libtthimage/Lib/zoom.c

/*
                Zooms sur les images
		--------------------
	new 31 janvier 2009 - avenue Saint Exupery
*/

#include  <stdio.h>
#include  <string.h>
#include  <stdlib.h>
#include  <math.h>
#include  "../tthimage.h"

/*::------------------------------------------------------------------::*/
/*		private variables					*/
/*::------------------------------------------------------------------::*/
/*		private functions					*/
/*::------------------------------------------------------------------::*/
int Image_essai_zoom(Image_Desc *src, Image_Desc *dst,
				double kx, double ky, int flags)
{
int		xd, yd, xs, ys;
int		rd, gd, bd;
double		dxs, dys;		/* destination float position */
#if DEBUG_LEVEL
long		hit, mess;
#endif

#if DEBUG_LEVEL
fprintf(stderr, "%s : %p -> %p      %f %f   0x%x\n", __func__,
			src, dst,  kx, ky, flags);
#endif

/* initilaisation de variables de debug/comptage */
#if DEBUG_LEVEL
hit = mess = 0L;
#endif

for (xd=0; xd<dst->width; xd++)
	{
	dxs = (double)xd * kx;
	for (yd=0; yd<dst->height; yd++)
		{
		rd = gd = bd = 42;

		dys = (double)yd * ky;		/* kikoo lol */
		xs = (int)dxs;
		ys = (int)dys;

		if ( Image_xy_inside(src, xs, ys) )
			{
			Image_getRGB(src, xs, ys, &rd, &gd, &bd);
#if DEBUG_LEVEL
			hit++;
#endif			
			}
#if DEBUG_LEVEL
		else mess++;
#endif
		Image_plotRGB(dst, xd, yd, rd, gd, bd);
		}
	}

#if DEBUG_LEVEL
fprintf(stderr, "%s -> hit=%ld mess=%ld\n", __func__, hit, mess);
#endif

return BAD_ZOOM;
}
/*::------------------------------------------------------------------::*/
int Image_zoom_000(Image_Desc *src, Image_Desc *dst, Image_Rect *rect)
{
int	xd, yd, r, g, b;
double	fxd, fyd;

#if DEBUG_LEVEL
fprintf(stderr, "%s ( %p %p %p )\n", __func__, src, dst, rect);
#endif

for (yd=0; yd<dst->height; yd++)
	{
	fyd = (double)yd;
	for (xd=0; xd<dst->height; xd++)
		{
		fxd = (double)xd;

		}
	}

return FULL_NUCKED;
}
/*::------------------------------------------------------------------::*/