Zagreb C++ Meetup 2020-01-16

This repository contains code samples and presentation slides shown during C++ meetup on January 16th, 2020.

Slides are created with markdown and compiled to HTML using Marpit.

Presentation video (click the image to open video on youtube):

Cloning notes

This repository contains some files on LFS, so make sure that you have Git LFS support installed prior cloning this repository. Without this, code examples will not work.

Code example

Live demo of the example

Live demo of the example is available on this link

Building and running the example

You will need CMake, Ninja and Conan installed on your computer and available in your PATH. If running on windows, please use a bash shell.

1. Run the bootstrap-emscripten-conan.sh script - it will setup your conan environment for development with emscripten, download the Emscripten conan package and generate an activate.sh shell script that will setup your shell for emscripten development (similar to how python virtualenv works).

2. Activate the Emscripten environment

   source ./activate.sh

3. Create and enter an empty build directory

   mkdir build && cd build

4. Initialize the cmake build directory

   ecmake -DCMAKE_BUILD_TYPE=Release ..

5. Build the code

   ninja

   or

   cmake --build .

6. Serve the bin directory with simple HTTP server.

   python3 -m http.server --directory ./bin 8080

7. Navigate your browser to http://localhost:8080 and allow camera access.

8. Note: The camera access will work only on localhost. If you want other users to have access to the camera, you will need to serve the directory via HTTPS, as most browsers do not allow camera access for non-secure contexts.