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// Copyright (C) 2019 Oscar Shrimpton
//
// This file is part of rust_bsp.
//
// rust_bsp is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// rust_bsp is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with rust_bsp. If not, see <http://www.gnu.org/licenses/>.
//! Parses the BSP tree into a usable format
use super::{HasBrushes, HasFaces, HasVisData};
use crate::coords::CoordSystem;
use na::Vector3;
/// A node in a BSP tree.
/// Either has two children *or* a leaf entry.
#[derive(Debug, Clone)]
pub struct BSPNode {
pub plane_idx: u32,
pub min: Vector3<i32>,
pub max: Vector3<i32>,
pub value: BSPNodeValue,
}
#[derive(Debug, Clone)]
pub enum BSPNodeValue {
Leaf(BSPLeaf),
Children(Box<BSPNode>, Box<BSPNode>),
}
/// A leaf in a BSP tree.
/// Will be under a `BSPNode`, min and max values are stored there.
#[derive(Debug, Clone)]
pub struct BSPLeaf {
pub cluster_id: u32,
pub area: i32,
pub faces_idx: Box<[u32]>,
pub brushes_idx: Box<[u32]>,
}
pub trait HasBSPTree<S: CoordSystem>: HasFaces<S> + HasBrushes<S> + HasVisData {
fn get_bsp_root(&self) -> &BSPNode;
}
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