public class Turtle
extends java.lang.Object
Constructor and Description 

Turtle()
Creates a white turtle using the following defaults:
 Turtle color white  Position (0, 0), center of playground  Pen color white  Heading north 
Turtle(double x,
double y)
Creates a white turtle at given position using the following other defaults:
 Pen color white  Heading north 
Turtle(double x,
double y,
int color)
Creates a turtle with given color at given position using the
following other defaults:
 Pen color white  Heading north 
Turtle(int color)
Creates a turtle with given color using the
following other defaults:
 Position (0, 0), center of playground  Pen color white  Heading north 
Modifier and Type  Method and Description 

Turtle 
back(double s)
Moves the turtle back.

static void 
beep()
Emits a beep (1000 Hz sine wave of 100 ms duration).

Turtle 
bk(double s)
Short for back().

static void 
clean()
Erases the playground by filling it with the current playground color.

static void 
clean(int color)
Erases the playground by filling it with the given color.

static void 
clear()
Clears the playground by filling it with the current playground color.

static void 
clear(int color)
Clears the playground by filling it with the given color.

Turtle 
clone()
Creates a clone of the current turtle by performing a
deep copy of all its properties.

double 
distance(double x,
double y)
Returns the distance from the current position to the given position.

Turtle 
dot()
Draws a single point (dot) at the current turtle position using the
current pen color.

Turtle 
fd(double s)
Short for forward().

Turtle 
fill()
Same as fill(x, y), but uses the current turtle position.

Turtle 
fill(double x,
double y)
Fills a bounded region of the playground with the current
pen color (flood fill).

Turtle 
fillOff()
Stops the filling started by calling fillToPoint(),
fillToHorizontal() or fillToVertical().

Turtle 
fillToHorizontal(double y)
Draws a imaginary horizonatal line at given y coordinate.

Turtle 
fillToPoint(double x,
double y)
Attachs a imaginary rubber band between the turtle and the given
anchor point.

Turtle 
fillToVertical(double x)
Draws a imaginary vertical line at given x coordinate.

Turtle 
forward(double s)
Moves the turtle forward.

turtle.Actor 
getActor()
Returns the underlying turtle actor.

int 
getColor()
Returns the current turtle color.

double 
getHeading()
Returns the current heading (moving direction).

int 
getPenColor()
Returns the current pen color.

int 
getPenWidth()
Returns the current pen width.

static int 
getPopulationSize()
Get the total number of turtles (the global turtle is not counted).

int 
getSpeed()
Returns the current speed (0..10, 1 for MAXSPEED).

double 
getX()
Returns the current x coordinate.

double 
getY()
Returns the current y coordinate.

Turtle 
hideTurtle()
Hides the turtle.

Turtle 
home()
Puts the turtle at home (center of playground, coordinates (0, 0).

Turtle 
ht()
Short for hideTurtle().

boolean 
isBackValid(double s)
Checks if the backward movement using the given step moves
the turtle to a position outside the visible playground.

boolean 
isForwardValid(double s)
Checks if the forward movement using the given step moves
the turtle to a position outside the visible playground.

boolean 
isHidden()
Reports the current visibility of the turtle.

boolean 
isInPlayground()
Checks, if the turtle is inside or outside the playground.

boolean 
isOnBorder()
Returns true, if the turtle is on any of the 4 border lines.

boolean 
isOnBorder(int borderId)
Returns true, if the turtle is on the selected border line.

boolean 
isPenDown()
Reports the current pen state of the turtle.

Turtle 
label(java.lang.String text)
Same as label(text, textColor, textSize) with textColor = Color.WHITE
and textSize = 15.

Turtle 
label(java.lang.String text,
int textColor,
int textSize)
Paint the given text with given text color and given text height
at the current turtle position

Turtle 
left(double angle)
Turns the turtle to the left (counter clockwise).

Turtle 
lt(double angle)
Short for left().

Turtle 
moveTo(double x,
double y)
Moves the turtle to the given position.

Turtle 
pd()
Short for penDown().

Turtle 
penDown()
Lowers the turtle's pen, so it draws traces when it moves.

Turtle 
penUp()
Lifts the turtle's pen, so is does not draw traces when it moves.

Turtle 
pu()
Short for penUp().

Turtle 
right(double angle)
Turns the turtle to the right (clockwise).

Turtle 
rt(double angle)
Short for right().

Turtle 
setColor(int color)
Sets the current turtle color.

Turtle 
setHeading(double heading)
Sets the current heading (moving direction).

Turtle 
setPenColor(int color)
Sets the current pen color.

