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♻️ Extract iqm.rs

main
_ 2020-02-16 22:38:34 +00:00
parent b98a4f09d3
commit c3473b9507
2 changed files with 263 additions and 257 deletions
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260
src/iqm.rs Normal file
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@ -0,0 +1,260 @@
use nom::{
IResult,
bytes::complete::{tag},
number::complete::{le_u32},
};
use std::convert::TryInto;
mod iqm_consts {
pub const VERSION: usize = 0;
pub const FILESIZE: usize = 1;
pub const FLAGS: usize = 2;
pub const NUM_TEXT: usize = 3;
pub const OFS_TEXT: usize = 4;
pub const NUM_MESHES: usize = 5;
pub const OFS_MESHES: usize = 6;
pub const NUM_VERTEXARRAYS: usize = 7;
pub const NUM_VERTEXES: usize = 8;
pub const OFS_VERTEXARRAYS: usize = 9;
pub const NUM_TRIANGLES: usize = 10;
pub const OFS_TRIANGLES: usize = 11;
pub const OFS_ADJACENCY: usize = 12;
pub const NUM_JOINTS: usize = 13;
pub const OFS_JOINTS: usize = 14;
pub const NUM_POSES: usize = 15;
pub const OFS_POSES: usize = 16;
pub const NUM_ANIMS: usize = 17;
pub const OFS_ANIMS: usize = 18;
pub const NUM_FRAMES: usize = 19;
pub const NUM_FRAMECHANNELS: usize = 20;
pub const OFS_FRAMES: usize = 21;
pub const OFS_BOUNDS: usize = 22;
pub const NUM_COMMENT: usize = 23;
pub const OFS_COMMENT: usize = 24;
pub const NUM_EXTENSIONS: usize = 25;
pub const OFS_EXTENSIONS: usize = 26;
}
mod iqm_types {
pub const POSITION: u32 = 0;
pub const TEXCOORD: u32 = 1;
pub const NORMAL: u32 = 2;
pub const TANGENT: u32 = 3;
pub const BLENDINDEXES: u32 = 4;
pub const BLENDWEIGHTS: u32 = 5;
pub const COLOR: u32 = 6;
pub const CUSTOM: u32 = 0x10;
}
mod iqm_formats {
pub const BYTE: u32 = 0;
pub const UBYTE: u32 = 1;
pub const SHORT: u32 = 2;
pub const USHORT: u32 = 3;
pub const INT: u32 = 4;
pub const UINT: u32 = 5;
pub const HALF: u32 = 6;
pub const FLOAT: u32 = 7;
pub const DOUBLE: u32 = 8;
}
#[derive (Debug)]
pub struct IqmMesh {
pub name: u32,
pub material: u32,
pub first_vertex: u32,
pub num_vertexes: u32,
pub first_triangle: u32,
pub num_triangles: u32,
}
#[derive (Debug)]
pub struct IqmHeader {
fields: [u32; 27],
}
#[derive (Debug)]
pub struct IqmVertexArray {
va_type: u32,
va_flags: u32,
va_format: u32,
va_size: u32,
va_offset: u32,
}
#[derive (Debug)]
pub struct IqmModel <'a> {
data: &'a [u8],
header: IqmHeader,
text: Vec <u8>,
pub meshes: Vec <IqmMesh>,
vertexarrays: Vec <IqmVertexArray>,
}
impl IqmHeader {
pub fn from_slice (input: &[u8]) -> IResult <&[u8], IqmHeader> {
let (input, _) = tag (b"INTERQUAKEMODEL\0")(input)?;
let (input, version) = le_u32 (input)?;
// I only know how to parse version 2
assert_eq! (version, 2);
let mut input = input;
let mut fields = [0; 27];
fields [0] = version;
for index in 1..fields.len () {
let (i, h) = le_u32 (input)?;
input = i;
fields [usize::from (index)] = h;
}
Ok ((input, IqmHeader {
fields,
}))
}
}
impl IqmMesh {
pub fn from_slice (input: &[u8]) -> IResult <&[u8], IqmMesh> {
let mut result = IqmMesh {
name: 0,
material: 0,
first_vertex: 0,
num_vertexes: 0,
first_triangle: 0,
num_triangles: 0,
};
let mut input = input;
for field in [
