Penrose Triangle

Something for a friend. A Penrose triangle, but with a circular counter and rounded corners. I wanted to keep the opening a perfect circle, and give the triangle flat edges, but still have organic curves for each segment. Easier said then done. It means the rounded corners of the triangle aren't perfectly circular, as the curve coming from the central circle has to ease out from the smaller radius to the larger one, and then flatten out to a straight line.