lab.art

Class VariableX

java.lang.Object

lab.art.Expression

lab.art.VariableX

public class VariableX
extends Expression

This class represents the variable x expression.

Constructor Summary

Constructors

Constructor and Description
VariableX() Initializes this variable x expression.

Method Summary

Methods

Modifier and Type	Method and Description
double	evaluate(double x, double y) Evaluates this variable x expression at the given x- and y-coordinate.
String	toString() Returns a string representation of this variable x expression.

Methods inherited from class java.lang.Object

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

Constructor Detail

VariableX

public VariableX()

Initializes this variable x expression.

Method Detail

evaluate

public double evaluate(double x,
              double y)

Evaluates this variable x expression at the given x- and y-coordinate.

Specified by:

evaluate in class Expression

Parameters:

x - the x-coordinate.

y - the y-coordinate.

Precondition:

x >= -1 && x <= 1, y >= -1 && y <= 1

Returns:

the value of this variable x expression at the given x- and y-coordinate.

toString

public String toString()

Returns a string representation of this variable x expression. The string consists of "x".

Overrides:

toString in class Object

Returns:

string representation of this variable x expression.