projects / nt3d / blame
| Commit | Line | Data |
|---|---|---|
| 1e62819c SW |
1 | <html> |
| 2 | <head> | |
| 3 | <title>Box by rotation</title> | |
| 4 | <script type="text/javascript" src="nt3d.js"></script> | |
| 5 | <script type="text/javascript"> | |
| 6 | function box_by_rotation(size_as_string) { | |
| 7 | var size = parseFloat(size_as_string); | |
| 8 | var origin = [0, 0, 0 ]; | |
| 9 | var x = [size, 0, 0 ]; | |
| 10 | var y = [0, size, 0 ]; | |
| 11 | var xy = [size, size, 0 ]; | |
| 12 | var xy_face = nt3d.quad(origin, y, xy, x); | |
| 13 | return [].concat( | |
| 14 | xy_face, | |
| 15 | nt3d.rotate_about_origin(xy_face, nt3d.unit([1,1,1]), 2*Math.PI/3), // yz | |
| 16 | nt3d.rotate_about_origin(xy_face, nt3d.unit([1,1,1]), -2*Math.PI/3), // xz | |
| 17 | nt3d.rotate(xy_face, [0.5, 0, 0.5], [0, 1, 0], Math.PI), // far xy (top) | |
| 18 | nt3d.rotate(xy_face, [1, 1, 0], nt3d.unit([-1, -1, 1]), 2*Math.PI/3), // far yz | |
| 19 | nt3d.rotate(xy_face, [1, 1, 0], nt3d.unit([-1, -1, 1]), -2*Math.PI/3)); // far xz | |
| 20 | } | |
| 21 | var params = [["Size", 1]]; | |
| 22 | </script> | |
| 23 | </head> | |
| 24 | <body onload="nt3d.framework(box_by_rotation, params)"> | |
| 25 | <h1>Box by rotation</h1> | |
| 26 | <p>Make a box by specifying one face, then copy-rotating it five times.</p> | |
| 27 | </body> | |
| 28 | </html> |