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/*====================================================================*
- 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.
*====================================================================*/
/*
* falsecolortest.c
*/
#include <stdio.h>
#include <stdlib.h>
#include "allheaders.h"
#define DEPTH 16 /* set to either 8 or 16 */
#define WIDTH 768
#define HEIGHT 100
main(int argc,
char **argv)
{
PIX *pixs, *pixd, *pixt;
l_int32 i, j, maxval, val;
l_float32 gamma;
static char mainName[] = "falsecolortest";
if (argc != 2)
exit(ERROR_INT(" Syntax: falsecolortest gamma", mainName, 1));
gamma = atof(argv[1]);
maxval = 0xff;
if (DEPTH == 16)
maxval = 0xffff;
pixs = pixCreate(WIDTH, HEIGHT, DEPTH);
for (i = 0; i < HEIGHT; i++) {
for (j = 0; j < WIDTH; j++) {
val = maxval * j / WIDTH;
pixSetPixel(pixs, j, i, val);
}
}
fprintf(stderr, "before depth = %d\n", pixGetDepth(pixs));
pixWrite("junkout16", pixs, IFF_PNG);
pixt = pixRead("junkout16");
pixWrite("junkoutafter", pixt, IFF_PNG);
fprintf(stderr, "after depth = %d\n", pixGetDepth(pixt));
pixd = pixConvertGrayToFalseColor(pixt, gamma);
pixDisplay(pixd, 50, 50);
pixWrite("junkout", pixd, IFF_PNG);
pixDestroy(&pixs);
pixDestroy(&pixt);
pixDestroy(&pixd);
exit(0);
}
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