AdvancedOptions for the generator
StaticdefaultDefaults for every new GeometryThumbnailGenerator; an option passed as undefined keeps its default
Empties the thumbnail cache
Returns the thumbnail for a geometry, drawing it on the first request and caching it after
The geometry to thumbnail
Returns the cached result for a geometry uid, ready or unsupported, or undefined when none is
cached
The geometry uid to look up
Drops cached thumbnails for geometries no longer in use
Geometry uids to keep; the rest are dropped
Draws and caches small shaded previews of Geometry3Ds, keyed by
uidEach preview is drawn in one colour, whatever the material, on the CPU into a 2D canvas, so it needs no renderer.