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/*
* The Python Imaging Library
* $Id$
*
* negate image
*
* to do:
* FIXME: Maybe this should be implemented using ImagingPoint()
*
* history:
* 95-11-27 fl: Created
*
* Copyright (c) Fredrik Lundh 1995.
* Copyright (c) Secret Labs AB 1997.
*
* See the README file for information on usage and redistribution.
*/
#include "Imaging.h"
Imaging
ImagingNegative(Imaging im) {
Imaging imOut;
int x, y;
if (!im) {
return (Imaging)ImagingError_ModeError();
}
imOut = ImagingNewDirty(im->mode, im->xsize, im->ysize);
if (!imOut) {
return NULL;
}
for (y = 0; y < im->ysize; y++) {
for (x = 0; x < im->linesize; x++) {
imOut->image[y][x] = ~im->image[y][x];
}
}
return imOut;
}
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