Andrew Gazelka's CSCI5607 Project

Executable compiled for MacOS Big Sur

Example usage

Action	Effect
Pressing `r`	Resets orientation
Pressing `b`	Toggles shape (btwn square and triangle)
Dragging on edge	Rotates shape
Dragging on corner	Expands/Contracts shape
Dragging on corner	Expands/Contracts shape

Difficulties

The project was rather straight-forward. However, I did encounter a couple of difficulties.

Setting up CMake

First, I wanted to setup the project with CMake and my brew-installed SDL-2. I am not super familiar with CMake, but I eventually figured out how to reference SDL-2 without giving an absolute path with the find_package(SDL2 REQUIRED) command.

SDL headers

Still, I could not get the project to compile because the #include <SDL2/SDL.h> header is not a universal import for SDL and did not work on MacOS. Instead I had to change it to #include "SDL.h".

inline functions

I didn't want all of my code in the same file. Several of the library functions were defined in header files and some did not have the inline keyword which led to linking errors. To fix this, I needed to add the inline keyword to prevent the compiler thinking there were multiple definitions.

Extensions

✅ Animating the square
✅ Changing something visually when the user presses the keyboard
✅ Supporting a triangle in addition to a square

Code

Compiling

mkdir build
cd build
cmake ..

Running

Execute the compiled binary. Make sure that face.ppm is in the current working directory.

andrewgazelka/PGA-Tests