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add fidget_skull

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Justin Lin
2022-08-12 17:12:01 +08:00
parent 995b531faf
commit a403ca060e
1 changed files with 146 additions and 0 deletions
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146
examples/spiral_polygons/fidget_skull.scad Normal file
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use <rounded_square.scad>
beginning_radius = 5;
fn = 6;
number_of_polygons = 6;
height = 15;
thickness = 1;
spacing = 1;
slope = 0.65;
base_height = height * 1.75;
rotate(90)
fidget_skull(beginning_radius, fn, number_of_polygons, height, thickness, spacing, slope, base_height);
module fidget_skull(beginning_radius, fn, number_of_polygons, height, thickness, spacing, slope, base_height) {
skull_scale = .925;
n = number_of_polygons + 1;
theta = 180 / fn;
y = beginning_radius - beginning_radius * cos(theta);
dr = y / cos(theta) + thickness + spacing;
module drawPolygon(r) {
rotate(180)
circle(r, $fn = fn);
}
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, -half_height / 2])
linear_extrude(half_height, scale = s[0])
difference() {
drawPolygon(beginning_radius);
drawPolygon(beginning_radius - thickness);
}
//rotate(-(n) * 5)
for(i = [1:n - 1]) {
linear_extrude(half_height, scale = s[i])
// rotate(i * 5)
difference() {
drawPolygon(rs[i]);
drawPolygon(rs[i] - thickness);
}
}
}
}
translate([0, rs[len(rs) - 1]] * 1.1) {
half();
mirror([0, 0, 1])
half();
}
translate([0, -rs[len(rs) - 1]] * 1.1) {
half();
mirror([0, 0, 1])
half();
}
// scope
module eye_scope() {
scale(s[n - 1])
difference() {
drawPolygon(rs[n - 1]);
drawPolygon(rs[n - 1] - thickness);
}
}
module teeth_scope() {
translate([-rs[len(rs) - 1] * 1.2, rs[len(rs) - 1] * .6])
rotate(-5)
rounded_square(size = [beginning_radius * 1.75, beginning_radius * 1.45], corner_r = beginning_radius / 5, center = true);
translate([-rs[len(rs) - 1] * 1.2, 0])
rounded_square(size = [beginning_radius * 1.8, beginning_radius * 1.35], corner_r = beginning_radius / 5, center = true);
translate([-rs[len(rs) - 1] * 1.2, -rs[len(rs) - 1] * .65])
rotate(5)
rounded_square(size = [beginning_radius * 1.5, beginning_radius * 1.5], corner_r = beginning_radius / 5, center = true);
}
module skull_scope() {
offset(thickness * 1.5)
hull() {
translate([0, rs[len(rs) - 1] * 1.1])
eye_scope();
translate([0, -rs[len(rs) - 1] * 1.1])
eye_scope();
}
offset(thickness * 6)
hull()
teeth_scope();
}
module skull() {
linear_extrude(height / 2, scale = skull_scale)
difference() {
translate([0, 0, -height / 2])
skull_scope();
teeth_scope();
// nose
translate([-beginning_radius * 2, beginning_radius / 4])
rotate(-15)
scale([2, 1])
circle(beginning_radius / 2.5);
translate([-beginning_radius * 2, -beginning_radius / 4])
rotate(15)
scale([2, 1])
circle(beginning_radius / 2.5);
}
}
difference() {
union() {
skull();
mirror([0, 0, 1])
skull();
}
translate([0, rs[len(rs) - 1]] * 1.1)
hull() {
half();
mirror([0, 0, 1])
half();
}
translate([0, -rs[len(rs) - 1]] * 1.1)
hull(){
half();
mirror([0, 0, 1])
half();
}
}
}