** This is part of the CTSim program
** Copyright (c) 1983-2001 Kevin Rosenberg
**
-** $Id: interpolator.h,v 1.4 2001/03/24 05:28:28 kevin Exp $
+** $Id: interpolator.h,v 1.8 2003/01/30 21:53:16 kevin Exp $
**
** 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
class BilinearInterpolator {
private:
T** const m_ppMatrix;
- const unsigned int m_nx;
- const unsigned int m_ny;
+ const int m_nx;
+ const int m_ny;
public:
BilinearInterpolator (T** ppMatrix, unsigned int nx, unsigned int ny)
T interpolate (double dXPos, double dYPos)
{
- int iFloorX = floor (dXPos);
- int iFloorY = floor (dYPos);
+ int iFloorX = static_cast<int>(floor(dXPos));
+ int iFloorY = static_cast<int>(floor (dYPos));
double dXFrac = dXPos - iFloorX;
double dYFrac = dYPos - iFloorY;
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];
+ result = static_cast<T>(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]);
+ 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 = m_ppMatrix[iFloorX][iFloorY] + dXFrac * (m_ppMatrix[iFloorX+1][iFloorY] - m_ppMatrix[iFloorX][iFloorY]);
+ result = static_cast<T>(m_ppMatrix[iFloorX][iFloorY] + dXFrac * (m_ppMatrix[iFloorX+1][iFloorY] - m_ppMatrix[iFloorX][iFloorY]));
else
- result = (1 - dXFrac) * (1 - dYFrac) * m_ppMatrix[iFloorX][iFloorY] +
+ 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];
+ dXFrac * dYFrac * m_ppMatrix[iFloorX+1][iFloorY+1]);
return result;
}
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;
private:
T* const m_pX;
T* const m_pY;
- const unsigned int m_n;
+ const int m_n;
const bool m_bZeroOutsideRange;
public:
else
result = m_pY[m_n - 1];
} else {
- int iFloor = floor(dX);
+ int iFloor = static_cast<int>(floor(dX));
result = m_pY[iFloor] + (m_pY[iFloor+1] - m_pY[iFloor]) * (dX - iFloor);
}
} else {