/*****************************************************************************
** This is part of the CTSim program
-** Copyright (c) 1983-2001 Kevin Rosenberg
-**
-** $Id: interpolator.h,v 1.2 2001/03/21 21:45:31 kevin Exp $
+** Copyright (c) 1983-2009 Kevin Rosenberg
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License (version 2) as
double interpolate (double x);
};
+
class CubicPolyInterpolator {
private:
const double* const m_pdY;
template<class T>
class BilinearInterpolator {
+private:
+ T** const m_ppMatrix;
+ const int m_nx;
+ const int m_ny;
+
+public:
+ BilinearInterpolator (T** ppMatrix, unsigned int nx, unsigned int ny)
+ : m_ppMatrix(ppMatrix), m_nx(nx), m_ny(ny)
+ {}
+
+ T interpolate (double dXPos, double dYPos)
+{
+ int iFloorX = static_cast<int>(floor(dXPos));
+ int iFloorY = static_cast<int>(floor (dYPos));
+ double dXFrac = dXPos - iFloorX;
+ double dYFrac = dYPos - iFloorY;
+
+ T result = 0;
+
+ if (iFloorX < 0 || iFloorY < 0 || iFloorX > m_nx-1 || iFloorY > m_ny-1)
+ result = 0;
+ else if (iFloorX == m_nx - 1 && iFloorY == m_ny - 1)
+ result = static_cast<T>(m_ppMatrix[m_nx-1][m_ny-1]);
+ else if (iFloorX == m_nx - 1)
+ result = static_cast<T>(m_ppMatrix[iFloorX][iFloorY] + dYFrac * (m_ppMatrix[iFloorX][iFloorY+1] - m_ppMatrix[iFloorX][iFloorY]));
+ else if (iFloorY == m_ny - 1)
+ result = static_cast<T>(m_ppMatrix[iFloorX][iFloorY] + dXFrac * (m_ppMatrix[iFloorX+1][iFloorY] - m_ppMatrix[iFloorX][iFloorY]));
+ else
+ result = static_cast<T>
+ ((1 - dXFrac) * (1 - dYFrac) * m_ppMatrix[iFloorX][iFloorY] +
+ dXFrac * (1 - dYFrac) * m_ppMatrix[iFloorX+1][iFloorY] +
+ dYFrac * (1 - dXFrac) * m_ppMatrix[iFloorX][iFloorY+1] +
+ dXFrac * dYFrac * m_ppMatrix[iFloorX+1][iFloorY+1]);
+
+ return result;
+}
+ };
+
+
+template<class T>
+class BilinearPolarInterpolator {
+private:
+ T** const m_ppMatrix;
+ const int m_nAngle;
+ const int m_nPos;
+ int m_nCenterPos;
+
+public:
+ BilinearPolarInterpolator (T** ppMatrix, unsigned int nAngle,
+ unsigned int nPos)
+ : m_ppMatrix(ppMatrix), m_nAngle(nAngle), m_nPos(nPos)
+ {
+ if (m_nPos %2)
+ m_nCenterPos = (m_nPos - 1) / 2;
+ else
+ m_nCenterPos = m_nPos / 2;
+ }
+
+ T interpolate (double dAngle, double dPos)
+{
+ int iFloorAngle = static_cast<int>(floor(dAngle));
+ int iFloorPos = static_cast<int>(floor (dPos));
+ double dAngleFrac = dAngle - iFloorAngle;
+ double dPosFrac = dPos - iFloorPos;
+
+ T result = 0;
+
+ if (iFloorAngle < -1 || iFloorPos < 0 || iFloorAngle > m_nAngle-1 || iFloorPos > m_nPos-1)
+ result = 0;
+ else if (iFloorAngle == -1 && iFloorPos == m_nPos-1)
