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/*
* Copyright (C) Oscar Shrimpton 2020
*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
use super::Q3BspFile;
use crate::coords::CoordSystem;
use crate::helpers::{slice_to_u32, slice_to_vec3};
use crate::traits::models::*;
use crate::types::{ParseError, Result};
const MODEL_SIZE: usize = (4 * 3 * 2) + (4 * 4);
pub fn from_data(data: &[u8], n_faces: u32, n_brushes: u32) -> Result<Box<[Model]>> {
if data.len() % MODEL_SIZE != 0 {
return Err(ParseError::Invalid);
}
let n_models = data.len() / MODEL_SIZE;
let mut models = Vec::with_capacity(n_models);
for n in 0..n_models {
let raw = &data[n * MODEL_SIZE..(n + 1) * MODEL_SIZE];
let mins = slice_to_vec3(&raw[0..12]);
let maxs = slice_to_vec3(&raw[12..24]);
let faces_idx = {
let start = slice_to_u32(&raw[24..28]);
let n = slice_to_u32(&raw[28..32]);
if start + n > n_faces {
return Err(ParseError::Invalid);
}
start..start + n
};
let brushes_idx = {
let start = slice_to_u32(&raw[32..36]);
let n = slice_to_u32(&raw[36..40]);
if start + n > n_brushes {
return Err(ParseError::Invalid);
}
start..start + n
};
models.push(Model {
mins,
maxs,
faces_idx,
brushes_idx,
})
}
Ok(models.into_boxed_slice())
}
impl<T: CoordSystem> HasModels<T> for Q3BspFile<T> {
type ModelsIter<'a> = std::slice::Iter<'a, Model>;
fn models_iter(&self) -> Self::ModelsIter<'_> {
self.models.iter()
}
fn get_model(&self, index: u32) -> &Model {
&self.models[index as usize]
}
}
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