Click here to download an obj file of Stanford bunny model.
Depth cue rendering is perhaps the simplest way to make a wireframe model looks more realistic. The only thing it is doing is just make the color dimmer when further away. To achieve this, you have to make the bounding box code in the TriangleMesh working, and based on the minimal and maximal z values, you can do the depth cue rendering with a simple color interpolation.
1.3.6