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add dragon_claw

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Justin Lin
2021-08-02 15:02:15 +08:00
parent ecd8311921
commit fabfd1a9ce
1 changed files with 42 additions and 0 deletions
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examples/dragon/dragon_claw.scad Normal file
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use <curve.scad>;
use <polyline2d.scad>;
use <ptf/ptf_rotate.scad>;
use <util/dedup.scad>;
module dragon_claw() {
pts = [
[0, 0.55], [1, 0.45], [2.5, 0.375], [6, 0.825], [8, 0],
[8, 0.375], [6, 1.875], [4, 1.6], [1.8, 2.5], [1.5, 2.8], [1.2, 3.3], [1.05, 3.8], [1, 4], [0, 8]
];
$fn = 16;
a = 360 / $fn;
x = 7 * cos(a);
y = 7 * sin(a);
path = [
[0, 0], [2.5, 0], [x, y], [x + 1, y + 1]
];
path2 = [
for(i = len(path) - 1; i > -1; i = i - 1)
ptf_rotate([path[i][0], -path[i][1]], a * 2)
];
t_step = 0.25;
claw_path_basic = concat(curve(t_step, path), curve(t_step, path2));
claw_path1 = [for(p = claw_path_basic) [p[0] * 1.15, p[1] * 1.1]];
claw_path2 = [for(p = claw_path_basic) ptf_rotate(p * 1.2, a * 2)];
claw_path3 = [for(p = claw_path_basic) ptf_rotate(p * 1.15, a * 4)];
claw_path4 = [for(p = claw_path_basic) ptf_rotate(p * 1.1, a * 6)];
claw_path5 = [for(p = claw_path_basic) ptf_rotate(p * 0.975, a * 11)];
rotate(-15)
scale([1.1, 1.25, 1])
rotate(15)
intersection() {
rotate_extrude()
polygon(pts);
linear_extrude(5)
polygon(dedup(concat(claw_path1, claw_path2, claw_path3, claw_path4, claw_path5)));
}
}