pub fn ActorFrame(
center: [f32; 2],
size: [f32; 2],
geom: GeomHandle,
mirror_x: bool,
child: View,
) -> ViewExpand description
World-anchored surface: child is boxed to a size rect centered
on a world center, positioned through FrameGeom. mirror_x
flips about the surface center (rozvp horde case: centered content).
Offsets trail the board by one frame under camera motion; steady state
matches. For origin-bearing art (NT sprites with off-center
xorigin/yorigin), prefer ActorFrameWithOrigin or the sprite
batch’s anchor flips, which mirror about the anchor instead.