java.lang.Object
- gov.nih.mipav.view.renderer.WildMagic.Render.MultiDimensionalTransfer.ClassificationWidget
- - gov.nih.mipav.view.renderer.WildMagic.Render.MultiDimensionalTransfer.TriangleClassificationWidget

All Implemented Interfaces:

java.io.Serializable
```
public class TriangleClassificationWidget
extends ClassificationWidget
```
This class implements a 2D Triangle-shaped ClassficiationWidget. The code implements the rendering of the widget in the 2D Multi-histogram panel, as well as the user mouse-interaction with the widget. The parameters that define the widget are then passed to the Volume Renderer GLSL shader program and determine how the Volume is displayed. *

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field	Description
`private float`	`m_fCenterX`	Current parameterized coordinates for the center control point in X (used to maintain relative position when resizing the widget).
`private float`	`m_fCenterY`	Current parameterized coordinates for the center control point in Y (used to maintain relative position when resizing the widget).
`protected WildMagic.LibGraphics.SceneGraph.TriMesh`	`m_kLeftSphere`
`private static long`	`serialVersionUID`

Fields inherited from class gov.nih.mipav.view.renderer.WildMagic.Render.MultiDimensionalTransfer.ClassificationWidget
BOTTOM_EDGE, LEFT_EDGE, m_iHeight, m_iWidth, m_kLowerSphere, m_kMiddleSphere, m_kMouseOffset, m_kOutline, m_kPicked, m_kTMax, m_kTMin, m_kUpperSphere, m_kWidget, m_kWidgetEfect, m_kWidgetMesh, m_kWidgetState, RIGHT_EDGE, SPHERE_RADIUS, TOP_EDGE

Constructor Summary

Constructors
Constructor	Description
`TriangleClassificationWidget(int iX, int iY, WildMagic.LibFoundation.Mathematics.Vector2f kTMin, WildMagic.LibFoundation.Mathematics.Vector2f kTMax, WildMagic.LibGraphics.Rendering.Texture kTexture, int iWidth, int iHeight)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected float`	`areaTwice(float ptAx, float ptAy, float ptBx, float ptBy, float ptCx, float ptCy)`	Determines which side of the line a point lies on, used for determining if a point is inside or outside a closed loop.
`private WildMagic.LibFoundation.Mathematics.Vector3f`	`computeIntersect(WildMagic.LibFoundation.Mathematics.Vector3f p0, WildMagic.LibFoundation.Mathematics.Vector3f v0, WildMagic.LibFoundation.Mathematics.Vector3f p1, WildMagic.LibFoundation.Mathematics.Vector3f v1, boolean onLine)`	Computes the intersection between two lines.
`protected void`	`CreateTriangle(int iX, int iY, WildMagic.LibGraphics.Rendering.Texture kTexture)`	Creates the triangle widget and control points:
`private boolean`	`insideTri(float fX, float fY)`	Determines if the input position is inside the triangle widget.
`boolean`	`Pick(WildMagic.LibGraphics.Rendering.Renderer kRenderer, int iX, int iY)`	Abstract picking.
`void`	`processMouseDrag(int iX0ld, int iYOld, int iButton, java.awt.event.MouseEvent e)`
`private void`	`readObject(java.io.ObjectInputStream in)`	Read this object from disk.
`protected void`	`ScaleTriangle(java.awt.event.MouseEvent e, int position, WildMagic.LibGraphics.SceneGraph.TriMesh sphere)`	Resizes the triangle using the lower-control point:
`void`	`setPicked(boolean bPicked)`	Clears or sets the current picked object, sets the outline color to red when picked, blue when not selected.
`void`	`setTexture(WildMagic.LibGraphics.Rendering.Texture kTexture)`	Sets the histogram Texture map for the widget shader effect.
`void`	`ShiftMidTriangle(java.awt.event.MouseEvent e)`	Move the middle-control point which controls the transfer function in the triangle:
`protected void`	`ShiftTriangle(java.awt.event.MouseEvent e)`	Shifts the triangle along the bottom edge of the 2D Histogram, using the bottom control-point.
`private void`	`updateCenterXY(float fX, float fY)`
`void`	`updateDisplay()`	Updates the ShaderEffect parameters for this widget.
`private void`	`writeObject(java.io.ObjectOutputStream out)`	Stream this object to disk.

