| | 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> |
projects / nt3d / blame_incremental