/* Assignment 1 - Duy Nguyen: September 12, 2006
 *  This program draws a grid and allows the user to draw lines and polygons.
 * It handles techniques to draw lines at the pixel level, as well as filling
 * polygons as required.
 *
 *  Just to note, this program uses triangle.c as a template for many of the
 *  Glut functions.
 */

#include <stdio.h>       
#include <stdlib.h>      
#include <string.h> 

/*
// Sometimes glu.h includes glut.h--sometimes not.
*/
#ifdef MAC_OSX
#    include <OpenGL/glu.h>
#    include <GLUT/glut.h>
#else 
#    include <GL/glu.h>       
#    include <GL/glut.h>       
#endif


/* -------------------------------------------------------------------------- */

// Function Declarations
int main(int argc, char *argv[]);
static void display_CB(void);            /* Called whenever redisplay needed */
static void key_CB(unsigned char key, int x, int y);     /* Called on key press */
static void mouse_CB(int button, int state, int x, int y);  /* Called on mouse click */

static void parseFile();
static void saveFile();

/* -------------------------------------------------------------------------- */

// Instance Variable Declarations



/* -------------------------------------------------------------------------- */

int main(int argc, char *argv[])
{
    int win;
    int submenu;


    glutInit(&argc, argv);                /* initialize GLUT system */

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);


    glutInitWindowSize(630, 630); 

    win = glutCreateWindow("Assignment 1");   /* create window */

    /* set background to black */
    glClearColor((GLclampf)0.0,(GLclampf)0.0,(GLclampf)0.0,(GLclampf)0.0);  

    gluOrtho2D(0.0, 630.0, 0.0, 630.0); /* how object is mapped to window */
    glutDisplayFunc(display_CB);        /* set window's display callback */
    glutKeyboardFunc(key_CB);           /* set window's key callback */
    glutMouseFunc(mouse_CB);            /* set window's mouse callback */

    parseFile(); // Read in any predone code

    glutMainLoop();                       /* start processing events... */

    /* Execution never reaches this point, so return value is failure */

    return EXIT_FAILURE;
}

static void parseFile()
{
	if(!isatty(fileno(stdin)))
	{
		char* temp[500];

		while( fgets(temp, 500, stdin) != NULL)
		{

		}
	}
}

static void saveFile()
{
	int i = 0;
	//for(i = 0; i < cmSize; i++)
	{
		
	}
}


/*  /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\   */

/*
// Function called whenever redisplay needed (try hiding the window and then
// exposing it. The debug macro should print something.)
*/
static void display_CB(void)
{

    glClear(GL_COLOR_BUFFER_BIT);         /* clear the display */


    glEnd();           /* OpenGL draws the filled triangle */
    glFlush();         /* Complete any pending operations */

    glutSwapBuffers(); /* Make the drawing buffer the frame buffer 
                          and vice versa */

}

/*  /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\   */

/* Function called on key press */
static void key_CB(unsigned char key, int x, int y) 
{

    	if( key == 'q' ) 
	{
		saveFile();
		exit(0);
	}
}

/*  /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\   */

/* Function called on mouse click */
static void mouse_CB(int button, int state, int x, int y)  
{


}