visad.bom
Class PickManipulationRendererJ2D

java.lang.Object
  visad.DataRenderer
      visad.java2d.RendererJ2D
          visad.java2d.DirectManipulationRendererJ2D
              visad.bom.PickManipulationRendererJ2D

All Implemented Interfaces:

Cloneable

public class PickManipulationRendererJ2D
extends DirectManipulationRendererJ2D

PickManipulationRendererJ2D is the VisAD class for picking data in 2D.

Field Summary

Fields inherited from class visad.DataRenderer

enabled, pickCrawlToCursor

Constructor Summary

PickManipulationRendererJ2D()
Default constructor

PickManipulationRendererJ2D(int mmm, int mmv)
Construct a new PickManipulationRenderer using the mouseModifiers supplied.

Method Summary

void	addPoint(float[] x) Add a point.
float	checkClose(double[] origin, double[] direction) Check if ray intersects sub-manifold.
void	checkDirect() Check if direct manipulation is possible.
void	drag_direct(VisADRay ray, boolean first, int mouseModifiers) Actual workhorse method of manipulation renderer.
int	getCloseIndex() Return the index of the closes point.
CoordinateSystem	getDisplayCoordinateSystem() Get the CoordinateSystem for the display side.
String	getWhyNotDirect() If direct manipulation is not possible, get the error message explaining why.
static void	main(String[] args) test PickManipulationRendererJ2D
void	setSpatialValues(float[][] spatial_values) Set spatialValues from ShadowType.doTransform

Methods inherited from class visad.java2d.DirectManipulationRendererJ2D

clone, doTransform, getExtraBranch, isLegalTextureMap, setLinks

Methods inherited from class visad.java2d.RendererJ2D

clearBranch, clearScene, doAction, makeShadowFunctionType, makeShadowRealTupleType, makeShadowRealType, makeShadowSetType, makeShadowTextType, makeShadowTupleType, toggle

Methods inherited from class visad.DataRenderer

addException, checkAction, clearAVControls, clearExceptions, computeRanges, constrainDragPoint, earthToSpatial, earthToSpatial, findRayManifoldIntersection, get_all_feasible, get_any_changed, get_any_transform_control, getBadScale, getDisplay, getDisplayRenderer, getEarthDimension, getEarthUnits, getEnabled, getExceptionVector, getIsDirectManipulation, getLastMouseModifiers, getLatLonIndices, getLatLonRange, getLink, getLinks, getPickCrawlToCursor, getRanges, getRealVectorTypes, isTransformControl, prepareAction, realCheckDirect, release_direct, removeLink, set_all_feasible, setDisplay, setDisplayRenderer, setEarthSpatialData, setEarthSpatialDisplay, setIsDirectManipulation, setLastMouseModifiers, setLatLonIndices, setLinks, setPickCrawlToCursor, spatialToEarth, spatialToEarth, stop_direct, suppressExceptions

Methods inherited from class java.lang.Object

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

Constructor Detail

PickManipulationRendererJ2D

public PickManipulationRendererJ2D()

Default constructor

PickManipulationRendererJ2D

public PickManipulationRendererJ2D(int mmm,
                                   int mmv)

Construct a new PickManipulationRenderer using the mouseModifiers supplied. mmm and mmv determine whehter SHIFT or CTRL keys are required - This is needed since this is a greedy DirectManipulationRenderer that will grab any right mouse click (that intersects its 2-D sub-manifold).

Parameters:

mmm - mouse modifiers mask.

mmv - mouse modifiers value.

Method Detail

checkDirect

public void checkDirect()
                 throws VisADException,
                        RemoteException

Check if direct manipulation is possible.

Overrides:

checkDirect in class DirectManipulationRendererJ2D

Throws:

VisADException - a VisAD error occurred

RemoteException - an RMI error occurred

getWhyNotDirect

public String getWhyNotDirect()

If direct manipulation is not possible, get the error message explaining why.

Overrides:

getWhyNotDirect in class DataRenderer

Returns:

error message. Will be null if no errors.

addPoint

public void addPoint(float[] x)
              throws VisADException

Add a point. a no-op at this point.

Overrides:

addPoint in class DirectManipulationRendererJ2D

Parameters:

x - point value.

Throws:

VisADException - a VisAD error occurred

getDisplayCoordinateSystem

public CoordinateSystem getDisplayCoordinateSystem()

Get the CoordinateSystem for the display side.

Overrides:

getDisplayCoordinateSystem in class DataRenderer

Returns:

null for this DataRenderer

setSpatialValues

public void setSpatialValues(float[][] spatial_values)

Set spatialValues from ShadowType.doTransform

Overrides:

setSpatialValues in class DataRenderer

Parameters:

spatial_values - X, Y, Z values

checkClose

public float checkClose(double[] origin,
                        double[] direction)

Check if ray intersects sub-manifold.

Overrides:

checkClose in class DataRenderer

Parameters:

origin - x,y,z values of the ray

direction - x,y,z values of the ray?

Returns:

distance from the spatial values.

getCloseIndex

public int getCloseIndex()

Return the index of the closes point.

Returns:

index of closest point

drag_direct

public void drag_direct(VisADRay ray,
                        boolean first,
                        int mouseModifiers)

Actual workhorse method of manipulation renderer. It's what gets called when the click is done.

Overrides:

drag_direct in class DataRenderer

Parameters:

ray - ray of point where click is.

first - if this is the first time.

mouseModifiers - modifiers used with the mouse.

main

public static void main(String[] args)
                 throws VisADException,
                        RemoteException

test PickManipulationRendererJ2D

Throws:

VisADException

RemoteException