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This commit is contained in:
Spencer Killen 2023-12-02 22:11:18 -07:00
parent cc5c3d6dca
commit e0f00392d2
Signed by: sjkillen
GPG Key ID: 3AF3117BA6FBB75B
7 changed files with 394 additions and 23 deletions
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203
Cargo.lock generated
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@ -2,13 +2,216 @@
# It is not intended for manual editing. # It is not intended for manual editing.
version = 3 version = 3
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"half",
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"openexr",
"pointcache", "pointcache",
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26
src/lib.rs
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@ -8,7 +8,7 @@ use std::{
}; };
pub trait PointCache { pub trait PointCache {
type Frame; type Frame: Frame;
fn read( fn read(
infile: File, infile: File,
) -> Result< ) -> Result<
@ -22,14 +22,22 @@ pub trait PointCache {
) -> Result<(), Box<dyn Error>>; ) -> Result<(), Box<dyn Error>>;
} }
pub trait Frame {
fn point_idx(&self) -> usize;
fn point(&self) -> Point;
fn with_point(self, point: Point) -> Self;
}
pub struct MDDSeekableFile; pub struct MDDSeekableFile;
#[derive(Debug)] #[repr(C)]
#[derive(Debug, Default, Clone, Copy, PartialEq)]
pub struct Point { pub struct Point {
pub x: f32, pub x: f32,
pub y: f32, pub y: f32,
pub z: f32, pub z: f32,
} }
#[derive(Debug)] #[derive(Debug)]
pub struct MDDFrame { pub struct MDDFrame {
pub frame_idx: usize, pub frame_idx: usize,
@ -38,8 +46,20 @@ pub struct MDDFrame {
pub point: Point, pub point: Point,
} }
impl Frame for MDDFrame {
fn point_idx(&self) -> usize {
self.point_idx
}
fn point(&self) -> Point {
self.point
}
fn with_point(self, point: Point) -> Self {
MDDFrame { point, ..self }
}
}
impl MDDSeekableFile { impl MDDSeekableFile {
fn read_header(infile: &mut File) -> Result<(i32, i32), Box<dyn Error>> { pub fn read_header(infile: &mut File) -> Result<(i32, i32), Box<dyn Error>> {
infile.seek(SeekFrom::Start(0))?; infile.seek(SeekFrom::Start(0))?;
let mut buff = [0u8; size_of::<i32>()]; let mut buff = [0u8; size_of::<i32>()];
infile.read_exact(&mut buff)?; infile.read_exact(&mut buff)?;

3
tools/Cargo.toml
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@ -5,3 +5,6 @@ edition = "2021"
[dependencies] [dependencies]
pointcache = { path = ".." } pointcache = { path = ".." }
openexr = "0.11.0"
half = "1.8.2"
imath-traits = "0.4.0"

