A new web platform called I Was Here lets users draw directly on street-level panoramas using WebGL2 technology. The drawings persist in real-time and wrap around buildings and terrain using 3D projection rather than simple flat overlays. The site leverages Mapillary imagery to create a global canvas where anyone can leave marks that others can discover.

This interactive art project transforms passive street view browsing into an active creative experience. Users can contribute drawings anywhere in the world, and these digital graffiti pieces become part of a shared global space. The technical implementation uses WebGL2 for rendering, ensuring smooth performance even with complex 3D geometry calculations.

The platform represents an interesting intersection of mapping technology, creative expression, and social interaction. By combining street-level imagery with collaborative drawing tools, it creates a new way for people to engage with digital maps. The project's vision of a persistent global canvas where random discoveries happen mirrors the serendipity of finding physical street art in unexpected places.