visad.util
Class ResSwitcher

java.lang.Object
  visad.util.DualRes
      visad.util.ResSwitcher

All Implemented Interfaces:

ActivityHandler

public class ResSwitcher
extends DualRes
implements ActivityHandler

Handles automatic toggling between a high-resolution representation and a low-resolution one for a data object. When the display is busy, the low-resolution representation is used for faster response time. When the display is idle, the high-resolution representation is used for greater detail.

Field Summary

Fields inherited from class visad.util.DualRes

DEBUG, hi_ref, lo_ref

Constructor Summary

ResSwitcher(LocalDisplay d, DataReferenceImpl ref)
Constructs a resolution switcher for swapping between high- and low- resolution representations for the referenced data on the given display.

ResSwitcher(LocalDisplay d, DataReferenceImpl ref, DataRenderer renderer, ConstantMap[] cmaps)
Constructs a resolution switcher for swapping between high- and low- resolution representations for the referenced data on the given display.

Method Summary

void	busyDisplay(LocalDisplay d) Swaps in the low-resolution data when the display is busy.
void	idleDisplay(LocalDisplay d) Swaps in the high-resolution data when the display is idle.
static void	main(String[] args) Run 'java visad.util.ResSwitcher data_file' to test ResSwitcher.
void	unlink() Unlinks the resolution switcher from its display.

Methods inherited from class visad.util.DualRes

getHighResReference, getLowResReference, getResolutionScale, rescale, rescale, setResolutionScale

Methods inherited from class java.lang.Object

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

Constructor Detail

ResSwitcher

public ResSwitcher(LocalDisplay d,
                   DataReferenceImpl ref)
            throws VisADException,
                   RemoteException

Constructs a resolution switcher for swapping between high- and low- resolution representations for the referenced data on the given display.

Throws:

VisADException

RemoteException

ResSwitcher

public ResSwitcher(LocalDisplay d,
                   DataReferenceImpl ref,
                   DataRenderer renderer,
                   ConstantMap[] cmaps)
            throws VisADException,
                   RemoteException

Constructs a resolution switcher for swapping between high- and low- resolution representations for the referenced data on the given display.

Parameters:

renderer - The data renderer to be used for the low-res rendering.

cmaps - The ConstantMaps to be used for the low-res rendering.

Throws:

VisADException

RemoteException

Method Detail

unlink

public void unlink()
            throws VisADException

Unlinks the resolution switcher from its display.

Throws:

VisADException

busyDisplay

public void busyDisplay(LocalDisplay d)

Swaps in the low-resolution data when the display is busy.

Specified by:

busyDisplay in interface ActivityHandler

Parameters:

d - Busy Display.

idleDisplay

public void idleDisplay(LocalDisplay d)

Swaps in the high-resolution data when the display is idle.

Specified by:

idleDisplay in interface ActivityHandler

Parameters:

d - Idle Display.

main

public static void main(String[] args)
                 throws Exception

Run 'java visad.util.ResSwitcher data_file' to test ResSwitcher.

Throws:

Exception