agi.foundation.communications.antennas

(agi.foundation.communications-2025r1.jar)

Class PhasedArrayElement

java.lang.Object

agi.foundation.infrastructure.DefinitionalObject

agi.foundation.communications.antennas.PhasedArrayElement

All Implemented Interfaces:

ICloneWithContext, IEnumerateDependencies, IEquatableDefinition, IFreezable

public class PhasedArrayElement
extends DefinitionalObject

A DefinitionalObject which represents a single element of a phased array antenna. The element consists of an X and Y position and a flag indicating whether or not the element is currently enabled.

The X and Y position of the elements have units of wavelength and the center of the array is centered at X = 0.0 and Y = 0.0. The wavelength is based on the design frequency of the phase array antenna. Currently only planar arrays are modeled and therefore all elements reside in the antenna coordinate systems xy plane with 0.0 z component.

Constructor Summary

Constructors

Modifier	Constructor and Description
	PhasedArrayElement() Initializes a new instance.
	PhasedArrayElement(double x, double y) Initializes a new instance.
	PhasedArrayElement(double x, double y, boolean enabled) Initializes a new instance.
protected	PhasedArrayElement(PhasedArrayElement existingInstance, CopyContext context) Initializes a new instance as a copy of an existing instance.

Method Summary

Modifier and Type	Method and Description
protected boolean	checkForSameDefinition(DefinitionalObject other) Checks to determine if another instance has the same definition as this instance and returns true if it does.
protected boolean	checkForSameDefinition(PhasedArrayElement other) Checks to determine if another instance has the same definition as this instance and returns true if it does.
Object	clone(CopyContext context) Clones this object using the specified context.
protected int	computeCurrentDefinitionHashCode() Computes a hash code based on the current properties of this object.
boolean	getEnabled() Gets a value indicating whether the element is enabled, where true indicates enabled and false indicates disabled.
double	getXPosition() Gets the x position of the element in units of wavelength computed from the design frequency.
double	getYPosition() Gets the y position of the element in units of wavelength computed from the design frequency.
void	setEnabled(boolean value) Sets a value indicating whether the element is enabled, where true indicates enabled and false indicates disabled.
void	setXPosition(double value) Sets the x position of the element in units of wavelength computed from the design frequency.
void	setYPosition(double value) Sets the y position of the element in units of wavelength computed from the design frequency.

Methods inherited from class agi.foundation.infrastructure.DefinitionalObject

areSameDefinition, areSameDefinition, areSameDefinition, areSameDefinition, areSameDefinition, collectionItemsAreSameDefinition, collectionItemsAreSameDefinition, collectionItemsAreSameDefinition, dictionaryItemsAreSameDefinition, enumerateDependencies, freeze, freezeAggregatedObjects, getCollectionHashCode, getCollectionHashCode, getCollectionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDictionaryHashCode, getIsFrozen, isSameDefinition, throwIfFrozen

Methods inherited from class java.lang.Object

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

Constructor Detail

PhasedArrayElement

public PhasedArrayElement()

Initializes a new instance.

Defaults to XPosition (get / set) = 0.0, YPosition (get / set) = 0.0, and Enabled (get / set) = true.

PhasedArrayElement

public PhasedArrayElement(double x,
                          double y)

Initializes a new instance.

Defaults to Enabled = true.

Parameters:

x - X position of the element in units of wavelength computed from the design frequency.

y - Y position of the element in units of wavelength computed from the design frequency.

PhasedArrayElement

public PhasedArrayElement(double x,
                          double y,
                          boolean enabled)

Initializes a new instance.

Parameters:

x - X position of the element in units of wavelength computed from the design frequency.

y - Y position of the element in units of wavelength computed from the design frequency.

enabled - Indicates whether or not the element is currently enabled. true means the element is enabled and false means the element is disabled.

PhasedArrayElement

protected PhasedArrayElement(@Nonnull
                             PhasedArrayElement existingInstance,
                             @Nonnull
                             CopyContext context)

Initializes a new instance as a copy of an existing instance.

See ICloneWithContext.clone(CopyContext) for more information about how to implement this constructor in a derived class.

Parameters:

existingInstance - The existing instance to copy.

context - A CopyContext that controls the depth of the copy.

Throws:

ArgumentNullException - Thrown when existingInstance or context is null.

Method Detail

clone

public Object clone(CopyContext context)

Clones this object using the specified context.

This method should be implemented to call a copy constructor on the class of the object being cloned. The copy constructor should take the CopyContext as a parameter in addition to the existing instance to copy. The copy constructor should first call CopyContext.addObjectMapping(T, T) to identify the newly constructed instance as a copy of the existing instance. It should then copy all fields, using CopyContext.updateReference(T) to copy any reference fields.

A typical implementation of ICloneWithContext:

public static class MyClass implements ICloneWithContext {
    public MyClass(MyClass existingInstance, CopyContext context) {
        context.addObjectMapping(existingInstance, this);
        someReference = context.updateReference(existingInstance.someReference);
    }

    @Override
    public final Object clone(CopyContext context) {
        return new MyClass(this, context);
    }

    private Object someReference;
}

In general, all fields that are reference types should be copied with a call to CopyContext.updateReference(T). There are a couple of exceptions:

1. Fields that are aggregate parts of the object should always be copied. A referenced object is an aggregate if properties or methods on the object being copied can modify the externally-visible value of the referenced object.
2. If the semantics of the referenced object require that it have a single parent, owner, context, etc., and the object being copied is that parent, owner, or context, then the referenced object should always be copied.

