git.scottworley.com Git - nt3d/blame_incremental

Commit	Line	Data
	1	<html>
	2	<head>
	3	<title>Medusa</title>
	4	<script type="text/javascript" src="nt3d.js"></script>
	5	<script type="text/javascript">
	6	function finger(params, finger_crosssection, ring_num, ring_radius, finger_angle) {
	7	var path = [];
	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);
	10	var widen_scale = params.widen_amount / (Math.exp(params.widen_sharpness) - 1);
	11	for (var finger_point = 0; finger_point <= params.finger_points; finger_point++) {
	12	var finger_progress = finger_point / params.finger_points;
	13	var angle = (finger_angle + twirl_angle * finger_progress) * 2 * Math.PI;
	14	var r = ring_radius + widen_scale * Math.exp(finger_progress * params.widen_sharpness);
	15	var x = r * Math.cos(angle);
	16	var y = r * Math.sin(angle);
	17	var z = params.finger_height * finger_progress;
	18	path.push([x, y, z]);
	19	}
	20	return nt3d.extrude(path, finger_crosssection, [0, 0, 1], nt3d.pathnormals_from_point(path, [0, 0, 0]));
	21	}
	22	function medusa(params) {
	23	var finger_crosssection = nt3d.circle(params.finger_radius, params.finger_faces);
	24	var fingers = [];
	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;
	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;
	30	fingers = fingers.concat(finger(params, finger_crosssection, ring_num, ring_radius, finger_angle));
	31	}
	32	}
	33
	34	return fingers;
	35	}
	36	var params = [["first_ring_radius", 20],
	37	["num_rings", 4],
	38	["ring_spacing", 10, "Space Between Rings"],
	39	["finger_spacing", 10],
	40	["finger_radius", 3],
	41	["finger_faces", 3],
	42	["finger_points", 20],
	43	["finger_twirl_distance", 50],
	44	["finger_twirl_period", 2, "Finger Twirl Period (1=same, 2=alternating)"],
	45	["finger_height", 100],
	46	["widen_sharpness", 2, "Widen Sharpness (0=disable widening)"],
	47	["widen_amount", 30]];
	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>

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<html>

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<head>

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<title>Medusa</title>

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function finger(params, finger_crosssection, ring_num, ring_radius, finger_angle) {

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var path = [];