penUp
Category:Turtle
Just like you sometimes lift your pen when drawing, the turtle pen can be lifted using penUp so the turtle will not draw a line as it moves.
Examples
Basic Example
// Move the turtle up from the turtle starting postion at the center of the screen without drawing a line.
penUp();
moveForward();
Example: Dotted Line
Use penUp and penDown to have the turtle draw a thick, dotted line.
// Use penUp and penDown to have the turtle draw a thick, dotted line.
penWidth(3);
penDown();
moveForward();
penUp();
moveForward();
penDown();
moveForward();
penUp();
moveForward();
penDown();
moveForward();
Example: Pair of Eyes
Draw a picture that has disconnected parts (a pair of eyes) using penUp to move between parts.
// Draw a picture that has disconnected parts (a pair of eyes) using penUp to move between parts.
hide();
// first eye
penDown();
arcRight(360, 25);
penUp();
move(25, 10);
dot(10);
move(-100, -10);
// second eye
penDown();
arcRight(360, 25);
penUp();
move(25, 10);
dot(10);
Syntax
penUp();
Returns
No return value. Modifies turtle drawing only.
Tips
- penDown() is often used with penUp. The default starting configuration for the turtle is with the pen down.
- dot() is not effected by penUp.
- Turtle drawing commands are not effected by the show() and hide() commands, which control if the turtle icon is displayed or not.
- If you are not seeing the turtle's movement, slow the program execution down by adjusting the tortoise/hare slider bar in the Debug Console or by using the speed() command.
Found a bug in the documentation? Let us know at support@code.org.
