/* Sequential Mandelbrot program */
//http://www.coe.uncc.edu/~abw/parallel/par_prog/resources/mandelbrot.c
//http://www.coe.uncc.edu/~abw/parallel/par_prog/resources/assign2.html

#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xos.h>
#include <stdio.h>
#include <string.h>
#include <math.h>

#define		X_RESN	800       /* x resolution */
#define		Y_RESN	800       /* y resolution */

typedef struct complextype
{
    float real, imag;
} Compl;

int main ()
{
	Window		win;                          /* initialization for a window */
	unsigned
	int         width, height,                  /* window size */
                x, y,                           /* window position */
                border_width,                   /*border width in pixels */
                display_width, display_height,  /* size of screen */
                screen;                         /* which screen */

	char       *window_name = "Mandelbrot Set", *display_name = NULL;
	char	filename[80];
	GC         gc;
	unsigned long		valuemask = 0;
	XGCValues	values;
	Display		*display;
	XSizeHints	size_hints;
	Pixmap		bitmap;
	XPoint		points[800];
	FILE		*fp, *fopen ();
	char		str[100];

/* FOR THE VERSION OF OPENING THE FILES FOR WRITTEN BY EACH PROCESS IN "PART A", 
  SEE LINE 117 BELOW
*/
/*	fp = fopen("mandelpoints.txt","r");  

	if (fp == NULL) {
		printf("Can't open file\n");
		exit(0);
	}
	printf("Opened file\n");
*/
	XSetWindowAttributes attr[1];

   /* Mandlebrot variables */
        int i, j, k;
        Compl	z, c;
        float	lengthsq, temp;
       
	/* connect to Xserver */

	if (  (display = XOpenDisplay (display_name)) == NULL ) {
	   fprintf (stderr, "drawon: cannot connect to X server %s\n",
				XDisplayName (display_name) );
	   exit (-1);
	}
	
	/* get screen size */

	screen = DefaultScreen (display);
	display_width = DisplayWidth (display, screen);
	display_height = DisplayHeight (display, screen);

	/* set window size */

	width = X_RESN;
	height = Y_RESN;

	/* set window position */

	x = 0;
	y = 0;

   /* create opaque window */

	border_width = 4;
	win = XCreateSimpleWindow (display, RootWindow (display, screen),
				x, y, width, height, border_width, 
				BlackPixel (display, screen), WhitePixel (display, screen));

	size_hints.flags = USPosition|USSize;
	size_hints.x = x;
	size_hints.y = y;
	size_hints.width = width;
	size_hints.height = height;
	size_hints.min_width = 300;
	size_hints.min_height = 300;
	
	XSetNormalHints (display, win, &size_hints);
	XStoreName(display, win, window_name);

        /* create graphics context */

	gc = XCreateGC (display, win, valuemask, &values);

	XSetBackground (display, gc, WhitePixel (display, screen));
	XSetForeground (display, gc, BlackPixel (display, screen));
	XSetLineAttributes (display, gc, 1, LineSolid, CapRound, JoinRound);

	attr[0].backing_store = Always;
	attr[0].backing_planes = 1;
	attr[0].backing_pixel = BlackPixel(display, screen);

    XChangeWindowAttributes(display, win, 
			 CWBackingStore | CWBackingPlanes | CWBackingPixel, attr);

	XMapWindow (display, win);
	XSync(display, 0);
/*
USE THIS CODE TO READ IN DATA FROM EACH FILE GENERATED IN THE PARALLEL
"PART A" VERSION:
	for(rank=0; rank<size; rank++) {
		sprintf(filename, "mandelpoints%d.txt", rank);
		fp = fopen(filename,"r");  
		if (fp == NULL) {
			printf("Can't open file\n");
			exit(0);
		}
		printf("Opened file\n");
		printf("Reading the file...\n");
		while (fscanf(fp,"%d %d", &j, &i) != EOF) {      	 
			XDrawPoint (display, win, gc, j, i);
			printf("%d %d\n", i, j); 
		}
		printf("Done reading\n");
		fclose(fp);  
	}
*/
	printf("Reading the file...\n");
	while (fscanf(fp,"%d %d", &j, &i) != EOF) {      	 
			XDrawPoint (display, win, gc, j, i);
			printf("%d %d\n", i, j); 
	}
	printf("Done reading\n");
	fclose(fp);  
	XFlush (display);
	sleep (30);
	/* Program Finished */

	return 0;
}