGetTrueOverlaps wouldn't return it - however, dbGetOverlaps (in IC5141) would still return it if the bBox of the lower shape interacts with the bBox of the selected shape. That's what the difference between the two functions (in IC61 dbGetOverlaps always returns the "true" overlaps).

    That's why you need to do the dbLayerAnd as well. Here's what I did to do that:

    overlaps=dbGetTrueOverlaps(cv obj1~>bBox obj1~>layer 0:5)
    shapeList=nil
    foreach(overlap overlaps
      unless(overlap==obj1
        shapeList=cons(dbCopyFig(abGetOverlapShape(overlap) cv abGetOverlapTransform(overlap)) shapeList)
      )
    )
    interactingRegions=dbLayerAnd(cv "y0" list(obj1) shapeList)
    foreach(shape shapeList
      dbDeleteObject(shape)
    )
    ; if a shape on y0 isn't enough, you can convert to markers
    foreach(shape interactingRegions
      if(shape~>objType=="polygon" then
        geCreateMarkerByBBox(cv "warning" "SHORT" "shorting shape" "some reason" shape~>points)
      else
        geCreateMarkerByBBox(cv "warning" "SHORT" "shorting shape" "some reason" shape~>bBox)
      )
      dbDeleteObject(shape)
    )

    Regards,

    Andrew.

Reply
  • Andrew Beckett

    A picture might help, but I suspect that the problem is that the dbGetTrueOverlaps is finding all the objects which interact with the bounding box of obj1. See the attached picture. In this case, the selected object is obj1, and I get:

    (db:0x17511f12
        (db:0x17511f92 db:0x17512292)
        (db:0x17511f92 db:0x17512293)
    )

    The top right path iteracts with the bounding box of the first shape - that's correct. If the path had moved a little to the right so that it didn't interact with the bBox of the fat path, then dbGetTrueOverlaps wouldn't return it - however, dbGetOverlaps (in IC5141) would still return it if the bBox of the lower shape interacts with the bBox of the selected shape. That's what the difference between the two functions (in IC61 dbGetOverlaps always returns the "true" overlaps).

    That's why you need to do the dbLayerAnd as well. Here's what I did to do that:

    overlaps=dbGetTrueOverlaps(cv obj1~>bBox obj1~>layer 0:5)
    shapeList=nil
    foreach(overlap overlaps
      unless(overlap==obj1
        shapeList=cons(dbCopyFig(abGetOverlapShape(overlap) cv abGetOverlapTransform(overlap)) shapeList)
      )
    )
    interactingRegions=dbLayerAnd(cv "y0" list(obj1) shapeList)
    foreach(shape shapeList
      dbDeleteObject(shape)
    )
    ; if a shape on y0 isn't enough, you can convert to markers
    foreach(shape interactingRegions
      if(shape~>objType=="polygon" then
        geCreateMarkerByBBox(cv "warning" "SHORT" "shorting shape" "some reason" shape~>points)
      else
        geCreateMarkerByBBox(cv "warning" "SHORT" "shorting shape" "some reason" shape~>bBox)
      )
      dbDeleteObject(shape)
    )

    Regards,

    Andrew.

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