slogo.instruction.drawing
Class Heading

java.lang.Object
  extended by slogo.language.GrammarElement
      extended by slogo.instruction.Instruction
          extended by slogo.instruction.arithmetic.NumericInstruction
              extended by slogo.instruction.drawing.Heading

public class Heading
extends NumericInstruction

Author:
tshishikub

Field Summary
 
Fields inherited from class slogo.language.GrammarElement
gelementsToValue
 
Constructor Summary
Heading()
           
 
Method Summary
 java.lang.Double evaluate(Context c)
          Evaluate this language construct in some context.
 
Methods inherited from class slogo.instruction.Instruction
evaluateNumericExpression
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Heading

public Heading()
Method Detail

evaluate

public java.lang.Double evaluate(Context c)
Description copied from class: GrammarElement
Evaluate this language construct in some context. The evaluation may have side-effects, e.g., moving a turtle.

Specified by:
evaluate in class NumericInstruction
Parameters:
c - context in which the evaluation takes place
Returns:
the turtle's heading in degrees