hellotext
Rendering text in OpenGL using FreeType! The hellotext.cpp file is the entry of the application, it setups the application logic for the user. The project is split into two parts, the application and the library. The application contains the code for business logic, handling user data and storing different logic for user interaction. The library provides the application developer to interact with the computer on higher level, reading fonts, rendering it to window and drawing shapes. When using the built in renderer and its text engine it will batch the draw calls.
Requirements
Build
Use command below to generate build system. The cmake script will automatically download the dependencies.
cmake -S . -BbuildBuild Emscripten
Generate build system using emscripten/emsdk docker image. The docker command can be omitted if emsdk is installed. Just use build_em.sh script to generate the build system and compile the code.
docker run -it --rm -v "$(pwd):/src" emscripten/emsdk ./build_em.shThe build_em.sh will generate the build script inside build-web directory in the project root directory.
Text Rendering
The application uses FreeType 2 to read most font file types, ttf (TrueTypeFont) and otf (OpenTypeFont) and OpenGL as its backend to render it to screen. For window creation GLFW library is used as window abstraction layer for the desktop version. On the emscripten platform the native HTML5 DOM API from emscripten is used to create WebGL 2.0 context and event registrations.