ImgScal

Automate image processing programmatically.

• Built around concurrency.
• Workflows writteng in lua.
• Builtin handling for image encodings and color models.
• Included ImGui wrapper for building custom GUI tools.
• Spritesheet support.
• Command-line support, e.g. imgscal resize ./image.png 100 100.

Documentation - Live

Run make doc to generate the lua api documentation to ./docs/.

Run

make start
# or
make dev

• make dev runs make install-examples then make start.
• Use make start for a first time launch, as make install-examples requires a valid config.

Examples

Examples can be installed by running make install-examples. This requires ImgScal to have been run at least once, as the config file and workflow directory must exist.

GUI/Imger - Source

Demo worflow that creates an interface with controls to apply filters from the Imger library onto images.

GUI/Noise - Source

Demo workflow that creates an interface with controls to generate noise maps.

GUI/Filter - Source

Demo workflow that creates an interface to apply filters to an image.

Build

• Requires
  • Go >= 1.22.6
  • Makefile
  • A C compiler (mingw, TDM-GCC or g++)

make build-windows
# or
make build-linux

Logs

There is an entry point at ./cmd/log that can be called to print the log file @latest.txt if it exists. make log is a shortcut for calling this.

This can also be used to pipe the output.

make log | grep '! ERROR'
make log | kate -i
make log > latest.txt

Known Issues

• There is an upstream issue related to mainthread when running on Windows.
  • Sometimes causes the application to crash within the first frame of the master window.
  • Sometimes prevents gui.update() from updating the UI when called from a scheduled function.
  • Recommended to run through WSL when using the gui library on Windows.
• Some parts of the gui library may not work properly.
  • gui.css_parse() is added but the underlying g.ParseCSSStyleSheet() is currently broken.
  • gui.wg_css_tag() can still be used, but will not have any affect until the upstream issue is fixed.
• When a lua panic occurs outside of the gui.window_run() loop, it may cause the window to not close until the process is closed.
  • Looking for a solution as calling .Close() on an already closed window causes GLFW to break until the process is restarted, and there is no publically exported field to check if a window is active.
• It is currently possible to deadlock in certain circumstances.
  • Calling a function that schedules on a collection item within a function already running for that collection item. e.g. Calling image.size() within the callback of image.map() for the same images.