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Method_I.cpp
Method_I.cpp 29.94 KiB
/**
* \file Method_I.cpp
* \date Feb 07, 2019
* \version v0.8
* \copyright <2009-2019> Forschungszentrum Jülich GmbH. All rights reserved.
*
* \section License
* This file is part of JuPedSim.
*
* JuPedSim is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* JuPedSim 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 Lesser General Public License
* along with JuPedSim. If not, see <http://www.gnu.org/licenses/>.
*
* \section Description
* In this file functions related to method I are defined.
*
*
**/
#include "Method_I.h"
#include <cmath>
#include<map>
#include<iostream>
#include<vector>
#include <tuple>
//using std::string;
//using std::vector;
//using std::ofstream;
using namespace std;
Method_I::Method_I()
{
_grid_size_X = 0.10;
_grid_size_Y = 0.10;
_fps=16;
_outputVoronoiCellData = false;
_getProfile = false;
_geoMinX = 0;
_geoMinY = 0;
_geoMaxX = 0;
_geoMaxY = 0;
_cutByCircle = false;
_cutRadius = -1;
_circleEdges = -1;
_fIndividualFD = nullptr;
_calcIndividualFD = false;
_fVoronoiRhoV = nullptr;
_areaForMethod_I = nullptr;
_plotVoronoiCellData=false;
_isOneDimensional=false;
_startFrame =-1;
_stopFrame = -1;
}
Method_I::~Method_I()
{
}
// auto outOfRange = [&](int number, int start, int end) -> bool// {
// return (number < start || number > end);
// };
bool Method_I::Process (const PedData& peddata,const fs::path& scriptsLocation, const double& zPos_measureArea)
{
bool return_value = true;
_scriptsLocation = scriptsLocation;
_outputLocation = peddata.GetOutputLocation();
_peds_t = peddata.GetPedsFrame();
_trajName = peddata.GetTrajName();
_projectRootDir = peddata.GetProjectRootDir();
_measureAreaId = boost::lexical_cast<string>(_areaForMethod_I->_id);
_fps =peddata.GetFps();
int mycounter = 0;
int minFrame = peddata.GetMinFrame();
Log->Write("INFO:\tMethod D: frame rate fps: <%.2f>, start: <%d>, stop: <%d> (minFrame = %d)", _fps, _startFrame, _stopFrame, minFrame);
if(_startFrame != _stopFrame)
{
if(_startFrame==-1)
{
_startFrame = minFrame;
}
if(_stopFrame==-1)
{
_stopFrame = peddata.GetNumFrames()+minFrame;
}
for(std::map<int , std::vector<int> >::iterator ite=_peds_t.begin();ite!=_peds_t.end();)
{
if((ite->first + minFrame)<_startFrame || (ite->first + minFrame) >_stopFrame)
{
mycounter++;
ite = _peds_t.erase(ite);
}
else
{
++ite;
}
}
}
if(!OpenFileMethodD())
{
return_value = false;
}
if(_calcIndividualFD)
{
if (!OpenFileIndividualFD())
{
return_value = false;
}
}
Log->Write("------------------------Analyzing with Method D-----------------------------");
//for(int frameNr = 0; frameNr < peddata.GetNumFrames(); frameNr++ )
//for(std::map<int , std::vector<int> >::iterator ite=_peds_t.begin();ite!=_peds_t.end();ite++)
for(auto ite: _peds_t)
{
int frameNr = ite.first;
int frid = frameNr + minFrame;
//padd the frameid with 0
std::ostringstream ss;
ss << std::setw(5) << std::setfill('0') << std::internal << frid;
