Hello,
is it possible to invert the circle collider 2D, so objects can move in the collider?
I want to set world boundaries.
And I want to make the boundaries glowing, whats the best way for this?
Make a special sprite for this is a bad solution, because the world boundaries can be very big.
I would use distance joint as mentioned in the API: Unity - Manual: Distance Joint 2D
Please check the date on the posts. This question was asked 8 years ago, and the user hasn’t even been ~2 years. Pretty much anything (questions) over two years old are not useful to reply to (mostly). Unity changes fast, and presumably the op found a solution or has moved on in 8 years. 
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