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update example

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Justin Lin
2022-03-14 17:12:04 +08:00
parent 7cfc2f21dd
commit d2ad4ff388
1 changed files with 55 additions and 31 deletions
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86
examples/turtle/tree.scad
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@@ -1,38 +1,62 @@
use <line3d.scad>;
use <polyline_join.scad>;
use <turtle/t3d.scad>;
use <util/rand.scad>;
module tree(t, leng, leng_scale1, leng_scale2, leng_limit,
angleZ, angleX, diameter) {
if(leng > leng_limit) {
t2 = t3d(t, "xforward", leng = leng);
trunk_leng = 50;
branch_scale = 0.7;
branch_angle = 30;
width = 2;
$fn = 4;
line3d(
t3d(t, "point"), t3d(t2, "point"),
diameter);
tree(
t3d(t2, "zturn", angle = angleZ),
leng * leng_scale1, leng_scale1, leng_scale2, leng_limit,
angleZ, angleX,
diameter);
tree(
t3d(t2, "xturn", angle = angleX),
leng * leng_scale2, leng_scale1, leng_scale2, leng_limit,
angleZ, angleX,
diameter);
}
module line(t1, t2, start_width, end_width) {
polyline_join([t3d(t1, "point"), t3d(t2, "point")]) {
sphere(start_width / 2);
sphere(end_width / 2);
}
}
leng = 20;
leng_limit = 1;
leng_scale1 = 0.4;
leng_scale2 = 0.9;
angleZ = 60;
angleX = 135;
diameter = 2;
module shoot(t, trunk_leng, branch_scale, branch_angle, width) {
t2 = t3d(t, "forward", leng = trunk_leng);
line(t, t2, width, width);
t = t3d(point = [0, 0, 0]);
branch_leng = trunk_leng * branch_scale;
color("green") {
t3 = t3d(t2, "turn", angle = branch_angle);
line(
t2,
t3d(t3, "forward", leng = branch_leng),
width,
width * rand(1, 3)
);
tree(t, leng, leng_scale1, leng_scale2, leng_limit,
angleZ, angleX, diameter);
t4 = t3d(t2, "turn", angle = -branch_angle);
line(
t2,
t3d(t4, "forward", leng = branch_leng),
width,
width * rand(1, 3)
);
}
}
module tree(t, trunk_leng, branch_scale, branch_angle, width) {
if(trunk_leng > width * 2) {
t2 = t3d(t, "forward", leng = trunk_leng * rand(0.6, 1));
line(t, t2, trunk_leng / 3, trunk_leng / 3 * branch_scale);
rolled = t3d(t2, "roll", angle = 120 * rand(0.6, 1));
branch_leng = trunk_leng * branch_scale;
t3 = t3d(rolled, "turn", angle = branch_angle * rand(0.6, 1));
tree(t3, branch_leng, branch_scale, branch_angle, width);
t4 = t3d(rolled, "turn", angle = -branch_angle * rand(0.6, 1));
tree(t4, branch_leng, branch_scale, branch_angle, width);
}
else {
shoot(t, trunk_leng, branch_scale, branch_angle, width);
}
}
tree(t3d(), trunk_leng, branch_scale, branch_angle, width);