dotSCAD/docs/lib-golden_spiral.md

golden_spiral

Gets all points and angles on the path of a golden spiral based on Fibonacci numbers. The distance between two points is almost constant.

It returns a vector of [[x, y], angle].

Because of depending on circle_path and rotate_p, remember to include "circle_path.scad" and "rotate_p.scad".

Parameters

• from : The nth Fibonacci number you wanna start from.
• to : The nth Fibonacci number you wanna go to.
• point_distance : Distance between two points on the path.
• rt_dir : "CT_CLK" for counterclockwise. "CLK" for clockwise. The default value is "CT_CLK".

Examples

include <circle_path.scad>;
include <rotate_p.scad>;
include <golden_spiral.scad>;
        
pts_angles = golden_spiral(
    from = 3, 
    to = 10, 
    point_distance = 1
);

for(pt_angle = pts_angles) {
    translate(pt_angle[0]) 
        sphere(0.5);
}

include <circle_path.scad>;
include <rotate_p.scad>;
include <golden_spiral.scad>;
        
pts_angles = golden_spiral(
    from = 5, 
    to = 11, 
    point_distance = 4
);
    
for(pt_angle = pts_angles) {
    translate(pt_angle[0]) 
        rotate([90, 0, pt_angle[1]])
            linear_extrude(1, center = true) 
                text("A", valign = "center", halign = "center");
}