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arrayndfloat.cpp
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arrayndfloat.cpp
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/*
Copyright 2010 Julien Mille
This file is part of CombinationOfPiecewiseGeodesicPaths.
CombinationOfPiecewiseGeodesicPaths is free software: you can redistribute
it and/or modify it under the terms of the GNU Lesser General Public License
as published by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
CombinationOfPiecewiseGeodesicPaths is distributed in the hope that it will
be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
General Public License for more details.
You should have received a copy of the GNU General Public License,
and a copy of the GNU Lesser General Public License, along with
CombinationOfPiecewiseGeodesicPaths. If not, see <http://www.gnu.org/licenses/>.
*/
#include <algorithm>
#include <string.h>
#include "arrayndfloat.h"
#ifdef ARRAYND_RUNTIME_CHECK
// Element returned in case of invalid access with operator [] or function GetElementInterpolate()
float CArray1D<float>::elementError;
#endif
CArray1D<float>::CArray1D(int size)
{
iSize = size;
pElements = new float[iSize];
}
CArray1D<float>::CArray1D(const CArray1D<float> &array)
{
iSize = array.iSize;
if (iSize!=0)
{
pElements = new float[iSize];
memcpy(pElements, array.pElements, sizeof(float)*iSize);
}
else pElements = NULL;
}
CArray1D<float>::~CArray1D()
{
Empty();
}
bool CArray1D<float>::Init(int size)
{
if (pElements!=NULL)
delete[] pElements;
iSize = size;
pElements = new float[iSize];
if (pElements!=NULL)
return true;
else
return false;
}
bool CArray1D<float>::Init(int size, float *pFloat)
{
if (Init(size)==true)
{
float *pElementsTemp, *pFloatTemp;
int i;
pElementsTemp = pElements;
pFloatTemp = pFloat;
for (i=0;i<iSize;i++)
*pElementsTemp++ = *pFloatTemp++;
return true;
}
else
return false;
}
/*
template <class S> bool CArray1D<float>::InitCast(const CArray1D<S> &array)
{
if (pElements!=NULL)
delete[] pElements;
iSize = array.GetSize();
pElements = new float[iSize];
if (pElements!=NULL)
{
float *pElementsThis = pElements;
S *pElementsParam = array.GetBuffer();
int i;
for (i=0;i<iSize;i++)
{
*pElementsThis = (float)(*pElementsParam);
pElementsThis++;
pElementsParam++;
}
return true;
}
else
return false;
}
*/
void CArray1D<float>::Empty()
{
if (pElements!=NULL)
delete[] pElements;
iSize = 0;
pElements = NULL;
}
void CArray1D<float>::Fill(const float &t)
{
int i;
float *pElementsTemp = pElements;
for (i=0;i<iSize;i++)
{
*pElementsTemp = t;
pElementsTemp++;
}
}
CArray1D<float> &CArray1D<float>::operator =(const CArray1D<float> &array)
{
// Reallocate if necessary
if (iSize!=array.iSize)
{
if (pElements!=NULL)
{
delete[] pElements;
pElements = NULL;
}
iSize = array.iSize;
pElements = new float[iSize];
}
// Copy elements
if (iSize!=0)
memcpy(pElements, array.pElements, sizeof(float)*iSize);
return *this;
}
CArray1D<float> &CArray1D<float>::operator +=(const CArray1D<float> &array)
{
if (iSize==array.iSize)
{
float *pElementsTemp, *pElementsTemp2;
int i;
pElementsTemp = pElements;
