gfs2img.cpp

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#include <cstdlib>
#include <limits.h>
#include <gmapping/scanmatcher/scanmatcher.h>
#include <gmapping/gridfastslam/gfsreader.h>
#include <qpixmap.h>
#include <qpainter.h>
#include <qimage.h>
#include <qapplication.h>
#include <gmapping/utils/commandline.h>
 
#define MAX_LASER_BEAMS 1024
#define MAX_FILENAME 1024
 
using namespace std;
using namespace GMapping;
using namespace GMapping::GFSReader;
 
inline double min(double a, double b){
        return (a<b)?a:b;
}
 
inline double max(double a, double b){
        return (a>b)?a:b;
}
 
void computeBoundingBox(double& xmin, double& ymin, double& xmax, double& ymax, const LaserRecord& laser, const OrientedPoint& pose, double maxrange){
        double theta=-M_PI/2+pose.theta;
        double theta_step=(laser.readings.size()==180||laser.readings.size()==181)?M_PI/180:M_PI/360;
        for (std::vector<double>::const_iterator it=laser.readings.begin(); it!=laser.readings.end(); it++){
                if (*it<maxrange){
                        xmin=min(xmin,pose.x+*it*cos(theta));
                        ymin=min(ymin,pose.y+*it*sin(theta));
                        xmax=max(xmax,pose.x+*it*cos(theta));
                        ymax=max(ymax,pose.y+*it*sin(theta));
                }
                theta+=theta_step;
        }
}
 
void computeBoundingBox(double& xmin, double& ymin, double& xmax, double& ymax, const RecordList& rl, double maxrange){
        xmin = ymin = MAXDOUBLE;
        xmax = ymax =-MAXDOUBLE;
        const LaserRecord* lastLaser=0;
        for (RecordList::const_iterator it=rl.begin(); it!=rl.end(); it++){
                const LaserRecord* lr= dynamic_cast<const LaserRecord*>(*it);
                if (lr){
                        lastLaser=lr;
                        continue;
                }
                const ScanMatchRecord* smr= dynamic_cast<const ScanMatchRecord*>(*it);
                if (smr && lastLaser){
                        for (std::vector<OrientedPoint>::const_iterator pit=smr->poses.begin(); pit!=smr->poses.end(); pit++){
                                computeBoundingBox(xmin, ymin, xmax, ymax, *lastLaser, *pit, maxrange);
                        }
                }
        }
}
int main(int argc, char** argv){
        QApplication app(argc, argv);
        double maxrange=50;
        double delta=0.1;
        int scanSkip=5;
        const char* filename=0;
        const char* format="PNG";
        CMD_PARSE_BEGIN(1, argc)
                parseDouble("-maxrange", maxrange);
                parseDouble("-delta", delta);
                parseInt("-skip", scanSkip);
                parseString("-filename",filename);
                parseString("-format",format);
        CMD_PARSE_END
        
        double maxUrange=maxrange;
        if (! filename){
                cout << " supply a gfs file, please" << endl;
                cout << " usage gfs2img [options] -filename <gfs_file>" << endl;
                cout << " [options]:" << endl;
                cout << " -maxrange <range>" << endl;
                cout << " -delta    <map cell size>" << endl;
                cout << " -skip     <frames to skip among images>" << endl;
                cout << " -format   <image format in capital letters>" << endl;
                return -1;
        }
        ifstream is(filename);
        if (!is){
                cout << " supply an EXISTING gfs file, please" << endl;
                return -1;
        }
        RecordList rl;
        rl.read(is);
        
        int particles=0;
        int beams=0;
        for (RecordList::const_iterator it=rl.begin(); it!=rl.end(); it++){
                const OdometryRecord* odometry=dynamic_cast<const OdometryRecord*>(*it);
                if (odometry){
                        particles=odometry->dim;
                }
                const LaserRecord* s=dynamic_cast<const LaserRecord*>(*it);
                if (s){
                        beams=s->readings.size();
                }
                if (particles && beams)
                        break;
        }
        cout << "Particles from gfs=" << particles << endl;
        if (! particles){
                cout << "no particles found, terminating" << endl;
                return -1;
        }
        cout << "Laser beams from gfs=" << beams << endl;
        if (! beams){
                cout << "0 beams found, terminating" << endl;
                return -1;
        }
        
        
        double laserBeamStep=0;
        if (beams==180||beams==181){
                laserBeamStep=M_PI/180;
        } else if (beams==360||beams==361){
                laserBeamStep=M_PI/360;
        }
        cout << "Laser beam step" << laserBeamStep << endl;
        if (laserBeamStep==0){
                cout << "Invalid Beam Step, terminating" << endl;
                return -1;
        }
        double laserAngles[MAX_LASER_BEAMS];
        double theta=-M_PI/2;
        for (int i=0; i<beams; i++){
                laserAngles[i]=theta;
                theta+=laserBeamStep;
        }
 
