Sphere.copy constructor
      
      Sphere.copy(
    
- Sphere other
Create a sphere as a copy of other.
Implementation
Sphere.copy(Sphere other)
    : _center = Vector3.copy(other._center),
      radius = other.radius;Create a sphere as a copy of other.
Sphere.copy(Sphere other)
    : _center = Vector3.copy(other._center),
      radius = other.radius;