BOSL2/examples/randomized_fractal_tree.scad
2021-05-10 23:26:35 -07:00

46 lines
1.1 KiB
OpenSCAD

include <BOSL2/std.scad>
include <BOSL2/paths.scad>
include <BOSL2/beziers.scad>
module leaf(s) {
path = [
[0,0], [1.5,-1],
[2,1], [0,3], [-2,1],
[-1.5,-1], [0,0]
];
xrot(90)
linear_extrude(height=0.02)
bezier_polygon(path*s/2);
}
module branches(minsize, s1, s2){
if(s2>minsize) {
attach(TOP)
zrot(gaussian_rands(90,20)[0])
zrot_copies(n=floor(log_rands(2,5,4)[0]))
zrot(gaussian_rands(0,5)[0])
yrot(gaussian_rands(30,10)[0]) {
sc = gaussian_rands(0.7,0.05)[0];
cylinder(d1=s2, d2=s2*sc, l=s1)
branches(minsize, s1*sc, s2*sc);
}
} else {
recolor("springgreen")
attach(TOP) zrot(90)
leaf(gaussian_rands(100,5)[0]);
}
}
module tree(h, d, minsize) {
sc = gaussian_rands(0.7,0.05)[0];
recolor("lightgray") {
cylinder(d1=d, d2=d*sc, l=h) {
branches(minsize, h, d*sc);
}
}
}
tree(d=300, h=1500, minsize=10);
// vim: expandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap