ilog.views.maps.defense.terrain

Class IlvMakeAreaOfSightInteractor

java.lang.Object

ilog.views.IlvManagerViewInteractor

ilog.views.interactor.IlvAbstractScrollInteractor

ilog.views.interactor.IlvDragRectangleInteractor

ilog.views.maps.defense.terrain.IlvMakeGradientInteractor

ilog.views.maps.defense.terrain.IlvMakeAreaOfSightInteractor

All Implemented Interfaces:

IlvPersistentObject, IlvImageComputation, IlvMapLayerStyleControl, Serializable

public class IlvMakeAreaOfSightInteractor
extends IlvMakeGradientInteractor

This interactor uses altitude information to display the area of visibility around a point. Since JViews 7.5

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
IlvMakeAreaOfSightInteractor() Creates an interactor.
IlvMakeAreaOfSightInteractor(IlvInputStream stream) Stream constructor.

Method Summary

Modifier and Type	Method and Description
protected void	attach(IlvManagerView v) overridden to access the altitude provider.
short[]	buildImage(IlvRasterProperties p, IlvThreadMonitoringData monitorInfo, IlvManager manager, IlvGradientRasterStyle rstyle) Returns a table of pixel values computed for the parameter passed.
protected short	computeVisibility(IlvManager manager, double lon1, double lat1, double lon2, double lat2, IlvLineOfSightRasterStyle style) Default algorithm to compute visibility between two lat/lon points.
protected void	createObject(IlvRect rect, IlvMapLayer ml) Creates the gradient object when the user finishes a rectangular selection.
protected void	detach() This method is called when the interactor is detached from the view.
protected void	drawGhost(Graphics g) computes and displays the inter-visibility area.
protected String	getActivityDescription() Returns the activity description displayed in the thread monitor.
protected String	getDialogTitle() Returns the settings dialog title.
protected String	getLayerName() Returns the layer name to use when creating an image.
IlvGradientRasterStyle	makeStyle(IlvRasterAbstractReader r) Creates a style for this reader.
boolean	mustReload(StyleEvent event) Indicates if a specific style event necessitates rebuilding the raster data source.
void	write(IlvOutputStream stream) Writes the attributes of a persistent object.

Methods inherited from class ilog.views.maps.defense.terrain.IlvMakeGradientInteractor

createMapInsertionLayer, getSlope, mustReload

Methods inherited from class ilog.views.interactor.IlvDragRectangleInteractor

addRectangleDraggedListener, dragscroll, fireRectangleDraggedEvent, getCursor, getDraggedRectangle, getLineStyle, getRectangleAspectRatio, getStartDragModifier, getStartPoint, handleButtonDown, handleButtonDragged, handleButtonUp, isGridMode, isOpaqueMode, isRotationAllowed, isStartDragModifierDown, isXORGhost, processMouseEvent, processMouseMotionEvent, removeRectangleDraggedListener, setCursor, setGridMode, setLineStyle, setOpaqueMode, setRectangleAspectRatio, setRotationAllowed, setStartDragModifier

Methods inherited from class ilog.views.interactor.IlvAbstractScrollInteractor

adjustPointIfOutsideView, doAutoScroll, getMaximumScrollDistance, getScrollTiming, isProgressiveScroll, setMaximumScrollDistance, setProgressiveScroll, setScrollTiming, startDraggingScrollTimer, stopDraggingScrollTimer

Methods inherited from class ilog.views.IlvManagerViewInteractor

addFocusListener, addKeyListener, addMouseListener, addMouseMotionListener, allowEnsureVisible, allowEnsureVisible, disableEvents, drawGhost, enableEvents, ensureVisible, ensureVisible, getManager, getManagerView, getTransformer, handleExpose, processEvent, processFocusEvent, processKeyEvent, removeFocusListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, setXORGhost

Methods inherited from class java.lang.Object

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

Constructor Detail

IlvMakeAreaOfSightInteractor

public IlvMakeAreaOfSightInteractor()

Creates an interactor.

IlvMakeAreaOfSightInteractor

public IlvMakeAreaOfSightInteractor(IlvInputStream stream)

Stream constructor.

Parameters:

stream - stream to read from.

Method Detail

drawGhost

protected void drawGhost(Graphics g)

computes and displays the inter-visibility area. This method creates a fake style, using makeStyle(IlvRasterAbstractReader) to get the default height and color of the interactor.

Overrides:

drawGhost in class IlvDragRectangleInteractor

Parameters:

g - The Graphics.

See Also:

IlvManagerViewInteractor.drawGhost(java.awt.Graphics)

attach

protected void attach(IlvManagerView v)

overridden to access the altitude provider.

Overrides:

attach in class IlvDragRectangleInteractor

Parameters:

v - The manager view.

See Also:

IlvManagerViewInteractor.attach(ilog.views.IlvManagerView)

detach

protected void detach()

This method is called when the interactor is detached from the view.

