BSCBCANOTES: Fundamental Turtle Attributes and Behavior

Absolute Positioning

The position method returns a turtle’s current position.
For newly created turtles, this returns the tuple (0, 0).
A turtle’s position can be changed using absolute positioning by moving the turtle to a specific (x, y) coordinate location by use of the setposition method.

A turtle’s position can be changed using relative positioning by use of methods setheading, left, right, and forward

When a turtle is newly created, its initial heading is to the right, at 0 degrees.
- A turtle with a heading of 90 degrees moves upwards.
- A heading of 180 degrees corresponds to movement to the left.
- A heading of 270 degrees corresponds to movement downwards.
A turtle’s heading can be changed by turning the turtle a given number of degrees left, left(90), or right, right(90).
The forward method moves a turtle in the direction that it is currently heading
A turtle’s heading can also be set to a specific heading by use of method setheading: the_turtle.set heading(90).
In addition, method heading can be used to determine a turtle’s current heading.

Pen attributes in turtle graphics control the drawing capabilities of a turtle object.

Pen Up and Pen Down:

Determines whether the pen is up or down, controlled by penup() and pendown() methods.
penup(): Lifts the pen, allowing the turtle to move without drawing lines.
pendown(): Lowers the pen, enabling the turtle to draw lines as it moves.

Pen Size:

The width of the lines drawn when the pen is down is determined by the pen size. The pen size is controlled using the pensize() method.
The size is specified in pixels and can be adjusted according to requirements.
For instance, the_turtle.pensize(5) sets the pen size to 5 pixels.

Pen Color:

The color of the lines drawn by the turtle can be selected using the pencolor() method.
The colors can be specified using common color names like 'white', 'red', 'blue', 'green', 'yellow', 'gray', and 'black'.
Alternatively, colors can be specified in RGB (red/green/blue) component values. The range is typically 0–255.
To utilize the full spectrum of colors, set the color mode attribute of the turtle window using turtle.colormode(255).
For example, the_turtle.pencolor(238, 130, 238) sets the pen color to violet using RGB values.

BSCBCANOTES