Does an efficient cloning of multiple different classes with an override of InternalClone() exist?

[matt.mccormick]

@Gordian

using MetricBasePointer = MetricBaseType*;

This will be problematic in your use case: std::vector<MetricBasePointer> m_MetricVector;. A smart pointer should be used so a reference is kept to the object. That is,

using MetricBasePointer = MetricBaseType::Pointer;

@Gordian

std::cout << dynamic_cast<MIMetricType*>m_MetricVector.at(i)->GetNameOfClass() << std::endl;

After fixing the issue identified above, what is the output of this?

@Gordian

Why should the function return a LightObject::Pointer instead of an pointer of the object.

The function has the same function signature for polymorphism.