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46 lines
1.2 KiB
Markdown
46 lines
1.2 KiB
Markdown
# hull_polyline3d
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Creates a 3D polyline from a list of `[x, y, z]` coordinates. As the name says, it uses the built-in hull operation for each pair of points (created by the `sphere` module). It's slow. However, it can be used to create metallic effects for a small `$fn`, large `$fa` or `$fs`.
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## Parameters
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- `points` : The list of `[x, y, z]` points of the polyline. The points are indexed from 0 to n-1.
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- `thickness` : The line thickness.
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- `$fa`, `$fs`, `$fn` : Check [the sphere module](https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Primitive_Solids#sphere) for more details.
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## Examples
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use <hull_polyline3d.scad>;
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hull_polyline3d(
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points = [
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[1, 2, 3],
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[4, -5, -6],
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[-1, -3, -5],
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[0, 0, 0]
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],
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thickness = 1,
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$fn = 3
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);
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use <hull_polyline3d.scad>;
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r = 50;
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points = [
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for(a = [0:180])
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[
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r * cos(-90 + a) * cos(a),
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r * cos(-90 + a) * sin(a),
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r * sin(-90 + a)
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]
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];
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for(i = [0:7]) {
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rotate(45 * i)
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hull_polyline3d(points, 2, $fn = 3);
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}
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