This example shows an interactive orthographic world map that users can drag to rotate, with the globe responding fluidly to pointer movement. The visualization renders country boundaries and graticules using React and D3’s `geoOrthographic` projection, while `geoPath` draws the sphere and grid lines. Drag interactions are handled with D3’s `drag` event system and the `versor` library, which computes quaternion rotations to update the projection’s rotation state via `setRotation`. The map’s data comes from the `world-atlas` TopoJSON files (110m and 50m resolutions), loaded asynchronously with D3’s `json` and converted to GeoJSON features using `topojson.feature`.