kml_path_creator.cpp

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#include <iostream>
#include <kml/dom.h>

#include <string>
#include <stdio.h>
#include <string.h>
#include <math.h>

using namespace std;

// libkml types are in the kmldom namespace
using kmldom::CoordinatesPtr;
using kmldom::KmlPtr;
using kmldom::KmlFactory;
using kmldom::PlacemarkPtr;
using kmldom::PointPtr;
using kmldom::DocumentPtr;
using kmldom::LineStringPtr;

int main(int argc,char**argv)
{
        
        if(argc>2)
        {
                if(strcmp(argv[2],"conv")==0)
                {
                        double ox=atof(argv[3]);
                        double oy=atof(argv[4]);
                        double theta=atof(argv[5]);
                        
                        FILE*fp=fopen(argv[1],"r");
                        if(!fp)
                        {
                                perror("Unable to open file");
                                return 1;
                        }
                                                
                        char s[1024];
                        double x,y;
                        double nx,ny;

                        while(fgets(s,1024,fp))
                        {
                                sscanf(s,"%lf %lf",&x,&y);
                                
                                nx=x*cos(theta)-y*sin(theta);
                                ny=x*sin(theta)+y*cos(theta);
                                
                                nx+=ox;
                                ny+=oy;
                                
                                printf("%f\t%f\n",nx,ny);
                        }               
                        return 0;
                }
        }
        
        if(argc==2)
        {
                //Create kml from file with lat, lon
                
                // Get the factory singleton to create KML elements.
                KmlFactory* factory = KmlFactory::GetFactory();
                DocumentPtr document = factory->CreateDocument();
                
                // Line
                PlacemarkPtr linePlacemark = factory->CreatePlacemark();
                linePlacemark->set_name("Line");
                
                CoordinatesPtr lineCoordinates = factory->CreateCoordinates();
                
                FILE*fp=fopen(argv[1],"r");
                if(!fp)
                {
                        perror("Unable to open file");
                        return 0;
                }
                
                char s[1024];
                double lat,lon;
                while(fgets(s,1024,fp))
                {
                        sscanf(s,"%lf %lf",&lat,&lon);
                        lineCoordinates->add_latlng(lat,lon);
                }
                
                LineStringPtr lineString = factory->CreateLineString();
                lineString->set_coordinates(lineCoordinates);
                lineString->set_extrude(false);
                lineString->set_altitudemode(kmldom::ALTITUDEMODE_RELATIVETOGROUND);
                lineString->set_tessellate(false);
                
                linePlacemark->set_geometry(lineString);                
                document->add_feature(linePlacemark);
                
                // Create <kml> and give it <Placemark>.
                KmlPtr kml = factory->CreateKml();
                
                kml->set_feature(document);
                
                // Serialize to XML
                std::string xml = kmldom::SerializePretty(kml);
                
                // Print to stdout
                std::cout << xml;
                
                return 0;
        }
        
        cout<<"Malformed command"<<endl;
        return 0;
}