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[[Image:Activity-turtleart.png]]

[[Image:Activity-turtleart.png]]

[http://sugarlabs.org/go/Image:TurtleArt-32.xo Version 32 .xo] | [http://git.sugarlabs.org/projects/turtleart Source] | [http://en.flossmanuals.net/turtleart FLOSS Manual] | [http://wiki.laptop.org/go/TurtleArt laptop.org Turtle Art page] | [http://wiki.laptop.org/go/Turtle_Art_student_guide Student Guide] | [[Activities/TAPortfolio Related Project]]

[http://sugarlabs.org/go/Image:TurtleArt-32.xo Version 32 .xo] | [http://git.sugarlabs.org/projects/turtleart Source] | [http://en.flossmanuals.net/turtleart FLOSS Manual] | [http://wiki.laptop.org/go/TurtleArt laptop.org Turtle Art page] | [http://wiki.laptop.org/go/Turtle_Art_student_guide Student Guide] | [[Activities/TAPortfolio Related Project]]

Turtle Art is an activity with a Logo-inspired graphical "turtle" that draws colorful art based on [http://wiki.laptop.org/go/Scratch Scratch]-like snap-together visual programming elements.

Turtle Art is an activity with a Logo-inspired graphical "turtle" that draws colorful art based on [http://wiki.laptop.org/go/Scratch Scratch]-like snap-together visual programming elements.

Turtle Art is intended to be a stepping stone to  the Logo programming language, but there are many restrictions compared to Logo. (Only numeric global variables and stack items are available, no lists or other data-structures. The conditionals and some of the functions only take constants or variables, not expressions. Limited screen real-estate makes building large programs unfeasible.) However, you can export your Turtle Art creations to [Berkeley Logo]. Turtle Art also has a (limited) facility for sensor input, so, for example, you can move the Turtle based upon sound volume or pitch.

Turtle Art is intended to be a stepping stone to  the Logo programming language, but there are many restrictions compared to Logo. (Only numeric global variables and stack items are available, no lists or other data-structures. The conditionals and some of the functions only take constants or variables, not expressions. Limited screen real-estate makes building large programs unfeasible.) However, you can export your Turtle Art creations to [http://www.cs.berkeley.edu/~bh/ Berkeley Logo]. Turtle Art also has a (limited) facility for sensor input, so, for example, you can move the Turtle based upon sound volume or pitch.

Turtle Art was written by Brian Silverman and is maintained by Walter Bender. Arjun Sarwal added the sensor features. Luis Michelena contributed to the "named" action and box blocks..  

Turtle Art was written by Brian Silverman and is maintained by Walter Bender. Arjun Sarwal added the sensor features. Luis Michelena contributed to the "named" action and box blocks..  

You add blocks to your program by clicking on or dragging them from the palette to the main area. You can delete a block by dragging it back onto the palette. Click anywhere on a "stack" of blocks to start executing that stack or by clicking in the Rabbit (fast) or Turtle (slow) buttons on the Project Toolbar.

You add blocks to your program by clicking on or dragging them from the palette to the main area. You can delete a block by dragging it back onto the palette. Click anywhere on a "stack" of blocks to start executing that stack or by clicking in the Rabbit (fast) or Turtle (slow) buttons on the Project Toolbar.

===The Turtle Palette (green)===

===The Turtle Palette (green)===

* 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).  

* 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).  

::Example: 90 means a right angle clockwise, –30 means a 30 degree angle counterclockwise

::Example: 90 means a right angle clockwise, –30 means a 30 degree angle counterclockwise