pElementsTemp2 = array.pElements;
for (i=0;i<iSize;i++)
*pElementsTemp++ += *pElementsTemp2++;
return *this;
}
else throw 0;
}
CArray1D<float> &CArray1D<float>::operator -=(const CArray1D<float> &array)
{
if (iSize==array.iSize)
{
float *pElementsTemp, *pElementsTemp2;
int i;
pElementsTemp = pElements;
pElementsTemp2 = array.pElements;
for (i=0;i<iSize;i++)
*pElementsTemp++ -= *pElementsTemp2++;
return *this;
}
else throw 0;
}
CArray1D<float> &CArray1D<float>::operator *=(const float &t)
{
float *pElementsTemp = pElements;
int i;
for (i=0;i<iSize;i++)
*pElementsTemp++ *= t;
return *this;
}
CArray1D<float> &CArray1D<float>::operator /=(const float &t)
{
float *pElementsTemp = pElements;
int i;
for (i=0;i<iSize;i++)
*pElementsTemp++ /= t;
return *this;
}
CArray1D<float> CArray1D<float>::operator +(const CArray1D<float> &array) const
{
if (iSize==array.iSize)
{
CArray1D<float> arrayResult(iSize);
float *pElementsTemp, *pElementsTemp2, *pElementsTempResult;
int i;
pElementsTemp = pElements;
pElementsTemp2 = array.pElements;
pElementsTempResult = arrayResult.pElements;
for (i=0;i<iSize;i++)
{
*pElementsTempResult = *pElementsTemp + *pElementsTemp2;
pElementsTemp++;
pElementsTemp2++;
pElementsTempResult++;
}
return arrayResult;
}
else throw 0;
}
CArray1D<float> CArray1D<float>::operator -() const
{
CArray1D<float> arrayResult(iSize);
float *pElementsTemp, *pElementsTempResult;
int i;
pElementsTemp = pElements;
pElementsTempResult = arrayResult.pElements;
for (i=0;i<iSize;i++)
{
*pElementsTempResult = -(*pElementsTemp);
pElementsTemp++;
pElementsTempResult++;
}
return arrayResult;
}
CArray1D<float> CArray1D<float>::operator -(const CArray1D<float> &array) const
{
if (iSize==array.iSize)
{
CArray1D<float> arrayResult(iSize);
float *pElementsTemp, *pElementsTemp2, *pElementsTempResult;
int i;
pElementsTemp = pElements;
pElementsTemp2 = array.pElements;
pElementsTempResult = arrayResult.pElements;
for (i=0;i<iSize;i++)
{
*pElementsTempResult = (*pElementsTemp)-(*pElementsTemp2);
pElementsTemp++;
pElementsTemp2++;
pElementsTempResult++;
}
return arrayResult;
}
else throw 0;
}
CArray1D<float> CArray1D<float>::operator *(const float &t) const
{
CArray1D<float> arrayResult(iSize);
float *pElementsTemp, *pElementsTempResult;
int i;
pElementsTemp = pElements;
pElementsTempResult = arrayResult.pElements;
for (i=0;i<iSize;i++)
{
*pElementsTempResult = (*pElementsTemp)*t;
pElementsTemp++;
pElementsTempResult++;
}
return arrayResult;
}
CArray1D<float> operator *(const float &t, const CArray1D<float> &v)
{
CArray1D<float> arrayResult(v.iSize);
float *pElementsTemp, *pElementsTempResult;
int i;
pElementsTemp = v.pElements;
pElementsTempResult = arrayResult.pElements;
for (i=0;i<v.iSize;i++)
{
*pElementsTempResult = (*pElementsTemp)*t;
pElementsTemp++;
pElementsTempResult++;
}
return arrayResult;
}
CArray1D<float> MultiplyElements(const CArray1D<float> &array1, const CArray1D<float> &array2)
{
if (array1.iSize==array2.iSize)
{
CArray1D<float> arrayResult(array1.iSize);
float *pElementsTemp1, *pElementsTemp2, *pElementsTempResult;
int i;
pElementsTemp1 = array1.pElements;