&mut result.name,
&mut result.material,
&mut result.first_vertex,
&mut result.num_vertexes,
&mut result.first_triangle,
&mut result.num_triangles,
].iter_mut () {
let (i, f) = le_u32 (input)?;
input = i;
**field = f;
}
Ok ((input, result))
}
}
impl IqmVertexArray {
pub fn from_slice (input: &[u8]) -> IResult <&[u8], IqmVertexArray> {
let mut result = IqmVertexArray {
va_type: 0,
va_flags: 0,
va_format: 0,
va_size: 0,
va_offset: 0,
};
let mut input = input;
for field in [
&mut result.va_type,
&mut result.va_flags,
&mut result.va_format,
&mut result.va_size,
&mut result.va_offset,
].iter_mut () {
let (i, f) = le_u32 (input)?;
input = i;
**field = f;
}
Ok ((input, result))
}
}
impl <'a> IqmModel <'a> {
pub fn from_slice (data: &'a [u8]) -> IqmModel <'a> {
let header = IqmHeader::from_slice (data).unwrap ().1;
let text = {
let offset: usize = header.fields [iqm_consts::OFS_TEXT].try_into ().unwrap ();
let num: usize = header.fields [iqm_consts::NUM_TEXT].try_into ().unwrap ();
Vec::from (&data [offset..offset + num])
};
let meshes = {
let num: usize = header.fields [iqm_consts::NUM_MESHES].try_into ().unwrap ();
let mut meshes = Vec::with_capacity (num);
let mesh_size = 6 * 4;
let meshes_offset: usize = header.fields [iqm_consts::OFS_MESHES].try_into ().unwrap ();
for i in 0..num {
let offset = meshes_offset + i * mesh_size;
let mesh_slice = &data [offset..offset + mesh_size];
meshes.push (IqmMesh::from_slice (mesh_slice).unwrap ().1);
}
meshes
};
//println! ("{:?}", meshes);
let vertexarrays = {
let num: usize = header.fields [iqm_consts::NUM_VERTEXARRAYS].try_into ().unwrap ();
let mut vertexarrays = Vec::with_capacity (num);
let vertexarray_size = 5 * 4;
let vertexarrays_offset: usize = header.fields [iqm_consts::OFS_VERTEXARRAYS].try_into ().unwrap ();
for i in 0..num {
let offset = vertexarrays_offset + i * vertexarray_size;
let vertexarray_slice = &data [offset..offset + vertexarray_size];
let vertexarray = IqmVertexArray::from_slice (vertexarray_slice).unwrap ().1;
//println! ("{:?}", vertexarray);
vertexarrays.push (vertexarray);
}
vertexarrays
};
IqmModel {
data,
header,
text,
meshes,
vertexarrays,
}
}
pub fn get_vertex_slice (&self,
vertexarray_index: usize
) -> &[u8]
{
let vertexarray = &self.vertexarrays [vertexarray_index];
let bytes_per_float = 4;
let stride = bytes_per_float * vertexarray.va_size;
//assert_eq! (stride, 12);
let offset: usize = (vertexarray.va_offset).try_into ().unwrap ();
let num_bytes: usize = (stride * self.header.fields [iqm_consts::NUM_VERTEXES]).try_into ().unwrap ();
&self.data [offset..offset + num_bytes]
}
pub fn get_index_slice (&self, mesh_index: usize) -> &[u8] {
let mesh = &self.meshes [mesh_index];
let bytes_per_u32 = 4;
let indexes_per_tri = 3;
let stride = bytes_per_u32 * indexes_per_tri;
let offset: usize = (self.header.fields [iqm_consts::OFS_TRIANGLES] + stride * mesh.first_triangle).try_into ().unwrap ();
let num_bytes: usize = (stride * mesh.num_triangles).try_into ().unwrap ();
&self.data [offset..offset + num_bytes]
}
}

260
src/main.rs
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@ -1,9 +1,4 @@
