cross method
Cross product.
Implementation
Vector3 cross(Vector3 other) {
final z = _v3storage[2];
final y = _v3storage[1];
final x = _v3storage[0];
final otherStorage = other._v3storage;
final oz = otherStorage[2];
final oy = otherStorage[1];
final ox = otherStorage[0];
return Vector3(y * oz - z * oy, z * ox - x * oz, x * oy - y * ox);
}