public static CoordSys CreateCoordSys(
CoordSysType type,
Datum datum,
/*double originLongitude,
double originLatitude,
double standardParallelOne,
double standardParallelTwo,
double azimuth,
double scaleFactor,
double falseEasting,
double falseNorthing,
double range,*/
AffineTransform affineTransform)
{
CoordSys oCS = new CoordSys(type, datum, affineTransform);
return oCS;
}
public static CoordSys CreateCoordSys(string name)
{
if (name == "Mercator Datum(WGS84)")
{
AffineTransform at = new AffineTransform();
// uklad wsp:
// at zamiania wgs84 na px (256x256) i dalej na [m]
// at.MultiplyInPlace(256.0 / 360.0, -256.0 / 180.0);
// at.OffsetInPlace(-128, 128);
// at.MultiplyInPlace(Math.PI * r / 180, Math.PI * r / 180.0);
CoordSys oCS = new CoordSys(CoordSysType.Mercator, new Datum(DatumID.WGS84), at);
return oCS;
}
else
throw new Exception("Unsupported coordsys");
}
private double zoomElevateUpscale = 1024 * 8; //1024;
#endregion Fields
#region Constructors
public LayerTiles()
{
Datum datumWGS84Sphere = CoordSysFactory.CreateDatum(Ellipsoid.Sphere, 0, 0, 0, 0, 0, 0, 0, 0);
double r = datumWGS84Sphere.SemiMajorAxis;
// scale =256/360, offset=128, this is calculated for zoom=0 (one tile)
// converts merc deg (-180;180 , -90;90) into pixels (0;256 , 0;256)
AffineTransform affineTransform = new AffineTransform();
//zoomElevate = 1024; // zwieksz gestosc wspolrzednych o 10 pozomow zoom
// affineTransform.MultiplyInPlace(256.0 / 360.0 * zoomElevateUpscale, -256.0 / 360.0 * zoomElevateUpscale);
// affineTransform.OffsetInPlace(-128, 128);
affineTransform.MultiplyInPlace(256.0 / (2.0 * Math.PI * r) * zoomElevateUpscale, -256.0 / (2.0 * Math.PI * r) * zoomElevateUpscale);
affineTransform.OffsetInPlace(128 * zoomElevateUpscale, 128 * zoomElevateUpscale);
layerCoordSys = new CoordSys(CoordSysType.Mercator, datumWGS84Sphere, affineTransform);
// depending o tile zoom lever (1,2,3,...,17) there is different AT
// tiles loader
WindowsFormsImageProxy wimg = new WindowsFormsImageProxy();
GMaps.Instance.ImageProxy = wimg;
}
public Map(Control oParentControl)
{
m_oParentControl = oParentControl;
DisplayCoordSys = new CoordSys(CoordSysType.Mercator, new Datum(DatumID.WGS84), new AffineTransform());
}
bool Equal(CoordSys coordSys)
{
if (type != coordSys.type) return false;
return true;
}
public CoordSys Clone()
{
CoordSys oCS = new CoordSys(type, datum, affineTransform);
return oCS;
}