        ScanMatcher matcher;
        matcher.setLaserParameters(beams, laserAngles, OrientedPoint(0,0,0));
        matcher.setlaserMaxRange(maxrange);
        matcher.setusableRange(maxUrange);
        matcher.setgenerateMap(true);
        
        double xmin, ymin, xmax, ymax;
        cout << "computing bounding box" << endl;
        computeBoundingBox(xmin, ymin, xmax, ymax, rl, maxrange);
        cout << "DONE" << endl << "BBOX= " << xmin << " " << ymin << " " << xmax << " " << ymax << endl;
 
        Point center;
        center.x=(xmin+xmax)/2.;
        center.y=(ymin+ymax)/2.;
                
        cout << "computing paths" << endl;
        unsigned int frame=0;
        int scanCount=0;
        
        for (RecordList::const_iterator it=rl.begin(); it!=rl.end(); it++){
                const ScanMatchRecord* s=dynamic_cast<const ScanMatchRecord*>(*it);
                if (!s) 
                        continue;
                scanCount++;
                if (scanCount%scanSkip)
                        continue;
                cout << "Frame " << frame << " ";
                std::vector<RecordList> paths(particles);
                int bestIdx=0;
                double bestWeight=-MAXDOUBLE;
                for (int p=0; p<particles; p++){
                        paths[p]=rl.computePath(p,it);
                        double w=rl.getLogWeight(p,it);
                        if (w>bestWeight){
                                bestWeight=w;
                                bestIdx=p;
                        }
                }
                cout << "bestIdx=" << bestIdx << " bestWeight=" << bestWeight << endl;
                
                cout << "computing best map" << endl;
                ScanMatcherMap smap(center, xmin, ymin, xmax, ymax, delta);
                int count=0;
                for (RecordList::const_iterator mt=paths[bestIdx].begin(); mt!=paths[bestIdx].end(); mt++){
                        const LaserRecord* s=dynamic_cast<const LaserRecord*>(*mt);
                        if (s){
                                double rawreadings[MAX_LASER_BEAMS];
                                for (uint i=0; i<s->readings.size(); i++)
                                        rawreadings[i]=s->readings[i];
                                matcher.invalidateActiveArea();
                                matcher.computeActiveArea(smap, s->pose, rawreadings);
//                              matcher.allocActiveArea(smap, s->pose, rawreadings);
                                matcher.registerScan(smap, s->pose, rawreadings);
                                count++;
                        }
                }
                cout << "DONE " << count <<endl;
 
                QPixmap pixmap(smap.getMapSizeX(), smap.getMapSizeY());
                pixmap.fill(QColor(200, 200, 255));
                QPainter painter(&pixmap);
                for (int x=0; x<smap.getMapSizeX(); x++)
                        for (int y=0; y<smap.getMapSizeY(); y++){
                                double v=smap.cell(x,y);
                                if (v>=0){
                                        int grayValue=255-(int)(255.*v);
                                        painter.setPen(QColor(grayValue, grayValue, grayValue));
                                        painter.drawPoint(x,smap.getMapSizeY()-y-1);
                                }
                        }
                
                /*
                cout << "painting trajectories" << endl;
                for (int p=0; p<particles; p++){
                        painter.setPen(QColor(Qt::red));
                        if (p==bestIdx)
                                continue;
                        bool first=true;
                        IntPoint oldPoint(0,0);
                        for (RecordList::const_iterator mt=paths[p].begin(); mt!=paths[p].end(); mt++){
                                const LaserRecord* s=dynamic_cast<const LaserRecord*>(*mt);
                                if (s){
                                        IntPoint ip=smap.world2map(s->pose);
                                        ip.y=smap.getMapSizeY()-ip.y-1;
                                        if (!first){
                                                painter.drawLine( oldPoint.x, oldPoint.y, ip.x, ip.y);
                                        }
                                        oldPoint=ip;
                                        first=false;
                                }
                        }       
                        paths[p].destroyReferences();;
                }
                painter.setPen(QColor(Qt::black));
                bool first=true;
                IntPoint oldPoint(0,0);
                for (RecordList::const_iterator mt=paths[bestIdx].begin(); mt!=paths[bestIdx].end(); mt++){
                        const LaserRecord* s=dynamic_cast<const LaserRecord*>(*mt);
                        if (s){
                                IntPoint ip=smap.world2map(s->pose);
                                ip.y=smap.getMapSizeY()-ip.y-1;
                                if (!first){
                                        painter.drawLine( oldPoint.x, oldPoint.y, ip.x, ip.y);
                                } 
                                oldPoint=ip;
                                first=false;
                        }
                }       
                paths[bestIdx].destroyReferences();;
                */
                cout << " DONE" << endl;
                cout << "writing image" << endl;
                QImage img=pixmap.convertToImage();
                char ofilename[MAX_FILENAME];
                sprintf(ofilename,"%s-%.4d.%s",filename, frame, format);
                cout << ofilename << endl;
                img.save(QString(ofilename), format,0);
                frame++;
                
        }
        cout << "For Cyrill: \"The Evil is Outside\"" << endl;
}