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overlapping polygon checking command in encounter

vicky

 I would like to know is there a command that checked for polygon overlap. I need to check the overlap of a instance box with a power domain which is non rectangular in shape. I am trying to use this command "dbIsBoxOverlappingBox" which does not always give me the overlap correctly.

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  • Bob,

    Thanks for the replay.But  I did not understand completely. Below is the commands  I have written to check for the overlap of an instance with a power domain.

    But if the power domain is rectilinear I am not able to get the overlap in all the scenarios  only in some cases it works correctly.

    Can you please suggest what is the necessary changes I need to do

    set box($name) [uu2dbu -unit [dbDBUToMicrons 1] [getObjFPlanBoxList Group $name]] à To store the polygon of the power domain

    set instBox [dbInstBox $elem]à To store the box of the instance

    dbIsBoxOverlappingBox $box($pd) $instBox à To check for the box overlap

    Please let me know how to convert the value stored for the power domain into set of boxes

    Regards

    Vicky
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  • Bob,

    Thanks for the replay.But  I did not understand completely. Below is the commands  I have written to check for the overlap of an instance with a power domain.

    But if the power domain is rectilinear I am not able to get the overlap in all the scenarios  only in some cases it works correctly.

    Can you please suggest what is the necessary changes I need to do

    set box($name) [uu2dbu -unit [dbDBUToMicrons 1] [getObjFPlanBoxList Group $name]] à To store the polygon of the power domain

    set instBox [dbInstBox $elem]à To store the box of the instance

    dbIsBoxOverlappingBox $box($pd) $instBox à To check for the box overlap

    Please let me know how to convert the value stored for the power domain into set of boxes

    Regards

    Vicky
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