1. Department of Computer Science, Otto-von-Guericke University of Magdeburg, Magdeburg, Germany
2. Visual Computing Center, King Abdullah University of Science and Technology, Thuwal, 23955–6900, Saudi Arabia
3. Visualization Core Lab, King Abdullah University of Science and Technology, Thuwal, 23955–6900, Saudi Arabia
4. Department of Computer Science, Friedrich-Alexander-University of Erlangen-Nuremberg, Erlangen, Germany