Overview

The language used for turtle graphics is a simplified Turtle Graphics Notation.

Use a turtle to draw on a 280 x 200 pixel canvas. You can save your drawings using the "Download your drawing" button.

Commands

CLEARSCREEN

Erases the drawing (like shaking your etch-a-sketch).

PENUP

Lift up the pen so that when the turtle moves, it won't draw a line.

PENDOWN

Set the pen down so that when the turtle moves, it willl draw a line. This is the default.

SHOWTURTLE

Shows the current turtle position as a charming little triangle. This is the default.

HIDETURTLE

Hides the charming little triangle so you can see your picture in all it's artistic glory.

FORWARD [distance]

Moves the turtle forward by the [distance] specified.

BACK [distance]

Moves the turtle backward by the [distance] specified.

LEFT [degrees]

Moves the turtle left by the [degrees] specified.

RIGHT [degrees]

Moves the turtle right by the [degrees] specified.

REPEAT [number]

Repeat the following commands the [number] of times specified.

TO [argument list]

Currently this doesn't work, but one day it will allow you to write new commands.

Example programs

Triangle

Use the REPEAT command to draw a triangle.

 REPEAT 3
  FORWARD 50
  LEFT 120