Turtle Graphics Index

Setting up the turtle's world					Moving the turtle
Turtle state					Turtle size and speed
Turtle pen								Patterns
Turtle text								Turtle shapes
Turtle Properties					Dots, filling, and shapes
Coordinates								Customizing the graphics screen
Color commands

Setting up the turtle's world Top
CLEAN	erases the graphics screen
CLEARSCREEN	clears the graphics window
DRAW	clears the graphics window and resets the turtles
FULLSCREEN	maximizes the current Graphics window
SPLITSCREEN	Restores the Listener and Graphics window layout
Moving the turtle Top
BACK	move the turtle backwards
FORWARD	moves the turtle forward
HOME	moves the turtle back to [0 0]
LEFT	turns the turtle left
RIGHT	turns the turtle right
Turtle state Top
HEADING	reports the heading of the turtle
SETHEADING	sets the heading of a turtle
SHOWN?	checks whether a turtle is visible
SHOWTURTLE (ST)	shows a turtle
Turtle size and speed Top
SETSPEED	Sets the speed in which turtle commands are executed
SETTURTLESIZE (SETTSIZE)	sets the size of a turtle
SETVELOCITY	Sets the independent movement speed of the turtle
SLOWTURTLE	Slows the speed in which turtle commands are executed
SPEED	Retrieves the speed in which turtle commands are executed
TURTLESIZE	reports the size of a turtle
VELOCITY	Retrieves the independent movement speed of the turtle
Turtle pen Top
PEN	reports the pen mode
PENDOWN	puts the pen down
PENDOWN?	checks whether the pen is down
PENERASE	the pen draws with the background color
PENREVERSE	the pen inverts all colors
PENUP	the pen moves up
SETPEN	sets the pen characteristics
SETWIDTH	sets the pen width
WIDTH	reports the pen width
Patterns Top
BGPATTERN	reports the background pattern
PATTERN	reports the turtle's pattern
SETBGPATTERN	sets the background pattern
SETPATTERN	sets the turtle pattern
Turtle text Top
FONT	reports the current turtle font
FONTS	outputs a list of all available fonts
SETFONT	sets the font of a turtle
TURTLETEXT (TT)	lets the turtle print a text
Turtle shapes Top
EDITSHAPE	edits a turtle shape
LOADSHAPE	loads a turtle shape
LOCKSHAPE	inhibits the turtle shape from turning
SAVESHAPE	saves a turtle shape
SETSHAPE	sets the turtle shape
SHAPE	outputs a bitmap
STAMP	draw a bitmap
UNLOCKSHAPE	lets a turtle shape rotate according to the turtle's heading
Turtle properties Top
SETTURTLENAME (SETTNAME)	defines a name for a turtle
TURTLENAMES	output s a list of all known turtle names
TURTLES	outputs a list of all turtles
Coordinates Top
DISTANCE	reports the distance between the turtle and a location
GETXY	reports the turtle's position
HIT?	tests whether a dot or an object touches another object
POS	reports the position of the turtle
SETPOS	sets the position of a turtle
SETX	sets the X coordinate of a turtle
SETXY	sets the position of a turtle
SETY	sets the Y coordinate of a turtle
TOWARDS	reports the angle of a position compared to the turtle position
XCOR	reports the X coordinate of the turtle's position
YCOR	reports the Y coordinate of the turtle's position
Dots, filling, and shapes Top
DOT	paints a dot
DOT?	checks whether a dot is present at the turtle's position
DOTCOLOR	reports the color of the dot underneath the turtle
FILL	fills an area
STAMPOVAL	draws an oval
STAMPRECT	draws a rectangle
Customizing the graphics screen Top
EXTENT	reports the coordinate extent of a turtle
FENCE	fences all turtles inside the window
ORIGIN	reports the origin of a turtle's coordinate system
SETEXTENT	sets the coordinate system extent of a turtle
SETORIGIN	sets the origin of the coordinate system of a turtle
WINDOW	removes the boundary for turtle movements
WRAP	lets the turtles wrap inside the window
Color commands Top
BACKGROUND	outputs the background color
BASECOLOR	coerces a color value to a basic Logo color number
COLORS	outputs a list of available color names
PENCOLOR	outputs the pen color
SETBG	sets the background color
SETPC	sets the pen color