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leIsPointInsideFig Bug?

Adrian Nistor

Hi, 

I have a specific strange situation, and I do not know how to handle it. I'm using Virtuoso 6.1.4.To replicate this you can do the following in for new layout cell view:

in CIW:

 pts = list(
    list(0.0 19.2)
    list(0.0 0.0)
    list(53.25 0.0)
    list(53.25 97.7)
    list(39.25 97.7)
)

obj = dbCreatePolygon(cv() "poly" pts) ;; Create a polygon



bx = list(list(17.4 19.2)
    list(21.2 23.45)
)
r = dbCreateRect(cv() "metal1" bx) ;; Create a small rect, this is only for visual help
lowerLeftPt = lowerLeft(r~>bBox) ;; Take the lower left point of the polygon

leIsPointInsideFig(obj lowerLeftPt) ;; ~> this will return nil !! WHY ?

No move the small rect "one grid" in top or bottom direction and retry the leIsPointInsideFi, it will return t. 

Only on that horizontal line the problem appears.

 

Is this a bug?

 

Thank you,

Best Regards,

Adrian

 

Parents

  • Hi Adrian,

    This looks like  a bug to me. Please file a service request. It seems to be an issue if the shape is concident with a line drawn from one of the vertices. I believe it uses some kind of scan line approach, and something is probably wrong in the code.

    As a workaround, you could use the SKILL code in Solution 11024326 . In this there is CCSpointInPolygon, and you could use CCSpointInPolygon(lowerLeftPt obj~>points) (strictly you should check using CCSpointOnBoundary() too  - see comments in the code).

    Regards,

    Andrew.

Reply

  • Hi Adrian,

    This looks like  a bug to me. Please file a service request. It seems to be an issue if the shape is concident with a line drawn from one of the vertices. I believe it uses some kind of scan line approach, and something is probably wrong in the code.

    As a workaround, you could use the SKILL code in Solution 11024326 . In this there is CCSpointInPolygon, and you could use CCSpointInPolygon(lowerLeftPt obj~>points) (strictly you should check using CCSpointOnBoundary() too  - see comments in the code).

    Regards,

    Andrew.

Children
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