On… — a running history of what Scott Greenwood has built, written, and published

A running history of what I've built, written, and published — nuclear simulation, graphics, Unreal Engine, and the occasional rabbit hole. About me.

Pinned projects

Realistic Sensors

Three tools around one capture contract — an Unreal Engine 5 plugin that records synchronized, nanosecond-timestamped multi-modal sensor data (RGB, depth, segmentation, DVS, optical flow, IMU, LiDAR, thermal, cubemap); Forge, the Python analysis and fusion toolkit that reads those captures; and rsviewer, a browser viewer that puts every stream on one timeline.

DSTF — Dynamic Systems Testing Framework

A backend-agnostic harness for regression-testing time-dependent system behavior — five simulators, six tolerance-based comparison modes, and an interactive report that doubles as the authoring surface for acceptance criteria.

DatacenterExplorer

An Unreal Engine plugin that visualizes hierarchical data-center infrastructure from JSON configs — part of the ExaDigiT project for digital twins of exascale supercomputers. Ships example configs scaling from ~50 to 150,000+ actors, including Summit and Frontier.

GoNoGo

A modular prerequisite-evaluation (checklist) plugin for Unreal Engine — define sets of conditions that must be satisfied, in any order, grouping, or timing, before a game event fires. Genre-agnostic; works with C++ and Blueprints. Ships a five-station launch-demo.