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Added initial Fractal Tree demo tutorial. Still need to gen images.

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Revar Desmera
2020-03-22 01:14:26 -07:00
parent b2a2c00604
commit c78eade2f2
4 changed files with 200 additions and 44 deletions
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55
examples/fractal_tree.scad
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@@ -1,48 +1,17 @@
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_sweep_bezier(
scale_points(path, [s,s]/2),
height=0.02
);
}
module branches(minsize, s1, s2){
if(s2>minsize) {
module tree(l=1500, sc=0.7, depth=10)
recolor("lightgray")
cylinder(l=l, d1=l/5, d2=l/5*sc)
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);
if (depth>0)
zrot(90)
zrot_copies(n=2)
yrot(30) tree(depth=depth-1, l=l*sc, sc=sc);
else
recolor("springgreen")
yscale(0.67)
teardrop(d=l*3, l=1, anchor=BOT, spin=90);
tree();
// vim: noexpandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap

48
examples/randomized_fractal_tree.scad Normal file
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@@ -0,0 +1,48 @@
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_sweep_bezier(
scale_points(path, [s,s]/2),
height=0.02
);
}
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: noexpandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap