distanceToSquared method
Squared distance from this to arg
Implementation
double distanceToSquared(Vector3 arg) {
final argStorage = arg._v3storage;
final dx = _v3storage[0] - argStorage[0];
final dy = _v3storage[1] - argStorage[1];
final dz = _v3storage[2] - argStorage[2];
return dx * dx + dy * dy + dz * dz;
}