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35 lines
634 B
OpenSCAD
35 lines
634 B
OpenSCAD
use <shape_circle.scad>
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use <ptf/ptf_rotate.scad>
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use <sweep.scad>
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r1 = 0.1;
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r2 = 50;
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a1 = 1;
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a2 = 450;
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steps = 40;
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$fn = 48;
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module simple_seashell(r1, r2, a1, a2, steps) {
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rd = (r2 - r1) / steps;
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ad = (a2 - a1) / steps;
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sections = [
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for (i = [0:steps])
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let(
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r = r1 + rd * i,
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a = a1 + i * ad
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)
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[
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for(p = concat(shape_circle(r), shape_circle(r * 0.9)))
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ptf_rotate([p[0], p[1], 0] + [r, 0, 0], [0, a, 0])
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]
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];
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rotate([90, 0, 0]) sweep(sections, "HOLLOW");
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}
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simple_seashell(r1, r2, a1, a2, steps); |