const std::string str_frid = ss.str();
if(!(frid%50))
{
Log->Write("INFO:\tframe ID = %d",frid);
}
vector<int> ids=_peds_t[frameNr];
vector<int> IdInFrame = peddata.GetIdInFrame(frameNr, ids, zPos_measureArea); vector<double> XInFrame = peddata.GetXInFrame(frameNr, ids, zPos_measureArea);
vector<double> YInFrame = peddata.GetYInFrame(frameNr, ids, zPos_measureArea);
vector<double> VInFrame = peddata.GetVInFrame(frameNr, ids, zPos_measureArea);
//vector int to_remove
//------------------------------Remove peds outside geometry------------------------------------------
for( int i=0;i<(int)IdInFrame.size();i++)
{
if(false==within(point_2d(round(XInFrame[i]), round(YInFrame[i])), _geoPoly))
{
Log->Write("Warning:\tPedestrian at <x=%.4f, y=%.4f> is not in geometry and not considered in analysis!", XInFrame[i]*CMtoM, YInFrame[i]*CMtoM );
IdInFrame.erase(IdInFrame.begin() + i);
XInFrame.erase(XInFrame.begin() + i);
YInFrame.erase(YInFrame.begin() + i);
VInFrame.erase(VInFrame.begin() + i);
i--;
}
}
int NumPeds = IdInFrame.size();
//---------------------------------------------------------------------------------------------------------------
if(NumPeds>3)
{
if(_isOneDimensional)
{
CalcVoronoiResults1D(XInFrame, VInFrame, IdInFrame, _areaForMethod_I->_poly,str_frid);
}
else
{
if(IsPointsOnOneLine(XInFrame, YInFrame))
{
if(fabs(XInFrame[1]-XInFrame[0])<dmin)
{
XInFrame[1]+= offset;
}
else
{
YInFrame[1]+= offset;
}
}
std::vector<std::pair<polygon_2d, int> > polygons_id = GetPolygons(XInFrame, YInFrame, VInFrame, IdInFrame);
// std::cout << ">> polygons_id " << polygons_id.size() << "\n";
vector<polygon_2d> polygons;
for (auto p: polygons_id)
polygons.push_back(p.first);
if(!polygons.empty())
{
OutputVoronoiResults(polygons, str_frid, VInFrame); // TODO polygons_id
if(_calcIndividualFD)
{
if(!_isOneDimensional)
{
GetIndividualFD(polygons,VInFrame, IdInFrame, _areaForMethod_I->_poly, str_frid); // TODO polygons_id
}
}
if(_getProfile)
{ // field analysis
GetProfiles(str_frid, polygons, VInFrame); // TODO polygons_id
}
if(_outputVoronoiCellData)
{ // output the Voronoi polygons of a frame
OutputVoroGraph(str_frid, polygons_id, NumPeds, XInFrame, YInFrame,VInFrame);
}
}
else
{
for(int i=0;i<(int)IdInFrame.size();i++)
{
std::cout << XInFrame[i]*CMtoM << " " << YInFrame[i]*CMtoM << " " << IdInFrame[i] << "\n";
}
Log->Write("WARNING: \tVoronoi Diagrams are not obtained!. Frame: %d (minFrame = %d)\n", frid, minFrame); }
}
} // if N >3
else
{
Log->Write("INFO: \tThe number of the pedestrians is small (%d). Frame = %d (minFrame = %d)\n", NumPeds, frid, minFrame);
}
}
fclose(_fVoronoiRhoV);
if(_calcIndividualFD)
{
fclose(_fIndividualFD);
}
return return_value;
}
bool Method_I::OpenFileMethodD()
{
std::string voroLocation(VORO_LOCATION);
fs::path tmp("_id_"+_measureAreaId+".dat");
tmp = _outputLocation / voroLocation / ("rho_v_Voronoi_" + _trajName.string() + tmp.string());
// _outputLocation.string() + voroLocation+"rho_v_Voronoi_"+_trajName+"_id_"+_measureAreaId+".dat";
