Package com.luciad.earth.view.gxy.util

Class TLcdEarthSparseIcon

java.lang.Object
com.luciad.earth.view.gxy.util.ALcdEarthParameterizedIcon
com.luciad.earth.view.gxy.util.ALcdEarth2DVectorIcon
com.luciad.earth.view.gxy.util.TLcdEarthSparseIcon
All Implemented Interfaces:
ILcdParameterizedIcon, ILcdOriented
public class TLcdEarthSparseIcon extends ALcdEarth2DVectorIcon implements ILcdOriented
An icon that paints another icon with a density that is based on the strength of a vector. When the strength is high in a region, many icons are drawn. When the strength is low, only a few icons are drawn.

The density policy is implemented by sparsely painting the icon (e.g. the icon is sometimes not painted, depending on the strength).

Since:
10.1

  • Constructor Details

    • TLcdEarthSparseIcon

      public TLcdEarthSparseIcon(ILcdParameterizedIcon aDelegate, ALcdEarth2DVectorIcon.Parameterization aType, int aDeltaX, int aDeltaY, double aMinimumStrength, double aMaximumStrength)
      Constructs a new sparse icon.
      Parameters:
      aDelegate - the icon to paint sparsely
      aType - the parameterization type
      aDeltaX - the horizontal grid spacing at which this icon is painted
      aDeltaY - the vertical grid spacing at which this icon is painted
      aMinimumStrength - the minimum strength
      aMaximumStrength - the expected maximum strength

  • Method Details

    • getDeltaX

      public int getDeltaX()
      Returns the horizontal grid spacing at which this icon is painted.
      Returns:
      the horizontal grid spacing at which this icon is painted
      See Also:

    • setDeltaX

      public void setDeltaX(int aDeltaX)
      Sets the horizontal grid spacing at which this icon is painted.
      Parameters:
      aDeltaX - the horizontal grid spacing at which this icon is painted
      See Also:

    • getDeltaY

      public int getDeltaY()
      Returns the vertical grid spacing at which this icon is painted.
      Returns:
      the vertical grid spacing at which this icon is painted
      See Also:

    • setDeltaY

      public void setDeltaY(int aDeltaY)
      Sets the vertical grid spacing at which this icon is painted.
      Parameters:
      aDeltaY - the vertical grid spacing at which this icon is painted
      See Also:

    • getMinimumStrength

      public double getMinimumStrength()
      Returns the minimum strength.

      Icons with a strength equal to or lower than the minimum strength are never painted.

      Returns:
      the minimum strength

    • setMinimumStrength

      public void setMinimumStrength(double aMinimumStrength)
      Sets the minimum strength.
      Parameters:
      aMinimumStrength - the minimum strength
      See Also:

    • getMaximumStrength

      public double getMaximumStrength()
      Returns the expected maximum strength.

      Icons with a strength larger than the maximum strength are always painted.

      Returns:
      the expected maximum strength

    • setMaximumStrength

      public void setMaximumStrength(double aMaximumStrength)
      Sets the expected maximum strength.
      Parameters:
      aMaximumStrength - the expected maximum strength
      See Also:

    • getWidth

      public int getWidth(double[] aParameters)
      Description copied from interface: ILcdParameterizedIcon
      Returns the width of the icon for the given parameter values.
      Specified by:
      getWidth in interface ILcdParameterizedIcon
      Parameters:
      aParameters - the parameter values as passed in ILcdParameterizedIcon.paintIcon(java.awt.Graphics, int, int, double[])
      Returns:
      the width

    • getHeight

      public int getHeight(double[] aParameters)
      Description copied from interface: ILcdParameterizedIcon
      Returns the height of the icon for the given parameter values.
      Specified by:
      getHeight in interface ILcdParameterizedIcon
      Parameters:
      aParameters - the parameter values as passed in ILcdParameterizedIcon.paintIcon(java.awt.Graphics, int, int, double[])
      Returns:
      the height

    • paintIcon

      public void paintIcon(Graphics aGraphics, int aX, int aY, double[] aParameters)
      Description copied from interface: ILcdParameterizedIcon
      Paint the icon at the specified location for the parameters
      Specified by:
      paintIcon in interface ILcdParameterizedIcon
      Parameters:
      aGraphics - the Graphics on which the icon is painted
      aX - the x coordinate at which the icon is painted. aX is the x-coordinate of the top left corner point of the icon.
      aY - the y coordinate at which the icon is painted. aY is the y-coordinate of the top left corner point of the icon.
      aParameters - the parameter values

    • anchorPointSFCT

      public void anchorPointSFCT(double[] aParameters, Point aPointSFCT)
      Description copied from class: ALcdEarthParameterizedIcon

      Returns the anchor point of this icon. The anchor point of an icon is the point on the icon that is attached to the underlying object. For example: a circle icon is attached to an underlying point object by its center. An arrow icon can for example be attached to its object at the start of the arrow. The x-coordinate of the anchor point typically lies between 0 and getWidth(). The y-coordinate typically lies between 0 and getHeight().

      Note that implementations don't need to take the anchor point into account when implementing the paintIcon method. The coordinates passed to that method always represent the top left corner of the icon. Callers of the paint method should make sure that the anchor point is taken into account.

      A good default implementation can be to use the middle of the icon:

      
 aPointSFCT.setLocation(getWidth(aParameters) / 2, getHeight(aParameters) / 2);

      This method implementation provides a default anchor point: (width/2, height/2). Override this method to provide an other anchor point.

      Specified by:
      anchorPointSFCT in interface ILcdParameterizedIcon
      Overrides:
      anchorPointSFCT in class ALcdEarthParameterizedIcon
      Parameters:
      aParameters - the parameter values
      aPointSFCT - the point that has to be moved to the location of the anchor point of this icon.

    • getOrientation

      public double getOrientation()
      Description copied from interface: ILcdOriented
      Returns the orientation of this object in degrees. The orientation should be interpreted as a clockwise angle in degrees starting from 12 o'clock.

      If there is no rotation known for this object, return Double.NaN.

      Specified by:
      getOrientation in interface ILcdOriented
      Returns:
      the orientation of this object in degrees, or NaN if undefined.