/// <summary>
/// converts the map's/datasource's bbox to geographic bbox
/// </summary>
/// <param name="bb"></param>
/// <returns></returns>
protected EX_GeographicBoundingBox ConvertToGeographicBoundingBox(BoundingBox bb)
{
//output object
EX_GeographicBoundingBox bbox = new EX_GeographicBoundingBox();
//coordinate projection transformation
DotSpatial.Projections.ProjectionInfo pTo = DotSpatial.Projections.KnownCoordinateSystems.Geographic.World.WGS1984;
DotSpatial.Projections.ProjectionInfo pFrom = null;
pFrom = DotSpatial.Projections.ProjectionInfo.FromEpsgCode(this.SRID);
double minx, miny, maxx, maxy;
if (pFrom == null)
{
//from projection not known so just assume world coords
minx = -180;
miny = -90;
maxx = 180;
maxy = 90;
}
else
{
//projecton seems to be ok, so reproject
//coordinate pairs
double[] points = new double[4];
points[0] = bb.minx;
points[1] = bb.miny;
points[2] = bb.maxx;
points[3] = bb.maxy;
double[] z = { 1 };
DotSpatial.Projections.Reproject.ReprojectPoints(points, z, pFrom, pTo, 0, 2);
minx = points[0];
miny = points[1];
maxx = points[2];
maxy = points[3];
}
//transfer values
bbox.westBoundLongitude = minx;
bbox.southBoundLatitude = miny;
bbox.eastBoundLongitude = maxx;
bbox.northBoundLatitude = maxy;
//and return the object
return(bbox);
}
public void InitFromGeometry_ShouldCreateValidBoundingBox(string wkt, double east, double north, double south, double west)
{
var wgs84=CommonServiceLocator.GetCoordinateSystemProvider().Wgs84;
var builder=new Ogc.Gml.V311.GmlGeometryBuilder(wgs84);
builder.Parse(wkt, wgs84);
var input=builder.ConstructedGeometry;
var res=new EX_GeographicBoundingBox();
res.InitFromGeometry(input);
Assert.Equal(east, (double)res.eastBoundLongitude.Decimal.TypedValue);
Assert.Equal(north, (double)res.northBoundLatitude.Decimal.TypedValue);
Assert.Equal(south, (double)res.southBoundLatitude.Decimal.TypedValue);
Assert.Equal(west, (double)res.westBoundLongitude.Decimal.TypedValue);
}
public void InitFromGeometry_ShouldCreateValidBoundingBox(string wkt, double east, double north, double south, double west)
{
var wgs84 = CommonServiceLocator.GetCoordinateSystemProvider().Wgs84;
var builder = new Ogc.Gml.V311.GmlGeometryBuilder(wgs84);
builder.Parse(wkt, wgs84);
var input = builder.ConstructedGeometry;
var res = new EX_GeographicBoundingBox();
res.InitFromGeometry(input);
Assert.Equal(east, (double)res.eastBoundLongitude.Decimal.TypedValue);
Assert.Equal(north, (double)res.northBoundLatitude.Decimal.TypedValue);
Assert.Equal(south, (double)res.southBoundLatitude.Decimal.TypedValue);
Assert.Equal(west, (double)res.westBoundLongitude.Decimal.TypedValue);
}
