3D Scenarios Simulator
The 3D Scenarios Simulator is a central component of the AccesS simulation toolkit, enabling realistic, data-driven evaluation of how VUM-based Virtual Humans interact with buildings and urban spaces. It brings together 3D environments, Virtual Humans (VHs), scenario definition, and simulation execution to assess accessibility challenges in practical contexts. By combining movement simulation, interaction modelling, and sensory disability modelling, the module helps evaluate not only whether a space meets formal requirements, but also how different users may experience and interact with it.
With this simulator, 3D building or urban models can be prepared as interactive environments in which user-specific situations are tested before implementation. Users can define realistic scenarios (such as moving through a space, opening a door, using a switch, or interacting with furniture), and run them with different Virtual User Models (VUMs). The tool then produces assessment results, including critical errors, warnings, joint-force information, reachability issues, and potential fatigue risks. These outputs help designers, consultants, and accessibility experts understand where barriers may occur, which user groups may be affected, and what design aspects require improvement. By identifying these issues early, the simulator reduces the risk of costly changes later and supports more inclusive, evidence-based design decisions.