string results_V= tmp.string();
if((_fVoronoiRhoV=Analysis::CreateFile(results_V))==nullptr)
{
Log->Write("ERROR: \tcannot open the file to write Voronoi density and velocity\n");
return false;
}
else
{
if(_isOneDimensional)
{
fprintf(_fVoronoiRhoV,"#framerate:\t%.2f\n\n#Frame \t Voronoi density(m^(-1))\t Voronoi velocity(m/s)\n",_fps);
}
else
{
fprintf(_fVoronoiRhoV,"#framerate:\t%.2f\n\n#Frame \t Voronoi density(m^(-2))\t Voronoi velocity(m/s)\n",_fps);
}
return true;
}
}
bool Method_I::OpenFileIndividualFD()
{
fs::path trajFileName("_id_"+_measureAreaId+".dat");
fs::path indFDPath("Fundamental_Diagram");
indFDPath = _outputLocation / indFDPath / "IndividualFD" / (_trajName.string() + trajFileName.string());
string Individualfundment=indFDPath.string();
if((_fIndividualFD=Analysis::CreateFile(Individualfundment))==nullptr)
{
Log->Write("ERROR:\tcannot open the file individual\n");
return false;
}
else
{
if(_isOneDimensional)
{
fprintf(_fIndividualFD,"#framerate (fps):\t%.2f\n\n#Frame \t PedId \t Individual density(m^(-1)) \t Individual velocity(m/s) \t Headway(m)\n",_fps);
}
else
{
fprintf(_fIndividualFD,"#framerate (fps):\t%.2f\n\n#Frame \t PedId \t Individual density(m^(-2)) \t Individual velocity(m/s) \t Voronoi Polygon \t Intersection Polygon\n",_fps);
}
return true;
}
}
std::vector<std::pair<polygon_2d, int> > Method_I::GetPolygons(vector<double>& XInFrame, vector<double>& YInFrame, vector<double>& VInFrame, vector<int>& IdInFrame)
{
VoronoiDiagram vd;
//int NrInFrm = ids.size();
double boundpoint =10*max(max(fabs(_geoMinX),fabs(_geoMinY)), max(fabs(_geoMaxX), fabs(_geoMaxY)));
std::vector<std::pair<polygon_2d, int> > polygons_id;
polygons_id = vd.getVoronoiPolygons(XInFrame, YInFrame, VInFrame,IdInFrame, boundpoint);
// std:: cout << " GetPolygons " << polygons_id.size() << "\n";
polygon_2d poly ;
if(_cutByCircle)
{
polygons_id = vd.cutPolygonsWithCircle(polygons_id, XInFrame, YInFrame, _cutRadius,_circleEdges);
}
// std:: cout << " GetPolygons cirlces " << polygons_id.size() << "\n";
polygons_id = vd.cutPolygonsWithGeometry(polygons_id, _geoPoly, XInFrame, YInFrame);
// std:: cout << " GetPolygons geometry " << polygons_id.size() << "\n";
for(auto && p:polygons_id)
{
poly = p.first;
ReducePrecision(poly);
// TODO update polygon_id?
}
// std:: cout << " GetPolygons leave " << polygons_id.size() << "\n";
return polygons_id;
}
/**
* Output the Voronoi density and velocity in the corresponding file
*/
void Method_I::OutputVoronoiResults(const vector<polygon_2d>& polygons, const string& frid, const vector<double>& VInFrame)
{
double VoronoiVelocity=1;
double VoronoiDensity=-1;
std::tie(VoronoiDensity, VoronoiVelocity) = GetVoronoiDensityVelocity(polygons,VInFrame,_areaForMethod_I->_poly);
fprintf(_fVoronoiRhoV,"%s\t%.3f\t%.3f\n",frid.c_str(),VoronoiDensity, VoronoiVelocity);
}
/*
* calculate the voronoi density and velocity according to voronoi cell of each pedestrian and their instantaneous velocity "Velocity".
