Package com.luciad.projection

Class TLcdEquidistantCylindrical

java.lang.Object
com.luciad.projection.ALcdProjection
com.luciad.projection.ALcdCylindrical
com.luciad.projection.TLcdEquidistantCylindrical
All Implemented Interfaces:
ILcdCylindrical, ILcdProjection, ILcdPropertyChangeSource, Serializable, Cloneable
public class TLcdEquidistantCylindrical extends ALcdCylindrical
Equidistant Cylindrical projection.

Introduction

The Equidistant Cylindrical projection is basically a linear transformation from lat-lon coordinates to XY world coordinates. If the equator is made the standard parallel this projection is also known as Plate Carree or Simple Cylindrical.

Properties

  • Neither equal-area nor conformal.
  • Meridians and parallels are straight lines. They are spaced equally and intersect each other at right angles.
  • Poles are projected as lines.
  • This projection is used only in spherical form.

Example

Sample code


 ILcdProjection projection =
     new TLcdEquidistantCylindrical(0.0, 0.0);
See Also:

  • Constructor Details

    • TLcdEquidistantCylindrical

      public TLcdEquidistantCylindrical()
      Constructs a simple rectangular projection with the central meridian at 0 and the standard parallel at 0.

    • TLcdEquidistantCylindrical

      public TLcdEquidistantCylindrical(double aCentralMeridian)
      Constructs a simple rectangular projection with the specified central meridian and the standard parallel at 0.
      Parameters:
      aCentralMeridian - the central meridian of the projection.

    • TLcdEquidistantCylindrical

      public TLcdEquidistantCylindrical(double aCentralMeridian, double aStandardParallel)
      Constructs a simple rectangular projection with the specified central meridian.
      Parameters:
      aCentralMeridian - the central meridian of the projection.
      aStandardParallel - the standard parallel of the projection.

  • Method Details

    • getStandardParallel

      public double getStandardParallel()
      Returns the standard parallel of the Equidistant Cylindrical projection.
      Returns:
      the standard parallel of the Equidistant Cylindrical projection.
      See Also:

    • setStandardParallel

      public void setStandardParallel(double aStandardParallel)
      Sets the standard parallel of the Equidistant Cylindrical projection.
      Parameters:
      aStandardParallel - the new standard parallel value.
      See Also:

    • lonlatheight2worldOnSphereSFCT

      public void lonlatheight2worldOnSphereSFCT(ILcdPoint aLLP, double aRadius, ILcd2DEditablePoint aXYPointSFCT) throws TLcdOutOfBoundsException
      Description copied from interface: ILcdProjection
      Transforms an ILcd2DEditablePoint on a sphere into the cartesian coordinate system of the projection.
      Parameters:
      aLLP - point to be projected.
      aRadius - radius of the sphere (meters).
      aXYPointSFCT - projected point as side effect.
      Throws:
      TLcdOutOfBoundsException - If the ILcdPoint aLLHP is not within the valid area of the projection (visible area), then this exception is thrown.

    • world2lonlatOnSphereSFCT

      public void world2lonlatOnSphereSFCT(ILcdPoint cp, double aRadius, ILcd2DEditablePoint aLLPSFCT) throws TLcdOutOfBoundsException
      Description copied from interface: ILcdProjection
      Transforms an ILcdPoint from the cartesian coordinate system of the projection into an ILcd2DEditablePoint onto a sphere.
      Parameters:
      cp - projected point for which the corresponding geodetic point is sought.
      aRadius - radius of the sphere (meters).
      aLLPSFCT - resulting geodetic coordinate as side effect.
      Throws:
      TLcdOutOfBoundsException - If the ILcdPoint aXYPoint is not within the valid area of the projection (visible area), then this exception is thrown.

    • isAllInBounds

      public boolean isAllInBounds()
      Description copied from interface: ILcdProjection
      If all geodetic coordinates (l ,j ) are projected (visible) by an ILcdProjection and all (x,y ) coordinates are bounded this is true. All ILcdProjection objects have bounded (x,y ) coordinates because the projection is cut off if necessary.
      Returns:
      true if all LonLatPoints are within the bounds of the projection, false otherwise.

    • 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
      Overrides:
      isContinuous in class ALcdCylindrical
      Returns:
      true if the projection is continuous, false otherwise.

