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authorConstantin Jucovschi <cj@ubuntu.localdomain>2009-04-24 07:20:22 -0400
committerConstantin Jucovschi <cj@ubuntu.localdomain>2009-04-24 07:20:22 -0400
commit8f27e65bddd7d4b8515ce620fb485fdd78fcdf89 (patch)
treebd328a4dd4f92d32202241b5e3a7f36177792c5f /rasodmg/tiling.cc
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Initial commitv8.0
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diff --git a/rasodmg/tiling.cc b/rasodmg/tiling.cc
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+/*
+* 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>.
+/
+/**
+ * SOURCE: tiling.cc
+ *
+ * MODULE: rasodmg
+ * CLASS: r_Tiling
+ *
+ * COMMENTS:
+ * None
+ *
+*/
+
+//for max min
+#include <algorithm>
+
+//for pow
+#include <math.h>
+#include <iostream>
+#include "rasodmg/tiling.hh"
+#include "raslib/rmdebug.hh"
+#include "raslib/minterval.hh"
+#include "rasodmg/gmarray.hh"
+#include "raslib/dlist.hh"
+
+const char*
+r_Tiling::ASTERIX = "*";
+const char*
+r_Tiling::COLON = ";";
+const char*
+r_Tiling::COMMA = ",";
+const char*
+r_Tiling::LSQRBRA = "[";
+const char*
+r_Tiling::RSQRBRA = "]";
+const long
+r_Tiling::DefaultBase = 10;
+
+r_Tiling::~r_Tiling()
+ {
+ }
+
+const char*
+r_No_Tiling::description = "no parameters";
+
+r_No_Tiling::r_No_Tiling(const char* encoded) throw(r_Error)
+ {
+ //we don't use encoded string, it is present in order to have
+ //uniform interface "char* constructor" for every tiling strategy
+ }
+
+r_No_Tiling::r_No_Tiling()
+ {
+ }
+
+r_No_Tiling::~r_No_Tiling()
+ {
+ }
+
+void
+r_No_Tiling::print_status(std::ostream& os) const
+ {
+ os << "r_No_Tiling[ ]";
+ }
+
+bool
+r_No_Tiling::is_compatible(const r_Minterval& obj_domain, r_Bytes cellTypeSize) const
+ {
+ return true;
+ }
+
+std::vector<r_Minterval>*
+r_No_Tiling::compute_tiles(const r_Minterval& obj_domain, r_Bytes cellTypeSize) const throw (r_Error)
+ {
+ RMDBGENTER(4, RMDebug::module_rasodmg, "r_No_Tiling", "compute_tiles(" << obj_domain << ", " << cellTypeSize << ")")
+ std::vector<r_Minterval>* result = new std::vector<r_Minterval>;
+ result->push_back(obj_domain);
+ RMDBGEXIT(4, RMDebug::module_rasodmg, "r_No_Tiling", "compute_tiles() " << *result)
+ return result;
+ }
+
+r_Tiling*
+r_No_Tiling::clone() const
+ {
+ r_Tiling* clo = new r_No_Tiling();
+ return clo;
+ }
+
+r_Tiling_Scheme
+r_No_Tiling::get_tiling_scheme() const
+ {
+ return r_NoTiling;
+ }
+
+std::ostream&
+operator<<(std::ostream& os, const r_Tiling& t)
+ {
+ t.print_status(os);
+ return os;
+ }
+
+const char*
+r_Size_Tiling::description = "tile configuration or tile dimension and tile size (in bytes) (ex: \"[0:9,0:9];100\" or \"2;100\")";
+
+r_Size_Tiling::r_Size_Tiling(const char* encoded) throw (r_Error)
+ : tile_size(0)
+{
+ if(!encoded) {
+ RMInit::logOut << "r_Size_Tiling::r_Size_Tiling(" << (encoded?encoded:"NULL") << ")" << endl;
+ throw r_Error(TILINGPARAMETERNOTCORRECT);
+ }
+
+ r_Bytes tileS=strtol(encoded, (char**)NULL, DefaultBase);
+ if(tileS<=0) {
+ RMInit::logOut << "r_Size_Tiling::r_Size_Tiling(" << encoded << "): Error decoding tile size." << endl;
+ throw r_Error(TILINGPARAMETERNOTCORRECT);
+ }
+ tile_size = tileS;
+}
+
+r_Size_Tiling::r_Size_Tiling(r_Bytes ts) :
+ tile_size(ts)
+ {
+ }
+
+r_Size_Tiling::~r_Size_Tiling()
+ {
+ }
+
+r_Bytes
+r_Size_Tiling::get_tile_size() const
+ {
+ return tile_size;
+ }
+
+void
+r_Size_Tiling::print_status(std::ostream& os) const
+ {
+ os << "r_Size_Tiling[ tile size = " << tile_size << " ]";
+ }
+
+bool
+r_Size_Tiling::is_compatible(const r_Minterval& obj_domain, r_Bytes cellTypeSize) const
+ {
+ return ((cellTypeSize <= tile_size) && (obj_domain.dimension() != 0));
