Area.rel constructor
Use Area.rel if you want to select the area relative to an unknown position.
Implementation
Area.rel({
double? x1,
double? y1,
double? z1,
double? x2,
double? y2,
double? z2,
}) : loc1 = Location.rel(x: _min(x1, x2), y: _min(y1, y2), z: _min(z1, z2)),
loc2 = Location.rel(x: _max(x1, x2), y: _max(y1, y2), z: _max(z1, z2)) {
_setDifferences();
}