Methods inherited from class gov.nih.mipav.view.renderer.WildMagic.Render.MultiDimensionalTransfer.ClassificationWidget
calcObjX, calcObjY, calcScreenX, calcScreenY, calcTCoordX, calcTCoordY, clearPicked, dispose, getCenter, getColor, getLUTIndex, getSavedWidgetState, getState, getType, getWidget, Pick, setAlpha, setBoundary, setColor, setLUT, setState

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - serialVersionUID
```
private static final long serialVersionUID
```
    See Also:
    
    Constant Field Values
  - m_fCenterX
```
private float m_fCenterX
```
    Current parameterized coordinates for the center control point in X (used to maintain relative position when resizing the widget).
  - m_fCenterY
```
private float m_fCenterY
```
    Current parameterized coordinates for the center control point in Y (used to maintain relative position when resizing the widget).
  - m_kLeftSphere
```
protected WildMagic.LibGraphics.SceneGraph.TriMesh m_kLeftSphere
```
- Constructor Detail
  - TriangleClassificationWidget
```
public TriangleClassificationWidget(int iX,
                                    int iY,
                                    WildMagic.LibFoundation.Mathematics.Vector2f kTMin,
                                    WildMagic.LibFoundation.Mathematics.Vector2f kTMax,
                                    WildMagic.LibGraphics.Rendering.Texture kTexture,
                                    int iWidth,
                                    int iHeight)
```
    Parameters:
    
    iX - location in MouseEvent Coordinates.
    
    iY - location in MouseEvent Coordinates.
    
    kTMin - minimum texture coordinates for the 2D histogram, used for the image background. (Defaults 0-1)
    
    kTMax - maximum texture coordinates for the 2D histogram, used for the image background. (Defaults 0-1)
    
    kTexName - 2D Histogram texture name.
    
    iWidth - canvas width (default 256)
    
    iHeight - canvas height (default 256)
- Method Detail
  - Pick
```
public boolean Pick(WildMagic.LibGraphics.Rendering.Renderer kRenderer,
                    int iX,
                    int iY)
```
    Description copied from class: ClassificationWidget
    
    Abstract picking. Returns true if this widget, or one of it's control points was picked.
    
    Specified by:
    
    Pick in class ClassificationWidget
    
    iX - current mouse x position (MouseEvent coordinates).
    
    iY - current mouse y position (MouseEvent coordinates).
    
    Returns:
    
    true if this widget or one of it's control points was picked.
  - processMouseDrag
```
public void processMouseDrag(int iX0ld,
                             int iYOld,
                             int iButton,
                             java.awt.event.MouseEvent e)
```
    Specified by:
    
    processMouseDrag in class ClassificationWidget
    
    Parameters:
    
    iX0ld - old mouse x-position in MouseEvent coordinates.
    
    iYOld - old mouse y-position in MouseEvent coordinates.
    
    iButton - old mouse button.
    
    e - current MouseEvent
  - setPicked
```
public void setPicked(boolean bPicked)
```
    Clears or sets the current picked object, sets the outline color to red when picked, blue when not selected.
    
    Overrides:
    
    setPicked in class ClassificationWidget
    
    Parameters:
    
    bPicked - when true the widget is selected.
  - setTexture
```
public void setTexture(WildMagic.LibGraphics.Rendering.Texture kTexture)
```
    Description copied from class: ClassificationWidget
    
    Sets the histogram Texture map for the widget shader effect.
    
    Specified by:
    
    setTexture in class ClassificationWidget
  - ShiftMidTriangle
```
public void ShiftMidTriangle(java.awt.event.MouseEvent e)
```
    Move the middle-control point which controls the transfer function in the triangle:
    
    Parameters:
    
    e - MouseEvent
  - updateCenterXY
```
private void updateCenterXY(float fX,
                            float fY)
```
  - updateDisplay
```
public void updateDisplay()
```
    Description copied from class: ClassificationWidget
    
    Updates the ShaderEffect parameters for this widget.
    
