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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>Turtle Graphics</title>
<meta charset="utf-8">
<link type="text/css" rel="stylesheet" href="turtle.css" />
<link href="https://fonts.googleapis.com/css?family=Poppins|Roboto" rel="stylesheet">
</head>
<!--body onresize="resizeColumns();"> -->
<body id="body">
<a href="javascript:void(0)" id="dragbarleft"></a>
<span class="help_text" id="dragbarleft_help_text">
<p>
Click and drag on the drag bar to resize columns.
</p>
</span>
<a href="javascript:void(0)" id="dragbarright"></a>
<span class="help_text" id="dragbarright_help_text">
<p>
Click and drag on the drag bar to resize columns.
</p>
</span>
<div id="wrap">
<div id="container">
<div id="leftcolumncontainer">
<div id="leftcolumn">
<div id="referencewrapper">
<h4 id="referenceTitle">
Language Reference
<!--
<button id="referenceClose">
<svg class="fi" viewBox="0 0 64 64">
<line x1="2" y1="2" x2="62" y2="62" style="stroke:rgb(0,0,0);stroke-width:8" />
<line x1="62" y1="2" x2="2" y2="62" style="stroke:rgb(0,0,0);stroke-width:8" />
</svg>
</button>
-->
<!--
add a menu .. sort of a table of contents to jump to contents
<a href="#color">jump to color</a>
also roll in the tutorial stuff
-->
</h4>
<div id="reference">
<ul>
<li>
forward(<em>distance</em>) | fd(<em>distance</em>)
<p>
Move the turtle forward <em>distance</em> pixels.
</p>
<p>
Example: <code>forward (10)</code>
</p>
</li>
<li>
backward(<em>distance</em>) | back(<em>distance</em>) | bk(<em>distance</em>)
<p>
Move the turtle backward <em>distance</em> pixels, but leave
it pointing forward.
</p>
<p>
Example: <code>backward (10)</code>
</p>
</li>
<li>
right(<em>angle</em>) | rt(<em>angle</em>) | turn(<em>angle</em>)
<p>
Turn the turtle to the right <em>angle</em> degrees.
</p>
<p>
Example: <code>right (90)</code>
</p>
</li>
<li>
left(<em>angle</em>)
<p>
Turn the turtle to the left <em>angle</em> degrees.
</p>
<p>
Example: <code>left (90)</code>
</p>
</li>
<li>
penup() | penUp() | up() | pu()
<p>
Lift the pen in the turtle so that it does not leave a mark as
it moves.
</p>
<p>
Example: <code>penUp()</code>
</p>
</li>
<li>
pendown() | penDown() | down() | pd()
<p>
Lower the pen in the turtle so that it leaves a mark as
it moves.
</p>
<p>
Example: <code>penDown()</code>
</p>
</li>
<li>
hideturtle() | hideTurtle() | ht()
<p>
Hide the turtle. It can still draw, but it isn't shown.
</p>
<p>
Example: <code>hideTurtle()</code>
</p>
</li>
<li>
showturtle() | showTurtle() | st()
<p>
Show the turtle.
</p>
<p>
Example: <code>showTurtle()</code>
</p>
</li>
<li>
home()
<p>
Move the turtle to its home in the center
(x=0, y=0) and pointing toward the top (angle=0).
</p>
<p>
Example: <code>home()</code>
</p>
</li>
<li>
clear()
<p>
Clear the graphics area, but leave the turtle where it is.
</p>
<p>
Example: <code>clear()</code>
</p>
</li>
<li>
reset()
<p>
Clear the graphics area and move the turtle to its home in the center
(x=0, y=0) and pointing toward the top (angle=0).
</p>
<p>
Example: <code>reset()</code>
</p>
</li>
<li>
goto(<em>x</em>,<em>y</em>) | setposition(<em>x</em>,<em>y</em>) | setPosition(<em>x</em>,<em>y</em>) | setpos(<em>x</em>,<em>y</em>) | setPos(<em>x</em>,<em>y</em>)
<p>
Move the turtle to the coordinates <em>x</em> pixels to the
right of the center of the drawing area (or <em>-x</em> pixels to the
left of the center) and <em>y</em> pixels above the center of the drawing
area (or <em>-y</em> to below the center). This does not draw on the way.