use glam::{Mat4, Vec3, Vec4, Quat}; use glam::{Mat4, Vec3, Vec4};
use nom::{
IResult,
bytes::complete::{tag},
number::complete::{le_u32},
};
use sdl2::event::Event; use sdl2::event::Event;
use sdl2::keyboard::{Keycode, Scancode}; use sdl2::keyboard::{Keycode, Scancode};
@ -15,258 +10,9 @@ use std::io::Read;
use std::path::Path; use std::path::Path;
use std::time::{Duration, Instant}; use std::time::{Duration, Instant};
mod iqm_consts { mod iqm;
pub const VERSION: usize = 0;
pub const FILESIZE: usize = 1;
pub const FLAGS: usize = 2;
pub const NUM_TEXT: usize = 3;
pub const OFS_TEXT: usize = 4;
pub const NUM_MESHES: usize = 5;
pub const OFS_MESHES: usize = 6;
pub const NUM_VERTEXARRAYS: usize = 7;
pub const NUM_VERTEXES: usize = 8;
pub const OFS_VERTEXARRAYS: usize = 9;
pub const NUM_TRIANGLES: usize = 10;
pub const OFS_TRIANGLES: usize = 11;
pub const OFS_ADJACENCY: usize = 12;
pub const NUM_JOINTS: usize = 13;
pub const OFS_JOINTS: usize = 14;
pub const NUM_POSES: usize = 15;
pub const OFS_POSES: usize = 16;
pub const NUM_ANIMS: usize = 17;
pub const OFS_ANIMS: usize = 18;
pub const NUM_FRAMES: usize = 19;
pub const NUM_FRAMECHANNELS: usize = 20;
pub const OFS_FRAMES: usize = 21;
pub const OFS_BOUNDS: usize = 22;
pub const NUM_COMMENT: usize = 23;
pub const OFS_COMMENT: usize = 24;
pub const NUM_EXTENSIONS: usize = 25;
pub const OFS_EXTENSIONS: usize = 26;
}
mod iqm_types { use iqm::IqmModel;
pub const POSITION: u32 = 0;
pub const TEXCOORD: u32 = 1;
pub const NORMAL: u32 = 2;
pub const TANGENT: u32 = 3;
pub const BLENDINDEXES: u32 = 4;
pub const BLENDWEIGHTS: u32 = 5;
pub const COLOR: u32 = 6;
pub const CUSTOM: u32 = 0x10;
}
mod iqm_formats {
pub const BYTE: u32 = 0;
pub const UBYTE: u32 = 1;
pub const SHORT: u32 = 2;
pub const USHORT: u32 = 3;
pub const INT: u32 = 4;
pub const UINT: u32 = 5;
pub const HALF: u32 = 6;
pub const FLOAT: u32 = 7;
pub const DOUBLE: u32 = 8;
}
#[derive (Debug)]
pub struct IqmMesh {
name: u32,
material: u32,
first_vertex: u32,
num_vertexes: u32,
first_triangle: u32,
num_triangles: u32,
}
#[derive (Debug)]
pub struct IqmHeader {
fields: [u32; 27],
}
#[derive (Debug)]
pub struct IqmVertexArray {
va_type: u32,
va_flags: u32,
va_format: u32,
va_size: u32,
va_offset: u32,
}
#[derive (Debug)]
pub struct IqmModel <'a> {
data: &'a [u8],
header: IqmHeader,
text: Vec <u8>,
meshes: Vec <IqmMesh>,
vertexarrays: Vec <IqmVertexArray>,
}
impl IqmHeader {
pub fn from_slice (input: &[u8]) -> IResult <&[u8], IqmHeader> {
let (input, _) = tag (b"INTERQUAKEMODEL\0")(input)?;
let (input, version) = le_u32 (input)?;
// I only know how to parse version 2
assert_eq! (version, 2);
let mut input = input;
let mut fields = [0; 27];
fields [0] = version;
for index in 1..fields.len () {
let (i, h) = le_u32 (input)?;
input = i;
fields [usize::from (index)] = h;
}
Ok ((input, IqmHeader {
fields,
}))
}
}
impl IqmMesh {
pub fn from_slice (input: &[u8]) -> IResult <&[u8], IqmMesh> {
let mut result = IqmMesh {
name: 0,
material: 0,
first_vertex: 0,
num_vertexes: 0,
first_triangle: 0,
num_triangles: 0,
};
let mut input = input;
for field in [
&mut result.name,
&mut result.material,
