README.md

# Crunch

Command line image manipulation, set up a pipeline once and run it against all of your assets

## Usage

Crunch takes an image and applies a transformation to it. But what if you want to do **two** transformations?
Or transform more than one image at a time?

Pipelines!

The main value of Crunch is reproducible image processing, as defined by a [pipeline toml]() file.

Basic CLI usage:

```shell
Command line asset manipulation, set up a pipeline once and run it against all of your files

Usage: crunch <COMMAND>

Commands:
  rotate    Rotate an image clockwise by the given degree
  extrude   Take each tile in an image and expand its borders by a given amount. Optionally fill with nearby pixels instead of empty space
  palette   Create a palette file containing every distinct colour from the input image
  scale     Resize an image by a scale factor
  flip      Flip an image along one or more axis
  remap     Convert the colour space of an image to that of a given palette file
  pipeline  Execute a predefined pipeline
  reduce    Limit the number of colours by quantity or threshold
  split     Take a spritesheet and split into individual sprites, skipping empty space
  help      Print this message or the help of the given subcommand(s)

Options:
  -h, --help     Print help
  -V, --version  Print version
```

## Downloads

- [Latest Linux Version](https://lab.lcr.gr/microhacks/crunch/-/jobs/artifacts/trunk/raw/target/release/crunch?job=build-linux)
- [Latest Windows Version](https://lab.lcr.gr/microhacks/crunch/-/jobs/artifacts/trunk/raw/target/x86_64-pc-windows-gnu/crunch.exe?job=build-windows)

## Build From Source

You can simply download this repository and run `cargo build --release` to get a binary for your system. Using `--release` mode
is required in all situations, as the time taken to run a command with the debug build is _several_ orders of magnitude higher.

If you use the `.local/bin` pattern for non-sudo userspace programs, you can use the included build script to simplify things. Otherwise,
follow the below instructions:

**Simple Script**
- Clone this repository
- Run `sh source-install.sh`

**Manual**
- Clone this repository
- Run `cargo build --release`
- Optionally, `strip` the binary
- Copy `target/release/crunch` to a folder located in your `$PATH`