Fix a bug in project()

[nt3d] / torus_by_extrude.html

diff --git a/torus_by_extrude.html b/torus_by_extrude.html
index 4655519cecec47c5551f511a4d10db268536f106..10ae92e50c7bdaaa3f1c3ab0ecd9d570c8c394d3 100644 (file)
--- a/torus_by_extrude.html
+++ b/torus_by_extrude.html
@@ -3,8 +3,9 @@
     <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) {
+      function torus_by_extrude(torus_radius, cross_section_radius, rotation, long_steps, short_steps) {
        var path = nt3d.circle(torus_radius, long_steps);
+       path = nt3d.rotate_about_origin(path, [0,1,0], rotation * 2*Math.PI);
        return nt3d.closed_extrude(
          path,
          nt3d.circle(cross_section_radius, short_steps),
@@ -13,6 +14,7 @@
       }
       var params = [["Torus radus", 100],
                     ["Cross section radius", 40],
+                    ["Rotation (turns)", 0.001],
                     ["Steps around the long way", 50],
                     ["Steps around the short way", 16]];
     </script>