Projections

Same data, different lie about the earth. Switching projection reprojects the geometry once and refits the view; panning and zooming afterwards never reproject. Equal Earth is the default because a world thematic map in Web Mercator overstates high-latitude area by an order of magnitude, and most callers never choose a projection at all.

Pick the globe and drag it. On an orthographic a drag turns the sphere rather than panning it, and the point you grabbed stays under the cursor at any latitude. Wheel zoom still belongs to the camera, so the two compose.

Spec objects

A projection can be a name, or an object with rotate, center, parallels, clipAngle and the rest. Rotating is how a Pacific-centred world or a country that crosses the antimeridian gets drawn without tearing.

geo: { projection: { name: 'conicEqualArea', rotate: [-100, 0], parallels: [50, 70] } }