dotSCAD/examples/voronoi/voronoi_fibonacci.scad

use <golden_spiral.scad>
use <ptf/ptf_rotate.scad>
use <hollow_out.scad>
use <voronoi/vrn2_cells_from.scad>

spirals = 2;     // [2:]
line_thickness = .5;
cell_thickness = 2;
cell_top_scale = 0.8;
style = "BLOCK"; // [BLOCK, LINE]

from = 5;
to = 8;
point_distance = 10;

voronoi_fibonacci();

module voronoi_fibonacci() {
    points_angles = golden_spiral(
        from = from, 
        to = to, 
        point_distance = point_distance
    );
    spiral = [for(pa = points_angles) pa[0]];
    
    a_step = 360 / spirals;

    pts = [
        for(a = [0:a_step:360 - a_step])
        each [for(p = spiral) ptf_rotate(p, a)]
    ];
        
    half_line_thicness = line_thickness / 2;
    lst_r = norm(spiral[len(spiral) - 1]) + half_line_thicness;

    cells = vrn2_cells_from(pts);    
    for(i = [0:len(pts) - 1]) {
        cell = cells[i];
        
        if(style == "BLOCK") {
            pt = pts[i];
            color(rands(0, 1, 3))
            translate(pt)    
            linear_extrude(cell_thickness, scale = cell_top_scale)
            translate(-pt)    
            intersection() {
                polygon(cell);
                circle(lst_r);
            }        
        }        
        else {
            linear_extrude(line_thickness) 
            intersection() {
                hollow_out(half_line_thicness) polygon(cell);
                circle(lst_r);
            }   
        }
    }
    
    linear_extrude(line_thickness) {
        if(style == "BLOCK") {
            circle(lst_r);
        }
        else {
            hollow_out(line_thickness) 
                circle(lst_r);
        }    
    }
}