Yes, so basically what I did was to have some c++ code/application generate PBRT files for each frame, with the content of the simulation (box and cell density). After that I used PBRT to add lighting and render the particles, to generate a PNG for each frame.
At last I used VirtualDub to generate a video from the set of PNG’s.

Best regards
Claus Jensen

I am a student of Computer Science at undergraduate level.

This message is with reference to your video “Smoke simulation rendered using PBRT”. In the description of the video, you mention that you used PBRT as the rendering engine for the simulation.

I was wondering whether you could share the technique you used for the animation. PBRT produces images and does not directly support animation, so did you specify each frame using PBRT? Or was PBRT used to specify certain key frames and some other software used to generate the in-betweens?

Would really appreciate your comments.

Thanks!