    Specified by:
    
    updateDisplay in class ClassificationWidget
  - areaTwice
```
protected float areaTwice(float ptAx,
                          float ptAy,
                          float ptBx,
                          float ptBy,
                          float ptCx,
                          float ptCy)
```
    Determines which side of the line a point lies on, used for determining if a point is inside or outside a closed loop.
    
    Parameters:
    
    ptAx -
    
    ptAy -
    
    ptBx -
    
    ptBy -
    
    ptCx -
    
    ptCy -
    
    Returns:
  - CreateTriangle
```
protected void CreateTriangle(int iX,
                              int iY,
                              WildMagic.LibGraphics.Rendering.Texture kTexture)
```
    Creates the triangle widget and control points:
    
    Parameters:
    
    iX - mouse x-position in MouseEvent coordinates.
    
    iY - mouse y-position in MouseEvent coordinates.
    
    kTexName - 2D Histogram texture name.
  - ScaleTriangle
```
protected void ScaleTriangle(java.awt.event.MouseEvent e,
                             int position,
                             WildMagic.LibGraphics.SceneGraph.TriMesh sphere)
```
    Resizes the triangle using the lower-control point:
    
    Parameters:
    
    e - MouseEvent
  - ShiftTriangle
```
protected void ShiftTriangle(java.awt.event.MouseEvent e)
```
    Shifts the triangle along the bottom edge of the 2D Histogram, using the bottom control-point. Shift only moves the triangle to the left or right, not up or down.
    
    Parameters:
    
    e - MouseEvent
  - computeIntersect
```
private WildMagic.LibFoundation.Mathematics.Vector3f computeIntersect(WildMagic.LibFoundation.Mathematics.Vector3f p0,
                                                                      WildMagic.LibFoundation.Mathematics.Vector3f v0,
                                                                      WildMagic.LibFoundation.Mathematics.Vector3f p1,
                                                                      WildMagic.LibFoundation.Mathematics.Vector3f v1,
                                                                      boolean onLine)
```
    Computes the intersection between two lines.
    
    Parameters:
    
    p0 - starting position of line 0.
    
    v0 - line 0 direction vector.
    
    p1 - starting position of line 1.
    
    v1 - line 1 direction vector.
    
    Returns:
    
    intersection point.
  - insideTri
```
private boolean insideTri(float fX,
                          float fY)
```
    Determines if the input position is inside the triangle widget.
    
    Parameters:
    
    fX - x-position.
    
    fY - y-position.
    
    Returns:
    
    true if inside the triangle, false otherwise.
  - readObject
```
private void readObject(java.io.ObjectInputStream in)
                 throws java.io.IOException,
                        java.lang.ClassNotFoundException
```
    Read this object from disk.
    
    Parameters:
    
    in -
    
    Throws:
    
    java.io.IOException
    
    java.lang.ClassNotFoundException
  - writeObject
```
private void writeObject(java.io.ObjectOutputStream out)
                  throws java.io.IOException
```
    Stream this object to disk.
    
    Parameters:
    
    out -
    
    Throws:
    
    java.io.IOException

Class TriangleClassificationWidget

Field Summary

Fields inherited from class gov.nih.mipav.view.renderer.WildMagic.Render.MultiDimensionalTransfer.ClassificationWidget

Constructor Summary

Method Summary

Methods inherited from class gov.nih.mipav.view.renderer.WildMagic.Render.MultiDimensionalTransfer.ClassificationWidget

Methods inherited from class java.lang.Object

Field Detail

serialVersionUID

m_fCenterX

m_fCenterY

m_kLeftSphere

Constructor Detail

TriangleClassificationWidget

Method Detail

Pick

processMouseDrag

setPicked

setTexture

ShiftMidTriangle

updateCenterXY

updateDisplay

areaTwice

CreateTriangle

ScaleTriangle

ShiftTriangle

computeIntersect

insideTri

readObject

writeObject