fr.emn.reactiveinput.devices
Class DSwFocus

java.lang.Object
  fr.emn.reactiveinput.AbstractDevice
      fr.emn.reactiveinput.devices.DSwFocus

All Implemented Interfaces:

Device, Processor

public class DSwFocus

extends AbstractDevice

Field Summary

Out	id
In	next
In	prev

Fields inherited from class fr.emn.reactiveinput.AbstractDevice

currIndex, ins, outs

Fields inherited from interface fr.emn.reactiveinput.Device

AUTO_PROPERTIES

Constructor Summary

DSwFocus()

Method Summary

boolean	hasExternalInput() Specifies whether this device has external (implicit) input or not.
boolean	hasExternalOutput() Specifies whether this device has external (implicit) output or not.
Processor	open(OpenContext context) Subclass this method if you want to specialize data processing, or if you want to perform some initializations before running the device.
void	update() Updates device's output values.

Methods inherited from class fr.emn.reactiveinput.AbstractDevice

addIn, addIn, addOut, close, copy, doDisable, doEnable, finalize, getError, getIndex, getInfo, getIns, getName, getOuts, getProperties, init, insertAt, insertAtEnd, insertBefore, isCopiable, isEnabled, isOpenable, setEnabled, setInfo, setInfo, setLastError, setName

Methods inherited from class java.lang.Object

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

Field Detail

prev

public final In prev

next

public final In next

id

public final Out id

Constructor Detail

DSwFocus

public DSwFocus()

Method Detail

open

public Processor open(OpenContext context)

Description copied from class: AbstractDevice

Subclass this method if you want to specialize data processing, or if you want to perform some initializations before running the device.

By default, open() does nothing and returns the device itself as the Processor (or null if it is not openable): AbstractDevice implements both Device and Processor interfaces, so that you can add processing code directly into the device.

If you want to add specialization features, subclass this method to return a specific processor implementation depending on your device configuration.

Example :

public Processor getProcessor() { if (super.open() == null) return null; // Select the right processor if (in2.isValid()) { return new twoParamProcessor(in1, in2, out); else return new oneParamProcessor(in1, out); }

In this method, you may also perform all necessary pre-running initialization. If initialization fails, return null even if isOpenable() returns true.

In all cases, return null if isOpenable() returns false.

Specified by:

open in interface Device

Overrides:

open in class AbstractDevice

See Also:

Processor, Device.open()

update

public void update()

Description copied from class: AbstractDevice

Updates device's output values.

Subclass init() and update() methods if you want the device to process the data itself. Otherwise, subclass getProcessor() method to use extern processors.

Specified by:

update in interface Processor

Overrides:

update in class AbstractDevice

See Also:

Processor.update()

hasExternalInput

public boolean hasExternalInput()

Description copied from class: AbstractDevice

Specifies whether this device has external (implicit) input or not. Returns false by default.

Return false if the device is deterministic from the data & time points of view, i.e. if its output production only depend on the explicit input history (input slots) and device's initial configuration. This is the case of most of the processing devices.

Return true if output values not only depend on the values of input slots, or if output production takes undefined time. Examples of devices with external input are input peripherals and asynchronous devices.

This method is used by the reactive machine to determine if this device is triggered by its input slots, or if it must be triggered continuously (i.e. each tick). This method can also be used by the editor for the device's graphical representation.

Specified by:

hasExternalInput in interface Device

Overrides:

hasExternalInput in class AbstractDevice

hasExternalOutput

public boolean hasExternalOutput()

Description copied from class: AbstractDevice

Specifies whether this device has external (implicit) output or not. Returns false by default.

Return false if the device has no border effects. Most of input and processing devices are in this case.

Return true if the device has border effects, such as graphical feedback, or control of some external value. Examples of devices with external output are application-interfacing devices and all user feedback devices.

This method can be used by the editor for the device's graphical representation. However there is at now no clear definition of what is external output.

Specified by:

hasExternalOutput in interface Device

Overrides:

hasExternalOutput in class AbstractDevice