OptionalbatchNumber of source SceneObjects processed between yields.
Default 50 — roughly one frame per yield on a typical BIM
model. Smaller values give finer progressive painting at the
cost of more yield overhead.
OptionalyieldCustom yield function — called between batches. Defaults to a
requestAnimationFrame-backed promise (or setTimeout(0)
outside the browser). Pass your own to pace yields against a
scheduler (e.g. requestIdleCallback) or to forward through
an instrumentation hook.
Progressive-emission tuning parameters for BuildSectionCapsParams.progressive.