Code Writeup Quarter 1
int main(int argc, const char* argv)
Is responsible for setting up the environment for the program to run. It creates the particle swarm,
calculates the random position of the cornfield, and initializes OpenGL.
OpenGL method. Is responsible for updating the program. It will be called as the OpenGL idle
function, and will increment the swarm(moving and recalculating fitness values), and redisplay the
program in the window. The function is timed in a while loop near the end of the function until a certain
amount of time has passed(calculated by clock speed).
OpenGL method. Displays the program graphically on the screen by means of OpenGL.
Currently both particles and cornfield are shown as squares. This method also draws the current gbest
position on the field, signified by a blue square.
void keyboard(unsigned char key, int x, int y)
OpenGL method. This method takes input from the keyboard and uses it to perform one of the
following functions: reset, resume, stop, step. It is also responsible for changing the type of social
interactions between agents, via buttons 1, 2, and 3.
void initalizeOpenGL(int argc, char** argv)
OpenGL method. This method sets up the OpenGL enviroment and sets runningfunction() as
double fitness(double pos)
Takes the position of the particle and determines the distance between it and the cornfield. The
returned double is the negative of this distance.
void calculateFitness(particle* swarm, int numOfAgents, double **gbest, double(*fit)(double pos))
Given the swarm, the method iterates though the members and updates the fitness values of the
particles, via the fit argument. If the particle has a greater fitness value than its pbest, its pbest is updated.
If the particle has a greater fitness value than the group's gbest, it too is updated.
void initalizeSwarm(particle* swarm, int numOfAgents, int size)
Creates the swarm by giving all the agents a ra