</p>
<p>
Example: <code>goto (20,10)</code>
</p>
</li>
<li>
setx(<em>x</em>) | setX(<em>x</em>)
<p>
Move the turtle horizontally to the coordinates <em>x</em> pixels to the
right of the center of the drawing area (or <em>-x</em> pixels to the
left of the center).
</p>
<p>
Example: <code>setx (0)</code>
</p>
</li>
<li>
sety(<em>y</em>) | setY(<em>y</em>)
<p>
Move the turtle vertically to the coordinates <em>y</em> pixels above
the center of the drawing area (or <em>-y</em> to below the center).
This does not draw on the way.
</p>
<p>
Example: <code>sety (0)</code>
</p>
</li>
<li>
angle(<em>angle</em>) | setheading(<em>angle</em>) | seth(<em>angle</em>)
<p>
Turn the turtle to to the absolute <em>angle</em> relative to top
of the graphic area. <em>0</em> is the top, <em>0</em> is toward the top,
<em>90</em> is toward the right, <em>180</em> is toward the bottom, and
<em>270</em> <em>-90</em> is toward the left.
</p>
<p>
Example: <code>angle (90)</code>
</p>
</li>
<li>
width(<em>width</em>) | pensize(<em>width</em>) | penSize(<em>width</em>) | penwidth(<em>width</em>) | penWidth(<em>width</em>) |
<p>
Change the <em>width</em> of the turtle pen (in pixels).
</p>
<p>
Example: <code>width(5);</code>
</p>
</li>
<li>
<!--
<a name="color"></a>
-->
color(<em>colorcode</em>)
<p>
Change the color of the turtle pen. The <em>colorcode</em> may be a number
from 0 to 15 representing the standard turtle graphics colors.
<br/>
<button id="black">0 black</button>
<button id="blue">1 blue</button>
<button id="lime">2 lime</button>
<button id="cyan">3 cyan</button>
<button id="red">4 red</button>
<button id="magenta">5 magenta</button>
<button id="yellow">6 yellow</button>
<button id="white">7 white</button>
<button id="brown">8 brown</button>
<button id="tan">9 tan</button>
<button id="green">10 green</button>
<button id="aqua">11 aqua</button>
<button id="salmon">12 salmon</button>
<button id="purple">13 purple</button>
<button id="orange">14 orange</button>
<button id="gray">15 gray</button>
</p>
<p>
The <em>colorcode</em> may also be a quoted string with any acceptable CSS color code as in:
</p>
<ul>
<li>
"<em>colorName</em>"
where <em>colorName</em> is any of the named CSS colors.
</li>
<li>
"#<em>RRGGBB</em>"
where <em>RR</em>, <em>GG</em>, and <em>BB</em> is the hexidecimal
amount of red, green and blue respectively.
</li>
<li>
"rgb(<em>RR</em>, <em>GG</em>, <em>BB</em>)"
where <em>RR</em>, <em>GG</em>, and <em>BB</em> is the decimal
amount of red, green and blue respectively.
Each value is between 0 and 255.
</li>
<li>
"rgba(<em>RR</em>, <em>GG</em>, <em>BB</em>, <em>AA</em>)"
where <em>RR</em>, <em>GG</em>, and <em>BB</em> is the decimal
amount of red, green and blue respectively and
<em>AA</em> is the alpha channel for transparancy between 1.0 for
opaque and 0.0 for totally transparent.
</li>
<li>
"hsl(<em>hue</em>, <em>saturation%</em>, <em>lightness%</em>, <em>AA</em>)"
where the values are:
<em>hue</em> is position on the color wheel (0 to 360),
<em>saturation%</em> is the saturation percentage, and
<em>lightness%</em> is the lightness percentage.
