#include <iostream>
#include <ctime>
#include <GL/glut.h>
#include <string>
using namespace std;

int points = 3, noShapes = 2, noPoints;
double * red, * green, * blue;
int * x, * y, * state;
string shape;
double WIDTH = 400, HEIGHT = 400;
double HMIN = -WIDTH/2, HMAX = WIDTH/2, KMIN = -HEIGHT/2, KMAX = HEIGHT/2;
double startTime = 0;

void drawString (GLfloat x, GLfloat y, void *font, string s) 
{
	glRasterPos3f (x, y, 0);
	for (int i = 0; i < (signed int)s.length(); i++) 
	{
		glutBitmapCharacter (font, s[i]);
	}
}

void display () 
{
	glClear(GL_COLOR_BUFFER_BIT);
	
	int n = noShapes;
	for (int i = 0; i < n * points; i = i + points) 
	{
		glPushMatrix();
		glTranslatef(HMIN + i * (HMAX - HMIN) / n, KMAX - i * (KMAX - KMIN) / n, 0);
		glRotatef (i * 360.0 / n, 0, 0, 1);
	
		if(points == 3)
		{
			glBegin (GL_TRIANGLES);
			glColor3f (red[0], green[0], blue[0]);
			glVertex3f (x[0], y[0], 0);
			glColor3f (red[1], green[1], blue[1]);
			glVertex3f (x[1], y[1], 0);
			glColor3f (red[2], green[2], blue[2]);
			glVertex3f (x[2], y[2], 0);
			glEnd ();
			glPopMatrix ();			
		}
		else
		{
			glBegin (GL_QUADS);
			glColor3f (red[0], green[0], blue[0]);
			glVertex3f (x[0], y[0], 0);
			glColor3f (red[1], green[1], blue[1]);
			glVertex3f (x[1], y[1], 0);
			glColor3f (red[2], green[2], blue[2]);
			glVertex3f (x[2], y[2], 0);
			glColor3f (red[3], green[3], blue[3]);
			glVertex3f (x[3], y[3], 0);
			glEnd ();
			glPopMatrix ();
		}
	}
	glColor3f(red[0], green[1], blue[2]);
	string s = "wow, the colors!";
	drawString(0, 60, GLUT_BITMAP_HELVETICA_18, s);
	glutSwapBuffers ();
		
	glutPostRedisplay ();

}

//void motion(int x, int y)
//{
	

//}

void idle()
{
	if (clock () - startTime >= 10)
	{
		startTime = clock();
		for(int i = 0; i < points; i++)
		{
			switch(state[i])
			{
				case 0:
					y[i]++;
					if(y[i] == 50)
					{
						state[i] = 1;
					}
					cout<<"point "<<i+1<<" is in state 0.\n";
				break;

				case 1:
					x[i]++;
					if(x[i] == 50)
					{
						state[i] = 2;
					}
					cout<<"point "<<i+1<<" is in state 1.\n";
				break;

				case 2:
					y[i]--;
					if(y[i] == 0)
					{
						state[i] = 3;
					}
					cout<<"point "<<i+1<<" is in state 2.\n";
				break;

				case 3:
					x[i]--;
					if(x[i] == 0)
					{
						state[i] = 0;
					}
					cout<<"point "<<i+1<<" is in state 3.\n";
				break;	
			}		

			cout<<"x["<<i<<"] is at "<<x[i]<<".\n";
			cout<<"y["<<i<<"] is at "<<y[i]<<".\n";
		}
		cout<<endl;