If one of these exceptions applies, the CopyContext should be given an opportunity to update the reference before the reference is copied explicitly. Use CopyContext.updateReference(T) to update the reference. If CopyContext.updateReference(T) returns the original object, indicating that the context does not have a replacement registered, then copy the object manually by invoking a Clone method, a copy constructor, or by manually constructing a new instance and copying the values.

alwaysCopy = context.updateReference(existingInstance.alwaysCopy);
if (existingInstance.alwaysCopy != null && alwaysCopy == existingInstance.alwaysCopy) {
    alwaysCopy = (AlwaysCopy) existingInstance.alwaysCopy.clone(context);
}

If you are implementing an evaluator (a class that implements IEvaluator), the IEvaluator.updateEvaluatorReferences(agi.foundation.infrastructure.CopyContext) method shares some responsibilities with the copy context constructor. Code duplication can be avoided by doing the following:

1. For references to other evaluators ONLY, simply assign the reference in the constructor instead of calling CopyContext.updateReference(T). You should still call CopyContext.updateReference(T) on any references to non-evaluators.
2. Call IEvaluator.updateEvaluatorReferences(agi.foundation.infrastructure.CopyContext) as the last line in the constructor and pass it the same CopyContext passed to the constructor.
3. Implement IEvaluator.updateEvaluatorReferences(agi.foundation.infrastructure.CopyContext) as normal. See the reference documentation for IEvaluator.updateEvaluatorReferences(agi.foundation.infrastructure.CopyContext) for more information on implementing that method.

public MyClass(MyClass existingInstance, CopyContext context) {
    super(existingInstance, context);
    someReference = context.updateReference(existingInstance.someReference);
    evaluatorReference = existingInstance.evaluatorReference;
    updateEvaluatorReferences(context);
}

@Override
public void updateEvaluatorReferences(CopyContext context) {
    evaluatorReference = context.updateReference(evaluatorReference);
}

@Override
public Object clone(CopyContext context) {
    return new MyClass(this, context);
}

private Object someReference;
private IEvaluator evaluatorReference;

Specified by:

clone in interface ICloneWithContext

Specified by:

clone in class DefinitionalObject

Parameters:

context - The context to use to perform the copy.

Returns:

A new instance which is a copy of this object.

checkForSameDefinition

protected final boolean checkForSameDefinition(DefinitionalObject other)

Checks to determine if another instance has the same definition as this instance and returns true if it does. Derived classes MUST override this method and check all new fields introduced by the derived class for definitional equivalence. It is NOT necessary to check base class fields because the base class will already have done that. When overriding this method, you should NOT call the base implementation because it will return false for all derived-class instances. Derived classes should check the type of other to preserve the symmetric nature of IEquatableDefinition.isSameDefinition(java.lang.Object).

Specified by:

checkForSameDefinition in class DefinitionalObject

Parameters:

other - The other instance to compare to this one.

Returns:

true if the two objects are defined equivalently; otherwise false.

checkForSameDefinition

protected boolean checkForSameDefinition(PhasedArrayElement other)

Checks to determine if another instance has the same definition as this instance and returns true if it does. Derived classes MUST override this method and check all new fields introduced by the derived class for definitional equivalence. It is NOT necessary to check base class fields because the base class will already have done that. When overriding this method, you should NOT call the base implementation because it will return false for all derived-class instances. Derived classes should check the type of other to preserve the symmetric nature of IEquatableDefinition.isSameDefinition(java.lang.Object).

Parameters:

other - The other instance to compare to this one.

Returns:

true if the two objects are defined equivalently; otherwise false.

computeCurrentDefinitionHashCode

protected int computeCurrentDefinitionHashCode()

Computes a hash code based on the current properties of this object. Derived classes MUST override this method and compute a hash code that combines: a unique hash code seed, the base implementation result, and the hash codes of all new fields introduced by the derived class which are used in the PhasedArrayElement.checkForSameDefinition(agi.foundation.infrastructure.DefinitionalObject) method.

Overrides:

computeCurrentDefinitionHashCode in class DefinitionalObject

Returns:

The computed hash code.

getXPosition

public final double getXPosition()

Gets the x position of the element in units of wavelength computed from the design frequency.

setXPosition

public final void setXPosition(double value)

Sets the x position of the element in units of wavelength computed from the design frequency.

getYPosition

public final double getYPosition()

Gets the y position of the element in units of wavelength computed from the design frequency.

setYPosition

public final void setYPosition(double value)

Sets the y position of the element in units of wavelength computed from the design frequency.

getEnabled

public final boolean getEnabled()

Gets a value indicating whether the element is enabled, where true indicates enabled and false indicates disabled.

setEnabled

public final void setEnabled(boolean value)

Sets a value indicating whether the element is enabled, where true indicates enabled and false indicates disabled.