Overrides:

detach in class IlvDragRectangleInteractor

See Also:

IlvManagerViewInteractor.attach(ilog.views.IlvManagerView)

createObject

protected void createObject(IlvRect rect,
                            IlvMapLayer ml)

Creates the gradient object when the user finishes a rectangular selection.

Overrides:

createObject in class IlvMakeGradientInteractor

Parameters:

rect - The manager coordinates of the rectangle selected.

ml - The map layer to add the gradient to.

See Also:

IlvMakeGradientInteractor.createObject(ilog.views.IlvRect, ilog.views.maps.beans.IlvMapLayer)

makeStyle

public IlvGradientRasterStyle makeStyle(IlvRasterAbstractReader r)

Creates a style for this reader.

Overrides:

makeStyle in class IlvMakeGradientInteractor

Parameters:

r - reader passed to the style constructor.

Returns:

an IlvValleyRasterStyle using the correct color model.

mustReload

public boolean mustReload(StyleEvent event)

Indicates if a specific style event necessitates rebuilding the raster data source.

Specified by:

mustReload in interface IlvMapLayerStyleControl

Overrides:

mustReload in class IlvMakeGradientInteractor

Parameters:

event - The event sent by the StyleListener instance installed on the layer style.

Returns:

When a rebuild is necessary, true is returned.

See Also:

IlvMakeGradientInteractor.mustReload(ilog.views.maps.graphic.style.StyleEvent)

buildImage

public short[] buildImage(IlvRasterProperties p,
                          IlvThreadMonitoringData monitorInfo,
                          IlvManager manager,
                          IlvGradientRasterStyle rstyle)

Returns a table of pixel values computed for the parameter passed.

The following code example shows how to implement this method:

 IlvAltitudeProvider pr = IlvAltitudeProviderProperty.GetAltitudeProvider(manager);
 int ncols = properties.getColumnPixelCount();
 int nligs = properties.getLinePixelCount();
 short pixels[] = new short[ncols * nligs];
 monitorInfo.updateProgress(10);
 for (int y = 0; y < nligs; y++) {
   for (int x = 0; x < ncols; x++) {
      double xlon = p.getX() + x * p.getHorizontalPixelDensity();
      double ylat = p.getY() + y * p.getVerticalPixelDensity();
      double slope = pr.getAltitude(manager, xlon, ylat, 0);
      pixels[y * ncols + x] = (short) (slope);
   }
 }
 monitorInfo.updateProgress(100);
 return pixels;
 

Specified by:

buildImage in interface IlvImageComputation

Overrides:

buildImage in class IlvMakeGradientInteractor

Parameters:

p - The raster properties of the image to create.

monitorInfo - The thread monitoring reference.

manager - The manager to create the image for.

rstyle - The style of the raster image.

Returns:

The table of pixels to be displayed in the raster image. This is compatible with the properties color model.

See Also:

IlvMakeGradientInteractor.buildImage(ilog.views.maps.raster.IlvRasterProperties, ilog.views.maps.raster.datasource.IlvThreadMonitoringData, ilog.views.IlvManager, ilog.views.maps.defense.terrain.IlvGradientRasterStyle)

computeVisibility

protected short computeVisibility(IlvManager manager,
                                  double lon1,
                                  double lat1,
                                  double lon2,
                                  double lat2,
                                  IlvLineOfSightRasterStyle style)

Default algorithm to compute visibility between two lat/lon points.

Parameters:

manager - Manager to use the altitude provider with.

lon1 - longitude in radians of point 1.

lat1 - latitude in radians of point 1.

lon2 - longitude in radians of point 2.

lat2 - latitude in radians of point 2.

style - style containing the algorithm parameters.

Returns:

0 if invisible, 1 if visible.

getActivityDescription

protected String getActivityDescription()

Returns the activity description displayed in the thread monitor.

Overrides:

getActivityDescription in class IlvMakeGradientInteractor

Returns:

The activity description displayed in the thread monitor.

See Also:

IlvMakeGradientInteractor.getActivityDescription()

getDialogTitle

protected String getDialogTitle()

Returns the settings dialog title.

Overrides:

getDialogTitle in class IlvMakeGradientInteractor

Returns:

Returns the settings dialog title.

getLayerName

protected String getLayerName()

Returns the layer name to use when creating an image.

Overrides:

getLayerName in class IlvMakeGradientInteractor

Returns:

The layer name.

See Also:

IlvMakeGradientInteractor.getLayerName()

write

public void write(IlvOutputStream stream)

Writes the attributes of a persistent object.

Specified by:

write in interface IlvPersistentObject

Overrides:

write in class IlvMakeGradientInteractor

Parameters:

stream - the output stream

See Also:

IlvPersistentObject.write(ilog.views.io.IlvOutputStream)