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refactor

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Justin Lin
2021-08-18 16:24:57 +08:00
parent ad6b0ae4f1
commit 798676e2eb
2 changed files with 86 additions and 85 deletions
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86
examples/fidget_ball.scad Normal file
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use <hollow_out.scad>;
$fn = 48;
radius = 40;
thickness = 2;
layers = 5;
spacing = 2.5;
support_thickness = 1;
drill_angle = 36;
fidget_ball(radius, thickness, layers, spacing, support_thickness);
module fidget_ball(radius, thickness, layers, spacing, support_thickness) {
module drill(deep, drill_angle) {
a = drill_angle / 2;
r = deep * tan(a);
difference() {
children(0);
union() {
for(i = [0:3]) {
rotate([90 * i, 0, 0])
translate([0, 0, -deep])
linear_extrude(deep, scale = 0.01)
circle(r);
}
for(i = [90, -90]) {
rotate([0, i, 0])
translate([0, 0, -deep])
linear_extrude(deep, scale = 0.01)
circle(r);
}
for(i = [0:3]) {
rotate([0, 54.7356, 45 + i * 90])
translate([0, 0, -deep])
linear_extrude(deep, scale = 0.01)
circle(r);
rotate([0, -125.2644, 45 + i * 90])
translate([0, 0, -deep])
linear_extrude(deep, scale = 0.01)
circle(r);
}
}
}
}
module hollow_sphere(radius, thickness) {
difference() {
sphere(radius);
sphere(radius - thickness);
}
}
module support(i, sphere_r, height, support_thickness, drill_angle) {
a = drill_angle / 2;
support_r = 2 * sphere_r * sin(a / 2) ^ 2;
sina = sin(a);
tana = tan(a);
translate([0, 0, -sphere_r])
rotate_extrude()
translate([sphere_r * sina, 0])
polygon([[0, support_r], [-.75, support_r], [-tana * support_r - support_thickness, 0], [-tana * support_r, 0]]);
translate([0, 0, -sphere_r - height * i])
linear_extrude(height * i)
hollow_out(support_thickness)
circle(sphere_r * sina - tana * support_r);
}
r_step = thickness + spacing;
drill(radius, drill_angle)
for(i = [0:layers - 1]) {
hollow_sphere(radius - r_step * i, thickness);
}
for(i = [0:layers - 1]) {
support(i, radius - r_step * i, r_step, support_thickness, drill_angle);
}
}

85
examples/turtle/fidget_ball.scad
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@@ -1,85 +0,0 @@
$fn = 48;
radius = 40;
thickness = 2;
layers = 5;
spacing = 2.5;
support_thickness = 1;
drill_angle = 36;
fidget_ball(radius, thickness, layers, spacing, support_thickness);
module drill(deep, drill_angle) {
a = drill_angle / 2;
r = deep * tan(a);
difference() {
children(0);
union() {
for(i = [0:3]) {
rotate([90 * i, 0, 0])
translate([0, 0, -deep])
linear_extrude(deep, scale = 0.01)
circle(r);
}
for(i = [90, -90]) {
rotate([0, i, 0])
translate([0, 0, -deep])
linear_extrude(deep, scale = 0.01)
circle(r);
}
for(i = [0:3]) {
rotate([0, 54.7356, 45 + i * 90])
translate([0, 0, -deep])
linear_extrude(deep, scale = 0.01)
circle(r);
rotate([0, -125.2644, 45 + i * 90])
translate([0, 0, -deep])
linear_extrude(deep, scale = 0.01)
circle(r);
}
}
}
}
module hollow_sphere(radius, thickness) {
difference() {
sphere(radius);
sphere(radius - thickness);
}
}
module support(i, sphere_r, height, support_thickness, drill_angle) {
a = drill_angle / 2;
support_r = 2 * sphere_r * sin(a / 2) ^ 2;
sina = sin(a);
tana = tan(a);
translate([0, 0, -sphere_r])
rotate_extrude()
translate([sphere_r * sina, 0])
polygon([[0, support_r], [-.75, support_r], [-tana * support_r - support_thickness, 0], [-tana * support_r, 0]]);
translate([0, 0, -sphere_r - height * i])
linear_extrude(height * i)
difference() {
circle(sphere_r * sina - tana * support_r);
circle(sphere_r * sina - tana * support_r - support_thickness);
}
}
module fidget_ball(radius, thickness, layers, spacing, support_thickness) {
r_step = thickness + spacing;
drill(radius, drill_angle)
for(i = [0:layers - 1]) {
hollow_sphere(radius - r_step * i, thickness);
}
for(i = [0:layers - 1]) {
support(i, radius - r_step * i, r_step, support_thickness, drill_angle);
}
}