Struct NativeExtract 

pub struct NativeExtract { /* private fields */ }

The hierarchy-derived facts a plugin’s extract fn needs, computed once per frame.

A leaf placed by hand from Transform::absolute alone ignores everything an ancestor says: it stays pinned while its scroll container scrolls, ignores opacity, and keeps painting inside a hidden subtree. Build one of these at the top of the extract fn and ask it to place each entity instead. It reads the same memo the built-in extractors share, so the maps are built once per frame no matter how many extractors ask.

Implementations

impl NativeExtract

pub fn new(main: &mut World) -> Self

Reads the frame’s hierarchy, scroll, opacity, visibility, and clip maps from the main world.

pub fn place( &mut self, entity: Entity, transform: &Transform, ) -> Option<NativePlacement>

Resolves where entity’s leaf belongs, or None when it should not be extracted at all: hidden by a Visible(false) on itself or an ancestor, or scrolled fully out of the nearest scroll or overflow: hidden container.