volume method
Implementation
double volume() {
final l = lowerBound;
final u = upperBound;
return (u.x - l.x) * (u.y - l.y) * (u.z - l.z);
}
double volume() {
final l = lowerBound;
final u = upperBound;
return (u.x - l.x) * (u.y - l.y) * (u.z - l.z);
}