Package gov.nih.mipav.view

Class WindowLevel

java.lang.Object
gov.nih.mipav.view.WindowLevel
public class WindowLevel extends Object
The WindowLevel class provides mouse-driven window-level controls for the ModelLUT or ModelRGB lookup tables. The WindowLevel class can be used to attach mouse-control or any user-interface control to both the ModelLUT and ModelRGB classes.
See Also:
  • invalid reference 
    ViewJComponentEditImage.java
  • invalid reference 
    PlaneRender.java

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    private boolean
    doRelative
    If true, window/level adjusted relative to the current transfer function values If false, window/level adjusted to the absolute image position values
    private float[]
    m_afXWin
    Member variables used to adjust the window and level (contrast and brightness) by dragging with the right-mouse button:.
    private float[]
    m_afYWin
    Member variables used to adjust the window and level (contrast and brightness) by dragging with the right-mouse button:.
    private float
    m_fAlpha
    Default alpha blending value:
    private float
    m_fMax
    image max value
    private float
    m_fMin
    image min value
    private float
    m_fOldX
    previous mouse x-position
    private float
    m_fOldY
    previous mouse y-position
    private float
    old_fLevel
     
    private float
    old_fWindow
     

  • Constructor Summary

    Constructors
    Constructor
    Description
    WindowLevel()
    Default constructor.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    disposeLocal()
    Clean memory.
    float
    getLevelValue()
     
    float
    getWindowValue()
     
    private void
    initWinLevelGray(ModelLUT kLUT, ModelImage kImage)
    initWinLevelGray, initializes the ModelLUT for gray-scale images before window-level operations.
    private void
    initWinLevelRGB(ModelRGB kRGBT, ModelImage kImage)
    initWinLevelRGB, initializes the ModelRGB for window-level changes.
    void
    setAlpha(float fAlpha)
    Sets alpha for the notifyWindowDisplayListeners call
    boolean
    updateWinLevel(float fX, float fY, boolean bFirstUpdate, ModelStorageBase kLookupTable, ModelImage kImage)
    updateWinLevel updates the window-level for the input lookup table based on two normalized parameters (fX, fY).
    private void
    updateWinLevelGray(ModelLUT kLUT, ModelImage kImage, float[] afXWin, float[] afYWin)
    updateWinLevelGray, updates the ModelLUT with the new transfer function.
    private void
    updateWinLevelRGB(ModelRGB kRGBT, ModelImage kImage, float[] afXWin, float[] afYWin)
    updateWinLevelRGB, updates the ModelRGB with the new transfer functions.
    private void
    winLevelGray(ModelLUT kLUT, ModelImage kImage)
    winLevelGray finds old_fWindow and old_fLevel
    private void
    winLevelRGB(ModelRGB kRGBT, ModelImage kImage)
    winLevelRGB finds old_fWindow and old_fLevel.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • m_afXWin

      private float[] m_afXWin
      Member variables used to adjust the window and level (contrast and brightness) by dragging with the right-mouse button:.

    • m_afYWin

      private float[] m_afYWin
      Member variables used to adjust the window and level (contrast and brightness) by dragging with the right-mouse button:.

    • m_fMax

      private float m_fMax
      image max value

    • m_fMin

      private float m_fMin
      image min value

    • m_fOldX

      private float m_fOldX
      previous mouse x-position

    • m_fOldY

      private float m_fOldY
      previous mouse y-position

    • m_fAlpha

      private float m_fAlpha
      Default alpha blending value:

    • doRelative

      private boolean doRelative
      If true, window/level adjusted relative to the current transfer function values If false, window/level adjusted to the absolute image position values

    • old_fWindow

      private float old_fWindow

    • old_fLevel

      private float old_fLevel

  • Constructor Details

    • WindowLevel

      public WindowLevel()
      Default constructor.

  • Method Details

    • disposeLocal

      public void disposeLocal()
      Clean memory.

    • updateWinLevel

      public boolean updateWinLevel(float fX, float fY, boolean bFirstUpdate, ModelStorageBase kLookupTable, ModelImage kImage)
      updateWinLevel updates the window-level for the input lookup table based on two normalized parameters (fX, fY). These parameters may be derived from a normalized x,y mouse position, from slider values, or from any variable. In ViewJComponentEditImage and PlaneRender classesL If the right mouse button is pressed and dragged. updateWinLevel updates the HistoLUT window and level (contrast and brightness) for the ViewJComponentEditImage and PlaneRender classes. The input parameters fX and fY must be in normalized screen space (0-1).
      Parameters:
      fX - the normalized window parameter (0-1)
      fY - the normalized level parameter (0-1)
      bFirstUpdate - when true initialize the WindowLevel function
      kLookupTable - either the ModelLUT or the ModelRGB being modified
      kImage - the ModelImage the lookup table describes.
      Returns:
      true when the lookup table changes, false when no change

    • setAlpha

      public void setAlpha(float fAlpha)
      Sets alpha for the notifyWindowDisplayListeners call
      Parameters:
      fAlpha - the alpha value for blending between images. Needed to pass to the notifyWindowDisplayListeners function.

    • initWinLevelRGB

      private void initWinLevelRGB(ModelRGB kRGBT, ModelImage kImage)
      initWinLevelRGB, initializes the ModelRGB for window-level changes. The transfer function is set to have four control points, and is reset to the default linear.
      Parameters:
      kRGBT - the ModelRGB to be initialized
      kImage - the ModelImage that the min/max values are derived from for initializing the ModelRGB.

    • winLevelRGB

      private void winLevelRGB(ModelRGB kRGBT, ModelImage kImage)
      winLevelRGB finds old_fWindow and old_fLevel.
      Parameters:
      kRGBT - the ModelRGB
      kImage - the ModelImage

    • initWinLevelGray

      private void initWinLevelGray(ModelLUT kLUT, ModelImage kImage)
      initWinLevelGray, initializes the ModelLUT for gray-scale images before window-level operations. The transfer function is set to have four control points, and is reset to the default linear.
      Parameters:
      kLUT - the ModelLUT to be initialized.
      kImage - the ModelImage attached to kLUT

    • winLevelGray

      private void winLevelGray(ModelLUT kLUT, ModelImage kImage)
      winLevelGray finds old_fWindow and old_fLevel
      Parameters:
      kLUT - the ModelLUT
      kImage - the ModelImage attached to kLUT

    • updateWinLevelRGB

      private void updateWinLevelRGB(ModelRGB kRGBT, ModelImage kImage, float[] afXWin, float[] afYWin)
      updateWinLevelRGB, updates the ModelRGB with the new transfer functions. Updates depend on the activation of the different rgb functions, so if the getROn returns false the red function is not updated.
      Parameters:
      kRGBT - the ModelRGB being updated
      kImage - the ModelImage that the ModelRGB describes
      afXWin - the x-transfer function
      afYWin - the y-transfer function

    • updateWinLevelGray

      private void updateWinLevelGray(ModelLUT kLUT, ModelImage kImage, float[] afXWin, float[] afYWin)
      updateWinLevelGray, updates the ModelLUT with the new transfer function.
      Parameters:
      kLUT - the ModelLUT being updated
      kImage - the ModelImage that the ModelLUT describes
      afXWin - the x-transfer function
      afYWin - the y-transfer function

    • getWindowValue

      public float getWindowValue()

    • getLevelValue

      public float getLevelValue()