dotSCAD/docs/lib3x-hull_polyline3d.md

hull_polyline3d

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.

Parameters

• points : The list of [x, y, z] points of the polyline. The points are indexed from 0 to n-1.
• diameter : The line diameter. Default to 1.
• $fa, $fs, $fn : Check the sphere module for more details.

Examples

use <hull_polyline3d.scad>;

hull_polyline3d(
    points = [
        [1, 2, 3], 
        [4, -5, -6], 
        [-1, -3, -5], 
        [0, 0, 0]
    ], 
    diameter = 1, 
    $fn = 3
);

use <hull_polyline3d.scad>;

r = 50;
points = [
    for(a = [0:180]) 
        [
           r * cos(-90 + a) * cos(a), 
           r * cos(-90 + a) * sin(a), 
           r * sin(-90 + a)
        ]
];

for(i = [0:7]) {
    rotate(45 * i) 
        hull_polyline3d(points, 2, $fn = 3);
}