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use <utils.scad>
// Tetrahedron inscribed in a sphere of radius r
module tetrahedron(r) {
c = r*2;
intersection() {
translate([0, 0, r-r/3]) cube(c, center=true);
intersection_for ( i = [0:2] ) {
rotate([0, 0, 120*i]) rotate([acos(1/3)+180, 0, 0])
translate([0, 0, r-r/3]) cube(c, center=true);
}
}
}
module tetrahedron_faces(r, sc_face=0.6) {
union() {
rotate([180, 0, 180]) translate([0, 0, r/3]) scale([sc_face, sc_face, 1]) children(0);
rotate([acos(1/3)+180, 0, 0]) rotate([180, 0, 0]) translate([0, 0, r/3]) scale([sc_face, sc_face, 1]) children(1);
rotate([0, 0, 120]) rotate([acos(1/3)+180, 0, 0]) rotate([180, 0, 0]) translate([0, 0, r/3]) scale([sc_face, sc_face, 1]) children(2);
rotate([0, 0, 240]) rotate([acos(1/3)+180, 0, 0]) rotate([180, 0, 0]) translate([0, 0, r/3]) scale([sc_face, sc_face, 1]) children(3);
}
}
module d4(size=false, side=false) {
l = side ? side : s2s_d4(size);
if (l == false) {
echo("ERROR: d4: one of side or size should be defined");
}
r = sqrt(6)/4*l;
difference() {
intersection() {
sphere(r=r*0.79, $fn=64);
tetrahedron(r);
}
}
}
module cube_faces(l) {
union() {
translate([0, 0, l/2]) children(0);
rotate([90, 0, 0]) translate([0, 0, l/2]) children(1);
rotate([0, 90, 0]) translate([0, 0, l/2]) children(2);
rotate([-90, 0, 0]) translate([0, 0, l/2]) children(3);
rotate([0, -90, 0]) translate([0, 0, l/2]) children(4);
rotate([180, 0, 0]) translate([0, 0, l/2]) children(5);
}
}
module d6(size=false, side=false) {
l = side ? side : s2s_d6(size);
if (l == false) {
echo("ERROR: d6: one of side or size should be defined");
}
difference() {
intersection() {
cube(l, center=true);
sphere(l*0.79);
}
}
}
// Octahedron inscribed in a sphere of radius r
module octahedron(r) {
c = r*2;
i_r = r / sqrt(3);
intersection() {
cube([c, c, i_r*2], center=true);
intersection_for ( i = [0:2] ) {
rotate([0, 0, 120*i]) rotate([acos(-1/3), 0, 0]) cube([c, c, i_r*2], center=true);
}
}
}
module octahedron_faces(r, sc_face=0.6) {
c = r*2;
i_r = r / sqrt(3);
union() {
translate([0, 0, i_r]) rotate([0, 0, 180]) scale([sc_face, sc_face, 1]) children(0);
rotate([acos(-1/3), 0, 0]) translate([0, 0, i_r]) scale([sc_face, sc_face, 1]) children(4);
rotate([0, 0, 120]) rotate([acos(-1/3)+180, 0, 0]) translate([0, 0, i_r]) rotate([0, 0, 120]) scale([sc_face, sc_face, 1]) children(6);
rotate([0, 0, -120]) rotate([acos(-1/3)+180, 0, 0]) rotate([0, 0, 240]) translate([0, 0, i_r]) scale([sc_face, sc_face, 1]) children(2);
rotate([0, 0, -120]) rotate([acos(-1/3), 0, 0]) rotate([0, 0, 120]) translate([0, 0, i_r]) scale([sc_face, sc_face, 1]) children(5);
rotate([0, 0, 120]) rotate([acos(-1/3), 0, 0]) rotate([0, 0, 240]) translate([0, 0, i_r]) scale([sc_face, sc_face, 1]) children(1);
rotate([acos(-1/3)+180, 0, 0]) translate([0, 0, i_r])scale([sc_face, sc_face, 1]) children(3);
rotate([180, 0, 0]) translate([0, 0, i_r])scale([sc_face, sc_face, 1]) children(7);
}
}
module d8(size=false, side=false) {
l = side ? side : s2s_d8(size);
if (l == false) {
echo("ERROR: d8: one of side or size should be defined");
}
r = sqrt(2)/2*l;
intersection() {
sphere(r*0.86, $fn=64);
octahedron(r);
}
}
// Dodecahedron inscribed in a sphere of radius r
module dodecahedron(r) {
c = r*2;
l = r * 4 / (sqrt(3) * (1+sqrt(5)));
