71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
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/*
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This file is part of SECONDO.
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Copyright (C) 2011, University in Hagen, Department of Computer Science,
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Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "createHgtIndex.h"
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using namespace std;
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namespace raster2 {
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ListExpr createHgtIndexTM(ListExpr args) {
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const std::string error_message = "expects an object of the type sint and "
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"an optional integer";
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if (!nl->HasLength(args, 1) && !nl->HasLength(args, 2)) {
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return listutils::typeError(error_message);
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}
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if (!sint::checkType(nl->First(args))) {
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return listutils::typeError(error_message);
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}
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if (nl->HasLength(args, 1)) {
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return nl->ThreeElemList(
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nl->SymbolAtom(Symbol::APPEND()),
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nl->OneElemList(nl->IntAtom(1)),
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nl->ThreeElemList(nl->SymbolAtom(Hash::BasicType()), nl->Empty(),
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nl->SymbolAtom(CcInt::BasicType())));
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}
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else {
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if (!CcInt::checkType(nl->Second(args))) {
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return listutils::typeError(error_message);
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}
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}
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return nl->ThreeElemList(nl->SymbolAtom(Hash::BasicType()), nl->Empty(),
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nl->SymbolAtom(CcInt::BasicType()));
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}
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int createHgtIndexVM(Word* args, Word& result, int message, Word& local,
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Supplier s) {
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result = qp->ResultStorage(s);
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sint *hgt = static_cast<sint*>(args[0].addr);
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int precision = (static_cast<CcInt*>(args[1].addr))->GetIntval();
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Hash *hash = static_cast<Hash*>(result.addr);
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hash->Truncate();
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sint::storage_type& rs = hgt->getStorage();
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for (raster2::sint::iter_type it = rs.begin(), e = rs.end(); it != e; ++it) {
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int value = ((int)((int)*it / precision)) * precision;
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hash->Append(value, it.getIndex()[0]);
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hash->Append(value, it.getIndex()[1]);
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}
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return 0;
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}
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}
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