Staggered circle shape array in a circular ring range

It's difficult to understand your question. Maybe post an image.

Hi Dave,

    Thank you very much for your quickly reply. My question is the following picture.

    I want to add many circle shape on one layer in the range of donuts. These circle shape is 7 mil radius, center to center is 22 mil. The donut's inner diameter & outside diameter is R1 & R2. I can add these circle as an staggered array, but how to delete the circle shape lies in R1 & outside R2? The bBox area only operate for rectangle as I known. For the pin 1~8, because they are small area, I can treat them as small rectangle. Delete the circle shape in the small area. I don't know if my expression is clear, but if do you have any method or sample code for me? Please help me, thanks a lot.

Regards,

Jason

Ok. Now it makes sense.

Create two polygons:

1/ with the inside diameter (R1) plus 7mils (using axlPolyExpand if necessary)

2/ with the outside diameter (R2) less 7mils (using axlPolyExpand if necessary)

Now use axlGeoPointInShape using the centre of each array circle to see if each circle is inside R2 and outside R1.

You could also use axlPolyOperation commands but this would be much slower.

I hope this helps.

Of course it would be even easier to do this mathematically. Given that you know the donut's dimensions, a circle will fall fully inside the donut if its distance from the centre of the donut is between R1 - 7 and R2 + 7

Thank you, Dave. I will try it later. I always can learn many ting from you. Thanks again.