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/*
* 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 = ImagingNewDirty(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 = ImagingNewDirty(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;
}
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