mod large_label_format;
mod label_format;

pub use large_label_format::LargeLabelFormat;
pub use label_format::LabelFormat;

pub(crate) fn flood(source: &LargeLabelFormat, destination: &mut Vec<u16>, 
    x: usize, y: usize,
    from_color: u32, to_color: u16) {
    let width = source.width;
    let destination_color = destination[x + y * width];
    if destination_color != 0 {
        return;
    }
    let source_color = source.buffer[x + y * width];
    if source_color != from_color {
        return;
    }
    destination[x + y * width] = to_color;
    if x > 0 {
        flood(source, destination, x-1, y, from_color, to_color);
    }
    if (x+1) < width {
        flood(source, destination, x+1, y, from_color, to_color);
    }
    if y > 0 {
        flood(source, destination, x, y-1, from_color, to_color);
    }
    if (y+1) < source.height {
        flood(source, destination, x, y+1, from_color, to_color);
    }
}