blendtest1.c

Go to the documentation of this file.

/*====================================================================*
 -  Copyright (C) 2001 Leptonica.  All rights reserved.
 -  This software is distributed in the hope that it will be
 -  useful, but with NO WARRANTY OF ANY KIND.
 -  No author or distributor accepts responsibility to anyone for the
 -  consequences of using this software, or for whether it serves any
 -  particular purpose or works at all, unless he or she says so in
 -  writing.  Everyone is granted permission to copy, modify and
 -  redistribute this source code, for commercial or non-commercial
 -  purposes, with the following restrictions: (1) the origin of this
 -  source code must not be misrepresented; (2) modified versions must
 -  be plainly marked as such; and (3) this notice may not be removed
 -  or altered from any source or modified source distribution.
 *====================================================================*/

/*
 * blendtest1.c
 *
 *     fract must be in interval [0.0, 1.0]
 */

#include <stdio.h>
#include <stdlib.h>
#include "allheaders.h"

#define   X     140 
#define   Y     40 


main(int    argc,
     char **argv)
{
char        *file1, *file2, *fileout;
l_int32      d;
l_float32    fract;
PIX         *pixs1, *pixs2, *pixt1, *pixt2, *pixt3, *pixt4, *pixd;
static char  mainName[] = "blendtest1";

    if (argc != 5)
        exit(ERROR_INT(" Syntax:  blendtest1 file1 file2 fract fileout",
            mainName, 1));

    file1 = argv[1];
    file2 = argv[2];
    fract = atof(argv[3]);
    fileout = argv[4];

    if ((pixs1 = pixRead(file1)) == NULL)
        exit(ERROR_INT("pixs1 not made", mainName, 1));
    if ((pixs2 = pixRead(file2)) == NULL)
        exit(ERROR_INT("pixs2 not made", mainName, 1));

#if 0
    d = pixGetDepth(pixs2);
    if (d == 1) {
        pixt1 = pixBlend(pixs1, pixs2, X, Y, fract);
        pixt2 = pixBlend(pixt1, pixs2, X, Y + 60, fract);
        pixt3 = pixBlend(pixt2, pixs2, X, Y + 120, fract);
        pixt4 = pixBlend(pixt3, pixs2, X, Y + 180, fract);
        pixt5 = pixBlend(pixt4, pixs2, X, Y + 240, fract);
        pixd = pixBlend(pixt5, pixs2, X, Y + 300, fract);
        pixWrite(fileout, pixd, IFF_DEFAULT);
        pixDestroy(&pixt1);
        pixDestroy(&pixt2);
        pixDestroy(&pixt3);
        pixDestroy(&pixt4);
        pixDestroy(&pixt5);
    }
    else {
        pixt1 = pixBlend(pixs1, pixs2, X, Y, fract);
        pixt2 = pixBlend(pixt1, pixs2, X + 80, Y + 80, fract);
        pixt3 = pixBlend(pixt2, pixs2, X + 160, Y + 160, fract);
        pixt4 = pixBlend(pixt3, pixs2, X + 240, Y + 240, fract);
        pixt5 = pixBlend(pixt4, pixs2, X + 320, Y + 320, fract);
        pixd = pixBlend(pixt5, pixs2, X + 360, Y + 360, fract);
        pixWrite(fileout, pixd, IFF_DEFAULT);
        pixDestroy(&pixt1);
        pixDestroy(&pixt2);
        pixDestroy(&pixt3);
        pixDestroy(&pixt4);
        pixDestroy(&pixt5);
    }
    pixDestroy(&pixd);
#endif

#if 1  /* e.g., weasel8.png with fract = 0.3 */
    pixSnapColor(pixs2, pixs2, 0xff, 0xff, 50);
    pixBlendGray(pixs1, pixs1, pixs2, 200, 100, fract,
                 L_BLEND_GRAY, 1, 0xff);
    pixBlendGray(pixs1, pixs1, pixs2, 200, 200, fract,
                 L_BLEND_GRAY, 1, 0xff);
    pixBlendGray(pixs1, pixs1, pixs2, 200, 260, fract,
                 L_BLEND_GRAY, 1, 0xff);
    pixBlendGray(pixs1, pixs1, pixs2, 200, 340, fract,
                 L_BLEND_GRAY, 1, 0xff);
    pixWrite(fileout, pixs1, IFF_JFIF_JPEG);
    pixDisplay(pixs1, 200, 200);
#endif

#if 0  /* e.g., weasel8.png with fract = 0.5 */
    pixSnapColor(pixs2, pixs2, 0xff, 0xff, 50);
    pixBlendGray(pixs1, pixs1, pixs2, 200, 100, fract,
                 L_BLEND_GRAY_WITH_INVERSE, 1, 0xff);
    pixBlendGray(pixs1, pixs1, pixs2, 200, 200, fract,
                 L_BLEND_GRAY_WITH_INVERSE, 1, 0xff);
    pixBlendGray(pixs1, pixs1, pixs2, 200, 260, fract,
                 L_BLEND_GRAY_WITH_INVERSE, 1, 0xff);
    pixBlendGray(pixs1, pixs1, pixs2, 200, 340, fract,
                 L_BLEND_GRAY_WITH_INVERSE, 1, 0xff);
    pixWrite(fileout, pixs1, IFF_JFIF_JPEG);
    pixDisplay(pixs1, 200, 200);
#endif

#if 0  /* e.g., weasel32.png with fract = 0.2 */
    pixSnapColor(pixs2, pixs2, 0xffffff00, 0xffffff00, 50);
    pixBlendColor(pixs1, pixs1, pixs2, 200, 100, fract, 1, 0xffffff00);
    pixBlendColor(pixs1, pixs1, pixs2, 200, 200, fract, 1, 0xffffff00);
    pixBlendColor(pixs1, pixs1, pixs2, 200, 260, fract, 1, 0xffffff00);
    pixBlendColor(pixs1, pixs1, pixs2, 200, 340, fract, 1, 0xffffff00);
    pixWrite(fileout, pixs1, IFF_JFIF_JPEG);
    pixDisplay(pixs1, 200, 200);
#endif

    pixDestroy(&pixs1);
    pixDestroy(&pixs2);

    exit(0);
}