Method scan_best_id

src/picking.rs:580–618

(
        data: &[u8],
        bytes_per_row: u32,
        max_w: u32,
        max_h: u32,
        min_x: u32,
        min_y: u32,
        cx: u32,
        cy: u32,
    )

    #[allow(clippy::too_many_arguments)]
    fn scan_best_id(
        data: &[u8],
        bytes_per_row: u32,
        max_w: u32,
        max_h: u32,
        min_x: u32,
        min_y: u32,
        cx: u32,
        cy: u32,
    ) -> Option<(u32, i32)> {
        let mut best: Option<(u32, i32)> = None;
        for row in 0..max_h as usize {
            let row_off = row as u64 * bytes_per_row as u64;
            for col in 0..max_w as usize {
                let off = row_off + (col as u64) * 4;
                let id = u32::from_le_bytes([
                    data[off as usize],
                    data[off as usize + 1],
                    data[off as usize + 2],
                    data[off as usize + 3],
                ]);
                if id != 0 {
                    let sx = min_x as i32 + col as i32;
                    let sy = min_y as i32 + row as i32;
                    let dx = sx - cx as i32;
                    let dy = sy - cy as i32;
                    let d2 = dx * dx + dy * dy;
                    if let Some((_, bd2)) = best {
                        if d2 < bd2 {
                            best = Some((id, d2));
                        }
                    } else {
                        best = Some((id, d2));
                    }
                }
            }
        }
        best
    }

    fn ensure_staging(&mut self, device: &Device, needed: u64) {
        if self