pElementsTemp2 = array2.pElements;
pElementsTempResult = arrayResult.pElements;
for (i=0;i<array1.iSize;i++)
{
*pElementsTempResult = (*pElementsTemp1)*(*pElementsTemp2);
pElementsTemp1++;
pElementsTemp2++;
pElementsTempResult++;
}
return arrayResult;
}
else throw 0;
}
CArray1D<float> CArray1D<float>::operator /(const float &t) const
{
CArray1D<float> arrayResult(iSize);
float *pElementsTemp, *pElementsTempResult;
int i;
pElementsTemp = pElements;
pElementsTempResult = arrayResult.pElements;
for (i=0;i<iSize;i++)
{
*pElementsTempResult = (*pElementsTemp)/t;
pElementsTemp++;
pElementsTempResult++;
}
return arrayResult;
}
CArray1D<float> &CArray1D<float>::AbsElements()
{
float *pElementsTemp;
int i;
pElementsTemp = pElements;
for (i=0;i<iSize;i++)
{
*pElementsTemp = fabs(*pElementsTemp);
pElementsTemp++;
}
return *this;
}
CArray1D<float> &CArray1D<float>::SquareElements()
{
float *pElementsTemp;
int i;
pElementsTemp = pElements;
for (i=0;i<iSize;i++)
{
*pElementsTemp = (*pElementsTemp)*(*pElementsTemp);
pElementsTemp++;
}
return *this;
}
CArray1D<float> &CArray1D<float>::SqrtElements()
{
float *pElementsTemp;
int i;
pElementsTemp = pElements;
for (i=0;i<iSize;i++)
{
*pElementsTemp = sqrt(*pElementsTemp);
pElementsTemp++;
}
return *this;
}
CCouple<float> CArray1D<float>::GetMinMax() const
{
CCouple<float> fMinMax;
int i;
float *pFloat;
pFloat = pElements;
fMinMax.x = *pFloat;
fMinMax.y = *pFloat;
for (i=0;i<iSize;i++)
{
if (*pFloat<fMinMax.x)
fMinMax.x = *pFloat;
else if (*pFloat>fMinMax.y)
fMinMax.y = *pFloat;
pFloat++;
}
return fMinMax;
}
float CArray1D<float>::Sum() const
{
float *pElementsTemp;
float fSum;
int i;
pElementsTemp = pElements;
fSum = 0.0f;
for (i=0;i<iSize;i++)
{
fSum += *pElementsTemp;
pElementsTemp++;
}
return fSum;
}
float CArray1D<float>::L1Norm() const
{
float *pElementsTemp;
float fNorm;
int i;
pElementsTemp = pElements;
fNorm = 0.0f;
for (i=0;i<iSize;i++)
{
fNorm += fabs(*pElementsTemp);
pElementsTemp++;
}
return fNorm;
}
float CArray1D<float>::L2Norm() const
{
float *pElementsTemp;
float fNorm;
int i;
pElementsTemp = pElements;
fNorm = 0.0f;
for (i=0;i<iSize;i++)
{
fNorm += (*pElementsTemp)*(*pElementsTemp);
pElementsTemp++;
}
return sqrt(fNorm);
}
float CArray1D<float>::InfiniteNorm() const
{
float *pElementsTemp;
float fNorm;
int i;
pElementsTemp = pElements;
fNorm = fabs(*pElementsTemp);
for (i=0;i<iSize;i++)
{
if (fabs(*pElementsTemp)>fNorm)
fNorm = fabs(*pElementsTemp);
pElementsTemp++;
}
return fNorm;
}
float L1Distance(const CArray1D<float> &array1, const CArray1D<float> &array2)
{
return (array1-array2).L1Norm();
}
float L2Distance(const CArray1D<float> &array1, const CArray1D<float> &array2)
{
return (array1-array2).L2Norm();
}
float InfiniteDistance(const CArray1D<float> &array1, const CArray1D<float> &array2)
{
return (array1-array2).InfiniteNorm();
}
void CArray1D<float>::Limit(float fMin, float fMax)
{
int i;
float *pFloat;
pFloat = pElements;
for (i=0;i<iSize;i++)
{
if (*pFloat<fMin)
*pFloat = fMin;
else if (*pFloat>fMax)
*pFloat = fMax;
pFloat++;
}
}
void CArray1D<float>::Normalize(float fMin, float fMax, float &fMinInit, float &fMaxInit)
