dotSCAD/docs/lib3x-fibonacci_lattice.md

fibonacci_lattice

Creates visually even spacing of n points on the surface of the sphere. Nearest-neighbor points will all be approximately the same distance apart.

(It's called "visually even spacing" because only the vertices of the 5 Platonic solids can be said to be truly evenly spaced around the surface of a sphere.)

Since: 2.5

Parameters

• n : The number of points.
• radius : The sphere radius. Default to 1.
• rt_dir : "CT_CLK" for counterclockwise. "CLK" for clockwise. The default value is "CT_CLK".

Examples

use <fibonacci_lattice.scad>

n = 200;
radius = 20;
pts = fibonacci_lattice(n, radius);

for(p = pts) {
    translate(p)
        sphere(1);
}
    
sphere(radius);

use <fibonacci_lattice.scad>
use <polyline_join.scad>

n = 200;
radius = 20;
pts = fibonacci_lattice(n, radius);

for(p = pts) {
    translate(p)
        sphere(1);
}

sphere(radius * 0.9);

// You can pick spirals from points.
spirals = [for(j = [0:20]) 
    [for(i = j; i < len(pts); i = i + 21) pts[i]]
];


for(spiral = spirals) {
    polyline_join(spiral)
        sphere(.25); 
}