Package org.esa.snap.core.datamodel

Class TiePointGridPointing

java.lang.Object
org.esa.snap.core.datamodel.TiePointGridPointing
All Implemented Interfaces:
Pointing
public final class TiePointGridPointing extends Object implements Pointing
A Pointing which uses tie-point grids to compute the geometry for a given pixel position.
Version:
$Revision$ $Date$

  • Constructor Details

    • TiePointGridPointing

      public TiePointGridPointing(GeoCoding geoCoding, TiePointGrid szGrid, TiePointGrid saGrid, TiePointGrid vzGrid, TiePointGrid vaGrid, TiePointGrid elGrid)
      Constructs a new pointing based on tie-point grids.
      Parameters:
      geoCoding - the geo-coding, must not be null
      szGrid - the sun zenith tie-point grid, can be null
      saGrid - the sun azimuth tie-point grid, can be null
      vzGrid - the viewing zenith tie-point grid, can be null
      vaGrid - the viewing azimuth tie-point grid, can be null
      elGrid - the elevation tie-point grid, can be null

  • Method Details

    • getGeoCoding

      public final GeoCoding getGeoCoding()
      Description copied from interface: Pointing
      Gets the geo-coding.
      Specified by:
      getGeoCoding in interface Pointing
      Returns:
      the geo-coding, never null.

    • getSunDir

      public final AngularDirection getSunDir(PixelPos pixelPos, AngularDirection sd)
      Description copied from interface: Pointing
      Gets the vector to the sun at the given pixel position as angular direction.
      Specified by:
      getSunDir in interface Pointing
      Parameters:
      pixelPos - the pixel position
      sd - the return value to be re-used. If null, a new AngularDirection will be returned
      Returns:
      the direction to the sun or null, if this information is not available
      See Also:

    • getViewDir

      public final AngularDirection getViewDir(PixelPos pixelPos, AngularDirection vd)
      Description copied from interface: Pointing
      Gets the vector to the observer at the given pixel position as angular direction.
      Specified by:
      getViewDir in interface Pointing
      Parameters:
      pixelPos - the pixel position
      vd - the return value to be re-used. If null, a new AngularDirection will be returned
      Returns:
      the direction to the observer or null, if this information is not available
      See Also:

    • getElevation

      public double getElevation(PixelPos pixelPos)
      Description copied from interface: Pointing
      Gets the elevation above the given pixel position.

      This method is called by the Orthorectifier in the case that no ElevationModel is available.

      Note that a particular implementation is not able to retrieve a meaningful elevation, it should return zero.

      Specified by:
      getElevation in interface Pointing
      Parameters:
      pixelPos - the pixel position
      Returns:
      the elevation at the given pixel position
      See Also:

    • canGetElevation

      public final boolean canGetElevation()
      Description copied from interface: Pointing
      Returns whether or not the elevation is available.
      Specified by:
      canGetElevation in interface Pointing
      Returns:
      true, if and only if so

    • canGetSunDir

      public final boolean canGetSunDir()
      Description copied from interface: Pointing
      Returns whether or not the sun direction is available.
      Specified by:
      canGetSunDir in interface Pointing
      Returns:
      true, if and only if so

    • canGetViewDir

      public final boolean canGetViewDir()
      Description copied from interface: Pointing
      Returns whether or not the viewing direction is available.
      Specified by:
      canGetViewDir in interface Pointing
      Returns:
      true, if and only if so

    • equals

      public boolean equals(Object obj)
      Overrides:
      equals in class Object

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object