i_r = (l/2)*sqrt(5/2 + 11*sqrt(5)/10);
intersection() {
cube([c, c, i_r*2], center=true);
intersection_for ( i = [0:4] ) {
rotate([0, 0, 72*i]) rotate([acos(-1/sqrt(5)), 0, 0]) cube([c, c, i_r*2], center=true);
}
}
}
module dodecahedron_faces(r, sc_face=1.1) {
c = r*2;
l = r * 4 / (sqrt(3) * (1+sqrt(5)));
echo(l);
i_r = (l/2)*sqrt(5/2 + 11*sqrt(5)/10);
union() {
translate([0, 0, i_r]) scale([sc_face, sc_face, 1]) children(0);
rotate([acos(-1/sqrt(5))+180, 0, 0]) translate([0, 0, i_r]) scale([sc_face, sc_face, 1]) children(1);
rotate([0, 0, 72]) rotate([acos(-1/sqrt(5))+180, 0, 0]) translate([0, 0, i_r]) scale([sc_face, sc_face, 1]) children(3);
rotate([0, 0, 144]) rotate([acos(-1/sqrt(5))+180, 0, 0]) translate([0, 0, i_r]) scale([sc_face, sc_face, 1]) children(5);
rotate([0, 0, 216]) rotate([acos(-1/sqrt(5))+180, 0, 0]) translate([0, 0, i_r]) scale([sc_face, sc_face, 1]) children(4);
rotate([0, 0, 288]) rotate([acos(-1/sqrt(5))+180, 0, 0]) translate([0, 0, i_r]) scale([sc_face, sc_face, 1]) children(2);
rotate([acos(-1/sqrt(5)), 0, 0]) translate([0, 0, i_r]) scale([sc_face, sc_face, 1]) children(10);
rotate([0, 0, 72]) rotate([acos(-1/sqrt(5)), 0, 0]) translate([0, 0, i_r]) scale([sc_face, sc_face, 1]) children(8);
rotate([0, 0, 144]) rotate([acos(-1/sqrt(5)), 0, 0]) translate([0, 0, i_r]) scale([sc_face, sc_face, 1]) children(6);
rotate([0, 0, 216]) rotate([acos(-1/sqrt(5)), 0, 0]) translate([0, 0, i_r]) scale([sc_face, sc_face, 1]) children(7);
rotate([0, 0, 288]) rotate([acos(-1/sqrt(5)), 0, 0]) translate([0, 0, i_r]) scale([sc_face, sc_face, 1]) children(9);
rotate([180, 0, 0]) translate([0, 0, i_r]) scale([sc_face, sc_face, 1]) children(11);
}
}
module d12(size=false, side=false) {
l = side ? side : s2s_d12(size);
if (l == false) {
echo("ERROR: d12: one of side or size should be defined");
}
r = l*sqrt(3)*(1+sqrt(5))/4;
intersection() {
sphere(r*0.96, $fn=64);
dodecahedron(r);
}
}
module icosahedron(r) {
l = r*4/(sqrt(10+2*sqrt(5)));
echo(r);
echo(l);
c = r*2;
i_r = (l/12)*sqrt(3)*(3+sqrt(5));
a_b2 = atan(1/2) + acos(-sqrt(5)/3)/2;
phi = (1+sqrt(5))/2;
rotate([0, -acos((-(1+sqrt(5)))/(2*sqrt(3))), 0])
intersection() {
rotate([0, acos((-(1+sqrt(5)))/(2*sqrt(3))), 0]) cube([c, c, i_r*2], center=true);
mirror([1, 0, 0]) rotate([0, acos((-(1+sqrt(5)))/(2*sqrt(3))), 0]) cube([c, c, i_r*2], center=true);
rotate([0, acos(1/sqrt(3)), -45]) cube([c, c, i_r*2], center=true);
mirror([1, 0, 0]) rotate([0, acos(1/sqrt(3)), -45]) cube([c, c, i_r*2], center=true);
mirror([0, 1, 0]) rotate([0, acos(1/sqrt(3)), -45]) cube([c, c, i_r*2], center=true);
mirror([0, 1, 0]) mirror([1, 0, 0]) rotate([0, acos(1/sqrt(3)), -45]) cube([c, c, i_r*2], center=true);
rotate([90, 0, 0]) rotate([0, acos((sqrt(5)+1)/(2*sqrt(3))), 90]) cube([c, c, i_r*2], center=true);
mirror([0, 0, 1]) rotate([90, 0, 0]) rotate([0, acos((sqrt(5)+1)/(2*sqrt(3))), 90]) cube([c, c, i_r*2], center=true);
rotate([0, 90, atan((-sqrt(5)+1)/(sqrt(5)+1))]) cube([c, c, i_r*2], center=true);
mirror([0, 1, 0]) rotate([0, 90, atan((-sqrt(5)+1)/(sqrt(5)+1))]) cube([c, c, i_r*2], center=true);
}
}
module icosahedron_faces(r, sc_face=0.5) {
l = r*4/(sqrt(10+2*sqrt(5)));
echo(r);
echo(l);
c = r*2;
i_r = (l/12)*sqrt(3)*(3+sqrt(5));
a_b2 = atan(1/2) + acos(-sqrt(5)/3)/2;
phi = (1+sqrt(5))/2;
rotate([0, -acos((-(1+sqrt(5)))/(2*sqrt(3))), 0])
