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add fidget_boo

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Justin Lin 2022-10-02 17:33:30 +08:00
parent c1d1997714
commit ea60a5628a
1 changed files with 121 additions and 0 deletions
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examples/spiral_polygons/fidget_boo.scad Normal file
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use <experimental/r_union2.scad>
beginning_radius = 7.5;
number_of_polygons = 6;
height = 15;
thickness = 1;
spacing = 1.4;
slope = 0.58;
central_scale = 1;
$fn = 48;
fidget_boo(beginning_radius, number_of_polygons, height, thickness, spacing, slope, central_scale);
module fidget_boo(beginning_radius, n, height, thickness, spacing, slope, central_scale) {
fn = 8;
theta = 180 / fn;
y = beginning_radius - beginning_radius * cos(theta);
dr = y / cos(theta) + thickness + spacing;
module boo(r) {
scale(r)
translate([0, .1]) {
union() {
r_union2(radius = .06) {
hull() {
circle(1);
translate([.25, -.5])
rotate(15)
scale([1.5, 1])
circle(.5);
}
translate([.9, -.57])
rotate(-30)
circle(0.25, $fn = 3);
}
r_union2(radius = .06) {
translate([1, .2])
circle(1 / 6);
circle(1);
}
r_union2(radius = .06) {
translate([-1, 0])
circle(1 / 6);
circle(1);
}
}
translate([0.35, .5])
circle(1 / 8);
translate([-0.35, .5])
circle(1 / 8);
translate([0, .6])
scale([1, 2.5])
difference() {
circle(.25);
translate([0, .1])
square(.5, center = true);
}
}
}
module face(r) {
scale(r) {
translate([0.35, .5])
circle(1 / 8);
translate([-0.35, .5])
circle(1 / 8);
translate([0, .6])
scale([1, 2.5])
difference() {
circle(.25);
translate([0, .1])
square(.5, center = true);
}
}
}
rs = [for(i = [0: n + 1]) beginning_radius + i * dr];
half_height = height / 2;
s = [for(i = [1: n + 1]) (rs[i] + slope * half_height) / rs[i]];
module half() {
translate([0, 0, -half_height]) {
// translate([0, 0, -4.6])
difference()
{
linear_extrude(half_height, scale = s[0])
scale(central_scale)
boo(beginning_radius);
linear_extrude(thickness * 2, center = true)
scale(central_scale)
face(beginning_radius);
}
for(i = [1:n - 1]) {
linear_extrude(half_height, scale = s[i])
difference() {
boo(rs[i]);
offset(-thickness)
boo(rs[i] );
}
}
}
}
half();
mirror([0, 0, 1])
half();
}