org.escot
Interface FunctionEvaluator

All Superinterfaces:

EscotFeature

All Known Implementing Classes:

FunctionAdapter

public interface FunctionEvaluator

extends EscotFeature

A function

Field Summary

static String	DOMAIN_MAXIMUM_CLOSED Indicates that valid input must be less than or equal to the minimum, as "Closed" refers to an interval that includes the endpoints, i.e.
static String	DOMAIN_MAXIMUM_OPEN Indicates that valid input must be less than the minimum, as "Open" refers to an interval that does not include the endpoints, i.e.
static String	DOMAIN_MINIMUM_CLOSED Indicates that valid input must be greater than or equal to the minimum, as "Closed" refers to an interval that includes the endpoints, i.e.
static String	DOMAIN_MINIMUM_OPEN Indicates that valid input must be greater than the minimum, as "Open" refers to an interval that does not include the endpoints, i.e.

Fields inherited from interface org.escot.EscotFeature

COLOR_ATTRIBUTE, DESCRIPTION_ATTRIBUTE, ICON16x16_ATTRIBUTE, TYPE_ATTRIBUTE

Method Summary

void	addChangeListener(ChangeListener l) adds a change listener to this function, to be notified when the function definition changes
Number	evaluateAt(Number input) Evaluates the function at the given input.
void	removeChangeListener(ChangeListener l) removes a change listener from this function
String	toString() converts the function to a string representation

Methods inherited from interface org.escot.EscotFeature

addPropertyChangeListener, duplicate, getAttribute, getName, putAttribute, removePropertyChangeListener

Field Detail

DOMAIN_MINIMUM_OPEN

public static final String DOMAIN_MINIMUM_OPEN

Indicates that valid input must be greater than the minimum, as "Open" refers to an interval that does not include the endpoints, i.e. (a,b). Only 1 of DOMAIN_MINIMUM_OPEN or DOMAIN_MINIMUM_CLOSED should be present

DOMAIN_MINIMUM_CLOSED

public static final String DOMAIN_MINIMUM_CLOSED

Indicates that valid input must be greater than or equal to the minimum, as "Closed" refers to an interval that includes the endpoints, i.e. [a,b]. Only 1 of DOMAIN_MINIMUM_OPEN or DOMAIN_MINIMUM_CLOSED should be present

DOMAIN_MAXIMUM_OPEN

public static final String DOMAIN_MAXIMUM_OPEN

Indicates that valid input must be less than the minimum, as "Open" refers to an interval that does not include the endpoints, i.e. (a,b). Only 1 of DOMAIN_MAXIMUM_OPEN or DOMAIN_MAXIMUM_CLOSED should be present

DOMAIN_MAXIMUM_CLOSED

public static final String DOMAIN_MAXIMUM_CLOSED

Indicates that valid input must be less than or equal to the minimum, as "Closed" refers to an interval that includes the endpoints, i.e. [a,b]. Only 1 of DOMAIN_MAXIMUM_OPEN or DOMAIN_MAXIMUM_CLOSED should be present

Method Detail

evaluateAt

public Number evaluateAt(Number input)

Evaluates the function at the given input.

Parameters:

input - the number to evaluate the function at.

Returns:

the value of the function at the given input.

addChangeListener

public void addChangeListener(ChangeListener l)

adds a change listener to this function, to be notified when the function definition changes

Parameters:

l - a ChangeListener that wants to be notified of changes to this function

removeChangeListener

public void removeChangeListener(ChangeListener l)

removes a change listener from this function

Parameters:

l - a ChangeListener that no longer wants to listen to change events from this function

toString

public String toString()

converts the function to a string representation

Overrides:

toString in class Object

Returns:

either a MathML string or a raw character string representation of the function