The main entry point to the density tile server

get_density_tile.rs

#[get("/density/<x>/<y>/<z>")]
async fn get_density_tile(x: i32, y: i32, z: i32) -> Result<NamedFile> {
    let file_name = if !(1..=18).contains(&z) {
        get_default_filename()
    } else {
        get_tile_file_name(x, y, z).await
    };
    NamedFile::open(PathBuf::from(file_name)).await
}