public static int GTIFKeyGet(GTIF gtif, geokey_t thekey, out coordtrans_t val, int index, int count)
{
// ignore count
val = 0;
ushort[] vals;
if (GTIFKeyGet(gtif, thekey, out vals, index, 1) == 0)
{
return(0);
}
val = (coordtrans_t)vals[0];
return(1);
}
//**********************************************************************
// SetGTParmIds()
//
// This is hardcoded logic to set the GeoTIFF parmaeter
// identifiers for all the EPSG supported projections. As the
// trf_method.csv table grows with new projections, this code
// will need to be updated.
//**********************************************************************
static bool SetGTParmIds(coordtrans_t CTProjection, geokey_t[] projParmId, int[] EPSGCodes)
{
if(EPSGCodes==null) EPSGCodes=new int[7];
if(projParmId==null) projParmId=new geokey_t[7];
// psDefn.nParms=7;
switch(CTProjection)
{
case coordtrans_t.CT_CassiniSoldner:
case coordtrans_t.CT_NewZealandMapGrid:
projParmId[0]=geokey_t.ProjNatOriginLatGeoKey;
projParmId[1]=geokey_t.ProjNatOriginLongGeoKey;
projParmId[5]=geokey_t.ProjFalseEastingGeoKey;
projParmId[6]=geokey_t.ProjFalseNorthingGeoKey;
EPSGCodes[0]=EPSGNatOriginLat;
EPSGCodes[1]=EPSGNatOriginLong;
EPSGCodes[5]=EPSGFalseEasting;
EPSGCodes[6]=EPSGFalseNorthing;
return true;
case coordtrans_t.CT_ObliqueMercator:
projParmId[0]=geokey_t.ProjCenterLatGeoKey;
projParmId[1]=geokey_t.ProjCenterLongGeoKey;
projParmId[2]=geokey_t.ProjAzimuthAngleGeoKey;
projParmId[3]=geokey_t.ProjRectifiedGridAngleGeoKey;
projParmId[4]=geokey_t.ProjScaleAtCenterGeoKey;
projParmId[5]=geokey_t.ProjFalseEastingGeoKey;
projParmId[6]=geokey_t.ProjFalseNorthingGeoKey;
EPSGCodes[0]=EPSGProjCenterLat;
EPSGCodes[1]=EPSGProjCenterLong;
EPSGCodes[2]=EPSGAzimuth;
EPSGCodes[3]=EPSGAngleRectifiedToSkewedGrid;
EPSGCodes[4]=EPSGInitialLineScaleFactor;
EPSGCodes[5]=EPSGProjCenterEasting; // EPSG proj method 9812 uses EPSGFalseEasting, but 9815 uses EPSGProjCenterEasting
EPSGCodes[6]=EPSGProjCenterNorthing; // EPSG proj method 9812 uses EPSGFalseNorthing, but 9815 uses EPSGProjCenterNorthing
return true;
case coordtrans_t.CT_ObliqueMercator_Laborde:
projParmId[0]=geokey_t.ProjCenterLatGeoKey;
projParmId[1]=geokey_t.ProjCenterLongGeoKey;
projParmId[2]=geokey_t.ProjAzimuthAngleGeoKey;
projParmId[4]=geokey_t.ProjScaleAtCenterGeoKey;
projParmId[5]=geokey_t.ProjFalseEastingGeoKey;
projParmId[6]=geokey_t.ProjFalseNorthingGeoKey;
EPSGCodes[0]=EPSGProjCenterLat;
EPSGCodes[1]=EPSGProjCenterLong;
EPSGCodes[2]=EPSGAzimuth;
EPSGCodes[4]=EPSGInitialLineScaleFactor;
EPSGCodes[5]=EPSGProjCenterEasting;
EPSGCodes[6]=EPSGProjCenterNorthing;
return true;
case coordtrans_t.CT_LambertConfConic_1SP:
case coordtrans_t.CT_Mercator:
case coordtrans_t.CT_ObliqueStereographic:
case coordtrans_t.CT_PolarStereographic:
case coordtrans_t.CT_TransverseMercator:
case coordtrans_t.CT_TransvMercator_SouthOriented:
projParmId[0]=geokey_t.ProjNatOriginLatGeoKey;
projParmId[1]=geokey_t.ProjNatOriginLongGeoKey;
projParmId[4]=geokey_t.ProjScaleAtNatOriginGeoKey;
projParmId[5]=geokey_t.ProjFalseEastingGeoKey;
projParmId[6]=geokey_t.ProjFalseNorthingGeoKey;
EPSGCodes[0]=EPSGNatOriginLat;
EPSGCodes[1]=EPSGNatOriginLong;
EPSGCodes[4]=EPSGNatOriginScaleFactor;
