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GLSphere

OpenGL application that renders a sphere in a skybox using football related textures. The sphere is generated using quads split vertical stacks and horizontal sectors, the number of which can be controlled by command-line arguments.

Keyboard arrows can be used to move the camera, and the mouse can be used to look around. The position of the camera, along with the FPS, is displayed at the bottom left of the screen.

Some basic phong shading is done, but there are no more advanced techniques like shadows.

GLSphere

Usage

Usage: ./glsphere
OpenGL implementation of a sphere in a skybox.
Use arrow keys to move camera and mouse to look around. Press escape key to exit.
Options:
	-h, --help		Show this help message
	--stacks N 		Number of stacks in sphere, defaults to 18
	--sectors N 	Number of sectors in sphere, defaults to 36

Building

The project has only been tested building on Ubuntu 24.04

The external directory contains the following dependencies as git submodules which are built as part of the project:

  • freetype
  • stb
  • glew
  • glfw
  • glm
$ cd <path/to/source>
$ cmake -S . B build
$ cmake --build build
$ ./build/glsphere

Debug

A Debug build of CMake enables OpenGL callback error reporting, which is directed to standard error.

References

Resources I used to help me develop the application