+ result = static_cast<T>(m_ppMatrix[0][m_nPos-1] + dAngleFrac * (m_ppMatrix[m_nAngle-1][iFloorPos] - m_ppMatrix[0][iFloorPos]));
+ else if (iFloorAngle == m_nAngle - 1 && iFloorPos == m_nPos-1)
+ result = static_cast<T>(m_ppMatrix[m_nAngle-1][m_nPos-1] + dAngleFrac * (m_ppMatrix[0][iFloorPos] - m_ppMatrix[m_nAngle-1][iFloorPos]));
+ else if (iFloorPos == m_nPos - 1)
+ result = static_cast<T>(m_ppMatrix[iFloorAngle][iFloorPos] + dAngleFrac * (m_ppMatrix[iFloorAngle+1][iFloorPos] - m_ppMatrix[iFloorAngle][iFloorPos]));
+ else {
+ if (iFloorAngle == m_nAngle-1) {
+ int iUpperAngle = 0;
+ int iLowerPos = (m_nPos-1) - iFloorPos;
+ int iUpperPos = (m_nPos-1) - (iFloorPos+1);
+ result = static_cast<T>
+ ((1-dAngleFrac) * (1-dPosFrac) * m_ppMatrix[iFloorAngle][iFloorPos] +
+ dAngleFrac * (1-dPosFrac) * m_ppMatrix[iUpperAngle][iLowerPos] +
+ dPosFrac * (1-dAngleFrac) * m_ppMatrix[iFloorAngle][iFloorPos+1] +
+ dAngleFrac * dPosFrac * m_ppMatrix[iUpperAngle][iUpperPos]);
+ } else if (iFloorAngle == -1) {
+ int iLowerAngle = m_nAngle - 1;
+ int iLowerPos = (m_nPos-1) - iFloorPos;
+ int iUpperPos = (m_nPos-1) - (iFloorPos+1);
+ result = static_cast<T>
+ ((1-dAngleFrac) * (1-dPosFrac) * m_ppMatrix[iLowerAngle][iLowerPos] +
+ dAngleFrac * (1-dPosFrac) * m_ppMatrix[iFloorAngle+1][iFloorPos] +
+ dPosFrac * (1-dAngleFrac) * m_ppMatrix[iLowerAngle][iUpperPos] +
+ dAngleFrac * dPosFrac * m_ppMatrix[iFloorAngle+1][iFloorPos+1]);
+ } else
+ result = static_cast<T>
+ ((1-dAngleFrac) * (1-dPosFrac) * m_ppMatrix[iFloorAngle][iFloorPos] +
+ dAngleFrac * (1-dPosFrac) * m_ppMatrix[iFloorAngle+1][iFloorPos] +
+ dPosFrac * (1-dAngleFrac) * m_ppMatrix[iFloorAngle][iFloorPos+1] +
+ dAngleFrac * dPosFrac * m_ppMatrix[iFloorAngle+1][iFloorPos+1]);
+ }
+ return result;
+}
+};
+
+
+template<class T>
+class BicubicPolyInterpolator {
private:
T** const m_ppMatrix;
const unsigned int m_nx;
const unsigned int m_ny;
public:
- BilinearInterpolator (T** ppMatrix, unsigned int nx, unsigned int ny)
+ BicubicPolyInterpolator (T** ppMatrix, unsigned int nx, unsigned int ny)
: m_ppMatrix(ppMatrix), m_nx(nx), m_ny(ny)
{}
-
+
T interpolate (double dXPos, double dYPos)
{
- int iFloorX = floor (dXPos);
- int iFloorY = floor (dYPos);
- double dXFrac = dXPos - iFloorX;
- double dYFrac = dYPos - iFloorY;
+ // int iFloorX = static_cast<int>(floor (dXPos));
+ // int iFloorY = static_cast<int>(floor (dYPos));
+ // double dXFrac = dXPos - iFloorX;
+ // double dYFrac = dYPos - iFloorY;
T result = 0;
- if (iFloorX < 0 || iFloorY < 0 || iFloorX > m_nx-1 || iFloorY > m_ny-1)