* input: voronoi cell and velocity of each pedestrian and the measurement area
* output: the voronoi density and velocity in the measurement area (tuple)
*/
std::tuple<double,double> Method_I::GetVoronoiDensityVelocity(const vector<polygon_2d>& polygon, const vector<double>& Velocity, const polygon_2d & measureArea)
{
double meanV=0;
double density=0;
int temp=0;
for (auto && polygon_iterator:polygon)
{
polygon_list v;
intersection(measureArea, polygon_iterator, v);
if(!v.empty())
{
meanV+=Velocity[temp]*area(v[0]);
density+=area(v[0])/area(polygon_iterator);
if((area(v[0]) - area(polygon_iterator))>J_EPS)
{
std::cout<<"----------------------Now calculating density-velocity!!!-----------------\n ";
std::cout<<"measure area: \t"<<std::setprecision(16)<<dsv(measureArea)<<"\n";
std::cout<<"Original polygon:\t"<<std::setprecision(16)<<dsv(polygon_iterator)<<"\n";
std::cout<<"intersected polygon: \t"<<std::setprecision(16)<<dsv(v[0])<<"\n";
std::cout<<"this is a wrong result in density calculation\t "<<area(v[0])<<'\t'<<area(polygon_iterator)<< " (diff=" << (area(v[0]) - area(polygon_iterator)) << ")" << "\n";
}
}
temp++;
}
meanV = meanV/area(measureArea);
density = density/(area(measureArea)*CMtoM*CMtoM);
return std::make_tuple(density, meanV);
}// and velocity is calculated for every frame
void Method_I::GetProfiles(const string& frameId, const vector<polygon_2d>& polygons, const vector<double>& velocity)
{
std::string voroLocation(VORO_LOCATION);
fs::path tmp("field");
fs::path vtmp ("velocity");
fs::path dtmp("density");
tmp = _outputLocation / voroLocation / tmp;
vtmp = tmp / vtmp / ("Prf_v_"+_trajName.string()+"_id_"+_measureAreaId+"_"+frameId+".dat");
dtmp = tmp / dtmp / ("Prf_d_"+_trajName.string()+"_id_"+_measureAreaId+"_"+frameId+".dat");
//string voronoiLocation=_outputLocation.string() + voroLocation+"field/";
// string Prfvelocity=voronoiLocation+"/velocity/Prf_v_"+_trajName.string()+"_id_"+_measureAreaId+"_"+frameId+".dat";
// string Prfdensity=voronoiLocation+"/density/Prf_d_"+_trajName.string()+"_id_"+_measureAreaId+"_"+frameId+".dat";
string Prfvelocity = vtmp.string();
string Prfdensity = dtmp.string();
FILE *Prf_velocity;
if((Prf_velocity=Analysis::CreateFile(Prfvelocity))==nullptr) {
Log->Write("cannot open the file <%s> to write the field data\n",Prfvelocity.c_str());
exit(EXIT_FAILURE);
}
FILE *Prf_density;
if((Prf_density=Analysis::CreateFile(Prfdensity))==nullptr) {
Log->Write("cannot open the file to write the field density\n");
exit(EXIT_FAILURE);
}
int NRow = (int)ceil((_geoMaxY-_geoMinY)/_grid_size_Y); // the number of rows that the geometry will be discretized for field analysis
int NColumn = (int)ceil((_geoMaxX-_geoMinX)/_grid_size_X); //the number of columns that the geometry will be discretized for field analysis
for(int row_i=0; row_i<NRow; row_i++) { //
for(int colum_j=0; colum_j<NColumn; colum_j++) {
polygon_2d measurezoneXY;
{
const double coor[][2] = {
