[nt3d] / torus_by_extrude.html

<html>
  <head>
    <title>Torus by extrude</title>
    <script type="text/javascript" src="nt3d.js"></script>
    <script type="text/javascript">
      function torus_by_extrude(torus_radius, cross_section_radius, long_steps, short_steps) {
      	var cross_section = nt3d.circle(cross_section_radius, short_steps);
      	var path = nt3d.circle(torus_radius, long_steps);
      	var cross_section_normals = nt3d.rotate_about_origin(path, [0,0,1], Math.PI/2);
      	var path_normals = [];
      	path_normals.length = long_steps;
      	for (var i = 0; i < long_steps; i++) {
      		path_normals[i] = [0, 0, 1];
      	}
      	return nt3d.closed_extrude(cross_section, path, cross_section_normals, path_normals);
      }
      var params = [["Torus radus", 100],
                    ["Cross section radius", 40],
                    ["Steps around the long way", 50],
                    ["Steps around the short way", 16]];
    </script>
  </head>
  <body onload="nt3d.framework(torus_by_extrude, params)">
    <h1>Torus by extrude</h1>
    <p>Make a torus by extruding a circle.</p>
  </body>
</html>
Commit	Line	Data
fc382d22 SW	1	<html>
	2	<head>
	3	<title>Torus by extrude</title>
	4	<script type="text/javascript" src="nt3d.js"></script>
	5	<script type="text/javascript">
	6	function torus_by_extrude(torus_radius, cross_section_radius, long_steps, short_steps) {
	7	var cross_section = nt3d.circle(cross_section_radius, short_steps);
	8	var path = nt3d.circle(torus_radius, long_steps);
	9	var cross_section_normals = nt3d.rotate_about_origin(path, [0,0,1], Math.PI/2);
	10	var path_normals = [];
	11	path_normals.length = long_steps;
	12	for (var i = 0; i < long_steps; i++) {
	13	path_normals[i] = [0, 0, 1];
	14	}
	15	return nt3d.closed_extrude(cross_section, path, cross_section_normals, path_normals);
	16	}
	17	var params = [["Torus radus", 100],
	18	["Cross section radius", 40],
	19	["Steps around the long way", 50],
	20	["Steps around the short way", 16]];
	21	</script>
	22	</head>
	23	<body onload="nt3d.framework(torus_by_extrude, params)">
	24	<h1>Torus by extrude</h1>
	25	<p>Make a torus by extruding a circle.</p>
	26	</body>
	27	</html>