VTK/BuildingDoxygen

First, install graphviz

sudo yum install graphviz*

Then, set

BUILD_DOCUMENTATION=ON 

in the VTK CMake configuration.

Once you configure VTK, from your VTK bin directory, run

make DoxygenDoc

The resulting documentation will be in

bin/VTK/Utilities/Doxygen/doc/html

(Note the files are named classvtkClassName.html)