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Class primitives.machines.StraightLineMachine 

java.lang.Object
   |
   +----primitives.machines.StraightLineMachine
public class StraightLineMachine
extends Object
implements MachineListener
A class defining a Peacullier Linkage used by StraightLineDemo

Variable Index

o alpha
o bigCenter
o centralJoint
o d
o dcentralJoint
o demo
o doutputJoint
o dradialJoints
o leader
o leaderJoint
o line
o outputJoint
o p
o r
o radialJoints
o reachedEnd
o smallCenter
o temp
o tempPoints
o x
o y

Constructor Index

o StraightLineMachine(Dimension, boolean)

Method Index

o drawLine(Graphics, Point, Point)
o finalize()
Sets object fields to null.
o moveMachine(double)
preforms a motion of the machine
o redraw(Graphics)
Redraws the machine.
o restorePoints()
restores to the last valid state of the machine in case the current state is not valid.
o savePoints()
preform backup of last valid state incase next step is not legal.
o switchLeader()
switches between 2 supporting joints.

Variables

o bigCenter 
 public ExtPoint bigCenter
o smallCenter 
 public ExtPoint smallCenter
o radialJoints 
 public ExtPoint radialJoints[]
o dradialJoints 
 private Coordinate dradialJoints[]
o outputJoint 
 public ExtPoint outputJoint
o doutputJoint 
 private Coordinate doutputJoint
o centralJoint 
 public ExtPoint centralJoint
o dcentralJoint 
 private Coordinate dcentralJoint
o y 
 public double y
o x 
 public double x
o r 
 public int r
o alpha 
 public double alpha
o line 
 public int line
o leader 
 public Coordinate leader
o d 
 private Dimension d
o demo 
 private boolean demo
o leaderJoint 
 public int leaderJoint
o tempPoints 
 private Coordinate tempPoints[]
o temp 
 private Coordinate temp
o reachedEnd 
 static final String reachedEnd
o p 
 static final String p

Constructors

o StraightLineMachine 
 public StraightLineMachine(Dimension d,
                            boolean demo)
Parameters:
d - the size of the rectangle in which to draw the machine.
demo - if false draws circles and straight line of various joints.

Methods

o finalize 
 public void finalize() throws Throwable
Sets object fields to null.

Throws: Throwable
.
Overrides:
finalize in class Object
o savePoints 
 private void savePoints()
preform backup of last valid state incase next step is not legal.

o restorePoints 
 private void restorePoints()
restores to the last valid state of the machine in case the current state is not valid.

o switchLeader 
 public double switchLeader()
switches between 2 supporting joints. this is done in order to keep a well behaved motion without changing the moveMachine method to be based on the current state of the machine.

Returns:
the current angle of the straight motion joint
o moveMachine 
 public void moveMachine(double alpha) throws MachineException
preforms a motion of the machine

Parameters:
alpha - the angle to move the leader joint to.
Throws: MachineException
if the move is not valid.
o drawLine 
 private void drawLine(Graphics g,
                       Point p1,
                       Point p2)
o redraw 
 public void redraw(Graphics g)
Redraws the machine. If demo is set to true, blue circles and black line of motion of the various joint are also drawn.

Parameters:
g - the graphic context to draw to. 
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