openjscad-aurora-webapp

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// title: Jar barrel
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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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// Here we define the user editable parameters:
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function getParameterDefinitions() {
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  return [
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    { name: 'diameter', caption: 'Jar diameter:', type: 'float', default: 35 },
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    { name: 'height', caption: 'Jar height:', type: 'float', default: 35 },
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    { name: 'wallThick', caption: 'Jar wall thick:', type: 'float', default: 1 }
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  ];
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}
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function main(params)
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{
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  var radius = params.diameter / 2;
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  var thick = params.wallThick;
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  var height = params.height;
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  var bottomThick = 2 * thick;
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  var jar = hexTwisted(radius, height, 60).subtract(
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    hexTwisted( radius - thick, height - bottomThick, 60)
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    	 //rotate because jar is already rotated on that level
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    	 //otherwise will get holes
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    	.rotateZ(60 * (bottomThick / height))
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    	.translate([0,0,bottomThick]) //make jar bottom
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  );
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  return jar;
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}
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function hexTwisted(radius, height, twistangle) {
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  twistangle = twistangle || 0;
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  var sqrt3 = Math.sqrt(3) / 2;
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  var cag = CAG.fromPoints([
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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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   ]).expand(4, CSG.defaultResolution2D);
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	var flatBottom = CSG.Polygon.createFromPoints(
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		cag.getOutlinePaths()[0].points
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	);
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  var hex = flatBottom.solidFromSlices({
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	numslices: height
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	,callback: function(t) {
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		var coef = (t > 0.5 ? 1 - t : t) + 0.8;
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		var polygon = this.rotateZ(t * twistangle)
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						.translate([0, 0, height * t])
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						.scale([coef, coef, 1]);
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		return polygon;
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    }
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  });
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   return hex;
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}
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