union() {
rotate([0, acos((-(1+sqrt(5)))/(2*sqrt(3))), 0]) translate([0, 0, i_r]) rotate([0, 0, 90]) scale([sc_face, sc_face, 1]) children(0);
rotate([180, acos((-(1+sqrt(5)))/(2*sqrt(3))), 0]) translate([0, 0, i_r]) rotate([0, 0, 270]) scale([sc_face, sc_face, 1]) children(19);
mirror([1, 0, 0]) rotate([0, acos((-(1+sqrt(5)))/(2*sqrt(3))), 0]) translate([0, 0, i_r]) mirror([0, 1, 0]) rotate([0, 0, 90]) scale([sc_face, sc_face, 1]) children(12);
mirror([1, 0, 0]) rotate([180, acos((-(1+sqrt(5)))/(2*sqrt(3))), 0]) translate([0, 0, i_r]) mirror([0, 1, 0]) rotate([0, 0, 90]) scale([sc_face, sc_face, 1]) children(7);
rotate([0, acos(1/sqrt(3)), -45]) translate([0, 0, i_r]) scale([sc_face, sc_face, 1]) children(9);
rotate([180, acos(1/sqrt(3)), -45]) translate([0, 0, i_r]) scale([sc_face, sc_face, 1]) children(10);
mirror([1, 0, 0]) rotate([0, acos(1/sqrt(3)), -45]) translate([0, 0, i_r]) mirror([1, 0, 0]) scale([sc_face, sc_face, 1]) children(1);
mirror([1, 0, 0]) rotate([180, acos(1/sqrt(3)), -45]) translate([0, 0, i_r]) mirror([1, 0, 0]) scale([sc_face, sc_face, 1]) children(18);
mirror([0, 1, 0]) rotate([0, acos(1/sqrt(3)), -45]) translate([0, 0, i_r]) mirror([0, 1, 0]) rotate([0, 0, 180]) scale([sc_face, sc_face, 1]) children(15);
mirror([0, 1, 0]) rotate([180, acos(1/sqrt(3)), -45]) translate([0, 0, i_r]) mirror([0, 1, 0]) rotate([0, 0, 180]) scale([sc_face, sc_face, 1]) children(4);
mirror([0, 1, 0]) mirror([1, 0, 0]) rotate([0, acos(1/sqrt(3)), -45]) translate([0, 0, i_r]) mirror([0, 1, 0]) mirror([0, 1, 0]) scale([sc_face, sc_face, 1]) children(13);
mirror([0, 1, 0]) mirror([1, 0, 0]) rotate([180, acos(1/sqrt(3)), -45]) translate([0, 0, i_r]) mirror([0, 1, 0]) mirror([0, 1, 0]) scale([sc_face, sc_face, 1]) children(6);
rotate([90, 0, 0]) rotate([0, acos((sqrt(5)+1)/(2*sqrt(3))), 90]) translate([0, 0, i_r]) rotate([0, 0, 270]) scale([sc_face, sc_face, 1]) children(11);
rotate([270, 0, 0]) rotate([0, acos((sqrt(5)+1)/(2*sqrt(3))), 90]) translate([0, 0, i_r]) rotate([0, 0, 270]) scale([sc_face, sc_face, 1]) children(8);
mirror([0, 0, 1]) rotate([90, 0, 0]) rotate([0, acos((sqrt(5)+1)/(2*sqrt(3))), 90]) translate([0, 0, i_r]) mirror([1, 0, 0]) rotate([0, 0, 90]) scale([sc_face, sc_face, 1]) children(14);
mirror([0, 0, 1]) rotate([270, 0, 0]) rotate([0, acos((sqrt(5)+1)/(2*sqrt(3))), 90]) translate([0, 0, i_r]) mirror([1, 0, 0]) rotate([0, 0, 90]) scale([sc_face, sc_face, 1]) children(5);
rotate([0, 90, atan((-sqrt(5)+1)/(sqrt(5)+1))]) translate([0, 0, i_r]) rotate([0, 0, 180]) scale([sc_face, sc_face, 1]) children(16);
rotate([180, 90, atan((-sqrt(5)+1)/(sqrt(5)+1))]) translate([0, 0, i_r]) rotate([0, 0, 180]) scale([sc_face, sc_face, 1]) children(3);
mirror([0, 1, 0]) rotate([0, 90, atan((-sqrt(5)+1)/(sqrt(5)+1))]) translate([0, 0, i_r]) mirror([0, 1, 0]) scale([sc_face, sc_face, 1]) children(2);
mirror([0, 1, 0]) rotate([180, 90, atan((-sqrt(5)+1)/(sqrt(5)+1))]) translate([0, 0, i_r]) mirror([0, 1, 0]) scale([sc_face, sc_face, 1]) children(17);
}
}
module d20(size=false, side=false) {
l = side ? side : s2s_d20(size);
if (l == false) {
echo("ERROR: d20: one of side or size should be defined");
}
r = l*sqrt(10+2*sqrt(5))/4;
intersection() {
sphere(r*0.96, $fn=64);
icosahedron(r);
}
}
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