0
tools/output.exr Normal file
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185
tools/src/main.rs
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@ -1,29 +1,174 @@
use std::fs::File; // Openexr library is too complex to go off documentation alone and no projects on github using library. Seek out test cases
use pointcache::{MDDSeekableFile, PointCache, MDDFrame, Point}; use imath_traits::Zero;
use openexr::core::channel_list::{CHANNEL_FLOAT, CHANNEL_UINT};
use openexr::core::frame_buffer::{FrameBuffer, Slice};
use openexr::core::header::Header;
use openexr::core::output_file::OutputFile;
use openexr::core::PixelType;
use openexr::rgba::{Rgba, RgbaChannels, RgbaOutputFile};
use openexr::tiled::TiledOutputFile;
use pointcache::{MDDFrame, MDDSeekableFile, Point, PointCache};
use std::default;
use std::{error::Error, fs::File};
// https://github.com/vfx-rs/openexr-rs/blob/25826b4f89bc768b565ba150d6f9c76876ad6bc3/src/core/output_file.rs#L275
// Godot doesn't seem to support Uint images, using f32 instead
fn write_mask_image(
filename: &str,
pixels: &Vec<f32>,
vertex_total: usize,
) -> Result<(), Box<dyn Error>> {
let width = vertex_total;
let height: usize = 1;
let mut header = Header::from_dimensions(width as i32, height as i32);
header.channels_mut().insert("R", &CHANNEL_FLOAT);
let mut frame_buffer = FrameBuffer::new();
frame_buffer.insert(
"R",
&Slice::builder(
PixelType::Float,
&pixels[0] as *const _ as *const u8,
width as i64,
height as i64,
)
.build()?,
)?;
let mut file = OutputFile::new(filename, &header, 1)?;
file.set_frame_buffer(&frame_buffer)?;
unsafe { file.write_pixels(height as i32)? };
Ok(())
}
fn write_point_image(
filename: &str,
pixels: &Vec<Point>,
width: usize,
height: usize,
) -> Result<(), Box<dyn Error>> {
let mut header = Header::from_dimensions(width as i32, height as i32);
header.channels_mut().insert("R", &CHANNEL_FLOAT);
header.channels_mut().insert("G", &CHANNEL_FLOAT);
header.channels_mut().insert("B", &CHANNEL_FLOAT);
let mut frame_buffer = FrameBuffer::new();
[
("R", &pixels[0].x),
("G", &pixels[0].y),
("B", &pixels[0].z),
]
.map(|(name, spot)| {
frame_buffer.insert(
name,
&Slice::builder(
PixelType::Float,
spot as *const _ as *const u8,
width as i64,
height as i64,
)
.x_stride(std::mem::size_of::<Point>())
.build()?,
)
})
.into_iter()
.collect::<Result<(), openexr::Error>>()?;
let mut file = OutputFile::new(filename, &header, 1)?;
file.set_frame_buffer(&frame_buffer)?;
unsafe { file.write_pixels(height as i32)? };
Ok(())
}
#[derive(Debug, Clone, Copy)]
enum PointState {
Unseen,
OneValue(Point),
Varying(usize),
}
use PointState::*;
impl PointState {
fn mask_value(&self) -> f32 {
match *self {
Unseen => panic!(),
OneValue(_) => -1.0,
Varying(idx) => idx as f32,
}
}
}
fn main() { fn main() {
let file_a = std::env::args().nth(1).expect("Need three files"); let mdd_filename = std::env::args()
let file_b = std::env::args().nth(1).expect("Need three files"); .nth(1)
let file_c = std::env::args().nth(1).expect("Need three files"); .expect("expected first argument to be a file path to an .mdd file");
let path = std::env::args()
.nth(2)
.expect("expected second argument to be an output directory");
let file_a = File::open(file_a).unwrap(); let mut mdd_file = File::open(mdd_filename).expect("Mdd filename is not valid");
let file_b = File::open(file_b).unwrap();
let file_c = File::create(file_c).unwrap();
let mut file_b = MDDSeekableFile::read(file_b).unwrap(); let (total_frames, total_points) = MDDSeekableFile::read_header(&mut mdd_file).unwrap();
MDDSeekableFile::map_to(file_a, file_c, |frame| { let mut mask_last: Vec<PointState> = vec![Unseen; total_points as usize];
let frame_b = file_b.next().unwrap()?;
Ok(MDDFrame { let pc = MDDSeekableFile::read(mdd_file.try_clone().unwrap()).unwrap();
point: Point { let mut total_varying = 0;
x: frame_b.point.x - frame.point.x, for frame in pc {
y: frame_b.point.y - frame.point.y, let MDDFrame {
z: frame_b.point.z - frame.point.z, point, point_idx, ..
}, } = frame.unwrap();
..frame match mask_last[point_idx] {
}) Unseen => mask_last[point_idx] = OneValue(point),
}).unwrap(); OneValue(old_point) => {
if point != old_point {
mask_last[point_idx] = Varying(total_varying);
total_varying += 1;
}
}
Varying(_) => {}
}
}
let mask: Vec<f32> = mask_last.iter().map(PointState::mask_value).collect();
// write_mask_image(
// "/home/rat/cow/godot/vertex_animation/mask.exr",
// &pixels.collect(),
// width as usize,
// )
// .unwrap();
let mut pixels: Vec<Point> = Vec::with_capacity(total_varying * (total_frames as usize));
let pc = MDDSeekableFile::read(mdd_file.try_clone().unwrap()).unwrap();
pixels.extend(pc.filter_map(|frame| {
let MDDFrame {
point_idx, point, ..
} = frame.unwrap();
match mask_last[point_idx] {
Unseen => panic!(),
OneValue(_) => None,
Varying(_) => Some(point),
}
}));
assert!(pixels.len() == total_varying * (total_frames as usize));
write_point_image(
"/home/rat/cow/godot/vertex_animation/test.exr",
&pixels,
total_varying,
total_frames as usize,
)
.unwrap();
} }

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