		
	}
	glutPostRedisplay();
}

void mouse(int button, int state, int x, int y)
{
	double X = x * (HMAX - HMIN) / (WIDTH + HMIN);
	double Y = (HEIGHT - y) * (KMAX - KMIN) / (HEIGHT + KMIN);
	
	switch(button)
	{
		case GLUT_LEFT_BUTTON:
			switch (state)
			{
				case GLUT_DOWN:		
					glRotatef(5, 0, 0, 1);	
				break;

				case GLUT_UP:
				
				break;
			}
		break;

		case GLUT_MIDDLE_BUTTON:
			switch (state)
			{
				case GLUT_DOWN:
					glScalef(2, .5, 1);
				break;
				case GLUT_UP:
				
				break;
			}
		break;

		case GLUT_RIGHT_BUTTON:
			switch (state)
			{
				case GLUT_DOWN:
					glRotatef(-5, 0, 0, 1);		
				break;
				case GLUT_UP:
				
				break;
			}
		break;
	}

	glutPostRedisplay();
}

void special (int key, int x, int y)
{
	if (key == GLUT_KEY_UP)
	{
		glTranslatef(0, 10, 0);
	}
	else if (key == GLUT_KEY_DOWN)
	{
		glTranslatef(0, -10, 0);
	}
	else if (key == GLUT_KEY_RIGHT)
	{
		glTranslatef(10, 0, 0);
	}	
	else if (key == GLUT_KEY_LEFT)
	{
		glTranslatef(-10, 0, 0);	
	}	
	glutPostRedisplay();
}

void keyboard (unsigned char key, int x, int y) 
{
	if (key == 27) exit (0); 
	
	double X = x * (HMAX - HMIN) / WIDTH + HMIN;
	double Y = (HEIGHT - y) * (KMAX - KMIN) / HEIGHT + KMIN;
	string s = " ";
	s[0] = key;
	drawString (X, Y, GLUT_BITMAP_HELVETICA_18, s);
	glutPostRedisplay ();
}
void main (int argc, char** argv)
{
	startTime = clock();

	cout<<"will you be drawing triangles or squares?\n";	
	do	
	{
		cin>>shape;
		if(shape == "triangles")
		{
			points = 3;
			x = new int[3];
			y = new int[3];
			x[0] = 0;
			y[0] = 0;
			x[1] = 0;
			y[1] = 50;
			x[2] = 50;
			y[2] = 0;

			state = new int [3];
			state[0] = 0;
			state[1] = 1;
			state[2] = 3;
			
		}
		else if(shape == "squares")
		{
			points = 4;
			x = new int[4];
			y = new int[4];	
			x[0] = 0;
			x[1] = 50;
			x[2] = 50;
			x[3] = 0;
            y[0] = 0;
			y[1] = 0;
			y[2] = 50;
			y[3] = 50;

			/*state = new int [4];
			for (int i = 0; i < 4; i++)
			{
				state[i] = i;
			}*/
		}
		else
		{
			cout<<"invalid.  Please re-enter\n";
		}
	}while(shape != "triangles" && shape != "squares");
	cout<<"how many shapes will you draw?\n";
	cin>>noShapes;
	noPoints = noShapes * points;
	red = new double [points];
	green = new double [points];
	blue = new double [points];
	for (int i = 0; i < points; i++)
	{
		
	}
	for (int i = 0; i < points; i++)
	{
		cout<<"enter the red value for point "<<i+1<<" (between 0 and 1).\n";
		cin>>red[i];
		cout<<"enter the green value for point "<<i+1<<" (between 0 and 1).\n";
		cin>>green[i];
		cout<<"enter the blue value for point "<<i+1<<" (between 0 and 1).\n";
		cin>>blue[i];
	}	
	glutInit (&argc, argv);
	glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB);
	glutInitWindowSize (WIDTH, HEIGHT);
	glutInitWindowPosition (100, 100);
	glutCreateWindow ("Chris's Final Project");
	glClearColor (0, 0, 0, 0);
	glMatrixMode (GL_MODELVIEW);
	glOrtho(HMIN, HMAX, KMIN, KMAX, -1, 1);
	glClear (GL_COLOR_BUFFER_BIT);
	glutKeyboardFunc (keyboard);
	glutMouseFunc(mouse);
	glutDisplayFunc (display);
	glutSpecialFunc(special);
	glutIdleFunc(idle);
	//glutMotionFunc(motion);	 
	//glutPassiveMotionFunc();								
	glutMainLoop ();

	return;
}