Missing data directory and visualization information

[corsair17]

Hi

I'm currently following the code exercises in the DDG introduction paper. There are two problems:

1. data/ directory doesn't exist in the repo. For example, the Stanford bunny .obj cannot be found.

2. The visualization doesn't display the "Euler characteristic" and "total angle defect" like shown here:
   

Any ideas why for the inconsistency between the paper and the repo?

thanks!

[fdegoes]

1. you can find these models online, eg, https://en.wikipedia.org/wiki/List_of_common_3D_test_models

2. We might have edited the viewer slightly to display these texts for this figure specifically, and then discarded the change.