Function b2World_OverlapShape 

pub unsafe extern "C" fn b2World_OverlapShape(
    worldId: b2WorldId,
    proxy: *const b2ShapeProxy,
    filter: b2QueryFilter,
    fcn: b2OverlapResultFcn,
    context: *mut c_void,
) -> b2TreeStats

Overlap test for all shapes that overlap the provided shape proxy.