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Turtle Graphics - Pen and Background Control

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pendown
pd
Description: sets the pen down and the turtle resumes leaving a trail as it moves on the canvas.
penup
pu
Description: sets the pen up and the turtle stops leaving a trail as it moves on the canvas.
penpaint
Description: (default) sets the drawing mode to PAINT.
penerase
Description: sets the drawing mode to ERASE.
Example:
penerase
setpensize 30
fd 100
The result is shown bellow:
setpencolor color
setpc color
setcolor color
Description: sets the stroke color (default: black). The color can be set using standard color codes or html HEX values:
Examples:
setcolor "red
setcolor "4
setcolor "#ff0000
Standard color codes: 0: "black" (
), 1: "blue" (
), 2: "lime" (
), 3: "cyan" (
), 4: "red" (
), 5: "magenta" (
),
6: "yellow" (
), 7: "white" (
), 8: "brown" (
), 9: "tan" (
), 10: "green" (
), 11: "aquamarine" (
), 12: "salmon" (
),
13: "purple" (
), 14: "orange" (
), 15: "gray" (
).
setpensize value
setwidth value
setpw value
Description: sets the pen size to a number of value pixels.
setbgcolor color
Description: sets the background color of the canvas (note: draws a 500x500px square on the graphics canvas). The color can be set using standard color codes or html HEX values:
Example:
setbgcolor "green
setbgcolor "10
setbgcolor "#00ff00
The result is shown bellow:
Standard color codes: 0: "black" (
), 1: "blue" (
), 2: "lime" (
), 3: "cyan" (
), 4: "red" (
), 5: "magenta" (
),
6: "yellow" (
), 7: "white" (
), 8: "brown" (
), 9: "tan" (
), 10: "green" (
), 11: "aquamarine" (
), 12: "salmon" (
),
13: "purple" (
), 14: "orange" (
), 15: "gray" (
).
setbgimg image
Description: sets a background image using the image name.
Some of the names are: "White", "Beach", "Field", "Winter", "Space", "Scene", etc. You can find all the available images using the Background image panel from the editor:
Example:
setbgimg "Winter
The result is shown bellow:

[Index] [<< Previous section: Turtle and Window Control] [Next section: Stroking and Filling Paths >>]
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