Backup_Repos/calibre
1
0
Fork 0
mirror of git://github.com/kovidgoyal/calibre.git synced 2026-05-09 11:14:02 +02:00
Code Issues Projects Releases Wiki Activity

Visual Studio fixes

Browse source
This commit is contained in:
Kovid Goyal 2016-05-06 09:22:35 +05:30
parent 5a1bad26a7
commit 9436cb0315
1 changed files with 4 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
src/calibre/utils/imageops/imageops.cpp
View file

@ -8,6 +8,7 @@
#include <stdexcept>
#include "imageops.h"
#include <QColor>
#include <cmath>
#define SQUARE(x) (x)*(x)
#define MAX(x, y) ((x) > (y)) ? (x) : (y)
@ -245,16 +246,16 @@ int default_convolve_matrix_size(const float radius, const float sigma, const bo
if(sigma == 0.0) throw std::out_of_range("Zero sigma is invalid for convolution");
if(radius > 0.0)
return((int)(2.0*std::ceil(radius)+1.0));
return((int)(2.0*ceil(radius)+1.0));
Py_BEGIN_ALLOW_THREADS;
matrix_size = 5;
do{
normalize = 0.0;
for(i=(-matrix_size/2); i <= (matrix_size/2); ++i)
normalize += std::exp(-((float) i*i)/sigma2) / sigmaSQ2PI;
normalize += exp(-((float) i*i)/sigma2) / sigmaSQ2PI;
i = matrix_size/2;
value = std::exp(-((float) i*i)/sigma2) / sigmaSQ2PI / normalize;
value = exp(-((float) i*i)/sigma2) / sigmaSQ2PI / normalize;
matrix_size += 2;
} while((int)(max*value) > 0);