var path = [];
var twirl_amplitute = Math.cos((ring_num * 2 * Math.PI) / params.finger_twirl_period);
var twirl_angle = twirl_amplitute * params.finger_twirl_distance / (ring_radius * 2 * Math.PI);
+ var widen_scale = params.widen_amount / (Math.exp(params.widen_sharpness) - 1);
for (var finger_point = 0; finger_point <= params.finger_points; finger_point++) {
- var angle = (finger_angle + twirl_angle * finger_point / params.finger_points) * 2 * Math.PI;
- var x = ring_radius * Math.cos(angle);
- var y = ring_radius * Math.sin(angle);
- path.push([x, y, params.finger_height * finger_point / params.finger_points]);
+ var finger_progress = finger_point / params.finger_points;
+ var angle = (finger_angle + twirl_angle * finger_progress) * 2 * Math.PI;
+ var r = ring_radius + widen_scale * Math.exp(finger_progress * params.widen_sharpness);
+ var x = r * Math.cos(angle);
+ var y = r * Math.sin(angle);
+ var z = params.finger_height * finger_progress;
+ path.push([x, y, z]);
}
return nt3d.extrude(path, finger_crosssection, [0, 0, 1], nt3d.pathnormals_from_point(path, [0, 0, 0]));
}
["finger_points", 20],
["finger_twirl_distance", 50],
["finger_twirl_period", 2, "Finger Twirl Period (1=same, 2=alternating)"],
- ["finger_height", 100]];
+ ["finger_height", 100],
+ ["widen_sharpness", 2, "Widen Sharpness (0=disable widening)"],
+ ["widen_amount", 30]];
</script>
</head>
<body onload="nt3d.framework(medusa, params)">
projects / nt3d / blobdiff