Activities/Turtle Art/Turtle: Difference between revisions
< Activities | Turtle Art
New page: <noinclude>{{Translations | english | español |}}</noinclude> <noinclude>{{ GoogleTrans-en | es =show | bg =show | zh... |
|||
| Line 26: | Line 26: | ||
|- | |- | ||
|[[Image:TA-seth.png]]||Seth (heading)||set the heading of the turtle [0 is towards the top of the screen.] | |[[Image:TA-seth.png]]||Seth (heading)||set the heading of the turtle [0 is towards the top of the screen.] | ||
|- | |||
|[[Image:TA-show.svg]]||Show (media)||draw text, images, or play sounds | |||
|- | |||
|[[Image:TA-scale.svg]]||Scale (media)||Set the scale of images | |||
|- | |||
|[[Image:TA-cpntainer.svg]]||Container||Load a media object from the Journal (plugs into the Show block) | |||
|- | |- | ||
|[[Image:TA-text.png]]||Text (size)||draw text next to the turtle | |[[Image:TA-text.png]]||Text (size)||draw text next to the turtle | ||
Revision as of 18:39, 6 May 2009
The Turtle Palette (green)
examples (1)
descriptions (1)
 |
Clean | clear the screen and reset the turtle to center, pointed up (pen down, bright red) |
 |
Forward (number) | move turtle forward |
 |
Back (number) | move turtle backward |
 |
Left (angle in degrees) | turn turtle counterclockwise |
 |
Right (angle in degrees) | turn turtle clockwise |
 |
Arc (angle in degrees,radius) | move turtle along an arc |
 |
Setyx (xcor, ycor) | move turtle to position (xcor, ycor) [(0, 0) is in the center of the screen.] |
 |
Seth (heading) | set the heading of the turtle [0 is towards the top of the screen.] |
 |
Show (media) | draw text, images, or play sounds |
 |
Scale (media) | Set the scale of images |
| File:TA-cpntainer.svg | Container | Load a media object from the Journal (plugs into the Show block) |
 |
Text (size) | draw text next to the turtle |
 |
Image | draw image (click on the Journal icon to search for an image from the Journal |
 |
X coordinate | holds current x-coordinate value of the turtle (can be used in place of a number block) |
 |
Y coordinate | holds current y-coordinate value of the turtle (can be used in place of a number block) |
 |
Heading | holds current heading value of the turtle (can be used in place of a number block) |
Turtle state values (can plug into a parameter):
- X, Y – Zeros for each are at center screen. Negative values are left and down; positive values are right and up.
- Heading – Zero is pointed up. Heading is in degrees clockwise.
- Angles are degrees from 0 to 360 (for larger values and smaller values all multiples of 360 are subtracted or added to get the value into the range 0..360).
- Examples: 90 means a right angle (90 degrees), clockwise; –30 means a 30-degree angle, counterclockwise