Generated from an approved conversation, then reviewed by participants. Corrections stay visible.
The client requests small vector-tile packets for the visible area, turns their features into GPU-friendly geometry, and renders ordered style layers. Routes are usually a separate line layer updated from navigation state.
Building the idea, one step at a time
A world-sized dataset is divided into zoom-indexed tiles. The viewport determines which tiles are needed, while a cache keeps panning fluid.
Each vector tile contains compact geometric features rather than finished pixels. A style describes how roads, water, labels, and routes should look.
The renderer triangulates polygons and expands paths into line meshes. Those buffers can be sent to the GPU and redrawn cheaply as the camera moves.
Navigation routes and game minimaps share the same core idea: transform world coordinates into view coordinates, clip to the visible region, then render a styled path above the base map.