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experimental t2d

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Justin Lin
2019-09-28 18:05:06 +08:00
parent 7488f62df7
commit 4fad8da2fa
2 changed files with 103 additions and 17 deletions
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42
examples/turtle/sierpinski_triangle.scad
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@@ -1,37 +1,45 @@
include <line2d.scad>;
include <polyline2d.scad>;
include <turtle/turtle2d.scad>;
include <turtle/t2d.scad>;
side_len = 100;
min_len = 4;
side_leng = 100;
min_leng = 4;
thickness = 0.5;
sierpinski_triangle(
turtle2d("create", 0, 0, 0),
side_len, min_len, thickness, $fn = 12
t2d(point = [0, 0], angle = 0),
side_leng, min_leng, thickness, $fn = 12
);
module triangle(t, side_leng, thickness) {
t2 = turtle2d("forward", t, side_leng);
t3 = turtle2d("forward", turtle2d("turn", t2, 120), side_leng);
t2 = t2d(t, "forward", leng = side_leng);
t3 = t2d(t2, cmds = [
["turn", 120],
["forward", side_leng]
]);
polyline2d([
turtle2d("pt", t),
turtle2d("pt", t2),
turtle2d("pt", t3),
turtle2d("pt", t)
t2d(t, "point"),
t2d(t2, "point"),
t2d(t3, "point"),
t2d(t, "point")
], thickness, startingStyle = "CAP_ROUND", endingStyle = "CAP_ROUND");
}
module sierpinski_triangle(t, side_len, min_len, thickness) {
triangle(t, side_len, thickness);
module sierpinski_triangle(t, side_leng, min_leng, thickness) {
triangle(t, side_leng, thickness);
if(side_len >= min_len) {
half_len = side_len / 2;
t2 = turtle2d("forward", t, half_len);
t3 = turtle2d("turn", turtle2d("forward", turtle2d("turn", t, 60), half_len), -60);
if(side_leng >= min_leng) {
half_leng = side_leng / 2;
t2 = t2d(t, "forward", leng = half_leng);
t3 = t2d(t, cmds = [
["turn", 60],
["forward", half_leng],
["turn", -60]
]);
for(turtle = [t, t2, t3]) {
sierpinski_triangle(turtle, half_len, min_len, thickness);
sierpinski_triangle(turtle, half_leng, min_leng, thickness);
}
}
}