projects / nt3d / blame
| Commit | Line | Data |
|---|---|---|
| 00406c26 SW |
1 | <html> |
| 2 | <head> | |
| 3 | <title>Medusa</title> | |
| 4 | <script type="text/javascript" src="nt3d.js"></script> | |
| 5 | <script type="text/javascript"> | |
| b62906a2 | 6 | function finger(params, finger_crosssection, ring_num, ring_radius, finger_angle) { |
| 9c6ce9fa | 7 | var path = []; |
| b62906a2 SW |
8 | var twirl_amplitute = Math.cos((ring_num * 2 * Math.PI) / params.finger_twirl_period); |
| 9 | var twirl_angle = twirl_amplitute * params.finger_twirl_distance / (ring_radius * 2 * Math.PI); | |
| cf4bf59f | 10 | var widen_scale = params.widen_amount / (Math.exp(params.widen_sharpness) - 1); |
| 9c6ce9fa | 11 | for (var finger_point = 0; finger_point <= params.finger_points; finger_point++) { |
| 3fdffa6c SW |
12 | var finger_progress = finger_point / params.finger_points; |
| 13 | var angle = (finger_angle + twirl_angle * finger_progress) * 2 * Math.PI; | |
| cf4bf59f | 14 | var r = ring_radius + widen_scale * Math.exp(finger_progress * params.widen_sharpness); |
| e06a4a20 SW |
15 | var x = r * Math.cos(angle); |
| 16 | var y = r * Math.sin(angle); | |
| 6814d9fe SW |
17 | var z = params.finger_height * finger_progress; |
| 18 | path.push([x, y, z]); | |
| 9c6ce9fa SW |
19 | } |
| 20 | return nt3d.extrude(path, finger_crosssection, [0, 0, 1], nt3d.pathnormals_from_point(path, [0, 0, 0])); | |
| 21 | } | |
| 3bafa9bd SW |
22 | function medusa(params) { |
| 23 | var finger_crosssection = nt3d.circle(params.finger_radius, params.finger_faces); | |
| 00406c26 | 24 | var fingers = []; |
| 3bafa9bd SW |
25 | for (var ring_num = 0; ring_num < params.num_rings; ring_num++) { |
| 26 | var ring_radius = params.first_ring_radius + ring_num * params.ring_spacing; | |
| bdd7bcc0 SW |
27 | var num_fingers = Math.round((ring_radius * 2 * Math.PI) / params.finger_spacing); |
| 28 | for (var finger_num = 0; finger_num < num_fingers; finger_num++) { | |
| 29 | var finger_angle = finger_num / num_fingers; | |
| b62906a2 | 30 | fingers = fingers.concat(finger(params, finger_crosssection, ring_num, ring_radius, finger_angle)); |
| 911d073b | 31 | } |
| 00406c26 SW |
32 | } |
| 33 | ||
| 34 | return fingers; | |
| 35 | } | |
| 3bafa9bd | 36 | var params = [["first_ring_radius", 20], |
| c81e16ac | 37 | ["num_rings", 4], |
| 3bafa9bd | 38 | ["ring_spacing", 10, "Space Between Rings"], |
| bdd7bcc0 | 39 | ["finger_spacing", 10], |
| 3bafa9bd | 40 | ["finger_radius", 3], |
| c81e16ac | 41 | ["finger_faces", 3], |
| 3bafa9bd | 42 | ["finger_points", 20], |
| 34c919e9 | 43 | ["finger_twirl_distance", 50], |
| b62906a2 | 44 | ["finger_twirl_period", 2, "Finger Twirl Period (1=same, 2=alternating)"], |
| cf4bf59f SW |
45 | ["finger_height", 100], |
| 46 | ["widen_sharpness", 2, "Widen Sharpness (0=disable widening)"], | |
| 47 | ["widen_amount", 30]]; | |
| 00406c26 SW |
48 | </script> |
| 49 | </head> | |
| 50 | <body onload="nt3d.framework(medusa, params)"> | |
| 51 | <h1>Medusa</h1> | |
| 52 | <p>An artsy thing.</p> | |
| 53 | </body> | |
| 54 | </html> |