Smooth gradient scaled to the model's actual elevation range — deep blue at the lowest point, white at the peak.
TerraPrinter /osm/ endpoint backed by a full-planet osm2pgsql import (~686M buildings, 260M highways, 62M water, 86M landcover, 30M structures). Fetching is now cache-friendly, rate-limit free, and dramatically faster for dense cities like Boston, NYC, and London. A single config constant lets the frontend fall back to the public Overpass API if the local mirror is ever down.localStorage and flow through to the GLB preview. Defaults match the historical built-in palette so existing models look unchanged until you pick new colors.<m:basematerials> resource with one base color per layer, and each object references it via pid/pindex. Slicers like Bambu Studio and PrusaSlicer now open exported 3MF files with every layer pre-assigned its correct color for multi-material printing — previously 3MF files opened as a single gray object.bridge=yes are preserved when they cross water (instead of getting clipped) and their deck is anchored to a flat approach-terrain Z instead of sampling the DEM river bed. Bridges now render as seamless continuations of the road network crossing rivers, with printable flat slabs that connect cleanly to the approach roads at both ends.tunnel=yes (roads, trails, or railways) is skipped entirely. Approach roads — which are separate non-tunnel OSM ways — naturally terminate at the portal location, giving a clean entrance/exit appearance without synthesizing portal geometry.