mirror of
https://github.com/python-pillow/Pillow.git
synced 2025-11-04 09:57:43 +03:00
43 lines
715 B
C
43 lines
715 B
C
/*
|
|
* 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 = ImagingNew(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;
|
|
}
|
|
|