{_geoMinX+colum_j*_grid_size_X,_geoMaxY-row_i*_grid_size_Y}, {_geoMinX+colum_j*_grid_size_X+_grid_size_X,_geoMaxY-row_i*_grid_size_Y}, {_geoMinX+colum_j*_grid_size_X+_grid_size_X, _geoMaxY-row_i*_grid_size_Y-_grid_size_Y},
{_geoMinX+colum_j*_grid_size_X, _geoMaxY-row_i*_grid_size_Y-_grid_size_Y},
{_geoMinX+colum_j*_grid_size_X,_geoMaxY-row_i*_grid_size_Y} // closing point is opening point
};
assign_points(measurezoneXY, coor);
}
correct(measurezoneXY); // Polygons should be closed, and directed clockwise. If you're not sure if that is the case, call this function
double densityXY;
double velocityXY;
std::tie(densityXY, velocityXY) = GetVoronoiDensityVelocity(polygons,velocity,measurezoneXY);
fprintf(Prf_density,"%.3f\t",densityXY);
fprintf(Prf_velocity,"%.3f\t",velocityXY);
}
fprintf(Prf_density,"\n");
fprintf(Prf_velocity,"\n");
}
fclose(Prf_velocity);
fclose(Prf_density);
}
void Method_I::OutputVoroGraph(const string & frameId, std::vector<std::pair<polygon_2d, int> >& polygons_id, int numPedsInFrame, vector<double>& XInFrame, vector<double>& YInFrame,const vector<double>& VInFrame)
{
//string voronoiLocation=_projectRootDir+"./Output/Fundamental_Diagram/Classical_Voronoi/VoronoiCell/id_"+_measureAreaId;
fs::path voroLocPath(_outputLocation);
fs::path voro_location_path (VORO_LOCATION); // TODO: convert
// this MACRO to
// path. Maybe
// remove the MACRO?
voroLocPath = voroLocPath / voro_location_path / "VoronoiCell";
polygon_2d poly;
if(!fs::exists(voroLocPath))
{
if(!fs::create_directories(voroLocPath)) {
Log->Write("ERROR:\tcan not create directory <%s>", voroLocPath.string().c_str());
std::cout << "can not create directory "<< voroLocPath.string().c_str() << "\n";
exit(EXIT_FAILURE);
}
else
std::cout << "create directory "<< voroLocPath.string().c_str() << "\n";
}
fs::path polygonPath=voroLocPath / "polygon";
if(!fs::exists(polygonPath))
{
if(!fs::create_directory(polygonPath))
{
Log->Write("ERROR:\tcan not create directory <%s>", polygonPath.string().c_str());
exit(EXIT_FAILURE);
}
}
fs::path trajFileName(_trajName.string()+"_id_"+_measureAreaId+"_"+frameId+".dat");
fs::path p = polygonPath / trajFileName;
string polygon = p.string();
ofstream polys (polygon.c_str());
if(polys.is_open())
{
//for(vector<polygon_2d> polygon_iterator=polygons.begin(); polygon_iterator!=polygons.end(); polygon_iterator++)
for(auto && p:polygons_id)
{
poly = p.first;
for(auto&& point:poly.outer())
{
point.x(point.x()*CMtoM);
point.y(point.y()*CMtoM);
}
for(auto&& innerpoly:poly.inners())
{
for(auto&& point:innerpoly)
{
point.x(point.x()*CMtoM);
point.y(point.y()*CMtoM);
}
}
polys << p.second << " | " << dsv(poly) << endl;
//polys <<dsv(poly)<< endl;
}
}
else
{
Log->Write("ERROR:\tcannot create the file <%s>",polygon.c_str());
exit(EXIT_FAILURE);
}
fs::path speedPath=voroLocPath / "speed";
if(!fs::exists(speedPath))
if(!fs::create_directory(speedPath))
{
Log->Write("ERROR:\tcan not create directory <%s>", speedPath.string().c_str());
exit(EXIT_FAILURE);
}
fs::path pv = speedPath /trajFileName;
