Perhaps I'm missing something here....
I've got a C++ project that (in keeping with the shp2img.c source),
loads a map, and creates an image, saves the image, and then closes
frees the stuff up.
I'm trying to return the extents of the map as loaded but no matter what
I do, I'm only getting 0's for maxx, maxy, minx, and miny. The
application does indees return the desired map, and it does function
correctly but all I want is access to the extent properties once set in
the mapObj.
Perhaps someone can tell me what I'm doing wrong:
//----------------------------------------------------------------------------------
void makeMap( string mapfile = "", double xmax = 180.0, double ymax =
90.0, double xmin = -180.0, double ymin = -90.0, int width = 400, int
height = 400 )
{
mapObj *map = NULL;
imageObj *image = NULL;
if (mapfile.empty()) {
cout << "The mapfile parameter is empty." << endl;
return;
}
if (!fileExists( mapfile )) {
cout << "The specifed file does not exist." << endl;
return;
}
cout << "Loading the map file (" << mapfile.c_str() << ")..." <<endl;
map = msLoadMap( _strdup( mapfile.c_str() ), NULL );
cout << "Name: " << map->name << endl;
msMapSetSize( map, width, height );
cout << "Width, Height: " << map->width << ", " << map->height << endl;
msMapSetExtent( map, xmin, ymin, xmax, ymax );
cout << "Extents: (" << map->extent.minx << ", " << map->extent.miny
<< ") (" << map->extent.maxx << ", " << map->extent.maxy << ")" << endl;
cout << "Writing the map image..." << endl;
image = msDrawMap( map );
msSaveImage( map, image,
"C:\\Projects\\Company\\Apogee_Mapping\\PDFMaps\\test.png" );
cout << "Cleaning up..." << endl;
msFreeImage( image );
msFreeMap( map );
msCleanup();
cout << "Done." << endl;
}
--
Ian