    • inLonLatBounds

      public boolean inLonLatBounds(ILcdPoint aLLP)
      Description copied from interface: ILcdProjection
      Checks if an ILcdPoint is inside the valid area of geodetic coordinates of the projection. The valid area is determined by the LonLatPoints that are visible and for which the corresponding cartesian coordinate is within the boundaries.
      Parameters:
      aLLP - ILcdPoint to be checked upon.
      Returns:
      true if valid, false if invalid.

    • boundaryLons

      public double[][] boundaryLons(double aLatitude)
      Description copied from class: ALcdProjection
      Default implementation. To be redefined for specific projections.
      Specified by:
      boundaryLons in interface ILcdProjection
      Overrides:
      boundaryLons in class ALcdProjection
      Parameters:
      aLatitude - latitude in decimal degrees and -90.0 <= aLat<= 90.0.
      Returns:
      the array of pairs of longitudes[0] and longitudes[1], where the closed interval longitudes[0] -> longitudes[1] is in visible area and -180.0 <= lon[i] <= 180.0.

    • boundaryLats

      public double[][] boundaryLats(double aLongitude)
      Description copied from class: ALcdProjection
      Default implementation. To be redefined for specific projections.
      Specified by:
      boundaryLats in interface ILcdProjection
      Overrides:
      boundaryLats in class ALcdProjection
      Parameters:
      aLongitude - longitude in decimal degrees -180.0 <= lon <= 180.0 .
      Returns:
      the array of pairs of latitudes lats[0] and lats[1], where the closed interval lats[0] -> lats[1] is in visible area and -90.0 <= lats[i] <= 90.0 .

    • world2DEditableBoundsOnSphereSFCT

      public void world2DEditableBoundsOnSphereSFCT(double aRadius, ILcd2DEditableBounds aWorldBound)
      Description copied from interface: ILcdProjection
      Sets the ILcd2DEditableBounds object to the bounds of the projection in world coordinates.
      Parameters:
      aRadius - radius of the sphere.
      aWorldBound - the bounds of the projection in world coordinates as side effect.

    • inWorldBoundsOnSphere

      public boolean inWorldBoundsOnSphere(ILcdPoint aXYPoint, double aRadius)
      Description copied from interface: ILcdProjection
      Checks if a ILcdPoint is inside the valid cartesian area of the projection. The valid cartesian area is determined naturally by the projection bounds or by an artificial introduced boundary limit because some cartesian points are at infinity. The shape of the valid cartesian area is in many cases rectangular or circular although it might be more complex.
      Parameters:
      aXYPoint - point to be checked upon.
      aRadius - radius of the sphere.
      Returns:
      true if valid, false if invalid.

    • loadProperties

      public void loadProperties(String aPrefix, Properties aProperty) throws IllegalArgumentException
      Loads the two properties of this equidistant cylindrical projection, i.e., the central meridian and the standard parallel. This method will, given aPrefix, analyze the aProperties object to set the properties of this projection. The values of following keys are retrieved:
      • <aPrefix>.centralMeridian
      • <aPrefix>.standardParallel
      If these factors are not available they are set to the default value 0.0.
      Specified by:
      loadProperties in interface ILcdProjection
      Overrides:
      loadProperties in class ALcdCylindrical
      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 this equidistant cylindrical projection, i.e., the central meridian and the standard parallel. This method will, given aPrefix, store the properties of this projection into the aPropertiesSFCT object. The values of following keys are stored:
      • <aPrefix>.centralMeridian
      • <aPrefix>.standardParallel
      Specified by:
      writePropertiesSFCT in interface ILcdProjection
      Overrides:
      writePropertiesSFCT in class ALcdCylindrical
      Parameters:
      aPrefix - prefix for the property names.
      aPropertySFCT - Properties object to store the serialized properties by side effect.

    • toString

      public String toString()
      Returns the String representation of the TLcdEquidistantCylindrical projection.
      Specified by:
      toString in interface ILcdProjection
      Overrides:
      toString in class Object
      Returns:
      the String representation of the TLcdEquidistantCylindrical projection.

    • equals

      public boolean equals(Object o)
      Description copied from interface: ILcdProjection
      Checks if this ILcdProjection equals some other Object.
      Specified by:
      equals in interface ILcdProjection
      Overrides:
      equals in class ALcdCylindrical
      Parameters:
      o - 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.

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class ALcdCylindrical