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use crate::WidthHeightDepth;

/// Incoming boxes are places into the smallest hole that will fit them.
///
/// "small" vs. "large" is based on the heuristic function.
///
/// A larger heuristic means that the box is larger.
pub type BoxSizeHeuristicFn = dyn Fn(WidthHeightDepth) -> u128;

/// The volume of the box
pub fn volume_heuristic(whd: WidthHeightDepth) -> u128 {
    whd.width as u128 * whd.height as u128 * whd.depth as u128
}