Why do we need both?

At the moment I can replace normalized() with normalize() when the return type is a void.

Code: Select all

void Arcball::endTracking() {
   
   q = delta_q * q;
   q.normalize();
}

But not when I need to return a value.

Code: Select all

Vector3d d = (p2 - p1).normalized();

I'd prefer it if we just had normalize(), but I guess it is too late for that now.

they does a different job, one returns the normalized vector without modifying it, while the other does an inplace normalization. We offer both to accommodate for different use cases and user tastes.