EPSGCodes[5]=EPSGFalseEasting;
EPSGCodes[6]=EPSGFalseNorthing;
return true;
case coordtrans_t.CT_LambertConfConic_2SP:
projParmId[0]=geokey_t.ProjFalseOriginLatGeoKey;
projParmId[1]=geokey_t.ProjFalseOriginLongGeoKey;
projParmId[2]=geokey_t.ProjStdParallel1GeoKey;
projParmId[3]=geokey_t.ProjStdParallel2GeoKey;
projParmId[5]=geokey_t.ProjFalseEastingGeoKey;
projParmId[6]=geokey_t.ProjFalseNorthingGeoKey;
EPSGCodes[0]=EPSGFalseOriginLat;
EPSGCodes[1]=EPSGFalseOriginLong;
EPSGCodes[2]=EPSGStdParallel1Lat;
EPSGCodes[3]=EPSGStdParallel2Lat;
EPSGCodes[5]=EPSGFalseOriginEasting;
EPSGCodes[6]=EPSGFalseOriginNorthing;
return true;
case coordtrans_t.CT_AlbersEqualArea:
projParmId[0]=geokey_t.ProjStdParallel1GeoKey;
projParmId[1]=geokey_t.ProjStdParallel2GeoKey;
projParmId[2]=geokey_t.ProjNatOriginLatGeoKey;
projParmId[3]=geokey_t.ProjNatOriginLongGeoKey;
projParmId[5]=geokey_t.ProjFalseEastingGeoKey;
projParmId[6]=geokey_t.ProjFalseNorthingGeoKey;
EPSGCodes[0]=EPSGStdParallel1Lat;
EPSGCodes[1]=EPSGStdParallel2Lat;
EPSGCodes[2]=EPSGFalseOriginLat;
EPSGCodes[3]=EPSGFalseOriginLong;
EPSGCodes[5]=EPSGFalseOriginEasting;
EPSGCodes[6]=EPSGFalseOriginNorthing;
return true;
case coordtrans_t.CT_SwissObliqueCylindrical:
projParmId[0]=geokey_t.ProjCenterLatGeoKey;
projParmId[1]=geokey_t.ProjCenterLongGeoKey;
projParmId[5]=geokey_t.ProjFalseEastingGeoKey;
projParmId[6]=geokey_t.ProjFalseNorthingGeoKey;
EPSGCodes[0]=EPSGProjCenterLat;
EPSGCodes[1]=EPSGProjCenterLong;
EPSGCodes[5]=EPSGFalseOriginEasting;
EPSGCodes[6]=EPSGFalseOriginNorthing;
return true;
case coordtrans_t.CT_LambertAzimEqualArea:
projParmId[0]=geokey_t.ProjCenterLatGeoKey;
projParmId[1]=geokey_t.ProjCenterLongGeoKey;
projParmId[5]=geokey_t.ProjFalseEastingGeoKey;
projParmId[6]=geokey_t.ProjFalseNorthingGeoKey;
EPSGCodes[0]=EPSGNatOriginLat;
EPSGCodes[1]=EPSGNatOriginLong;
EPSGCodes[5]=EPSGFalseEasting;
EPSGCodes[6]=EPSGFalseNorthing;
return true;
case coordtrans_t.CT_CylindricalEqualArea:
projParmId[0]=geokey_t.ProjStdParallel1GeoKey;
projParmId[1]=geokey_t.ProjNatOriginLongGeoKey;
projParmId[5]=geokey_t.ProjFalseEastingGeoKey;
projParmId[6]=geokey_t.ProjFalseNorthingGeoKey;
EPSGCodes[0]=EPSGStdParallel1Lat;
EPSGCodes[1]=EPSGFalseOriginLong;
EPSGCodes[5]=EPSGFalseOriginEasting;
EPSGCodes[6]=EPSGFalseOriginNorthing;
return true;
default:
return false;
}
}
public static bool GTIFKeySet(GTIF gtif, geokey_t keyID, coordtrans_t val)
{
ushort[] val1 = new ushort[] { (ushort)val };
return(GTIFKeySet(gtif, keyID, val1));
}
public static int GTIFKeyGet(GTIF gtif, geokey_t thekey, out coordtrans_t val, int index)
{
return(GTIFKeyGet(gtif, thekey, out val, index, 0));
}
public static bool GTIFKeySet(GTIF gtif, geokey_t keyID, coordtrans_t val)
{
ushort[] val1=new ushort[] { (ushort)val };
return GTIFKeySet(gtif, keyID, val1);
}
public static int GTIFKeyGet(GTIF gtif, geokey_t thekey, out coordtrans_t val, int index)
{
return GTIFKeyGet(gtif, thekey, out val, index, 0);
}
public static int GTIFKeyGet(GTIF gtif, geokey_t thekey, out coordtrans_t val, int index, int count)
{
// ignore count
val=0;
ushort[] vals;
if(GTIFKeyGet(gtif, thekey, out vals, index, 1)==0) return 0;
val=(coordtrans_t)vals[0];
return 1;
}
