Developer Proposes Accessible Event List Architecture for lingbot-map 3D Viewer

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A developer has outlined a frontend accessibility architecture for Robbyant/lingbot-map, an Apache-2.0 open-source 3D scene reconstruction model that visualizes streaming spatial data in a browser canvas. The proposal argues that a WebGL canvas alone cannot provide screen reader users with a stable reading order, searchable object history, or keyboard navigation. The suggested design feeds a shared stream of typed scene events simultaneously to both the 3D renderer and a semantic HTML event list, enabling synchronized selection between the two views. To avoid overwhelming assistive technologies during high-frequency streaming, the architecture recommends throttling live region announcements to periodic summaries while keeping the full event history intact. The author clarifies this is a proposed architecture and not a review of the project's current accessibility implementation.

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