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rotate 90 and 270 by chunks

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This commit is contained in:
homm 2014-11-07 04:15:18 +03:00
parent a960d440db
commit cfa20f1004
1 changed files with 29 additions and 13 deletions
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42
libImaging/Geometry.c
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@ -98,7 +98,8 @@ Imaging
ImagingRotate90(Imaging imOut, Imaging imIn)
{
ImagingSectionCookie cookie;
int x, y, xr;
int x, y, xx, yy, xr, xxsize, yysize;
int size = 128;
if (!imOut || !imIn || strcmp(imIn->mode, imOut->mode) != 0)
return (Imaging) ImagingError_ModeError();
@ -107,11 +108,18 @@ ImagingRotate90(Imaging imOut, Imaging imIn)
ImagingCopyInfo(imOut, imIn);
#define ROTATE_90(image)\
for (y = 0; y < imIn->ysize; y++) {\
xr = imIn->xsize-1;\
for (x = 0; x < imIn->xsize; x++, xr--)\
imOut->image[xr][y] = imIn->image[y][x];\
#define ROTATE_90(image) \
for (y = 0; y < imIn->ysize; y += size) { \
for (x = 0; x < imIn->xsize; x += size) { \
yysize = y + size < imIn->ysize ? y + size : imIn->ysize; \
xxsize = x + size < imIn->xsize ? x + size : imIn->xsize; \
for (yy = y; yy < yysize; yy++) { \
xr = imIn->xsize - 1 - x; \
for (xx = x; xx < xxsize; xx++, xr--) { \
imOut->image[xr][yy] = imIn->image[yy][xx]; \
} \
} \
} \
}
ImagingSectionEnter(&cookie);
@ -204,7 +212,8 @@ Imaging
ImagingRotate270(Imaging imOut, Imaging imIn)
{
ImagingSectionCookie cookie;
int x, y, yr;
int x, y, xx, yy, yr, xxsize, yysize;
int size = 128;
if (!imOut || !imIn || strcmp(imIn->mode, imOut->mode) != 0)
return (Imaging) ImagingError_ModeError();
@ -213,12 +222,19 @@ ImagingRotate270(Imaging imOut, Imaging imIn)
ImagingCopyInfo(imOut, imIn);
yr = imIn->ysize - 1;
#define ROTATE_270(image)\
for (y = 0; y < imIn->ysize; y++, yr--)\
for (x = 0; x < imIn->xsize; x++)\
imOut->image[x][y] = imIn->image[yr][x];
#define ROTATE_270(image) \
for (y = 0; y < imIn->ysize; y += size) { \
for (x = 0; x < imIn->xsize; x += size) { \
yysize = y + size < imIn->ysize ? y + size : imIn->ysize; \
xxsize = x + size < imIn->xsize ? x + size : imIn->xsize; \
yr = imIn->ysize - 1 - y; \
for (yy = y; yy < yysize; yy++, yr--) { \
for (xx = x; xx < xxsize; xx++) { \
imOut->image[xx][yr] = imIn->image[yy][xx]; \
} \
} \
} \
}
ImagingSectionEnter(&cookie);