dvereb/GPX-Visualizer
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Better 3d visualization.

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This commit is contained in:
David Vereb
2020-09-09 21:40:39 -04:00
parent 941d8f96d8
commit 79cdfeb4a6
1 changed files with 55 additions and 19 deletions
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74
main.cpp
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@@ -15,6 +15,7 @@ GLfloat light_position[] = {1.0, 1.0, 1.0, 0.0}; /* Infinite light location. */
struct Point {
float lat;
float lon;
float ele;
};
static std::vector<std::vector<Point> > tracks;
@@ -26,16 +27,16 @@ static std::vector<std::vector<Point> > tracks;
void draw(const std::vector<Point> &points)
{
static float rot=0.0;
rot += 0.1f;
glLineWidth(1.0f);
glLineWidth(0.5f);
glColor3d(1.0,1.0,1.0);
// Draw Sun:
// Draw bike path
glBegin(GL_LINE_STRIP);
for(auto p : points)
glVertex3f(p.lat, p.lon, 0.0);
{
auto val = (50 + (p.ele * 10)) / 180.0;
glColor3d(val, val, val);
glVertex3f(p.lat, p.ele, p.lon);
}
glEnd();
// usleep(100000);
@@ -45,9 +46,22 @@ void draw(const std::vector<Point> &points)
void display()
{
// RESET:
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
static double asdf = -10.0;
asdf += 0.03;
if(asdf > 30.0)
asdf = -30.0;
gluLookAt(-asdf, 12.0, -30, /* eye is at */
0.0, 0.0, 0.0, /* center is at */
0.0, 1.0, 0.0); /* up is in positive Y direction */
// DRAW TRACKS:
for(auto track : tracks)
draw(track);
glutSwapBuffers();
}
@@ -56,6 +70,8 @@ void init()
// dvereb:
srand(time(NULL));
glColor3d(1.0, 1.0, 1.0);
/* Enable a single OpenGL light. */
// glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
// glLightfv(GL_LIGHT0, GL_POSITION, light_position);
@@ -71,9 +87,9 @@ void init()
/* aspect ratio */ 1.0,
/* Z near */ 1.0, /* Z far */ 1000.0);
glMatrixMode(GL_MODELVIEW);
gluLookAt(0.0, 0.0, 20.0, /* eye is at */
gluLookAt(-10.0, 25.0, -10.0, /* eye is at */
0.0, 0.0, 0.0, /* center is at */
0.0, 1.0, 0.); /* up is in positive Y direction */
0.0, 1.0, 0.0); /* up is in positive Y direction */
}
int main(int argc, char *argv[])
@@ -92,6 +108,8 @@ int main(int argc, char *argv[])
files.push_back(entry.path().filename());
}
float file_diff_lat = -8;
float file_diff_lon = -8;
for(auto file : files)
{
std::ifstream ifs(file);
@@ -103,30 +121,40 @@ int main(int argc, char *argv[])
std::string line = "";
bool first = true;
float diff_lat, diff_lon;
float diff_lat, diff_lon, diff_ele;
std::vector<Point> track;
while(std::getline(ifs, line))
{
// get starting position of field NAMES
// get starting position of field NAME
auto lat = line.find("lat=\"");
if(lat == std::string::npos)
continue;
auto lon = line.find("lon=\"");
if(lon == 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()) * 500;
p.lon = std::atof(line.substr(lon + 5, lon_to).c_str()) * 500;
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;
@@ -137,13 +165,21 @@ int main(int argc, char *argv[])
first = false;
diff_lat = p.lat;
diff_lon = p.lon;
diff_ele = p.ele;
}
p.lat -= diff_lat;
p.lon -= diff_lon;
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();
}