</li>
<li>
"hsl(<em>hue</em>, <em>saturation%</em>, <em>lightness%</em>, <em>AA</em>)"
where the values are:
<em>hue</em> is position on the color wheel (0 to 360),
<em>saturation%</em> is the saturation percentage,
<em>lightness%</em> is the lightness percentage, and
<em>AA</em> is the alpha channel for transparancy between
1.0 for opaque and 0.0 for totally transparent.
</li>
</ul>
<p>
Example: <code>color(1)</code>
</p>
<p>
Example: <code>color("red")</code>
</p>
<p>
Example: <code>color("#ff0000")</code>
</p>
<p>
Example: <code>color("rbg(255,0,0)")</code>
</p>
<p>
Example: <code>color("rbg(255,0,0, .5)")</code>
</p>
<p>
Example: <code>color("hsl( 0, 100, 100")</code>
</p>
<p>
Example: <code>color("hsl( 0, 100, 100, .4")</code>
</p>
</li>
<li>
write(<em>string</em>)
<p>
Places the text in the <em>string</em>along the projected path of
the turtle. The <em>string</em> may be a set of characters enclosed by
single or double quotation marks. The <em>string</em> may also be a value
returned by a function.
</p>
<p>
Example: <code>write("Hello World")</code>
</p>
</li>
<li>
setfont(<em>fontName</em>) | setFont(<em>fontName</em>)
<p>
Set the characteristics (<em>style</em>, <em>variant</em>, <em>weight</em>,
<em>size</em>, and <em>font-family</em> desired for the font for subsequent writes.
</p>
<p>
Example: <code>setfont("italic small-caps bold 12px courier")</code>
</p>
</li>
<li>
curveright (<em>radius</em>[,<em>extent</em>]) | curveRight (<em>radius</em>[,<em>extent</em>])
<p>
Draw a circular curve from the turtle's postion. The
center of the curve is to the right of the turtle at a perpendicular
distance of <em>radius</em> pixels. The curve is a full circle unless
<em>extent</em> is provided to limit the number of degrees of arc.
</p>
<p>
Example: <code>curveRight(30)</code>
</p>
<p>
Example: <code>curveRight(10,45)</code>
</p>
</li>
<li>
curveleft (<em>radius</em>[,<em>extent</em>]) | curveLeft (<em>radius</em>[,<em>extent</em>])
<p>
Draw a circular curve from the turtle's postion. The
center of the curve is to the left of the turtle at a perpendicular
distance of <em>radius</em> pixels. The curve is a full circle unless
<em>extent</em> is provided to limit the number of degrees of arc.
</p>
<p>
Example: <code>curveLeft(20)</code>
</p>
<p>
Example: <code>curveLeft(10,45)</code>
</p>
</li>
<li>
circle (<em>radius</em>[[,(<em>extent</em>],(<em>CCW</em>])
<p>
Draw a circle or arc centered on the turtle's postion. A full circle
is drawn unless <em>extent</em> is provided to limit the number of
degrees of arc. The arc is drawn clockwise unless a boolean <em>CCW</em>
is supplied and has a value of <em>false</em>.
</p>
<p>
Example: <code>circle(10)</code>
</p>
<p>
Example: <code>circle(20,90)</code>
</p>
<p>
Example: <code>circle(30,-90,false)</code>
</p>
</li>
<li>
dot ([<em>radius</em>])
<p>
// radius in pixels (if none, max of pensize+4, 2*pensize)
Draw a filled circle centered on the turtle's postion.
The circle is drawn with a radius of <em>radius</em>) pixels. If
<em>radius</em>) is not specified, it defaults to the larger of
width plus 4 or twice the pensize).
</p>
<p>
Example: <code>dot()</code>
</p>
<p>
Example: <code>dot(10)</code>
</p>
</li>
<li>
beginshape() | beginShape()
<p>
Marks the begining of a shape to be filled. The shape consists of a
set of line segments (forward, backward, right, left, curveright, curveleft).
