Selected class projects in graph learning, graphics, animation, and simulation.
Wei-Teng (Wayne) Chu
Coursework projects focused on implementation-heavy systems, interactive simulation, and research-oriented software contributions.
Implemented a atmospheric scattering model for sky color and aerial perspective using Rayleigh scattering for molecules and Mie scattering for aerosols.
The renderer combines height-dependent density, Beer-Lambert extinction, and ray-marched single scattering, with lightweight approximations for limb refraction and weak multiple scattering near the horizon.
Contributed a full implementation of COFT (Coarse-to-Fine Highlighting) to PyTorch Geometric (PyG), enabling structured entity-aware highlighting for hallucination reduction in long-context LLM reasoning tasks.
The module includes:
The project also includes a technical write-up describing the architecture and integration challenges, and the implementation is currently under review in PyTorch Geometric.
Implemented a 2D deformable-body simulation with hundreds of interactive blobs, realistic elasticity, and dense collision dynamics. Built internal force models for stretch, bending, and area-preserving compression, then added stable collision handling through penalty springs and contact impulses.
To keep the simulation responsive under heavy interaction, I also designed broad-phase acceleration with bounding volumes and added expressive blob faces plus reactive animations for a more playful game feel.
The playable demo is embedded on the left. Press Space to start.
Implemented continuous collision detection with SDF ray marching, accurate normal estimation with two-sided finite differences, and interactive flipper mechanics with energy transfer. The focus was on robust numerical simulation together with responsive gameplay.
The playable demo is embedded on the left. Press Space to start, F to flip the left flipper, and J to flip the right flipper.