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refactor

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This commit is contained in:
Justin Lin 2019-09-28 09:58:34 +08:00
parent ea401ce009
commit df97574a66
1 changed files with 29 additions and 47 deletions
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76
examples/turtle/sierpinski_triangle.scad
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@ -1,56 +1,38 @@
include <line2d.scad>;
include <polyline2d.scad>;
include <turtle/turtle2d.scad>;
module triangle(t, side_leng, width) {
$fn = 48;
angle = 120;
t_p1 = turtle2d("forward", t, side_leng);
line2d(
turtle2d("pt", t), turtle2d("pt", t_p1),
width, p1Style = "CAP_ROUND", p2Style = "CAP_ROUND"
);
side_len = 100;
min_len = 4;
thickness = 0.5;
t_p2 = turtle2d("forward", turtle2d("turn", t_p1, angle), side_leng);
line2d(
turtle2d("pt", t_p1), turtle2d("pt", t_p2),
width, p1Style = "CAP_ROUND", p2Style = "CAP_ROUND"
);
sierpinski_triangle(
turtle2d("create", 0, 0, 0),
side_len, min_len, thickness, $fn = 12
);
t_p3 = turtle2d("forward", turtle2d("turn", t_p2, angle), side_leng);
line2d(
turtle2d("pt", t_p2), turtle2d("pt", t_p3),
width, p1Style = "CAP_ROUND", p2Style = "CAP_ROUND"
);
module triangle(t, side_leng, thickness) {
t2 = turtle2d("forward", t, side_leng);
t3 = turtle2d("forward", turtle2d("turn", t2, 120), side_leng);
polyline2d([
turtle2d("pt", t),
turtle2d("pt", t2),
turtle2d("pt", t3),
turtle2d("pt", t)
], thickness, startingStyle = "CAP_ROUND", endingStyle = "CAP_ROUND");
}
module two_triangles(t, side_len, len_limit, width) {
angle = 60;
triangle(t, side_len, width);
next_t = turtle2d("turn", turtle2d("forward", t, side_len / 2), angle);
triangle(next_t, side_len / 2, width);
}
module sierpinski_triangle(t, side_len, min_len, thickness) {
triangle(t, side_len, thickness);
module sierpinski_triangle(t, side_len, len_limit, width) {
if(side_len >= len_limit) {
two_triangles(t, side_len, len_limit, width);
sierpinski_triangle(t, side_len / 2, len_limit, width);
sierpinski_triangle(
turtle2d("forward", t, side_len / 2),
side_len / 2, len_limit, width
);
sierpinski_triangle(
turtle2d("turn", turtle2d("forward", turtle2d("turn", t, 60), side_len / 2), -60),
side_len / 2, len_limit, width
);
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);
for(turtle = [t, t2, t3]) {
sierpinski_triangle(turtle, half_len, min_len, thickness);
}
sierpinski_triangle(t3, half_len, min_len, thickness);
}
}
side_len = 150;
len_limit = 4;
width = 0.5;
t = turtle2d("create", 0, 0, 0);
sierpinski_triangle(t, side_len, len_limit, width);
}