Very nice!<p>I have spend the last hour trying to display the Poincaré disk[1], but to no avail.<p>I have z * (cos(1.57 * (a^2+b^2+1)^(1&#x2F;2))&#x2F;sin(1.57 * (a^2+b^2+1)^(1&#x2F;2))), which project the coordinates to the infinite on a circle. But this is only a fancy zoom, straight lines are not projected to circles.<p>[1]<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Poincar%C3%A9_disk_model" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Poincar%C3%A9_disk_model</a><p>Edit: Wrong thread