+ }
+
+std::vector<r_Minterval>*
+r_Size_Tiling::compute_tiles(const r_Minterval& obj_domain, r_Bytes cellTypeSize) const throw (r_Error)
+ {
+ RMDBGENTER(4, RMDebug::module_rasodmg, "r_Size_Tiling", "compute_tiles(" << obj_domain << ", " << cellTypeSize << ")")
+ if (cellTypeSize > tile_size)
+ {
+ RMInit::logOut << "r_Size_Tiling::compute_tiles(" << obj_domain << ", " << cellTypeSize << ") tile size (" << tile_size << ") is smaller than type length (" << cellTypeSize << ")" << endl;
+ throw r_Error(TILESIZETOOSMALL);
+ }
+ std::vector<r_Minterval>* result = new std::vector<r_Minterval>;
+ r_Minterval bigDom = obj_domain;
+ r_Dimension dim = bigDom.dimension();
+ r_Minterval tileDom(dim);
+ // compute the domain of the small tiles
+ // tiles are n-dimensional cubes with edge length n-th root of max tile size
+ RMDBGMIDDLE(4, RMDebug::module_rasodmg, "r_Size_Tiling", "tile size " << get_tile_size())
+ r_Range edgeLength = (r_Range)std::max((r_Range)floor(pow(get_tile_size()/cellTypeSize, 1/(double)dim)), 1);
+ r_Dimension dimcnt = 0;
+ for (dimcnt = 0; dimcnt < dim; dimcnt++)
+ tileDom << r_Sinterval((r_Range)0, edgeLength - 1);
+
+ r_Minterval currDom(dim);
+ r_Point cursor(dim);
+ r_Point tileSize;
+ r_Point origin;
+ bool done = 0;
+
+ // initialize cursor
+ for (dimcnt = 0; dimcnt < dim; dimcnt++)
+ cursor[dimcnt] = 0;
+
+ // calculate size of Tiles
+ tileSize = tileDom.get_extent();
+
+ // origin of bigTile
+ origin = bigDom.get_origin();
+
+ // initialize currDom
+ for (dimcnt=0; dimcnt < dim; dimcnt++)
+ currDom << r_Sinterval((r_Range)origin[dimcnt], (r_Range)(origin[dimcnt] + tileSize[dimcnt] - 1));
+ // resets tileDom to lower left side of bigTile
+ tileDom = currDom;
+
+ // intersect with bigTile
+ currDom.intersection_with(bigDom);
+
+ // iterate with smallTile over bigTile
+ while (!done)
+ {
+ currDom.intersection_with(bigDom);
+ // create new smallTile
+ r_Minterval smallTile(dim);
+
+ smallTile = currDom;
+ // insert tile in set
+ result->push_back(smallTile);
+
+ // increment cursor, start with highest dimension
+ r_Dimension i = cursor.dimension() - 1;
+ cursor[i] += tileSize[i];
+ // move cursor
+ currDom = tileDom.create_translation(cursor);
+ while (!(currDom.intersects_with( bigDom )))
+ {
+ cursor[i] = 0;
+ if (i == 0)
+ {
+ done = true;
+ break;
+ }
+ i--;
+ cursor[i] += tileSize[i];
+ // move cursor
+ currDom = tileDom.create_translation(cursor);
+ }
+ }
+ RMDBGEXIT(4, RMDebug::module_rasodmg, "r_Size_Tiling", "compute_tiles() " << *result)
+ return result;
+ }
+
+r_Tiling*
+r_Size_Tiling::clone() const
+ {
+ r_Tiling* clo = new r_Size_Tiling(tile_size);
+ return clo;
+ }
+
+r_Tiling_Scheme
+r_Size_Tiling::get_tiling_scheme() const
+ {
+ return r_SizeTiling;
+ }
+
+/*
+std::ostream&
+operator<<(std::ostream& os, const r_Size_Tiling& t)
+ {
+ t.print_status(os);
+ return os;
+ }
+*/
+
+r_Dimension_Tiling::r_Dimension_Tiling(r_Dimension dim, r_Bytes ts)
+ : r_Size_Tiling(ts),
+ dimension(dim)
+ {
+ }
+
+r_Dimension_Tiling::~r_Dimension_Tiling()
+ {
+ }
+
+r_Dimension
+r_Dimension_Tiling::get_dimension() const
+ {
+ return dimension;
+ }
+
+void
+r_Dimension_Tiling::print_status(std::ostream& os) const
+ {
+ os << "r_Dimension_Tiling[ ";
+ r_Size_Tiling::print_status(os);
+ os << " dimension = " << dimension << " ]";
+ }
+
+bool
+r_Dimension_Tiling::is_compatible(const r_Minterval& obj_domain, r_Bytes cellTypeSize) const
+ {
+ return ((obj_domain.dimension() == dimension) && r_Size_Tiling::is_compatible(obj_domain, cellTypeSize));
+ }
+
+/*
+std::ostream&
+operator<<(std::ostream& os, const r_Dimension_Tiling& t)
+ {
+ t.print_status(os);
+ return os;
+ }
+*/
+
+