C++ (Cpp) mandel_float Examples

Example #1

File: mandelthr.c Project: vendu/OS-Zero

/* For each point, evaluate its colour */
static void display_float(int width, int height,
                          float xmin, float xmax,
                          float ymin, float ymax, int yofs, int ylim)
{
    int size = width * height;
    int x;
    int y;

    float cr, ci;

    float xscal = (xmax - xmin) / size;
    float yscal = (ymax - ymin) / size;

    unsigned counts;

#if (OPTIMIZED)
    cr = xmin;
    ci = ymin;
#endif
    for (y = yofs; y < ylim; y++)
        {
            for (x = 0; x < width; x++)
                {
#if (!OPTIMIZED)
                    cr = xmin + x * xscal;
                    ci = ymin + y * yscal;
#endif
                    counts = mandel_float(cr, ci);
                    ((unsigned *) g_x11.bitmap->data)[x + y*width] = cols[counts];
#if (OPTIMIZED)
                    cr += xscal;
#endif
                }

            /* Display it line-by-line for speed */
            XPutImage(g_x11.dpy, g_x11.win, g_x11.gc, g_x11.bitmap,
                      0, y, 0, y,
                      width, 1);
#if (OPTIMIZED)
            ci += yscal;
#endif
        }

    XFlush(g_x11.dpy);
}

Example #2

/* For each point, evaluate its colour */
static void display_float(int size, float xmin, float xmax, float ymin, float ymax, int yofs, float ylim)
{
    int x, y;
	
    float cr, ci;

    float xscal = (xmax - xmin) / size;
    float yscal = (ymax - ymin) / size;
	
    unsigned counts;

#if (OPTIMIZED)
    cr = xmin;
    ci = ymin;
#endif
    for (y = yofs; y < ylim; y++)
	{
            for (x = 0; x < size; x++)
		{
#if (!OPTIMIZED)
                    cr = xmin + x * xscal;
                    ci = ymin + y * yscal;
#endif
                    counts = mandel_float(cr, ci);
                    ((unsigned *) bitmap->data)[x + y*size] = cols[counts];
#if (OPTIMIZED)
                    cr += xscal;
#endif
		}

            /* Display it line-by-line for speed */
            XPutImage(dpy, win, gc, bitmap,
                      0, y, 0, y,
                      size, 1);
#if (OPTIMIZED)
            ci += yscal;
#endif
	}
	
    XFlush(dpy);
}