openjscad-aurora-webapp

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// title: Spring
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// author: Eduard Bespalov
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// license: MIT License
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// description: testing solidFromSlices()
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function main(params) {
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	var sqrt3 = Math.sqrt(3) / 2;
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	var radius = 2;
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	var hex = CSG.Polygon.createFromPoints([
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			[radius, 0, 0],
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			[radius / 2, radius * sqrt3, 0],
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			[-radius / 2, radius * sqrt3, 0],
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			[-radius, 0, 0],
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			[-radius / 2, -radius * sqrt3, 0],
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			[radius / 2, -radius * sqrt3, 0]
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	]);
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	var angle = 10, //generate slice every 10 deg
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		springRadius = 10,
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		loops = 5,
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		loopGap = radius * 2 * sqrt3 + 2;//spring thick and gap
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	return hex.solidFromSlices({
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		numslices: 360 * loops / angle,
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		callback: function(t, slice) {
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			return this.translate([loopGap * loops * t, 0, 0]).rotate(
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						[0,springRadius,0],
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						[-1, 0, 0],
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						angle * slice
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					);
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		}
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	});
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}
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