picasso.parser.language
Class ExpressionTreeNode

java.lang.Object
  picasso.parser.language.ExpressionTreeNode

All Implemented Interfaces:

EvaluatableExpression

Direct Known Subclasses:

Constant, Image, MultiArgFunction, PicassoString, RandomColor, RGBColor, UnaryFunction, Variable, X, Y

public abstract class ExpressionTreeNode
extends java.lang.Object
implements EvaluatableExpression

All elements of the language (e.g., that make up ExpressionTree) should extend ExpressionTreeNode.

Author:

Sara Sprenkle

Constructor Summary

ExpressionTreeNode()

Method Summary

abstract RGBColor

evaluate(double x, double y) Evaluate this expression, given x and y

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionTreeNode

public ExpressionTreeNode()

Method Detail

evaluate

public abstract RGBColor evaluate(double x,
                                  double y)

Evaluate this expression, given x and y

Specified by:

evaluate in interface EvaluatableExpression

Parameters:

x -

y -

Returns:

the result of evaluating the expression