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use super::Q3BspFile;
use crate::coords::CoordSystem;
use crate::traits::light_maps::*;
use crate::types::{ParseError, Result, Rgb};
/// The size of one LightMap
const LIGHTMAP_SIZE: usize = 128 * 128 * 3;
/// Parse the LightMap data from a bsp file.
pub fn from_data(data: &[u8]) -> Result<Box<[LightMap]>> {
if data.len() % LIGHTMAP_SIZE != 0 {
return Err(ParseError::Invalid);
}
let length = data.len() / LIGHTMAP_SIZE;
let mut maps = Vec::with_capacity(length as usize);
for n in 0..length {
let raw = &data[n * LIGHTMAP_SIZE..(n + 1) * LIGHTMAP_SIZE];
let mut map: [[Rgb; 128]; 128] = [[Rgb::white(); 128]; 128];
for (x, outer) in map.iter_mut().enumerate() {
for (y, inner) in outer.iter_mut().enumerate() {
let offset = (x * 128 * 3) + (y * 3);
*inner = Rgb::from_slice(&raw[offset..offset + 3]);
}
}
maps.push(LightMap { map })
}
Ok(maps.into_boxed_slice())
}
impl<T: CoordSystem> HasLightMaps for Q3BspFile<T> {
type LightMapsIter<'a> = std::slice::Iter<'a, LightMap>;
fn lightmaps_iter(&self) -> Self::LightMapsIter<'_> {
self.light_maps.iter()
}
fn get_lightmap(&self, index: u32) -> &LightMap {
&self.light_maps[index as usize]
}
}
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