This is a little engine that makes maths vidoes. especially for visualisations of my school project's things.

Rendar makes videos from code. You write C++ code that draws stuff, and it makes a video out of it. It uses FFMPEG to encode the video.

You need these things:

• CMake: sudo apt install cmake
• FFMPEG: sudo apt install ffmpeg libswscale-dev libavcodec-dev libavformat-dev libavdevice-dev libavutil-dev libavfilter-dev
• CUDA (optional, for faster rendering)
• gnuplot: sudo apt install gnuplot
• GLM: sudo apt install libglm-dev
• MicroTeX: https://github.com/NanoMichael/MicroTeX/ (put it next to this folder and then compile it to get MicroTex-master/builds/LaTex or smth like this)
• RSVG and GLib: sudo apt install librsvg2-dev libglib2.0-dev
• Cairo: sudo apt install libcairo2-dev
• LibPNG: sudo apt install libpng-dev

1. Make a file in src/Projects/yourproject.cpp
2. Run: ./go.sh yourproject 640 360

That's it. The video goes in out/yourproject/.

• src/ - the code
• out/ - videos go here
• media/ - put your audio files here
• build/ - build files

The program splits videos into chunks called macroblocks (audio chunks) and microblocks (visual chunks). You tell it how many microblocks each macroblock has, then it renders each one.

Example:

scene.stage_macroblock(FileBlock("myaudio"), 3); // 3 microblocks
scene.render_microblock(); // render 1
scene.render_microblock(); // render 2  
scene.render_microblock(); // render 3

If you mess up the count, it crashes.

Run with -s to test without making video: ./go.sh yourproject 640 360 -s

This just checks if your code works.