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1.3 KiB
1.3 KiB
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. There're 8 spirals on the sphere.
(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 <hull_polyline3d.scad>;
n = 200;
radius = 20;
pts = fibonacci_lattice(n, radius);
for(p = pts) {
translate(p)
sphere(1);
}
sphere(radius);
spirals = [for(j = [0:7])
[for(i = j; i < len(pts); i = i + 8) pts[i]]
];
for(spiral = spirals) {
hull_polyline3d(spiral, 1);
}