git.scottworley.com Git - nt3d/blame_incremental

Commit	Line	Data
	1	<html>
	2	<head>
	3	<title>Serrated</title>
	4	<script type="text/javascript" src="nt3d.js"></script>
	5	<script type="text/javascript">
	6	function serrated(length, thickness, depth, serration_count, arc, steps_per_serration, edge_bevel_angle) {
	7	var tau = 2 * Math.PI;
	8	var path_length = serration_count * steps_per_serration;
	9	var path = [];
	10	for (var i = 0; i <= path_length; i++) {
	11	path[i] = [length*i/path_length,0,0];
	12	}
	13	var serration_length = length / serration_count;
	14	var serration_half_length = serration_length / 2;
	15	var serration_radius = serration_half_length / Math.sin(tau * arc / 2);
	16	var serration_max_height = Math.sqrt(serration_radiusserration_radius - serration_half_lengthserration_half_length);
	17	// This emits a Sabre Grind. TODO: Support a double bevel.
	18	// http://en.wikipedia.org/wiki/Grind#Typical_grinds
	19	// http://www.allaboutpocketknives.com/images/aapk_content/blade_bevel.JPG
	20	var edge_height = thickness / (2 * Math.tan(tau * edge_bevel_angle));
	21	function shape(i) {
	22	var serration_progress = (i % steps_per_serration) / steps_per_serration;
	23	var serration_x = serration_progress * serration_length - serration_half_length;
	24	var serration_height = serration_max_height - Math.sqrt(serration_radiusserration_radius - serration_xserration_x);
	25	if (arc < 0) serration_height *= -1;
	26	var blade_height = depth + serration_height;
	27	return [[0, 0, 0],
	28	[blade_height - edge_height, 0, 0],
	29	[blade_height, thickness/2, 0],
	30	[blade_height - edge_height, thickness, 0],
	31	[0, thickness, 0]];
	32	}
	33	return nt3d.extrude(path, shape, [1,0,0], [0,0,1]);
	34	}
	35	var params = [["Blade length", 100],
	36	["Blade thickness", 2],
	37	["Blade depth", 8],
	38	["Number of serrations", 10],
	39	["Arc of each serration (in turns)", .2],
	40	["Steps per serration", 11],
	41	["Edge bevel angle (in turns)", .05]];
	42	</script>
	43	</head>
	44	<body onload="nt3d.framework(serrated, params)">
	45	<h1>Serrated</h1>
	46	<p>Make a serrated blade.</p>
	47	</body>
	48	</html>

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<html>

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<head>

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<title>Serrated</title>

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function serrated(length, thickness, depth, serration_count, arc, steps_per_serration, edge_bevel_angle) {

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var tau = 2 * Math.PI;