dvereb/GPX-Visualizer
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This commit is contained in:
David Vereb 2021-03-13 18:55:00 -05:00
parent 508cf7238e
commit a5175799ba
1 changed files with 66 additions and 71 deletions
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137
main.cpp
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@ -1,3 +1,5 @@
#include "rapidxml.hpp"
#include <GL/glut.h> #include <GL/glut.h>
#include <experimental/filesystem> #include <experimental/filesystem>
@ -20,6 +22,65 @@ struct Point {
static std::vector<std::vector<Point> > tracks; static std::vector<std::vector<Point> > tracks;
bool ParseFile(std::vector<std::vector<Point>> &out_tracks,
const std::string &file_and_path)
{
std::ifstream ifs(file_and_path);
if(!ifs.is_open())
{
std::cerr << "Couldn't open " << file_and_path << "." << std::endl;
return -2;
}
std::string line = "";
bool first = true;
float diff_lat, diff_lon, diff_ele;
std::vector<Point> track;
while(std::getline(ifs, line))
{
// get starting position of field NAME
auto lat = line.find("lat=\"");
if(lat == std::string::npos)
continue;
// get ending position of field DATA
auto lat_to = line.find("\"", lat);
if(lat_to == std::string::npos)
continue;
// get starting position of field NAME
auto lon = line.find("lon=\"", lat_to);
if(lon == std::string::npos)
continue;
// get ending position of field DATA
auto lon_to = line.find("\"", lon);
if(lon_to == std::string::npos)
continue;
auto ele = line.find("<ele>", lon_to);
if(ele == std::string::npos)
continue;
auto ele_to = line.find("</ele>", ele);
if(ele_to == std::string::npos)
continue;
Point p;
try {
p.lat = std::atof(line.substr(lat + 5, lat_to).c_str()) * 200;
p.lon = std::atof(line.substr(lon + 5, lon_to).c_str()) * 200;
p.ele = std::atof(line.substr(ele + 5, ele_to).c_str()) * 0.1;
} catch (const std::exception &e) {
std::cerr << "Error in file " << file_and_path
<< ", line \"" << line << "\"."
<< std::endl;
continue;
}
track.push_back(p);
}
out_tracks.push_back(track);
ifs.close();
}
// TODO(dev): // TODO(dev):
// As per https://www.opengl.org/resources/libraries/glut/spec3/node11.html // As per https://www.opengl.org/resources/libraries/glut/spec3/node11.html
// "Therefore, GLUT programs should not assume the window was created at the specified size or position. // "Therefore, GLUT programs should not assume the window was created at the specified size or position.
@ -135,80 +196,14 @@ int main(int argc, char *argv[])
files.push_back(entry.path().string()); files.push_back(entry.path().string());
} }
float file_diff_lat = -8;
float file_diff_lon = -8;
for(auto file : files) for(auto file : files)
{ {
std::ifstream ifs(file); // NOTE(dev): OLD:
if(!ifs.is_open()) if(!ParseFile(tracks, file))
{ return -3; // couldn't parse file
std::cerr << "Couldn't open " << file << "." << std::endl;
return -2;
}
std::string line = ""; // NOTE(dev): NEW:
bool first = true; // TODO(dev): Xml Parser
float diff_lat, diff_lon, diff_ele;
std::vector<Point> track;
while(std::getline(ifs, line))
{
// get starting position of field NAME
auto lat = line.find("lat=\"");
if(lat == std::string::npos)
continue;
// get ending position of field DATA
auto lat_to = line.find("\"", lat);
if(lat_to == std::string::npos)
continue;
// get starting position of field NAME
auto lon = line.find("lon=\"", lat_to);
if(lon == std::string::npos)
continue;
// get ending position of field DATA
auto lon_to = line.find("\"", lon);
if(lon_to == std::string::npos)
continue;
auto ele = line.find("<ele>", lon_to);
if(ele == std::string::npos)
continue;
auto ele_to = line.find("</ele>", ele);
if(ele_to == std::string::npos)
continue;
Point p;
try {
p.lat = std::atof(line.substr(lat + 5, lat_to).c_str()) * 200;
p.lon = std::atof(line.substr(lon + 5, lon_to).c_str()) * 200;
p.ele = std::atof(line.substr(ele + 5, ele_to).c_str()) * 0.1;
} catch (const std::exception &e) {
std::cerr << "Error in file " << file << ", line \"" << line << "\"." << std::endl;
continue;
}
if(first)
{
first = false;
diff_lat = p.lat;
diff_lon = p.lon;
diff_ele = p.ele;
}
p.lat -= diff_lat + file_diff_lat;
p.lon -= diff_lon + file_diff_lon;
p.ele -= diff_ele;
track.push_back(p);
}
tracks.push_back(track);
file_diff_lat += 4;
if(file_diff_lat > 5)
{
file_diff_lat = -8;
file_diff_lon += 4;
}
ifs.close();
} }
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH | GLUT_ALPHA | GLUT_MULTISAMPLE); glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH | GLUT_ALPHA | GLUT_MULTISAMPLE);