string v_individual= pv.string();
ofstream velo (v_individual.c_str());
if(velo.is_open())
{
for(int pts=0; pts<numPedsInFrame; pts++)
{
velo << fabs(VInFrame[pts]) << endl;
}
}
else
{ Log->Write("ERROR:\tcannot create the file <%s>",pv.string().c_str());
exit(EXIT_FAILURE);
}
/*string point=voronoiLocation+"/points"+_trajName+"_id_"+_measureAreaId+"_"+frameId+".dat";
ofstream points (point.c_str());
if( points.is_open())
{
for(int pts=0; pts<numPedsInFrame; pts++)
{
points << XInFrame[pts]*CMtoM << "\t" << YInFrame[pts]*CMtoM << endl;
}
}
else
{
Log->Write("ERROR:\tcannot create the file <%s>",point.c_str());
exit(EXIT_FAILURE);
}*/
if(_plotVoronoiCellData)
{
//@todo: use fs::path
string parameters_rho=" " + _scriptsLocation.string()+"/_Plot_cell_rho.py -f \""+ voroLocPath.string() + "\" -n "+ _trajName.string()+"_id_"+_measureAreaId+"_"+frameId+
" -g "+_geometryFileName.string()+" -p "+_trajectoryPath.string();
string parameters_v=" " + _scriptsLocation.string()+"/_Plot_cell_v.py -f \""+ voroLocPath.string() + "\" -n "+ _trajName.string() + "_id_"+_measureAreaId+"_"+frameId+
" -g "+_geometryFileName.string()+" -p "+_trajectoryPath.string();
if(_plotVoronoiIndex)
parameters_rho += " -i";
Log->Write("INFO:\t%s",parameters_rho.c_str());
Log->Write("INFO:\tPlotting Voronoi Cell at the frame <%s>",frameId.c_str());
parameters_rho = PYTHON + parameters_rho;
parameters_v = PYTHON + parameters_v;
system(parameters_rho.c_str());
system(parameters_v.c_str());
}
//points.close();
polys.close();
velo.close();
}
/*std::string polygon_to_string2(const polygon_2d & polygon)
{
string polygon_str = "((";
for(auto point: boost::geometry::exterior_ring(polygon) )
{
double x = boost::geometry::get<0>(point);
double y = boost::geometry::get<1>(point);
polygon_str.append("(");
polygon_str.append(std::to_string(x));
polygon_str.append(", ");
polygon_str.append(std::to_string(y));
polygon_str.append("), ");
}
for(auto ring: boost::geometry::interior_rings(polygon) )
{
for(auto point: ring )
{
double x = boost::geometry::get<0>(point);
double y = boost::geometry::get<1>(point);
polygon_str.append("(");
polygon_str.append(std::to_string(x));
polygon_str.append(", ");
polygon_str.append(std::to_string(y));
polygon_str.append("), ");
}
}
polygon_str.pop_back(); polygon_str.pop_back(); //remove last komma
polygon_str.append("))"); return polygon_str;
}*/
void Method_I::GetIndividualFD(const vector<polygon_2d>& polygon, const vector<double>& Velocity, const vector<int>& Id, const polygon_2d& measureArea, const string& frid)
{
double uniquedensity=0;
double uniquevelocity=0;
int uniqueId=0;
int temp=0;
for (const auto & polygon_iterator:polygon)
{
polygon_list v;
intersection(measureArea, polygon_iterator, v);
if(!v.empty()) {
string polygon_str = polygon_to_string(polygon_iterator);
// string measureArea_str =
// polygon_to_string(measureArea); // maybe used for debugging
string v_str = polygon_to_string(v[0]);
uniquedensity=1.0/(area(polygon_iterator)*CMtoM*CMtoM);