The set should be continuous and begin and end at the same point.
</p>
<p>
Example: <code>beginShape()</code>
</p>
</li>
<li>
fillShape([styl])
<p>
Fills the shape begun with the last beginShape() directive.
The shape is filled with <em>styl</em>, which may be a logo color number,
a normal HTML color definition (see color above), a gradient or
a pattern. This defaults to the turtle color.
</p>
<p>
Example: <code>fillShape("blue")</code>
</p>
</li>
<li>
n = random([<em>low,</em>]<em>high</em>)
<p>
Pick a random number between <em>low</em> and <em>high</em> -1.
If only one value <em>high</em> is provided, pick a number between 0 and
<em>high</em> -1.
</p>
<p>
Example: <code>write(random(1,7)+ " ")</code>
</p>
<p>
Example: <code>write(random(6)+ " ")</code>
</p>
</li>
<li>
repeat(<em>n</em>, <em>action</em>)
<p>
Allows a function <em>action</em> or group of actions to be repeated
<em>n</em> times.
</p>
<p>
Example: <code>repeat (4, function () {forward(10);right(90)})</code>
</p>
<p>
Example: <code>function el () {forward(10);right(90)}; repeat (4, el)</code>
</p>
</li>
<li>
wrap(<em>bool</em>)
<p>
Turns wrapping on and off at the edges of the graphic area by setting it
<em>true</em> or <em>false</em> respecitively.
</p>
<p>
Example: <code>wrap(true)</code>
</p>
<p>
Example: <code>wrap(false)</code>
</p>
</li>
<li>
animate(<em>action</em>,<em>ms</em>)
<p>
Evalutes <em>action</em> every <em>ms</em> milliseconds.
</p>
<p>
Example: <code>animate ("forward(10)",100)</code>
</p>
<p>
Example: <code>animate ("forward(100);right(90);",100)</code>
</p>
<p>
Example: <code>function el () {forward(100);right(90)}; animate (el,100)</code>
</p>
</li>
<li>
delay(<em>action</em>,<em>ms</em>)
<p>
Evalutes <em>action</em> after a delay of <em>ms</em> milliseconds.
</p>
<p>
Example: <code>delay ("forward(10)",1000)</code>
</p>
<p>
Example: <code>delay ("forward(100);right(90);",1000)</code>
</p>
<p>
Example: <code>function el() {forward(100);right(90); delay (el,100)};el()</code>
</p>
</li>
<li>
redrawOnMove(<em>bool</em>)
<p>
Turn redrawing on or off by specifying the <em>bool</em> as
<em>true</em> or <em>false</em>.
<!-- Not sure that this is useful. -->
</p>
<p>
Example: <code>redrawOnMove(true)</code>
</p>
<p>
Example: <code>redrawOnMove(false)</code>
</p>
</li>
<li>
draw()
<p>
Draw the turtle and the current image.
<!-- Not sure that this is useful. -->
</p>
<p>
Example: <code>draw()</code>
</p>
</li>
<li>
n = minx() | n = minX()
<p>
Return the minimum value of x in pixels
</p>
<p>
Example: <code>write(minX())</code>
</p>
</li>
<li>
n = maxx() | n = maxX()
<p>
Return the maximum value of x in pixels
</p>
<p>
Example: <code>write(maxX())</code>
</p>
</li>
<li>
n = miny() | n = minY()
<p>
Return the minimum value of Y in pixels
</p>
<p>
Example: <code>write(minY())</code>
</p>
</li>
<li>
n = maxy() | n = maxY()
<p>
Return the maximum value of Y in pixels
</p>
<p>
Example: <code>write(maxY())</code>
</p>
</li>
</ul>
</div> <!-- reference -->
</div> <!-- referencewrapper -->
</div> <!-- leftcolumn -->
</div> <!-- leftcolumncontainer -->
<span class='help_text' id='reference_help_text'>
<p>
The language reference lists the available functions for turtle graphics.
