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00043 #ifndef COORDMAPPER_HPP
00044 #define COORDMAPPER_HPP 1
00045
00046
00047 #include <iostream>
00048
00049
00057 class Coordmapper1D {
00058 double _xx, _x0;
00060 public:
00061
00064 Coordmapper1D()
00065 : _xx(1.0), _x0(0.0) {}
00066
00069 Coordmapper1D( double xx, double x0 )
00070 : _xx(xx), _x0(x0) {}
00071
00074 void set_transformation( double xx, double x0 ) {
00075 _xx = xx;
00076 _x0 = x0;
00077 }
00078
00082 void transform( double &xout, const double &xin ) const {
00083 xout = _xx * xin + _x0;
00084 }
00085
00089 void transform( double &x ) const {
00090 x = _xx * x + _x0;
00091 }
00092
00095 void inv_transform( double &xout, const double &xin ) const {
00096 xout = (xin-_x0) / _xx;
00097 }
00098
00101 void inv_transform( double &x ) const {
00102 x = (x-_x0) / _xx;
00103 }
00104
00107 void debug_print( std::ostream &os ) const {
00108 os << "**Coordmapper1D\n";
00109 os << "_xx = " << _xx << "\n";
00110 os << "_x0 = " << _x0 << "\n";
00111 }
00112 };
00113
00114
00115
00119 class Coordmapper {
00120 Coordmapper1D _cmx;
00121 Coordmapper1D _cmy;
00123 public:
00124
00127 Coordmapper() {}
00128
00132 Coordmapper( Coordmapper1D cmx, Coordmapper1D cmy )
00133 : _cmx(cmx), _cmy(cmy) {}
00134
00137 Coordmapper( double xx, double x0, double yy, double y0 )
00138 : _cmx(xx,x0), _cmy(yy,y0) {}
00139
00142 void set_transformation( double xx, double x0, double yy, double y0 ) {
00143 _cmx.set_transformation( xx, x0 );
00144 _cmy.set_transformation( yy, y0 );
00145 }
00146
00149 void transform( double &x, double &y ) const {
00150 _cmx.transform( x );
00151 _cmy.transform( y );
00152 }
00153
00157 void transform( double *xout, const double *xin ) const {
00158 _cmx.transform( xout[0], xin[0] );
00159 _cmy.transform( xout[1], xin[1] );
00160 }
00161
00164 void inv_transform( double &x, double &y ) const {
00165 _cmx.inv_transform( x );
00166 _cmy.inv_transform( y );
00167 }
00168
00172 void inv_transform( double *xout, const double *xin ) const {
00173 _cmx.inv_transform( xout[0], xin[0] );
00174 _cmy.inv_transform( xout[1], xin[1] );
00175 }
00176
00177
00180 void debug_print( std::ostream &os ) const {
00181 os << "**Coordmapper x:\n";
00182 _cmx.debug_print( os );
00183 os << "**Coordmapper y:\n";
00184 _cmy.debug_print( os );
00185 }
00186 };
00187
00188
00189 #endif
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