{
int i;
float *pFloat;
float a, b;
pFloat = pElements;
fMinInit = *pFloat;
fMaxInit = *pFloat;
for (i=0;i<iSize;i++)
{
if (*pFloat<fMinInit)
fMinInit = *pFloat;
else if (*pFloat>fMaxInit)
fMaxInit = *pFloat;
pFloat++;
}
if (fMinInit==fMaxInit)
return;
a = (fMax-fMin)/(fMaxInit-fMinInit);
b = fMin - fMinInit*a;
pFloat = pElements;
for (i=0;i<iSize;i++)
{
(*pFloat) = a*(*pFloat)+b;
pFloat++;
}
}
// Convolution with a centered mask
CArray1D<float> CArray1D<float>::Convolve(const CArray1D<float> &arrayCenteredMask) const
{
CArray1D<int> arrayNeighbors;
CArray1D<float> arrayMask;
int neighbor, *pNeighbor;
float *pMask;
const float *pCenteredMask;
arrayNeighbors.Init(arrayCenteredMask.iSize);
arrayMask.Init(arrayCenteredMask.iSize);
pMask = arrayMask.GetBuffer();
pCenteredMask = arrayCenteredMask.GetBuffer();
pNeighbor = arrayNeighbors.GetBuffer();
for (neighbor=-arrayCenteredMask.GetSize()/2; neighbor<=arrayCenteredMask.GetSize()/2; neighbor++)
{
*pNeighbor = neighbor;
*pMask = *pCenteredMask;
pMask++;
pCenteredMask++;
pNeighbor++;
}
return Convolve(arrayNeighbors, arrayMask);
}
// Convolve with respect to a given neighborhood
CArray1D<float> CArray1D<float>::Convolve(const CArray1D<int> &arrayNeighbors, const CArray1D<float> &arrayMask) const
{
CArray1D<float> arrayRes;
int iNeighbor;
const float *pMask;
float *pFloat, *pFloatDest;
int i, minBound, maxBound;
const int *pNeighbor;
// Initialize result and offsets arrays
arrayRes.Init(iSize);
// Compute bounds
minBound = numeric_limits<int>::max();
maxBound = -numeric_limits<int>::max();
pNeighbor = arrayNeighbors.GetBuffer();
for (iNeighbor=0;iNeighbor<arrayNeighbors.GetSize();iNeighbor++)
{
minBound = min(minBound, *pNeighbor);
maxBound = max(maxBound, *pNeighbor);
pNeighbor++;
}
minBound = -minBound;
maxBound = iSize-1-maxBound;
// Main loop
pFloat = pElements + minBound;
pFloatDest = arrayRes.pElements + minBound;
for (i=minBound; i<=maxBound; i++)
{
*pFloatDest = 0.0f;
pNeighbor = arrayNeighbors.GetBuffer();
pMask = arrayMask.GetBuffer();
for (iNeighbor=0; iNeighbor<arrayNeighbors.GetSize(); iNeighbor++)
{
*pFloatDest += pFloat[*pNeighbor]*(*pMask);
pNeighbor++;
pMask++;
}
pFloat++;
pFloatDest++;
}
// i < minBound
pFloat = pElements;
pFloatDest = arrayRes.pElements;
for (i=0; i<minBound; i++)
{
*pFloatDest = 0.0f;
pNeighbor = arrayNeighbors.GetBuffer();
pMask = arrayMask.GetBuffer();
for (iNeighbor=0; iNeighbor<arrayNeighbors.GetSize(); iNeighbor++)
{
if (i+*pNeighbor>=0)
*pFloatDest += pFloat[*pNeighbor]*(*pMask);
else
*pFloatDest += pElements[0]*(*pMask);
pNeighbor++;
pMask++;
}
pFloat++;
pFloatDest++;
}
// x > maxBound
pFloat = pElements + (maxBound+1);
pFloatDest = arrayRes.pElements + (maxBound+1);
for (i=maxBound+1; i<iSize; i++)
{
*pFloatDest = 0.0f;
pNeighbor = arrayNeighbors.GetBuffer();
pMask = arrayMask.GetBuffer();
for (iNeighbor=0; iNeighbor<arrayNeighbors.GetSize(); iNeighbor++)
{
if (i+*pNeighbor<iSize)
*pFloatDest += pFloat[*pNeighbor]*(*pMask);
else
*pFloatDest += pElements[iSize-1]*(*pMask);
pNeighbor++;
pMask++;
}
pFloat++;
pFloatDest++;
}
