Graphics engine

The program is an OpenGL engine based on the articles by Joey de Vries in https://learnopengl.com/ under the terms of the CC BY-NC 4.0.

It is used for my personal experimentations on computer graphics, shaders and rendering.

Features

• Data-driven scenes from JSON files
• Scene cycling via assets/scenes/scene_config.json
• Object behaviors (None, Oscillate, Spin, Fly)
• Scripted camera routes with keyframes (position + lookAt)
• Material/shader selection per object
• Runtime asset sync to build/assets

Dependencies

• CMake (3.10+)
• C++17 compiler
• OpenGL
• GLFW3
• GLM
• FreeType
• nlohmann/json

Build

mkdir build
cd build
cmake ..
cmake --build .

Run

./build/OpenGLEngine

Controls

• W/A/S/D: move camera on horizontal plane
• Q/E: move camera down/up
• Mouse: look around
• Mouse wheel: zoom
• C: toggle scripted/manual camera mode (when keyframes exist)
• ESC: quit

Scene Configuration

• Scene registry and cycle: assets/scenes/scene_config.json
• Scene files: assets/scenes/basic.scene.json, assets/scenes/alternate.scene.json
• Shaders: assets/shaders/
• Meshes: assets/meshes/

Asset Loading Notes

• The executable loads scene JSON, shader files, and mesh files at runtime.
• Build copies assets into build/assets automatically (copy_assets target).
• Because runtime file IO is used, the executable currently expects assets to be present next to the build output.