214 lines
8.7 KiB
C++
214 lines
8.7 KiB
C++
/*
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Copyright (c) 2013, Project OSRM, Dennis Luxen, others
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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Redistributions of source code must retain the above copyright notice, this list
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of conditions and the following disclaimer.
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Redistributions in binary form must reproduce the above copyright notice, this
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list of conditions and the following disclaimer in the documentation and/or
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other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef DESCRIPTIONFACTORY_H_
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#define DESCRIPTIONFACTORY_H_
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#include "../Algorithms/DouglasPeucker.h"
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#include "../Algorithms/PolylineCompressor.h"
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#include "../DataStructures/PhantomNodes.h"
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#include "../DataStructures/RawRouteData.h"
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#include "../DataStructures/SegmentInformation.h"
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#include "../DataStructures/TurnInstructions.h"
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#include "../Util/SimpleLogger.h"
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#include "../typedefs.h"
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#include <osrm/Coordinate.h>
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#include <limits>
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#include <vector>
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/* This class is fed with all way segments in consecutive order
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* and produces the description plus the encoded polyline */
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class DescriptionFactory {
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DouglasPeucker polyline_generalizer;
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PolylineCompressor polyline_compressor;
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PhantomNode start_phantom, target_phantom;
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double DegreeToRadian(const double degree) const;
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double RadianToDegree(const double degree) const;
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public:
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struct RouteSummary {
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std::string lengthString;
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std::string durationString;
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unsigned startName;
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unsigned destName;
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RouteSummary() :
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lengthString("0"),
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durationString("0"),
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startName(0),
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destName(0)
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{}
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void BuildDurationAndLengthStrings(
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const double distance,
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const unsigned time
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) {
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//compute distance/duration for route summary
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intToString(round(distance), lengthString);
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int travel_time = time/10;
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intToString(std::max(travel_time, 1), durationString);
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}
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} summary;
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double entireLength;
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//I know, declaring this public is considered bad. I'm lazy
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std::vector <SegmentInformation> pathDescription;
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DescriptionFactory();
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virtual ~DescriptionFactory();
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double GetBearing(const FixedPointCoordinate& C, const FixedPointCoordinate& B) const;
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void AppendEncodedPolylineString(std::vector<std::string> &output) const;
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void AppendUnencodedPolylineString(std::vector<std::string> &output) const;
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void AppendSegment(const FixedPointCoordinate & coordinate, const PathData & data);
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void BuildRouteSummary(const double distance, const unsigned time);
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void SetStartSegment(const PhantomNode & start_phantom);
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void SetEndSegment(const PhantomNode & start_phantom);
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void AppendEncodedPolylineString(
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const bool return_encoded,
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std::vector<std::string> & output
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);
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template<class DataFacadeT>
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void Run(
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const DataFacadeT * facade,
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const unsigned zoomLevel
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) {
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if( pathDescription.empty() ) {
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return;
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}
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/** starts at index 1 */
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pathDescription[0].length = 0;
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for(unsigned i = 1; i < pathDescription.size(); ++i) {
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pathDescription[i].length = FixedPointCoordinate::ApproximateEuclideanDistance(pathDescription[i-1].location, pathDescription[i].location);
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}
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// std::string string0 = facade->GetEscapedNameForNameID(pathDescription[0].name_id);
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// std::string string1;
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/*Simplify turn instructions
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Input :
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10. Turn left on B 36 for 20 km
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11. Continue on B 35; B 36 for 2 km
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12. Continue on B 36 for 13 km
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becomes:
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10. Turn left on B 36 for 35 km
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*/
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//TODO: rework to check only end and start of string.
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// stl string is way to expensive
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// unsigned lastTurn = 0;
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// for(unsigned i = 1; i < pathDescription.size(); ++i) {
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// string1 = sEngine.GetEscapedNameForNameID(pathDescription[i].name_id);
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// if(TurnInstructionsClass::GoStraight == pathDescription[i].turn_instruction) {
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// if(std::string::npos != string0.find(string1+";")
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// || std::string::npos != string0.find(";"+string1)
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// || std::string::npos != string0.find(string1+" ;")
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// || std::string::npos != string0.find("; "+string1)
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// ){
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// SimpleLogger().Write() << "->next correct: " << string0 << " contains " << string1;
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// for(; lastTurn != i; ++lastTurn)
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// pathDescription[lastTurn].name_id = pathDescription[i].name_id;
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// pathDescription[i].turn_instruction = TurnInstructionsClass::NoTurn;
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// } else if(std::string::npos != string1.find(string0+";")
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// || std::string::npos != string1.find(";"+string0)
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// || std::string::npos != string1.find(string0+" ;")
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// || std::string::npos != string1.find("; "+string0)
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// ){
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// SimpleLogger().Write() << "->prev correct: " << string1 << " contains " << string0;
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// pathDescription[i].name_id = pathDescription[i-1].name_id;
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// pathDescription[i].turn_instruction = TurnInstructionsClass::NoTurn;
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// }
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// }
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// if (TurnInstructionsClass::NoTurn != pathDescription[i].turn_instruction) {
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// lastTurn = i;
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// }
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// string0 = string1;
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// }
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double lengthOfSegment = 0;
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unsigned durationOfSegment = 0;
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unsigned indexOfSegmentBegin = 0;
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for(unsigned i = 1; i < pathDescription.size(); ++i) {
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entireLength += pathDescription[i].length;
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lengthOfSegment += pathDescription[i].length;
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durationOfSegment += pathDescription[i].duration;
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pathDescription[indexOfSegmentBegin].length = lengthOfSegment;
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pathDescription[indexOfSegmentBegin].duration = durationOfSegment;
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if(TurnInstructionsClass::NoTurn != pathDescription[i].turn_instruction) {
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BOOST_ASSERT(pathDescription[i].necessary);
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lengthOfSegment = 0;
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durationOfSegment = 0;
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indexOfSegmentBegin = i;
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}
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}
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//Post-processing to remove empty or nearly empty path segments
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if(std::numeric_limits<double>::epsilon() > pathDescription.back().length) {
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if(pathDescription.size() > 2){
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pathDescription.pop_back();
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pathDescription.back().necessary = true;
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pathDescription.back().turn_instruction = TurnInstructions.NoTurn;
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target_phantom.nodeBasedEdgeNameID = (pathDescription.end()-2)->name_id;
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}
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} else {
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pathDescription[indexOfSegmentBegin].duration *= (1.-target_phantom.ratio);
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}
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if(std::numeric_limits<double>::epsilon() > pathDescription[0].length) {
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if(pathDescription.size() > 2) {
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pathDescription.erase(pathDescription.begin());
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pathDescription[0].turn_instruction = TurnInstructions.HeadOn;
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pathDescription[0].necessary = true;
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start_phantom.nodeBasedEdgeNameID = pathDescription[0].name_id;
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}
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} else {
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pathDescription[0].duration *= start_phantom.ratio;
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}
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//Generalize poly line
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polyline_generalizer.Run(pathDescription, zoomLevel);
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//fix what needs to be fixed else
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for(unsigned i = 0; i < pathDescription.size()-1 && pathDescription.size() >= 2; ++i){
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if(pathDescription[i].necessary) {
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double angle = GetBearing(pathDescription[i].location, pathDescription[i+1].location);
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pathDescription[i].bearing = angle*10;
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}
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}
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return;
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}
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};
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#endif /* DESCRIPTIONFACTORY_H_ */
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