uniquevelocity=Velocity[temp];
uniqueId=Id[temp];
fprintf(_fIndividualFD,"%s\t%d\t%.3f\t%.3f\t%s\t%s\n",
frid.c_str(),
uniqueId,
uniquedensity,
uniquevelocity,
polygon_str.c_str(),
v_str.c_str());
}
temp++;
}
}
void Method_I::SetCalculateIndividualFD(bool individualFD)
{
_calcIndividualFD = individualFD;
}
void Method_I::SetStartFrame(int startFrame)
{
_startFrame=startFrame;
}
void Method_I::SetStopFrame(int stopFrame)
{
_stopFrame=stopFrame;
}
void Method_I::Setcutbycircle(double radius,int edges)
{
_cutByCircle=true;
_cutRadius = radius;
_circleEdges = edges;
}
void Method_I::SetGeometryPolygon(polygon_2d geometryPolygon)
{
_geoPoly = geometryPolygon;
}
void Method_I::SetGeometryBoundaries(double minX, double minY, double maxX, double maxY)
{
_geoMinX = minX;
_geoMinY = minY;
_geoMaxX = maxX;
_geoMaxY = maxY;
}
void Method_I::SetGeometryFileName(const fs::path& geometryFile)
{
_geometryFileName=geometryFile;
}
void Method_I::SetTrajectoriesLocation(const fs::path& trajectoryPath)
{
_trajectoryPath=trajectoryPath;
}
void Method_I::SetGridSize(double x, double y)
{
_grid_size_X = x;
_grid_size_Y = y;
}
void Method_I::SetCalculateProfiles(bool calcProfile)
{
_getProfile =calcProfile;
}
void Method_I::SetOutputVoronoiCellData(bool outputCellData)
{
_outputVoronoiCellData = outputCellData;
}
void Method_I::SetPlotVoronoiGraph(bool plotVoronoiGraph)
{
_plotVoronoiCellData = plotVoronoiGraph;
}
void Method_I::SetPlotVoronoiIndex(bool plotVoronoiIndex)
{
_plotVoronoiIndex = plotVoronoiIndex;
}
void Method_I::SetMeasurementArea (MeasurementArea_B* area)
{
_areaForMethod_I = area;
}
void Method_I::SetDimensional (bool dimension)
{
_isOneDimensional = dimension;
}
void Method_I::ReducePrecision(polygon_2d& polygon)
{
for(auto&& point:polygon.outer())
{
point.x(round(point.x() * 100000000000.0) / 100000000000.0);
point.y(round(point.y() * 100000000000.0) / 100000000000.0);
}
}
bool Method_I::IsPedInGeometry(int frames, int peds, double **Xcor, double **Ycor, int *firstFrame, int *lastFrame)
{
for(int i=0; i<peds; i++)
for(int j =0; j<frames; j++)
{
if (j>firstFrame[i] && j< lastFrame[i] && (false==within(point_2d(round(Xcor[i][j]), round(Ycor[i][j])), _geoPoly)))
{
Log->Write("Error:\tPedestrian at the position <x=%.4f, y=%.4f> is outside geometry. Please check the geometry or trajectory file!", Xcor[i][j]*CMtoM, Ycor[i][j]*CMtoM );
return false;
}
}
return true;
}
void Method_I::CalcVoronoiResults1D(vector<double>& XInFrame, vector<double>& VInFrame, vector<int>& IdInFrame, const polygon_2d & measureArea,const string& frid)
{ vector<double> measurearea_x;
for(unsigned int i=0;i<measureArea.outer().size();i++)
{
measurearea_x.push_back(measureArea.outer()[i].x());
}
double left_boundary=*min_element(measurearea_x.begin(),measurearea_x.end());
double right_boundary=*max_element(measurearea_x.begin(),measurearea_x.end());
vector<double> voronoi_distance;
vector<double> Xtemp=XInFrame;
vector<double> dist;
