python-pillow/Pillow
1
1
Fork 0
mirror of https://github.com/python-pillow/Pillow.git synced 2025-06-09 15:43:18 +03:00
Code Issues Packages Projects Releases Wiki Activity

rename temp to imTransposed

Browse Source 
actualize comments
This commit is contained in:
homm 2014-10-30 14:48:15 +03:00
parent c99f05cd6e
commit 4007a78d53
1 changed files with 15 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
libImaging/BoxBlur.c
View File

@ -169,7 +169,7 @@ ImagingLineBoxBlur8(UINT8 *lineOut, UINT8 *lineIn, int lastx, int radius, int ed
Imaging Imaging
HorizontalBoxBlur(Imaging imOut, Imaging imIn, float floatRadius) ImagingHorizontalBoxBlur(Imaging imOut, Imaging imIn, float floatRadius)
{ {
ImagingSectionCookie cookie; ImagingSectionCookie cookie;
@ -260,28 +260,28 @@ ImagingBoxBlur(Imaging imOut, Imaging imIn, float radius, int n)
strcmp(imIn->mode, "LA") == 0)) strcmp(imIn->mode, "LA") == 0))
return ImagingError_ModeError(); return ImagingError_ModeError();
/* Create transposed temp image (imIn->ysize x imIn->xsize). */ Imaging imTransposed = ImagingNew(imIn->mode, imIn->ysize, imIn->xsize);
Imaging temp = ImagingNew(imIn->mode, imIn->ysize, imIn->xsize); if (!imTransposed)
if (!temp)
return NULL; return NULL;
/* Apply one-dimensional blur. /* Apply blur in one dimension.
HorizontalBoxBlur transposes image at same time. */ Use imOut as a destination at first pass,
HorizontalBoxBlur(imOut, imIn, radius); then use imOut as a source too. */
ImagingHorizontalBoxBlur(imOut, imIn, radius);
for (i = 1; i < n; i ++) { for (i = 1; i < n; i ++) {
HorizontalBoxBlur(imOut, imOut, radius); ImagingHorizontalBoxBlur(imOut, imOut, radius);
} }
ImagingTranspose(temp, imOut); /* Transpose result for blur in another direction. */
ImagingTranspose(imTransposed, imOut);
/* Blur transposed result from previout step in same direction. /* Reuse imTransposed as a source and destination there. */
Reseult will be transposed again. We'll get original image
blurred in both directions. */
for (i = 0; i < n; i ++) { for (i = 0; i < n; i ++) {
HorizontalBoxBlur(temp, temp, radius); ImagingHorizontalBoxBlur(imTransposed, imTransposed, radius);
} }
ImagingTranspose(imOut, temp); /* Restore original orientation. */
ImagingTranspose(imOut, imTransposed);
ImagingDelete(temp); ImagingDelete(imTransposed);
return imOut; return imOut;
} }