commit c6b522a0c5190e93d9119d8f2efa0e4dfacc4b75 Author: PurpleMyst Date: Sun Jul 5 12:59:06 2020 +0200 root: MVP diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..a1f9599 --- /dev/null +++ b/.gitignore @@ -0,0 +1,8 @@ +/target/ +/images.py +*.png +*.jpg +*.jpeg +*.gif +*.webm +/.mypy_cache/ \ No newline at end of file diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..e72bfdd --- /dev/null +++ b/COPYING @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. 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+] + +[[package]] +name = "winapi-x86_64-pc-windows-gnu" +version = "0.4.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f" diff --git a/Cargo.toml b/Cargo.toml new file mode 100644 index 0000000..664704a --- /dev/null +++ b/Cargo.toml @@ -0,0 +1,14 @@ +[package] +name = "themis" +version = "1.0.0" +authors = ["PurpleMyst "] +license = "GPL-3.0-only" +edition = "2018" + +[dependencies] +image = "0.23.6" +anyhow = "1.0.31" +rayon = "1.3.1" +indicatif = { version = "0.15.0", features = ["rayon", "improved_unicode"] } +noisy_float = "0.1.12" +structopt = "0.3.15" diff --git a/README.md b/README.md new file mode 100644 index 0000000..8ac0def --- /dev/null +++ b/README.md @@ -0,0 +1,7 @@ +# themis + +Create a photo mosaic out of any tileset and source image! + +## Usage + +Clone the repo and run `cargo run --release -- -h`, everything will be explained diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..afbe8cf --- /dev/null +++ b/src/main.rs @@ -0,0 +1,128 @@ +use std::collections::*; +use std::fs; +use std::path::{Path, PathBuf}; + +use anyhow::Result; +use image::{DynamicImage, GenericImage, GenericImageView, Pixel, Rgba}; +use indicatif::{ParallelProgressIterator, ProgressBar, ProgressStyle}; +use noisy_float::prelude::*; +use rayon::prelude::*; +use structopt::StructOpt; + +/// How big each square tile of the mosaic will be (in pixels) +const TILE_SIDE: u32 = 26; + +/// Calculate the average color of a given image by averaging all of its pixels together (including alpha) +fn average_color(image: &DynamicImage) -> Rgba { + let pixel_count = image.width() as f64 * image.height() as f64; + + let (mut r, mut g, mut b, mut a) = (0., 0., 0., 0.); + for (_x, _y, Rgba([pr, pg, pb, pa])) in image.pixels() { + r += pr as f64; + g += pg as f64; + b += pb as f64; + a += pa as f64; + } + + let r = (r / pixel_count) as u8; + let g = (g / pixel_count) as u8; + let b = (b / pixel_count) as u8; + let a = (a / pixel_count) as u8; + Rgba([r, g, b, a]) +} + +/// Calculate the euclidean distance between two pixels +fn distance(pixel1: Rgba, pixel2: Rgba) -> R64 { + r64(pixel1 + .map2(&pixel2, |l, r| if l < r { r - l } else { l - r }) + .channels() + .iter() + .map(|&n| (n as f64).powi(2)) + .sum::() + .sqrt()) +} + +/// Choose the image in the given tileset whose average color is closest to the given pixel +fn pick_image_for_pixel(pixel: Rgba, possible_tiles: &[DynamicImage]) -> Option<&DynamicImage> { + possible_tiles + .into_par_iter() + .min_by_key(|&img| distance(average_color(img), pixel)) +} + +/// Load the tiles from the given directory +fn load_images>(dir: P) -> Result> { + let dir = fs::read_dir(dir)?.collect::, _>>()?; + let len = dir.len(); + Ok(dir + .into_par_iter() + .progress_with(make_pbar("images loaded", len as _)) + .filter_map(|entry| { + Some( + image::open(entry.path()) + .ok()? + .thumbnail_exact(TILE_SIDE, TILE_SIDE), + ) + }) + .collect::>()) +} + +/// Create a styled progress bar +fn make_pbar(msg: &str, len: u64) -> ProgressBar { + let bar = ProgressBar::new(len); + bar.set_message(msg); + bar.set_style( + ProgressStyle::default_bar() + .template("[{elapsed_precise}/{eta_precise}] {bar:40.green/red} {pos:>4}/{len:4} {msg}") + .progress_chars("##-"), + ); + bar +} + +#[derive(StructOpt)] +struct Opt { + /// The image to turn into a mosaic + #[structopt(parse(from_os_str))] + image: PathBuf, + + /// The directory containing the tiles to utilize + #[structopt(parse(from_os_str))] + tiles_directory: PathBuf, + + /// The side length that the image to turn into to a mosaic will be resized to + #[structopt(short, long, default_value = "128")] + mosaic_size: u32, +} + +fn main() -> Result<()> { + let Opt { + image, + tiles_directory, + mosaic_size, + } = Opt::from_args(); + + let possible_tiles = load_images(tiles_directory)?; + let image = image::open(image)?.thumbnail_exact(mosaic_size, mosaic_size); + + // For every unique pixel in the image, find its most appropiate tile + let unique_pixels = image.pixels().collect::>(); + let pbar = make_pbar("pixels", unique_pixels.len() as _); + let tiles = unique_pixels + .into_par_iter() + .progress_with(pbar) + .filter_map(|(x, y, pixel)| { + let pixel = pick_image_for_pixel(pixel, &possible_tiles)?; + Some(((x, y), pixel)) + }) + .collect::>(); + + // Apply the mapping previously calculated and save the mosaic + let mut mosaic = DynamicImage::new_rgba8(image.width() * TILE_SIDE, image.height() * TILE_SIDE); + for y in 0..image.height() { + for x in 0..image.width() { + mosaic.copy_from(*tiles.get(&(x, y)).unwrap(), x * TILE_SIDE, y * TILE_SIDE)?; + } + } + mosaic.save("mosaic.png")?; + + Ok(()) +}