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// Empty
difference();
// No children
difference() { }
// Basic
difference() {
cube([10,10,10], center=true);
cylinder(r=4, h=20, center=true);
}
// Two negative objects
translate([0,12,0]) difference() {
cube([10,10,10], center=true);
cylinder(r=4, h=11, center=true);
rotate([0,90,0]) cylinder(r=4, h=11, center=true);
}
// Not intersecting
translate([12,12,0]) difference() {
cube([10,10,10], center=true);
translate([0,0,7.01]) cylinder(r=4, h=4, center=true);
}
// Barely intersecting
translate([24,0,0]) difference() {
cube([10,10,10], center=true);
translate([0,0,6.99]) cylinder(r=4, h=4, center=true);
}
// Subtracting something from nothing
translate([24,12,0]) difference() {
cube([0,10,10], center=true);
# cylinder(r=4, h=20, center=true);
}
// Non-geometry (echo) statement as first child should be ignored
translate([24,-12,0]) difference() {
echo("difference-tests");
cube([10,10,10], center=true);
cylinder(r=4, h=20, center=true);
}
// Subtracting 2D from 3D
translate([12,0,0]) difference() {
cube([10,10,10], center=true);
circle(r=6);
}
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