mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-12-26 09:56:17 +03:00
105 lines
2.3 KiB
C
105 lines
2.3 KiB
C
/*
|
|
* The Python Imaging Library
|
|
* $Id$
|
|
*
|
|
* fill image with constant pixel value
|
|
*
|
|
* history:
|
|
* 95-11-26 fl moved from Imaging.c
|
|
* 96-05-17 fl added radial fill, renamed wedge to linear
|
|
* 98-06-23 fl changed ImageFill signature
|
|
*
|
|
* Copyright (c) Secret Labs AB 1997-98. All rights reserved.
|
|
* Copyright (c) Fredrik Lundh 1995-96.
|
|
*
|
|
* See the README file for information on usage and redistribution.
|
|
*/
|
|
|
|
|
|
#include "Imaging.h"
|
|
|
|
#include "math.h"
|
|
|
|
Imaging
|
|
ImagingFill(Imaging im, const void* colour)
|
|
{
|
|
int x, y;
|
|
ImagingSectionCookie cookie;
|
|
|
|
if (im->type == IMAGING_TYPE_SPECIAL) {
|
|
/* use generic API */
|
|
ImagingAccess access = ImagingAccessNew(im);
|
|
if (access) {
|
|
for (y = 0; y < im->ysize; y++)
|
|
for (x = 0; x < im->xsize; x++)
|
|
access->put_pixel(im, x, y, colour);
|
|
ImagingAccessDelete(im, access);
|
|
} else {
|
|
/* wipe the image */
|
|
for (y = 0; y < im->ysize; y++)
|
|
memset(im->image[y], 0, im->linesize);
|
|
}
|
|
} else {
|
|
INT32 c = 0L;
|
|
ImagingSectionEnter(&cookie);
|
|
memcpy(&c, colour, im->pixelsize);
|
|
if (im->image32 && c != 0L) {
|
|
for (y = 0; y < im->ysize; y++)
|
|
for (x = 0; x < im->xsize; x++)
|
|
im->image32[y][x] = c;
|
|
} else {
|
|
unsigned char cc = (unsigned char) *(UINT8*) colour;
|
|
for (y = 0; y < im->ysize; y++)
|
|
memset(im->image[y], cc, im->linesize);
|
|
}
|
|
ImagingSectionLeave(&cookie);
|
|
}
|
|
|
|
return im;
|
|
}
|
|
|
|
Imaging
|
|
ImagingFillLinearGradient(const char *mode)
|
|
{
|
|
Imaging im;
|
|
int y;
|
|
|
|
if (strlen(mode) != 1)
|
|
return (Imaging) ImagingError_ModeError();
|
|
|
|
im = ImagingNew(mode, 256, 256);
|
|
if (!im)
|
|
return NULL;
|
|
|
|
for (y = 0; y < 256; y++)
|
|
memset(im->image8[y], (unsigned char) y, 256);
|
|
|
|
return im;
|
|
}
|
|
|
|
Imaging
|
|
ImagingFillRadialGradient(const char *mode)
|
|
{
|
|
Imaging im;
|
|
int x, y;
|
|
int d;
|
|
|
|
if (strlen(mode) != 1)
|
|
return (Imaging) ImagingError_ModeError();
|
|
|
|
im = ImagingNew(mode, 256, 256);
|
|
if (!im)
|
|
return NULL;
|
|
|
|
for (y = 0; y < 256; y++)
|
|
for (x = 0; x < 256; x++) {
|
|
d = (int) sqrt((double) ((x-128)*(x-128) + (y-128)*(y-128)) * 2.0);
|
|
if (d >= 255)
|
|
im->image8[y][x] = 255;
|
|
else
|
|
im->image8[y][x] = d;
|
|
}
|
|
|
|
return im;
|
|
}
|