pub fn picture(
scene: &SceneState,
lit: Option<&Lighting>,
visuals: &[Visual],
camera: &Camera,
) -> GeopResult<Vec<u8>>Expand description
The picture of scene seen by camera, as a PNG: its part, and every
part placed in it, but what hidden names — none, if the scene does
not say; what lit lights, lit; and visuals, what a step being
edited draws, over it all.
A placed part’s colour is that of the scene’s instances, where it is
one of them, else that of the part’s own (see super::ViewInstance).