glGraph

A 2d Graphing Calculator using Modern OpenGL

Demo

https://user-images.githubusercontent.com/5031736/122145371-1c5d8400-ce23-11eb-9e6e-e537469c06df.mp4

Information

• This has only been tested on Fedora 34, it should work on other OS's but I make no guarantees.
• This uses C++17 features.
• Controls: WASD to move around, QE to zoom

What can it do so far?

• Basic operations (+, -, *, /, ^)
• Order of operations (parentheses, etc)
• Functions: sin, cos, tan, sqrt
• Switch between radians and degrees
• Multiple lines, ability to change line color, and ability to remove lines
• Live equation updating (not shown in example)

Known issues

• floating point precision errors
• functions with undefined values (e.g. divides by 0 or goes to infinity) sometimes display strange behavior
• glLineWidth may not work on some (maybe all) versions of macOS because of limited GL_LINE_WIDTH_RANGE
• invalid character sequences may cause program to crash

Dependencies

• OpenGL 3.3 core
• SDL2
• GLEW
• Dear ImGui