diff options
Diffstat (limited to 'raslib/miterf.hh')
-rw-r--r-- | raslib/miterf.hh | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/raslib/miterf.hh b/raslib/miterf.hh new file mode 100644 index 0000000..18f38b6 --- /dev/null +++ b/raslib/miterf.hh @@ -0,0 +1,128 @@ +/* +* This file is part of rasdaman community. +* +* Rasdaman community is free software: you can redistribute it and/or modify +* it under the terms of the GNU General Public License as published by +* the Free Software Foundation, either version 3 of the License, or +* (at your option) any later version. +* +* Rasdaman community 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 General Public License for more details. +* +* You should have received a copy of the GNU General Public License +* along with rasdaman community. If not, see <http://www.gnu.org/licenses/>. +* +* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann / +rasdaman GmbH. +* +* For more information please see <http://www.rasdaman.org> +* or contact Peter Baumann via <baumann@rasdaman.com>. +/ +/** + * INCLUDE: miter.hh + * + * MODULE: raslib + * CLASS: r_MiterFloat + * +*/ + +#ifndef _D_MITERF_ +#define _D_MITERF_ + +class r_Minterval; + + +#include "raslib/mddtypes.hh" + +class r_FixedPointNumber + { + public: + inline r_FixedPointNumber(); + inline r_FixedPointNumber(const double&); + + inline r_FixedPointNumber& operator=(const r_FixedPointNumber&); + inline r_FixedPointNumber& operator=(const double&); + + // returns intPart_new - intPart_old -- used for tests + inline r_Range stepForward(const r_FixedPointNumber&); + + // returns carry of fracPart + inline bool stepForwardFlag(const r_FixedPointNumber&); + + inline r_Range getIntPart(); + + private: + inline void init(const double&); + + r_Range intPart; + r_Range fracPart; + + static const int FIXPREC; + static const r_Range carryPos; + static const r_Range fracMask; + static const double fixOne; + + friend std::ostream& operator<<(std::ostream&,r_FixedPointNumber&); + }; + + + +//@ManMemo: Module: {\bf raslib} + +/*@Doc: + r_MiterFloat is used for iterating through parts of + multidimensional intervals with arbitrary stepping size using + nearest neighbours. It is given the tile, the source domain + and the destination domain + Apart from that behaviour is exactly as in r_Miter. + +*/ + +class r_MiterFloat + { + public: + /// Constructor getting the source tile, the source domain and the destination domain + inline r_MiterFloat(Tile *sourceTile, r_Minterval& sourceDomain, r_Minterval& destDomain); + + /// destructor + inline ~r_MiterFloat(); + + /// iterator reset + inline void reset(); + + /// get the next cell + inline char* nextCell(); + + /// true if done + inline bool isDone(); + + protected: + struct iter_desc + { + r_FixedPointNumber min; + r_FixedPointNumber pos; + r_FixedPointNumber step; + + r_Range countSteps; + r_Range maxSteps; + + r_Range dimStep; + r_Range scaleStep; + char *cell; + }; + + r_Dimension dim; + char *currentCell; + const char *firstCell; + + iter_desc *iterDesc; + + bool done; + }; + + +#include "miterf.icc" + +#endif |