Function drain_destroyed

native/watchos/src/scene.rs:388–398

Drain the list of handles destroyed since the last call. Swift pulls these and removes the matching SCNNodes from its retainedNodes map.

(dst: *mut u32, max: i64)

/// Drain the list of handles destroyed since the last call. Swift pulls
/// these and removes the matching SCNNodes from its retainedNodes map.
pub fn drain_destroyed(dst: *mut u32, max: i64) -> i64 {
    if dst.is_null() || max <= 0 { return 0; }
    with(|inner| {
        let n = inner.destroyed_queue.len().min(max as usize);
        unsafe {
            std::ptr::copy_nonoverlapping(inner.destroyed_queue.as_ptr(), dst, n);
        }
        inner.destroyed_queue.drain(..n);
        n as i64
    })
}

pub fn copy_lights(dst: *mut Light, max: i64) -> i64 {
    if dst.is_null() || max <= 0 { return 0; }