Nerd mode
Nerd facts
Alströmergymnasiet map
A little machinery behind this page: map, point cloud and photo.
What loaded
Open a view to see what actually loaded.
Maps
Map views are stitched top-down images. Large ones are served as tiles so zooming in asks for detail only where you are looking.
That is why a map can open quickly and still have sharper pieces waiting deeper in the zoom.
Tiled web maps · Tile Map Service
Point clouds
A point cloud is the scene as many colored points instead of a solid mesh. It is good for seeing what the reconstruction actually measured.
Public clouds use streamable tiles when available, so the browser loads the part you are looking at instead of one huge source file.
PLY file format · Point Cloud Library
Photos
Small first. Sharper AVIF, WebP, or JPEG when the browser and screen can use them.
The fallback is just an image. That is the point.
AVIF · WebP · JPEG
Why choices exist
One file does not fit every screen and connection. Browse stays light; inspect spends more when you ask.
