Nautilus Spiral: A bit complicated lazarus / 39-Graphics ---------------------------------------------------------------------- Boleeman · 2025-04-15 06:15 I made a Nautilus Spiral in Lazarus Used a bgrabmp for the rendering. Not sure exactly why but there is a part in the code I had to "trial and error" to get the expected curve. Code: Pascal  [Select][+][-]window.onload = function(){var x1 = document.getElementById("main_content_section"); if (x1) { var x = document.getElementsByClassName("geshi");for (var i = 0; i     if (i <= 12) or ((i >= 29) and (i <= 44)) then      perp := PointF(perp.X, perp.Y);     arcCenter := PointF(      midPt.X + perp.X * hh,      midPt.Y + perp.Y * hh    ); Would be nice to make a 3D version, but not really sure how to go about it. Found a JavaScript 3D version that looks good. Enjoy.