warp.hpp

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#pragma  once
#include <NANA\core.hpp>
#include "geometrytypes.hpp"
 
namespace NANA {
namespace ComputerGeometry {
 
 
 
 
template<typename _Tp>
void warpAffinePoint(const Matrix& M,const  PointXY_<_Tp> & src, PointXY_<_Tp>&dst ) {
    NA_Assert((M.m_rows == 2) && (M.m_cols == 3));
    NAFLOAT* pdata = M.m_data;
    dst.x = pdata[0] * src.x + pdata[1] * src.y + pdata[2];
    pdata += M.m_step;
    dst.y = pdata[0] * src.x + pdata[1] * src.y + pdata[2];
    return ;
}
 
 
template<typename _Tp>
void warpPerspectivePoint2D(const Matrix& M, const  PointXY_<_Tp>& src, PointXY_<_Tp>& dst) {
    NA_Assert((M.m_rows == 3) && (M.m_cols == 3));
    NAFLOAT* pdata = M.m_data;
 
    dst.x = pdata[0] * src.x + pdata[1] * src.y + pdata[2];
    pdata += M.m_step;
    dst.y = pdata[0] * src.x + pdata[1] * src.y + pdata[2];
    pdata += M.m_step;
    NAFLOAT w = pdata[0] * src.x + pdata[1] * src.y + pdata[2];
    dst.x /= w;
    dst.y /= w;
    return;
}
 
 
 
 
 
 
 
 
}
}