private void recalculateGrid()
{
num_rows = 0;
num_cols = 0;
dx = 0.0;
last_dx = 0.0;
dy = 0.0;
last_dy = 0.0;
GeoExtent aoi = getAreaOfInterest();
if (aoi.isValid())
{
GeoPoint sw = aoi.getSouthwest();
GeoPoint ne = aoi.getNortheast();
SpatialReference srs = aoi.getSRS();
if (getCellHeight() > 0.0)
{
num_rows = (uint)Math.Ceiling(aoi.getHeight() / getCellHeight());
dy = getCellHeight();
last_dy = aoi.getHeight() % getCellHeight();
if (last_dy == 0.0)
{
last_dy = dy;
}
}
else
{
num_rows = 1;
dy = last_dy = aoi.getHeight();
}
if (getCellWidth() > 0.0)
{
num_cols = (uint)Math.Ceiling(aoi.getWidth() / getCellWidth());
dx = getCellWidth();
last_dx = aoi.getWidth() % getCellWidth();
if (last_dx == 0.0)
{
last_dx = dx;
}
}
else
{
num_cols = 1;
dx = last_dx = aoi.getWidth();
}
grid_valid = true;
}
}
// MapLayerCompiler interface
public virtual Profile createProfile()
{
// determine the output SRS:
SpatialReference out_srs = map_layer.getOutputSRS(getSession(), terrain_srs);
if (out_srs == null)
{
//osgGIS.warn() << "Unable to figure out the output SRS; aborting." << std.endl;
return(null);
}
// figure out the bounds of the compilation area and create a Q map. We want a sqaure AOI..maybe
GeoExtent aoi = map_layer.getAreaOfInterest();
if (aoi == null)
{
//osgGIS.warn() << "Invalid area of interest in the map layer - no data?" << std.endl;
return(null);
}
QuadMap qmap;
if (out_srs.isGeocentric())
{
// for a geocentric map, use a modified GEO quadkey:
// (yes, that MIN_LAT of -180 is correct...we want a square)
qmap = new QuadMap(new GeoExtent(-180.0, -180.0, 180.0, 90.0, Registry.SRSFactory().createWGS84()));
}
else
{
double max_span = Math.Max(aoi.getWidth(), aoi.getHeight());
GeoPoint sw = aoi.getSouthwest();
GeoPoint ne = new GeoPoint(sw.x() + max_span, sw.y() + max_span, aoi.getSRS());
qmap = new QuadMap(new GeoExtent(sw, ne));
}
#if TODO
qmap.setStringStyle(QuadMap.STYLE_LOD_QUADKEY);
#endif
// osgGIS.notice()
// << "QMAP: " << std.endl
// << " Top LOD = " << getTopLod( qmap, map_layer.get() ) << std.endl
// << " Depth = " << map_layer.getMaxDepth() << std.endl
// << " Extent = " << qmap.getBounds().toString() << ", w=" << qmap.getBounds().getWidth() << ", h=" << qmap.getBounds().getHeight() << std.endl
// << std.endl;
return(new QuadTreeProfile(qmap));
}