A reimplementation of The Binding of Isaac: Rebirth's proprietary animation editor. Manipulates the XML-based ".anm2" format, used for in-game tweened animations.

Features

Extended version of the original proprietary Nicalis animation editor
Smooth Dear ImGui interface; docking, dragging and dropping, etc.
New features
- Can output .webm or *.png sequence
- Cutting, copying and pasting
- Additional wizard options
- Robust snapshot (undo/redo) system
- Additional hotkeys/shortcuts
- Settings that will preserve on exit (stored in %APPDATA% on Windows or ~/.local/share on Linux)

Dependencies

Download these from your package manager:

SDL3

Note, to render animations, you'll need to download FFmpeg and specify its install path in the program.

Build

Windows

Visual Studio is recommended; make sure your installation has "Desktop development with C++" and ".NET desktop development" workloads.

Install and configure vcpkg.

Build should be straightforward from there.

Linux

After cloning and enter the repository's directory, make sure to initialize the submodules:

git submodule update --init

Then:

mkdir build
cd build
cmake ..
make