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#/*##########################################################################
#
# The PyMca X-Ray Fluorescence Toolkit
#
# Copyright (c) 2004-2014 European Synchrotron Radiation Facility
#
# This file is part of the PyMca X-ray Fluorescence Toolkit developed at
# the ESRF by the Software group.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
#############################################################################*/
#include <stdlib.h>
#include <string.h>
#include <math.h>
#define MIN(x, y) (((x) < (y)) ? (x) : (y))
#define MAX(x, y) (((x) > (y)) ? (x) : (y))
void smooth1d(double *data, int size);
void smooth2d(double *data, int size0, int size1);
void smooth3d(double *data, int size0, int size1, int size2);
void smooth1d(double *data, int size)
{
long i;
double oldy;
double newy;
if (size < 3)
{
return;
}
oldy = data[0];
for (i=0; i<(size-1); i++)
{
newy = 0.25 * (oldy + 2 * data[i] + data[i+1]);
oldy = data[i];
data[i] = newy;
}
data[size-1] = 0.25 * oldy + 0.75 * data[size-1];
return;
}
void smooth2d(double *data, int size0, int size1)
{
long i, j;
double *p;
/* smooth the first dimension */
for (i=0; i < size0; i++)
{
smooth1d(&data[i*size1], size1);
}
/* smooth the 2nd dimension */
p = (double *) malloc(size0 * sizeof(double));
for (i=0; i < size1; i++)
{
for (j=0; j<size0; j++)
{
p[j] = data[j*size1+i];
}
smooth1d(p, size0);
}
free(p);
}
void smooth3d(double *data, int size0, int size1, int size2)
{
long i, j, k, ihelp, jhelp;
double *p;
int size;
size = size1*size2;
/* smooth the first dimension */
for (i=0; i < size0; i++)
{
smooth2d(&data[i*size], size1, size2);
}
/* smooth the 2nd dimension */
size = size0 * size2;
p = (double *) malloc(size * sizeof(double));
for (i=0; i < size1; i++)
{
ihelp = i * size2;
for (j=0; j<size0; j++)
{
jhelp = j * size1 * size2 + ihelp;
for(k=0; k<size2; k++)
{
p[j*size2+k] = data[jhelp+k];
}
}
smooth2d(p, size0, size2);
}
free(p);
/* smooth the 3rd dimension */
size = size0 * size1;
p = (double *) malloc(size * sizeof(double));
for (i=0; i < size2; i++)
{
for (j=0; j<size0; j++)
{
jhelp = j * size1 * size2 + i;
for(k=0; k<size1; k++)
{
p[j*size1+k] = data[jhelp+k*size2];
}
}
smooth2d(p, size0, size1);
}
free(p);
}
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