1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
// Copyright (C) 2019 Oscar Shrimpton
//
// This file is part of stockton-bsp.
//
// stockton-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.
//
// stockton-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 stockton-bsp. If not, see <http://www.gnu.org/licenses/>.
use std::convert::TryInto;
use super::Q3BSPFile;
use crate::helpers::{slice_to_u32, slice_to_vec3};
use crate::types::{Result, ParseError, RGBA};
use crate::traits::vertices::*;
use crate::coords::CoordSystem;
/// The size of one vertex
const VERTEX_SIZE: usize = (4 * 3) + (2 * 2 * 4) + (4 * 3) + 4;
/// Parse a Vertices data from the data in a BSP file.
pub fn verts_from_data(data: &[u8]) -> Result<Box<[Vertex]>> {
if data.len() % VERTEX_SIZE != 0 {
return Err(ParseError::Invalid);
}
let length = data.len() / VERTEX_SIZE;
let mut vertices = Vec::with_capacity(length as usize);
for n in 0..length {
let offset = n * VERTEX_SIZE;
let vertex = &data[offset..offset + VERTEX_SIZE];
vertices.push(Vertex {
position: slice_to_vec3(&vertex[0..12]),
tex: TexCoord::from_bytes(&vertex[12..28].try_into().unwrap()),
normal: slice_to_vec3(&vertex[28..40]),
color: RGBA::from_slice(&vertex[40..44]),
})
}
Ok(vertices.into_boxed_slice())
}
/// Parse the given data as a list of MeshVerts.
pub fn meshverts_from_data(data: &[u8]) -> Result<Box<[MeshVert]>> {
if data.len() % 4 != 0 {
return Err(ParseError::Invalid);
}
let length = data.len() / 4;
let mut meshverts = Vec::with_capacity(length as usize);
for n in 0..length {
meshverts.push(slice_to_u32(&data[n * 4..(n + 1) * 4]))
}
Ok(meshverts.into_boxed_slice())
}
impl<T: CoordSystem> HasVertices<T> for Q3BSPFile<T> {
type VerticesIter<'a> = std::slice::Iter<'a, Vertex>;
fn vertices_iter<'a>(&'a self) -> Self::VerticesIter<'a> {
self.vertices.iter()
}
fn get_vertex<'a>(&'a self, index: u32) -> &'a Vertex {
&self.vertices[index as usize]
}
}
impl<T: CoordSystem> HasMeshVerts<T> for Q3BSPFile<T> {
type MeshVertsIter<'a> = std::slice::Iter<'a, MeshVert>;
fn meshverts_iter<'a>(&'a self) -> Self::MeshVertsIter<'a> {
self.meshverts.iter()
}
fn get_meshvert<'a>(&self, index: u32) -> MeshVert {
self.meshverts[index as usize]
}
}
|
