Package com.luciad.projection

Class ALcdAzimuthal

java.lang.Object
com.luciad.projection.ALcdProjection
com.luciad.projection.ALcdAzimuthal
All Implemented Interfaces:
ILcdAzimuthal, ILcdProjection, ILcdPropertyChangeSource, Serializable, Cloneable
Direct Known Subclasses:
TLcdAzimuthalEquidistant, TLcdDutchStereographic, TLcdEllipsoidalLambertAzimuthalEqualArea, TLcdGnomonic, TLcdLambertAzimuthalEqualArea, TLcdOrthographic, TLcdStereographic
public abstract class ALcdAzimuthal extends ALcdProjection implements ILcdAzimuthal, Cloneable
ALcdAzimuthal projections are ILcdProjection objects that have a central point of zero distortion. This central point is the origin of the ALcdAzimuthal. The azimuth (direction) from the origin point to any other point on the map is shown correctly.

An ALcdAzimuthal has an origin which is expressed in lat-lon coordinates.

Tangent plane projections are examples of ALcdAzimuthal.

See Also:

  • Constructor Details

    • ALcdAzimuthal

      public ALcdAzimuthal()

  • Method Details

    • setOriginLat

      public void setOriginLat(double aLatitude)
      Description copied from interface: ILcdAzimuthal
      Sets the latitude of the origin to aLatitude. Changing the origin of an azimuthal projection changes also its aspect. The normal aspect of an azimuthal projection corresponds to the origin at one of the poles. The transverse aspect corresponds to the origin on the equator. The oblique aspect corresponds to any other origin.
      Specified by:
      setOriginLat in interface ILcdAzimuthal
      Parameters:
      aLatitude - The new originLat value.
      See Also:

    • setOriginLon

      public void setOriginLon(double aLongitude)
      Description copied from interface: ILcdAzimuthal
      Sets the longitude of the origin to aLongitude.
      Specified by:
      setOriginLon in interface ILcdAzimuthal
      Parameters:
      aLongitude - The new originLon value.
      See Also:

    • getOrigin

      public ILcdPoint getOrigin()
      Description copied from interface: ILcdProjection
      Origin of the projection is the ILcd2DEditablePoint that corresponds with origin (0, 0) of the cartesian coordinate system of the projection.
      Specified by:
      getOrigin in interface ILcdProjection
      Returns:
      the origin of the projection.

    • getOriginLat

      public double getOriginLat()
      Description copied from interface: ILcdAzimuthal
      Gets the latitude of the origin.
      Specified by:
      getOriginLat in interface ILcdAzimuthal
      Returns:
      the latitude of the origin.
      See Also:

    • getOriginLon

      public double getOriginLon()
      Description copied from interface: ILcdAzimuthal
      Gets the longitude of the origin.
      Specified by:
      getOriginLon in interface ILcdAzimuthal
      Returns:
      the longitude of the origin.
      See Also:

    • isContinuous

      public boolean isContinuous()
      Description copied from interface: ILcdProjection
      An ILcdProjection is continuous if there are no interruptions in the world coordinates. Most projections are continuous.
      Specified by:
      isContinuous in interface ILcdProjection
      Returns:
      true if the projection is continuous, false otherwise.

    • loadProperties

      public void loadProperties(String aPrefix, Properties aProperty) throws IllegalArgumentException
      Loads the two properties of azimuthal projections. The longitude and latitude of the point of origin of the projection. This method will, given aPrefix, analyze the aProperties object to set the properties of this ALcdAzimuthal. The values of following keys are retrieved:
      • <aPrefix>.originLat
      • <aPrefix>.originLon
      Specified by:
      loadProperties in interface ILcdProjection
      Parameters:
      aPrefix - prefix of the property names.
      aProperty - Properties object containing the serialized properties.
      Throws:
      IllegalArgumentException - if the projection cannot be created.

    • writePropertiesSFCT

      public void writePropertiesSFCT(String aPrefix, Properties aPropertySFCT)
      Writes the two properties of azimuthal projections. The longitude and latitude of the point of origin of the projection. This method will, given aPrefix, store the properties of this ALcdAzimuthal into the aPropertiesSFCT object. The values of following keys are stored:
      • <aPrefix>.originLat
      • <aPrefix>.originLon
      Specified by:
      writePropertiesSFCT in interface ILcdProjection
      Parameters:
      aPrefix - prefix for the property names.
      aPropertySFCT - Properties object to store the serialized properties by side effect.

    • calculateCachedValues

      protected void calculateCachedValues()
      Constants based on the point of origin of the projection don't have to be recalculated every time a method is called. They only have to be calculated when the projection properties change. Within the methods the pre-calculated values then can be used in order to gain efficiency.

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object

    • equals

      public boolean equals(Object aObject)
      Description copied from interface: ILcdProjection
      Checks if this ILcdProjection equals some other Object.
      Specified by:
      equals in interface ILcdProjection
      Overrides:
      equals in class Object
      Parameters:
      aObject - Object to compare with.
      Returns:
      true if the Object is an instance of the same ILcdProjection class and having the same projection properties, false otherwise.

    • clone

      public Object clone()
      Description copied from interface: ILcdProjection
      Makes a deep clone of this ILcdProjection.
      Specified by:
      clone in interface ILcdProjection
      Overrides:
      clone in class ALcdProjection
      Returns:
      deep clone of this ILcdProjection.