return arrayRes;
}
// Convolve with centered mask. Borders are not processed. Object is modified
void CArray1D<float>::ConvolveNoBorder(const CArray1D<float> &arrayMask)
{
float *pArrayNew;
int iNeighbor;
const float *pMask;
float *pFloat, *pFloatDest, *pNeighbor;
int i;
if (iSize==0)
return;
pArrayNew = new float[iSize];
// Main loop
pFloat = pElements + arrayMask.iSize/2;
pFloatDest = pArrayNew + arrayMask.iSize/2;
for (i=0; i<iSize-arrayMask.iSize; i++)
{
*pFloatDest = 0.0f;
pMask = arrayMask.GetBuffer();
pNeighbor = pFloat-arrayMask.iSize/2;
for (iNeighbor=0; iNeighbor<arrayMask.GetSize(); iNeighbor++)
{
*pFloatDest += *pNeighbor*(*pMask);
pNeighbor++;
pMask++;
}
pFloat++;
pFloatDest++;
}
delete []pElements;
pElements = pArrayNew;
}
// Gaussian smoothing with one standard deviation
void CArray1D<float>::SetGaussianKernel(float fSigma, int iHalfSize)
{
int i, iSize;
float fSumCoefs, fExponent, fSigma2;
float *pFloat;
if (iHalfSize<=0)
iHalfSize = max(1, (int)(3.0f * fSigma));
iSize = 2*iHalfSize+1;
Init(iSize);
fSumCoefs = 0.0f;
fSigma2 = 2.0f*fSigma*fSigma;
pFloat = pElements;
for (i=-iHalfSize;i<=iHalfSize;i++)
{
fExponent = ((float)(i*i))/fSigma2;
*pFloat = exp(-fExponent);
fSumCoefs += *pFloat;
pFloat++;
}
*this/=fSumCoefs;
}
// CArray2D
CArray2D<float>::CArray2D(int width, int height):CArray1D<float>::CArray1D(width*height)
{
iWidth = width;
iHeight = height;
}
CArray2D<float>::CArray2D(const CCouple<int> &iDimensions):CArray1D<float>::CArray1D(iDimensions.x*iDimensions.y)
{
iWidth = iDimensions.x;
iHeight = iDimensions.y;
}
CArray2D<float>::CArray2D(const CArray2D<float> &array):CArray1D<float>::CArray1D(array)
{
iWidth = array.iWidth;
iHeight = array.iHeight;
}
CArray2D<float>::~CArray2D()
{
Empty();
}
bool CArray2D<float>::Init(int width, int height)
{
iWidth = width;
iHeight = height;
return CArray1D<float>::Init(iWidth*iHeight);
}
bool CArray2D<float>::Init(int width, int height, float *pFloat)
{
iWidth = width;
iHeight = height;
return CArray1D<float>::Init(iWidth*iHeight, pFloat);
}
bool CArray2D<float>::Init(const CCouple<int> &iDimensions)
{
iWidth = iDimensions.x;
iHeight = iDimensions.y;
return CArray1D<float>::Init(iWidth*iHeight);
}
/*
template <class S> bool CArray2D<float>::InitCast(const CArray2D<S> &array)
{
iWidth = array.GetWidth();
iHeight = array.GetHeight();
if (pElements!=NULL)
delete[] pElements;
iSize = iWidth*iHeight;
pElements = new float[iSize];
if (pElements!=NULL)
{
float *pElementsThis = pElements;
S *pElementsParam = array.GetBuffer();
int i;
for (i=0;i<iSize;i++)
{
*pElementsThis = (float)(*pElementsParam);
pElementsThis++;
pElementsParam++;
}
return true;
}
else
return false;
}
*/
void CArray2D<float>::Empty()
{
iWidth = iHeight = 0;
CArray1D<float>::Empty();
}
void CArray2D<float>::Fill(float t)
{
CArray1D<float>::Fill(t);
}
void CArray2D<float>::FillBoundary(float t)
{
if (this->pElements==NULL)
return;
float *pElementsTemp = this->pElements;
int x, y;
// Top row
pElementsTemp = this->pElements;
for (x=0;x<iWidth;x++)
*pElementsTemp++ = t;
// Bottom row
pElementsTemp = this->pElements + (iHeight-1)*iWidth;