Turtle 
setPenWidth(int width)
Sets the current pen width.

Turtle 
setPos(double x,
double y)
Puts the turtle to the given position.

Turtle 
setSize(int size)
Sets the current turtle size.

Turtle 
setSpeed(int speed)
Sets the turtle's speed.

Turtle 
setX(double x)
Puts the turtle to the given x coordinate.

Turtle 
setY(double y)
Puts the turtle to the given y coordinate.

Turtle 
showTurtle()
Shows the turtle if it was hidden before.

static void 
sleep(int time)
Delays the execution for the given time.

Turtle 
st()
Short for showTurtle().

double 
towards(double x,
double y)
Returns the direction (heading) from the current position
to the given position.

public Turtle()
public Turtle(int color)
color
 the initial color of the turtle (may be Color.TRANSPARENT
to make the turtle invisible from the beginning)public Turtle(double x, double y)
x
 the x coordinate of the creation positiony
 the y coordinate of the creation positionpublic Turtle(double x, double y, int color)
x
 the x coordinate of the creation positiony
 the y coordinate of the creation positioncolor
 the initial color of the turtle (may be Color.TRANSPARENT
to make the turtle invisible from the beginning)public Turtle setSpeed(int speed)
speed
 the speed of the turtle (0..10, MAXSPEED)public int getSpeed()
public Turtle forward(double s)
s
 the step to move forward, if s < 0 moves backpublic Turtle fd(double s)
public Turtle back(double s)
s
 the step to move back, if s < 0 moves forwardpublic Turtle bk(double s)
public Turtle right(double angle)
angle
 the turning angle (in degrees), if angle < 0 turns leftpublic Turtle rt(double angle)
public Turtle left(double angle)
angle
 the turning angle (in degrees), if angle < 0 turns rightpublic Turtle lt(double angle)
public static void beep()
public static int getPopulationSize()
public static void clean()
public static void clean(int color)
public static void clear()
public static void clear(int color)
public Turtle hideTurtle()
public Turtle ht()
public boolean isHidden()
public Turtle showTurtle()
public Turtle st()
public int getColor()
public Turtle setColor(int color)
public Turtle setSize(int size)
size
 one of the constants Playground.SMALLSIZE, Playground.MEDIUMSIZE,
Playground.BIGSIZEpublic double getHeading()
public Turtle setHeading(double heading)
heading
 in degrees, 0 to north, clockwisepublic double towards(double x, double y)
x
 the x coordinate of the target positiony
 the y coordinate of the target positionpublic Turtle home()
public boolean isPenDown()
public Turtle penDown()
public Turtle pd()
public Turtle penUp()
public Turtle pu()
public int getPenWidth()
public Turtle setPenWidth(int width)
width
 the pen width in pixels (independent of current screen resolution)public int getPenColor()
public Turtle setPenColor(int color)
public Turtle label(java.lang.String text)
public Turtle label(java.lang.String text, int textColor, int textSize)
text
 the text to showtextColor
 the text colortextSize
 the text size in turtle coordinatespublic double distance(double x, double y)
x
 the x coordinate of the target positiony
 the y coordinate of the target positionpublic double getX()
public double getY()
public Turtle setPos(double x, double y)
x
 the new turtle's x coordinatey
 the new turtle's y coordinatepublic Turtle moveTo(double x, double y)
x
 the new turtle's x coordinatey
 the new turtle's y coordinatepublic Turtle dot()
public Turtle setX(double x)
x
 the new turtle's x coordinatepublic Turtle setY(double y)
y
 the new turtle's y coordinatepublic static void sleep(int time)
time
 the time to wait (in ms)public Turtle fill(double x, double y)
x
 the x coordinate of a point inside the regiony
 the y coordinate of a point inside the regionpublic Turtle fill()
public turtle.Actor getActor()
public boolean isOnBorder()
public boolean isOnBorder(int borderId)
borderId
 0: top border, 1: right border, 2: bottom border, 3: left borderpublic boolean isForwardValid(double s)
s
 the step to move forward, if s < 0 moves backpublic boolean isBackValid(double s)
s
 the step to move back, if s < 0 moves forwardpublic Turtle fillToPoint(double x, double y)
x
 the x coordinate of the anchor pointy
 the y coordinate of the anchor pointpublic Turtle fillToHorizontal(double y)
y
 the y coordinate of the horizontal linepublic Turtle fillToVertical(double x)
x
 the x coordinate of the vertical linepublic boolean isInPlayground()
public Turtle fillOff()
public Turtle clone()
clone
in class java.lang.Object