Board to Molecule

//! Altium .PcbDoc lane (OLE2 compound file).
//!
//! Reading follows KiCad's Altium importer field by field. Writing copies the
//! source compound file and rewrites only the streams the molecule changes, so
//! every other stream stays byte-identical.

mod read;
mod rec;
mod write;

use crate::model::Board;
use crate::plan::{BBox, Plan};
use anyhow::Result;
use serde_json::Value;
use std::path::Path;

/// Board outline bbox in mm, Y up, in Altium's own absolute frame.
pub fn outline_bbox(path: &Path) -> Result<BBox> {
    let mut cf = read::open(path)?;
    let p = read::board6_props(&mut cf)?;
    let shapes = read::outline_shapes(&read::board_vertices(&p), 0.0);
    let b = crate::model::bbox_of_shapes(&shapes);
    if b.is_empty() {
        anyhow::bail!("no board outline found in Board6");
    }
    Ok(b)
}

/// Preview model of the board.
pub fn read(path: &Path) -> Result<Board> {
    read::read(path)
}

/// Write a molecule .PcbDoc: outline replaced by plan.new, MP1..MP4 added.
pub fn write_molecule(src: &Path, plan: &Plan, out: &Path) -> Result<Value> {
    write::write_molecule(src, plan, out)
}