No, have never seen it AFAI[K/R]. But something interesting happened to me.

I did not notice it was a star, a circle and a triangle on first sight; not until I read your description. The start kind of stands out, but the other two were completely lost on me. What I saw was kind of a labyrinth, with 90° angles and everything. Not sure if that means anything to you, or if it was just a curious quirk of my mind.