View source for Turtle Art/lang-es

{{ Translation | lang = es | source = Turtle_Art | version = 137334
               | source_display = Turtle_Art
               | version_display = original 
               | diff_display = últimos cambios }}
{{Ongoing Translation}}

{{Olpcboxtop|toptext=[[{{PAGENAME}}|Turtle Art]]}}
{{ OBX activity |[[Image:Turtleart.png]]|bundled<!--|{{{text}}}--> }}
{{ OBX source dev|projects/turtleart-activity}}
{{ OBX xobundle|http://hcs.harvard.edu/~sjklein/TurtleArt.xo|Turtle Art}}
{{ OBX test |<!--[[Tests/Turtle Art|Turtle Art]]|2007-09-18--> }}
{{ OBX devtickets |turtleart-activity}}
{{ OBX pot
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  | pot    = http://translate.fedoraproject.org/POT/olpc-write.master/write.master.pot
  | po-root= http://translate.fedoraproject.org/POT/olpc-write.master/
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{{ OBX team |Brian Silverman}}
<small>see more [[:Category:OBX templates|templates]] or [[OBX proposals|propose new]]</small>
{{Olpcboxbottom}}
{{ Translated text |
[[Turtle Art]] is an activity with a Logo-inspired graphical "turtle" that draws colorful art based on [[Scratch]]-like snap-together visual programming elements.

There are many restrictions compared to [[LOGO]]. The two allowed user-defined procedures can't have parameters. Only two numeric global variables are available, no lists or other data-structures. You can't make user defined functions which return a value. The conditionals and some of the functions only take constants or variables, not expressions. Limited screen real-estate makes building large programs unfeasible.

Help write the '''[[Turtle Art student guide]]!'''
| display = block }}
[[Turtle Art]] es una actividad con un logo inspirado en una "tortuga" que dibuja diseños llenos de color basados en [[Scratch]] mediante elementos de programación visual.

Hay muchas restricciones en comparación con [[LOGO]]. Los dos permitido definido por el usuario, los procedimientos no pueden tener parámetros. Sólo dos variables globales numéricas están disponibles, sin listas ni otras estructuras de datos. No se puede hacer funciones definidas por el usuario que devuelven un valor. Los condicionales y algunas de las funciones sólo tienen constantes o variables, no expresiones. La limitación a la pantalla hacen que la construcción de grandes programas sea inviable.


==Paletas==
Hay cinco paletas de elementos de programa disponibles para el programa de construcción.Tu añades bloques a tu programa arrastrándolos desde la paleta hasta el área central. Tu puedes borrar u bloque arrastrándolo de nuevo a la paleta. Clica en cualquier parte de una "pila" de bloques para empezar a ejecutar esa pila
 You add blocks to your program by dragging them from the palette to the main area. You can delete a block by dragging it back onto the palette. Click anywhere on an existing "stack" of blocks to start executing that stack.

===Turtle (green)===
*Clean - clear the screen and reset the turtle to center, pointed up (pen down, bright red)
*Forward(n)
*Back(n)
*Left(angle)
*Right(angle)
*Arc(angle,radius)
*SetYX(x,y)
*SetH(heading)
*Turtle state values (can plug into a parameter)
**X, Y, heading  (Zeros for each are center screen, pointed up. Heading is degrees clockwise.)
**angles are degrees from 0 to 360 (for larger values and smaller values all multiples of 360 are substracted 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

===Pen (cyan)===
* Pen Up
* Pen Down
* Set Pen Size(n)
* Set Color(n)
* Set Shade(n)
* Fill Screen(color,shade)
* Pen state values (can plug into a parameter)
** Pen size, color, shade
** Colors and shades are represented by a number from 0 through 99. Using a number outside of this range is allowed, and will cause the value to be "wrapped around" (via a modulo, or "clock arithmetic" operation) to the 0 - 99 range.

This image shows the correspondence between the color's representative number and the actual color itself. NOTE: Some of these colors will appear differently on the XO screen than they do on a standard computer screen.  This image is taken from a screenshot on a Macintosh Mini using Firefox to view [http://joviko.net/turtle_art_color.php this webpage].

[[Image:Turtle_art_colors.jpg]]

Here is a photograph of the Browser Activity on the XO displaying the original website for the preceding image. It should be taken with a large grain of salt, since it is a photo of a laptop screen, and is thus a pretty poor way to reliably show colors. To see the colors available in Turtle Art, the original website should be viewed on an actual XO.

[[Image:Pic_of_turtle_art_colors_on_xo.jpg]]

===Numbers (violet)===
*Values (can plug into a parameter)
**Number (constant)
**Infix operators(left,right)
*** +, -, *, /, mod
**Random(min, max)  (constants or boxes only)
*Conditions (oval, plugs into an If block)
** <, >, = (takes two constants or boxes)
** and, or, not (takes other conditions)
*Print(n) - Debugging output. When in full screen mode ('''Alt-Enter'''), show a numeric value at the bottom of the screen.

===Flow (orange)===
*Wait(n)
*Forever[stack] (no continuation)
*Repeat(n)[stack]
*If(condition)[then]
*If(condition)[then][else]
*Stop (no continuation)
*Connectors:
**jog right
**jog down
===My blocks (yellow)===
*Stack1,2 - a rhombus which tops a stack, equivalent to a procedure definition (but without parameters).
*"Stack1,2" - blocks for invoking a stack (no parameters)
*Store in "box" 1,2(n) - blocks for setting a variable
*"Box1,2" (plugs into a parameter)
**''A glaring limitation: you cannot rename these objects. Thus, you are limited to two procedures and two global variables! Madness! --[[User:IanOsgood|IanOsgood]] 13:59, 30 December 2007 (EST)''

==Program control icons==
There are also some icons at the bottom right for user control:
* Show/Hide the current program
* Eraser - clear the screen and reset the turtle (same as the Clean block)
* Stop (for infinite loops)

==Project tab==
The Project tab at the top left gives access to sample programs shipped with the activity.

==See also==
*[[Etoys]] project TurtleGeometry
*[[Python]] projects [[PyoLogo]] and [[PyLogo]]
* [[Measure#Sensor_Input_into_Turtle_Art|Sensor input]] in Turtle Art 
* [http://www.ceibal.edu.uy/portal/recursos/educativos/tortugarte.htm Tutorial de TortugArte] Spanish
{{-}}

==Gallery==
<gallery>
Image:Turtle0.png|[[Turtle Art]] startup screen
Image:Turtle1.png|Clicking on the Blocks menu brings the basic tool set into view
Image:Turtle2.png|Drag blocks from the menu
Image:Turtle3.png|Click on the top block of a stack to execute the stack
Image:Turtle4.png|Other blocks can be found under the tabs
Image:Turtle5.png|
Image:Turtle6.png|Example projects are found on the Projects menu on the upper right of the screen
Image:542-turtleart-2.png
Image:Turtle-recursion-1.jpg|A recursive algorithm (difficult without parameters)
Image:Screenshot.png|Simple fractal recursion example
Image:TA-Sierpinski.png|Sierpinski Triangle recursion example
Image:Turtle_art_full_spectrum.png|A screen dump of Turtle Art displaying all of the colors and shades that are available within Turtle Art.
Image:Turtle_art_full_spectrum_code.png|The algorithm created by "catmoran" for displaying all of the colors and shades in Turtle Art.
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[[Category:Games]]
[[Category:Developers]]