- result = 0;
- else if (iFloorX == m_nx - 1 && iFloorY == m_ny - 1)
- result = m_ppMatrix[m_nx-1][m_ny-1];
- else if (iFloorX == m_nx - 1)
- result = m_ppMatrix[iFloorX][iFloorY] + dYFrac * (m_ppMatrix[iFloorX][iFloorY+1] - m_ppMatrix[iFloorX][iFloorY]);
- else if (iFloorY == m_ny - 1)
- result = m_ppMatrix[iFloorX][iFloorY] + dXFrac * (m_ppMatrix[iFloorX+1][iFloorY] - m_ppMatrix[iFloorX][iFloorY]);
- else
- result = (1 - dXFrac) * (1 - dYFrac) * m_ppMatrix[iFloorX][iFloorY] +
- dXFrac * (1 - dYFrac) * m_ppMatrix[iFloorX+1][iFloorY] +
- dYFrac * (1 - dXFrac) * m_ppMatrix[iFloorX][iFloorY+1] +
- dXFrac * dYFrac * m_ppMatrix[iFloorX+1][iFloorY+1];
+ // Need to add code
return result;
}
template<class T>
class LinearInterpolator {
private:
- T* const m_pY;
T* const m_pX;
- const unsigned int m_n;
+ T* const m_pY;
+ const int m_n;
+ const bool m_bZeroOutsideRange;
public:
- LinearInterpolator (T* pY, unsigned int n)
- : m_pY(pY), m_pX(0), m_n(n)
+ LinearInterpolator (T* pY, unsigned int n, bool bZeroOutside = true)
+ : m_pX(0), m_pY(pY), m_n(n), m_bZeroOutsideRange(bZeroOutside)
{}
-
- LinearInterpolator (T* pY, T* pX, unsigned int n)
- : m_pY(pY), m_pX(pX), m_n(n)
+
+ LinearInterpolator (T* pX, T* pY, unsigned int n, bool bZeroOutside = true)
+ : m_pX(pX), m_pY(pY), m_n(n), m_bZeroOutsideRange(bZeroOutside)
{}
-
+
double interpolate (double dX, int* piLastFloor = NULL)
{
double result = 0;
if (! m_pX) {
if (dX == 0)
result = m_pY[0];
- else if (dX < 0)
- result = 0;
- else if (dX == m_n - 1)
+ else if (dX < 0) {
+ if (m_bZeroOutsideRange)
+ result = 0;
+ else
+ result = m_pY[0];
+ } else if (dX == m_n - 1)
result = m_pY[m_n-1];
- else if (dX > m_n - 1)
- result = 0;
- else {
- int iFloor = floor(dX);
+ else if (dX > m_n - 1) {
+ if (m_bZeroOutsideRange)
+ result = 0;
+ else
+ result = m_pY[m_n - 1];
+ } else {
+ int iFloor = static_cast<int>(floor(dX));
result = m_pY[iFloor] + (m_pY[iFloor+1] - m_pY[iFloor]) * (dX - iFloor);
}
} else {
}
if (dX == m_pX[0])
result = m_pY[0];
- else if (dX < m_pX[0])
- result = 0;
- else if (dX == m_pX[m_n-1])
+ else if (dX < m_pX[0]) {
+ if (m_bZeroOutsideRange)
+ result = 0;
+ else
+ result = m_pY[0];
+ } else if (dX == m_pX[m_n-1])
result = m_pY[m_n-1];
- else if (dX > m_pX[m_n-1])
- result = 0;
- else {
+ else if (dX > m_pX[m_n - 1]) {
+ if (m_bZeroOutsideRange)
+ result = 0;
+ else
+ result = m_pY[m_n - 1];
+ } else {
if (iLower < 0 || iLower >= m_n) {
sys_error (ERR_SEVERE, "Coordinate out of range [linearInterpolate]");
return 0;
projects / ctsim.git / blobdiff