Function execute_lua

crates/luacad/src/lua_engine.rs:201–1434

Execute LuaCAD code and return the resulting geometries. Returns `Ok(geometries)` on success, or `Err(message)` on failure.

(code: &str)

  }

  // cube(size) — uniform
  Ok((s, s, s, false))
}

// ---------------------------------------------------------------------------
// sphere() argument parsing
// ---------------------------------------------------------------------------

/// Returns (radius, segments).
fn parse_sphere_args(args: &mlua::MultiValue) -> mlua::Result<(f32, u32)> {
  if args.is_empty() {
    return Err(mlua::Error::RuntimeError(
      "sphere() requires at least 1 argument".to_string(),
    ));
  }

  let first = &args[0];

  if let LuaValue::Table(t) = first {
    check_table_keys(t, "sphere", &["r", "d", "segments", "fn"])?;

    let radius = if let Some(r) = table_get_f32(t, "r") {
      r
    } else if let Some(d) = table_get_f32(t, "d") {
      d / 2.0
    } else {
      t.get::<f32>(1).unwrap_or(1.0)
    };
    let segments = table_segments(t, DEFAULT_SEGMENTS);
    return Ok((radius, segments));
  }

  let radius = lua_val_to_f32(first).ok_or_else(|| {
    mlua::Error::RuntimeError(
      "sphere() argument must be a number or {r=..} table".to_string(),
    )
  })?;
  let segments = args
    .get(1)
    .and_then(lua_val_to_f32)
    .map(|v| v as u32)
    .unwrap_or(DEFAULT_SEGMENTS);
  Ok((radius, segments))
}

// ---------------------------------------------------------------------------
// cylinder() argument parsing
// ---------------------------------------------------------------------------

/// Returns (r1, r2, height, segments, center).
fn parse_cylinder_args(
  args: &mlua::MultiValue,
) -> mlua::Result<(f32, f32, f32, u32, bool)> {
  if args.is_empty() {
    return Err(mlua::Error::RuntimeError(
      "cylinder() requires at least 1 argument".to_string(),
    ));
  }