git.scottworley.com Git - nt3d/blob - medusa.html

   1 <html>
   2   <head>
   3     <title>Medusa</title>
   4     <script type="text/javascript" src="nt3d.js"></script>
   5     <script type="text/javascript">
   6       function finger(params, finger_crosssection, ring_radius, finger_angle) {
   7         var path = [];
   8         for (var finger_point = 0; finger_point <= params.finger_points; finger_point++) {
   9           var angle = (finger_angle + params.finger_twirl * finger_point / params.finger_points) * 2 * Math.PI;
  10           var x = ring_radius * Math.cos(angle);
  11           var y = ring_radius * Math.sin(angle);
  12           path.push([x, y, params.finger_height * finger_point / params.finger_points]);
  13         }
  14         return nt3d.extrude(path, finger_crosssection, [0, 0, 1], nt3d.pathnormals_from_point(path, [0, 0, 0]));
  15       }
  16       function medusa(params) {
  17         var finger_crosssection = nt3d.circle(params.finger_radius, params.finger_faces);
  18         var fingers = [];
  19         for (var ring_num = 0; ring_num < params.num_rings; ring_num++) {
  20           var ring_radius = params.first_ring_radius + ring_num * params.ring_spacing;
  21           var num_fingers = Math.round((ring_radius * 2 * Math.PI) / params.finger_spacing);
  22           for (var finger_num = 0; finger_num < num_fingers; finger_num++) {
  23             var finger_angle = finger_num / num_fingers;
  24             fingers = fingers.concat(finger(params, finger_crosssection, ring_radius, finger_angle));
  25           }
  26         }
  27
  28         return fingers;
  29       }
  30       var params = [["first_ring_radius", 20],
  31                     ["num_rings", 4],
  32                     ["ring_spacing", 10, "Space Between Rings"],
  33                     ["finger_spacing", 10],
  34                     ["finger_radius", 3],
  35                     ["finger_faces", 3],
  36                     ["finger_points", 20],
  37                     ["finger_twirl", .1, "Finger Twirl (in turns)"],
  38                     ["finger_height", 100]];
  39     </script>
  40   </head>
  41   <body onload="nt3d.framework(medusa, params)">
  42     <h1>Medusa</h1>
  43     <p>An artsy thing.</p>
  44   </body>
  45 </html>