/***********************************************
*	MandzoomGen3.c
*
*  Generates a RAW format file of an image 
*  of a Generalized Mandelbrot set (grayscale)
*
*  C source file by Alberto Strumia
*
************************************************/


#include<stdio.h>

/* definition of constants */
#define Radius 10
#define Cx -0.5720
#define Cy 0.069
#define Side 0.05
#define M 700
#define Num 1024
/* Alternative values Side 0.0005 , 0.00005 */

/* main program */
main()
{
	
	int p, q, n, w;
	double x, y, xx, yy, Incx, Incy;
	

	FILE *fp;
	fp = fopen("Mand.raw","w");
	
	for (p = 1; p <= M; p++)
	{
		Incy = Cy - Side + 2*Side/M*p;
		
			printf("%i %%\n", p*100/M);
		
		for (q = 1; q <= M; q++)
		{
			Incx = Cx - Side + 2*Side/M*q;
			
		x = 0;
		y = 0;
		w = 200;

			for ( n = 1; n <= Num; ++n)
			{
				xx = (x*x - y*y)*(x*x - y*y) - 4*x*x*y*y - Incx;
				yy = 4*x*y*(x*x - y*y) - Incy;
				
				x = xx;
				y = yy;
				
				if ( x*x + y*y > Radius )
					{
						w = n;
						n = Num;
					}
			}
		fprintf(fp, "%c", w/4 );
		}
	}
	
	fclose(fp);	

/* end of main program */