for (x=0;x<iWidth;x++)
*pElementsTemp++ = t;
// Left column
pElementsTemp = this->pElements;
for (y=0;y<iHeight;y++)
{
*pElementsTemp = t;
pElementsTemp+=iWidth;
}
// Right column
pElementsTemp = this->pElements + iWidth-1;
for (y=0;y<iHeight;y++)
{
*pElementsTemp = t;
pElementsTemp+=iWidth;
}
}
CArray2D<float> &CArray2D<float>::operator =(const CArray2D<float> &array)
{
iWidth = array.iWidth;
iHeight = array.iHeight;
CArray1D<float>::operator =(array);
return *this;
}
CArray2D<float> &CArray2D<float>::operator +=(const CArray2D<float> &array)
{
if (iWidth==array.iWidth && iHeight==array.iHeight)
{
CArray1D<float>::operator +=(array);
return *this;
}
else
throw 0;
}
CArray2D<float> &CArray2D<float>::operator -=(const CArray2D<float> &array)
{
if (iWidth==array.iWidth && iHeight==array.iHeight)
{
CArray1D<float>::operator -=(array);
return *this;
}
else
throw 0;
}
CArray2D<float> &CArray2D<float>::operator *=(float t)
{
CArray1D<float>::operator *=(t);
return *this;
}
CArray2D<float> &CArray2D<float>::operator /=(float t)
{
CArray1D<float>::operator /=(t);
return *this;
}
CArray2D<float> CArray2D<float>::operator +(const CArray2D<float> &array) const
{
if (iWidth==array.iWidth && iHeight==array.iHeight)
{
CArray2D<float> arrayRes(*this);
return (arrayRes+=array);
}
else
throw 0;
}
CArray2D<float> CArray2D<float>::operator -() const
{
CArray2D<float> arrayRes(iWidth, iHeight);
int i;
float *pFloat, *pFloatRes;
pFloat = pElements;
pFloatRes = arrayRes.pElements;
for (i=0;i<iSize;i++)
(*pFloatRes++) = -(*pFloat++);
return arrayRes;
}
CArray2D<float> CArray2D<float>::operator -(const CArray2D<float> &array) const
{
if (iWidth==array.iWidth && iHeight==array.iHeight)
{
CArray2D<float> arrayRes(*this);
return (arrayRes-=array);
}
else
throw 0;
}
CArray2D<float> CArray2D<float>::operator *(float t) const
{
CArray2D<float> arrayRes(*this);
return arrayRes*=t;
}
CArray2D<float> operator *(float t, const CArray2D<float> &v)
{
CArray2D<float> arrayRes(v);
return arrayRes*=t;
}
CArray2D<float> MultiplyElements(const CArray2D<float> &array1, const CArray2D<float> &array2)
{
if (array1.iWidth==array2.iWidth && array1.iHeight==array2.iHeight)
{
CArray2D<float> arrayResult(array1.iWidth, array1.iHeight);
float *pElementsTemp1, *pElementsTemp2, *pElementsTempResult;
int i;
pElementsTemp1 = array1.pElements;
pElementsTemp2 = array2.pElements;
pElementsTempResult = arrayResult.pElements;
for (i=0;i<array1.iSize;i++)
{
*pElementsTempResult = (*pElementsTemp1)*(*pElementsTemp2);
pElementsTemp1++;
pElementsTemp2++;
pElementsTempResult++;
}
return arrayResult;
}
else
throw 0;
}
CArray2D<float> CArray2D<float>::operator /(float t) const
{
CArray2D<float> arrayRes(*this);
return arrayRes/=t;
}
CArray2D<float> &CArray2D<float>::AbsElements()
{
CArray1D<float>::AbsElements();
return *this;
}
CArray2D<float> &CArray2D<float>::SquareElements()
{
CArray1D<float>::SquareElements();
return *this;
}
CArray2D<float> &CArray2D<float>::SqrtElements()
{
CArray1D<float>::SqrtElements();
return *this;
}
CCouple<float> CArray2D<float>::GetMinMax() const
{
return CArray1D<float>::GetMinMax();
}