Package com.luciad.tea.hypsometry

Class TLcdHypsometricOrientationAngle

java.lang.Object
com.luciad.tea.hypsometry.TLcdHypsometricOrientationAngle
All Implemented Interfaces:
ILcdHypsometricValueProvider
public class TLcdHypsometricOrientationAngle extends Object implements ILcdHypsometricValueProvider

This ILcdHypsometricValueProvider computes the angle between a given reference direction in the xy plane and the direction of steepest descent. The angle is expressed in radians, counter-clockwise, over the full circle [0, 2*pi].

  • Constructor Details

    • TLcdHypsometricOrientationAngle

      public TLcdHypsometricOrientationAngle()
      Creates a new TLcdHypsometricOrientationAngle for the reference direction (0, 1).

    • TLcdHypsometricOrientationAngle

      public TLcdHypsometricOrientationAngle(double aReferenceDirectionX, double aReferenceDirectionY)
      Creates a new TLcdHypsometricOrientationAngle for the given reference direction. The direction does not have to be normalized. The normal provider is a default, which computes normals based on 2x2 samples.
      Parameters:
      aReferenceDirectionX - the x component of the reference direction.
      aReferenceDirectionY - the y component of the reference direction.

    • TLcdHypsometricOrientationAngle

      public TLcdHypsometricOrientationAngle(double aReferenceDirectionX, double aReferenceDirectionY, ILcdHypsometricNormalProvider aHypsometricNormalProvider)
      Creates a new TLcdHypsometricOrientationAngle for the given reference direction and normal provider. The direction does not have to be normalized.
      Parameters:
      aReferenceDirectionX - the x component of the reference direction.
      aReferenceDirectionY - the y component of the reference direction.
      aHypsometricNormalProvider - the normal provider.

  • Method Details

    • getReferenceDirectionX

      public double getReferenceDirectionX()
      Returns the x component of the reference direction.
      Returns:
      the x component of the reference direction.

    • getReferenceDirectionY

      public double getReferenceDirectionY()
      Returns the y component of the reference direction.
      Returns:
      the y component of the reference direction.

    • getHypsometricNormalProvider

      public ILcdHypsometricNormalProvider getHypsometricNormalProvider()
      Returns the normal provider.
      Returns:
      the normal provider.

    • getFootPrint

      public Rectangle getFootPrint()
      Description copied from interface: ILcdHypsometricValueProvider
      Returns the foot print of this provider. For instance, if the hypsometric value at each point is computed based on the surrounding 3x3 matrix values, the foot print is the rectangle (-1, -1, 3, 3).
      Specified by:
      getFootPrint in interface ILcdHypsometricValueProvider
      Returns:
      the foot print of this provider.

    • getMinimumValue

      public double getMinimumValue()
      Description copied from interface: ILcdHypsometricValueProvider
      Returns the minimum hypsometric value that this provider may return.
      Specified by:
      getMinimumValue in interface ILcdHypsometricValueProvider
      Returns:
      the minimum hypsometric value.

    • getMaximumValue

      public double getMaximumValue()
      Description copied from interface: ILcdHypsometricValueProvider
      Returns the maximum hypsometric value that this provider may return.
      Specified by:
      getMaximumValue in interface ILcdHypsometricValueProvider
      Returns:
      the maximum hypsometric value.

    • computeValue

      public double computeValue(ILcdMatrixView aMatrixView, int aX, int aY, double aElevationScale)
      Description copied from interface: ILcdHypsometricValueProvider
      Computes the hypsometric value at the given point.
      Specified by:
      computeValue in interface ILcdHypsometricValueProvider
      Parameters:
      aMatrixView - the matrix containing elevation values.
      aX - the x ordinate in the matrix.
      aY - the y ordinate in the matrix.
      aElevationScale - the scale of the elevation values in the tiles, expressed in matrix units per tile elevation unit.
      Returns:
      the computed hypsometric value, or NaN if it is unknown, for instance if not all required elevations are known.