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/**********************************************************************
*
* GEOS - Geometry Engine Open Source
* http://geos.osgeo.org
*
* Copyright (C) 2020 Paul Ramsey <pramsey@cleverelephant.ca>
*
* This is free software; you can redistribute and/or modify it under
* the terms of the GNU Lesser General Public Licence as published
* by the Free Software Foundation.
* See the COPYING file for more information.
*
**********************************************************************/
#include <util/NodingTestUtil.h>
using namespace geos::geom;
using namespace geos::noding;
using geos::noding::Noder;
using geos::io::WKTReader;
using geos::io::WKTWriter;
using geos::geom::util::LinearComponentExtracter;
namespace geos {
/*private static*/
std::unique_ptr<Geometry>
NodingTestUtil::toLines(const std::vector<SegmentString*>* nodedList, const GeometryFactory* geomFact)
{
std::vector<std::unique_ptr<Geometry>> lines;
for (auto nss : *nodedList) {
CoordinateSequence* pts = nss->getCoordinates();
// pts is owned by nss, so we make a copy to build the line
// on top of. Lines are 100% self-contained and own all their parts.
// Input nodedList can be freed.
lines.emplace_back(geomFact->createLineString(pts->clone()));
}
if (lines.size() == 1) return std::move(lines[0]);
// move the lines to pass ownership to the multiLineString
return geomFact->createMultiLineString(std::move(lines));
}
/*private static*/
std::vector<SegmentString*>
NodingTestUtil::toSegmentStrings(std::vector<const LineString*>& lines)
{
std::vector<SegmentString*> nssList;
bool constructZ = false;
bool constructM = false;
for (auto line : lines) {
constructZ |= line->hasZ();
constructM |= line->hasM();
}
for (auto line : lines) {
// line->getCoordinates() clones CoordinateSequence
// into a unique_ptr<> which we have to release() to the
// NodedSegmentString constructor, so
// nss now owns nss->pts
NodedSegmentString* nss = new NodedSegmentString(line->getCoordinates().release(), constructZ, constructM, line);
nssList.push_back(nss);
}
return nssList;
}
/*public static*/
std::unique_ptr<Geometry>
NodingTestUtil::nodeValidated(const Geometry* geom1, const Geometry* geom2, Noder* noder)
{
std::vector<const LineString*> lines;
// lines are const* to linear components of geom1, geom1 still
// owns all coordinates, etc
LinearComponentExtracter::getLines(*geom1, lines);
if (geom2 != nullptr) {
LinearComponentExtracter::getLines(*geom2, lines);
}
// ssList needs to be disposed after noder is done working
std::vector<SegmentString*> ssList = toSegmentStrings(lines);
ValidatingNoder noderValid(*noder);
// computeNotes might alter ssList, but ssList still
// holds all memory
noderValid.computeNodes(&ssList);
// getNodedSubstrings calls NodedSegmentString::getNodedSubStrings()
// which creates new NodedSegmentString and new pts member, so complete
// new copy of data. Can be disposed of after geometries are constructed
// std::vector<SegmentString*>* nodedList = noderValid.getNodedSubstrings();
std::vector<SegmentString*>* nodedList = noderValid.getNodedSubstrings();
// Dispose of ssList
for (auto ss: ssList) {
delete ss;
}
std::unique_ptr<Geometry> lineGeom = toLines(nodedList, geom1->getFactory());
// Dispose of nodedList
for (auto nss: *nodedList) {
delete nss;
}
delete nodedList;
return lineGeom;
}
} // geos
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