//! The resting SCALE of each element, so a drawn quad's size can be predicted.
//!
//! One additive draw on both the main menu and `EXTRAS` measures 819.2 x 720 px
//! and matches no sprite at 1x or 2x. Scale is the missing factor: the keyframe
//! carries scale_x / scale_y in percent, and a sprite drawn at 200 % x 500 % is
//! nothing like its stored size.
//!
//!     cargo run -p sylpheed-formats --example rest_scale_of -- 5 6 4
use sylpheed_formats::{pak::PakArchive, ui_layout};
use std::path::PathBuf;

fn main() {
    let root = PathBuf::from(std::env::var("SYLPHEED_DISC").expect("SYLPHEED_DISC"));
    let argv: Vec<String> = std::env::args().skip(1).collect();
    let pak = argv.iter().find(|a| a.parse::<usize>().is_err())
        .cloned().unwrap_or_else(|| "GP_TITLE".to_string());
    let ar = PakArchive::open(root.join(format!("dat/{pak}.pak"))).expect("pak");
    let builds: Vec<usize> = argv.iter().filter_map(|a| a.parse().ok()).collect();
    for build in if builds.is_empty() { vec![5usize, 6] } else { builds } {
        let Ok(by) = ar.read(&ar.entries()[build]) else { continue };
        let Some(b) = ui_layout::parse_build(&by) else { continue };
        println!("=== {pak} entry {build} ===");
        println!("{:<22} {:>10} {:>7} {:>7}  {:>12}  {}", "element", "pivot(w,h)", "sx%", "sy%", "drawn px", "at 1x/2x of pivot*2");
        for e in &b.elements {
            let k = match e.rest() { Some(k) => k, None => continue };
            let w = e.pivot_x * 2;
            let h = e.pivot_y * 2;
            let dw = w as f64 * k.scale_x as f64 / 100.0;
            let dh = h as f64 * k.scale_y as f64 / 100.0;
            println!("{:<22} {:>4},{:<5} {:>7} {:>7}  {:>6.1}x{:<5.1}  {:>6.1}x{:<5.1}",
                     e.name, w, h, k.scale_x, k.scale_y, dw, dh, dw * 2.0, dh * 2.0);
        }
        println!();
    }
}