Turtle interface.
Defines the interface that any turtle must implement. Note that the standard directions/rotations use Logo semantics: initial heading of zero is 'up', and positive angles rotate the turtle clockwise.
Change the turtle's current pen color.
new pen color
Move the turtle forward a number of steps.
number of steps to move in the current direction; must be positive
Get the image created by this turtle.
string containing image in SVG format
Change the turtle's heading by a number of degrees clockwise.
amount of change in angle, in degrees, with positive being clockwise
Turtle interface.
Defines the interface that any turtle must implement. Note that the standard directions/rotations use Logo semantics: initial heading of zero is 'up', and positive angles rotate the turtle clockwise.