vector<double> XLeftNeighbor;
vector<double> XLeftTemp;
vector<double> XRightNeighbor;
vector<double> XRightTemp;
sort(Xtemp.begin(),Xtemp.end());
dist.push_back(Xtemp[1]-Xtemp[0]);
XLeftTemp.push_back(2*Xtemp[0]-Xtemp[1]);
XRightTemp.push_back(Xtemp[1]);
for(unsigned int i=1;i<Xtemp.size()-1;i++)
{
dist.push_back((Xtemp[i+1]-Xtemp[i-1])/2.0);
XLeftTemp.push_back(Xtemp[i-1]);
XRightTemp.push_back(Xtemp[i+1]);
}
dist.push_back(Xtemp[Xtemp.size()-1]-Xtemp[Xtemp.size()-2]);
XLeftTemp.push_back(Xtemp[Xtemp.size()-2]);
XRightTemp.push_back(2*Xtemp[Xtemp.size()-1]-Xtemp[Xtemp.size()-2]);
for(unsigned int i=0;i<XInFrame.size();i++)
{
for(unsigned int j=0;j<Xtemp.size();j++)
{
if(fabs(XInFrame[i]-Xtemp[j])<1.0e-5)
{
voronoi_distance.push_back(dist[j]);
XLeftNeighbor.push_back(XLeftTemp[j]);
XRightNeighbor.push_back(XRightTemp[j]);
break;
}
}
}
double VoronoiDensity=0;
double VoronoiVelocity=0;
for(unsigned int i=0; i<XInFrame.size(); i++)
{
double ratio=getOverlapRatio((XInFrame[i]+XLeftNeighbor[i])/2.0, (XRightNeighbor[i]+XInFrame[i])/2.0,left_boundary,right_boundary);
VoronoiDensity+=ratio;
VoronoiVelocity+=(VInFrame[i]*voronoi_distance[i]*ratio*CMtoM);
if(_calcIndividualFD)
{
double headway=(XRightNeighbor[i] - XInFrame[i])*CMtoM;
double individualDensity = 2.0/((XRightNeighbor[i] - XLeftNeighbor[i])*CMtoM);
fprintf(_fIndividualFD,"%s\t%d\t%.3f\t%.3f\t%.3f\n",frid.c_str(), IdInFrame[i], individualDensity,VInFrame[i], headway);
}
}
VoronoiDensity/=((right_boundary-left_boundary)*CMtoM);
VoronoiVelocity/=((right_boundary-left_boundary)*CMtoM);
fprintf(_fVoronoiRhoV,"%s\t%.3f\t%.3f\n",frid.c_str(),VoronoiDensity, VoronoiVelocity);
}
double Method_I::getOverlapRatio(const double& left, const double& right, const double& measurearea_left, const double& measurearea_right)
{
double OverlapRatio=0;
double PersonalSpace=right-left;
if(left > measurearea_left && right < measurearea_right) //case1
{
OverlapRatio=1;
} else if(right > measurearea_left && right < measurearea_right && left < measurearea_left)
{
OverlapRatio=(right-measurearea_left)/PersonalSpace;
}
else if(left < measurearea_left && right > measurearea_right)
{
OverlapRatio=(measurearea_right - measurearea_left)/PersonalSpace;
}
else if(left > measurearea_left && left < measurearea_right && right > measurearea_right)
{
OverlapRatio=(measurearea_right-left)/PersonalSpace;
}
return OverlapRatio;
}
bool Method_I::IsPointsOnOneLine(vector<double>& XInFrame, vector<double>& YInFrame)
{
double deltaX=XInFrame[1] - XInFrame[0];
bool isOnOneLine=true;
if(fabs(deltaX)<dmin)
{
for(unsigned int i=2; i<XInFrame.size();i++)
{
if(fabs(XInFrame[i] - XInFrame[0])> dmin)
{
isOnOneLine=false;
break;
}
}
}
else
{
double slope=(YInFrame[1] - YInFrame[0])/deltaX;
double intercept=YInFrame[0] - slope*XInFrame[0];
for(unsigned int i=2; i<XInFrame.size();i++)
{
double dist=fabs(slope*XInFrame[i] - YInFrame[i] + intercept)/sqrt(slope*slope +1);
if(dist > dmin)
{
isOnOneLine=false;
break;
}
}
}
return isOnOneLine;
}