&mut result.first_vertex,
&mut result.num_vertexes,
&mut result.first_triangle,
&mut result.num_triangles,
].iter_mut () {
let (i, f) = le_u32 (input)?;
input = i;
**field = f;
}
Ok ((input, result))
}
}
impl IqmVertexArray {
pub fn from_slice (input: &[u8]) -> IResult <&[u8], IqmVertexArray> {
let mut result = IqmVertexArray {
va_type: 0,
va_flags: 0,
va_format: 0,
va_size: 0,
va_offset: 0,
};
let mut input = input;
for field in [
&mut result.va_type,
&mut result.va_flags,
&mut result.va_format,
&mut result.va_size,
&mut result.va_offset,
].iter_mut () {
let (i, f) = le_u32 (input)?;
input = i;
**field = f;
}
Ok ((input, result))
}
}
impl <'a> IqmModel <'a> {
pub fn from_slice (data: &'a [u8]) -> IqmModel <'a> {
let header = IqmHeader::from_slice (data).unwrap ().1;
let text = {
let offset: usize = header.fields [iqm_consts::OFS_TEXT].try_into ().unwrap ();
let num: usize = header.fields [iqm_consts::NUM_TEXT].try_into ().unwrap ();
Vec::from (&data [offset..offset + num])
};
let meshes = {
let num: usize = header.fields [iqm_consts::NUM_MESHES].try_into ().unwrap ();
let mut meshes = Vec::with_capacity (num);
let mesh_size = 6 * 4;
let meshes_offset: usize = header.fields [iqm_consts::OFS_MESHES].try_into ().unwrap ();
for i in 0..num {
let offset = meshes_offset + i * mesh_size;
let mesh_slice = &data [offset..offset + mesh_size];
meshes.push (IqmMesh::from_slice (mesh_slice).unwrap ().1);
}
meshes
};
//println! ("{:?}", meshes);
let vertexarrays = {
let num: usize = header.fields [iqm_consts::NUM_VERTEXARRAYS].try_into ().unwrap ();
let mut vertexarrays = Vec::with_capacity (num);
let vertexarray_size = 5 * 4;
let vertexarrays_offset: usize = header.fields [iqm_consts::OFS_VERTEXARRAYS].try_into ().unwrap ();
for i in 0..num {
let offset = vertexarrays_offset + i * vertexarray_size;
let vertexarray_slice = &data [offset..offset + vertexarray_size];
let vertexarray = IqmVertexArray::from_slice (vertexarray_slice).unwrap ().1;
//println! ("{:?}", vertexarray);
vertexarrays.push (vertexarray);
}
vertexarrays
};
IqmModel {
data,
header,
text,
meshes,
vertexarrays,
}
}
pub fn get_vertex_slice (&self,
vertexarray_index: usize
) -> &[u8]
{
let vertexarray = &self.vertexarrays [vertexarray_index];
let bytes_per_float = 4;
let stride = bytes_per_float * vertexarray.va_size;
//assert_eq! (stride, 12);
let offset: usize = (vertexarray.va_offset).try_into ().unwrap ();
let num_bytes: usize = (stride * self.header.fields [iqm_consts::NUM_VERTEXES]).try_into ().unwrap ();
&self.data [offset..offset + num_bytes]
}
pub fn get_index_slice (&self, mesh_index: usize) -> &[u8] {
let mesh = &self.meshes [mesh_index];
let bytes_per_u32 = 4;
let indexes_per_tri = 3;
let stride = bytes_per_u32 * indexes_per_tri;
let offset: usize = (self.header.fields [iqm_consts::OFS_TRIANGLES] + stride * mesh.first_triangle).try_into ().unwrap ();
let num_bytes: usize = (stride * mesh.num_triangles).try_into ().unwrap ();
&self.data [offset..offset + num_bytes]
}
}
pub fn load_small_file <P> (name: P) -> Vec <u8> pub fn load_small_file <P> (name: P) -> Vec <u8>
where P: AsRef <Path> where P: AsRef <Path>