</p>
<p>
Parameters are <em>italicized</em> included within parentheses '(' and ')' characters.
Optional parameters and separating
commas are enclosed withing square bracket '[' and ']' characters
(the square brackets should not be entered).
</p>
<p>
Alternative forms of
the functions are separated with the pipe '|' character (e.g.,
cat()|dog() means cat() or dog()).
</p>
<p>
Examples are shown in <code>bold typewriter font</code>. Each example may be clicked
to immediately execute it to see what it does.
</p>
</span>
<div id="midcolumncontainer">
<div id="midcolumn">
<h4 id=canvastitle>Canvas
<button id="infoButton">i</button>
<span class='help_text' id='infoButton_help_text'>
<p>
The <strong>i</strong> button toggles the rollover help text.
</p>
</span>
</h4>
<!--
<canvas2 id="turtlecanvas2" width="300" height="300"></canvas2>
<canvas2 id="imagecanvas2" width="300" height="300" style="display:none"></canvas2>
-->
<div id="canvaswrapper">
<canvas id="turtlecanvas"></canvas>
<canvas id="imagecanvas"></canvas>
<span class='help_text' id='turtlecanvas_help_text'>
<p>
The canvas is where the turtle graphics are drawn.
The turtle is the green triangle pointing in its direction of travel.
</p>
</span>
</div> <!-- canvaswrapper -->
<div id=commandwrapper> <!-- commandwrapper -->
<label id="commandLabel" for=#command>Command</label>
<input type="text" id="command" />
<span class='help_text' id='command_help_text'>
<p>
The Command area is where text can be entered and executed by pressing
the ENTER (Return) key.
</p>
</span>
<button id="resetButton">Reset</button>
<span class='help_text' id='resetButton_help_text'>
<p>
The <strong>Reset</strong> button clears the canvas and moves the turtle to its start
position.
</p>
</span>
<button id="runButton">Run Demo</button>
<span class='help_text' id='runButton_help_text'>
<p
The <strong>Run Demo</strong> button runs the function in the <strong>Code</strong> area named
demo().
</p>
</span>
<button id="stopButton">Stop</button>
<span class='help_text' id='stopButton_help_text'>
<p>
The <strong>Stop</strong> button stops animation.
</p>
</span>
<a id="saveCanvasButton">
<svg version="1.1" id="Capa_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
viewBox="0 0 333.668 333.668" style="enable-background:new 0 0 333.668 333.668;" xml:space="preserve">
<g>
<path d="M295.101,298.649H38.561C17.295,298.649,0,281.354,0,260.088V103.703c0-21.266,17.295-38.561,38.561-38.561h52.347
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c21.266,0,38.561,17.295,38.561,38.561v156.384C333.662,281.354,316.361,298.649,295.101,298.649z M38.561,77.996
c-14.178,0-25.707,11.53-25.707,25.707v156.384c0,14.178,11.53,25.707,25.707,25.707h256.54c14.178,0,25.707-11.53,25.707-25.707
V103.703c0-14.178-11.53-25.707-25.707-25.707h-62.327l-7.037-25.097c-0.649-2.918-3.278-5.032-6.26-5.032H114.179
c-3.027,0-5.598,2.069-6.26,5.039l-7.429,25.09H38.561z M166.841,259.798c-44.981,0-81.576-36.588-81.576-81.563
c0-44.981,36.594-81.569,81.576-81.569c44.969,0,81.557,36.594,81.557,81.569C248.397,223.204,211.809,259.798,166.841,259.798z
M166.841,109.513c-37.893,0-68.722,30.823-68.722,68.716s30.83,68.709,68.722,68.709c37.886,0,68.703-30.823,68.703-68.709
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c0,6.549,5.302,11.857,11.858,11.857c6.549,0,11.851-5.309,11.851-11.857C298.649,107.167,293.346,101.852,286.804,101.852z"/>
</svg>
</a>
<span class='help_text' id='saveCanvasButton_help_text'>
<p>
The <strong>Save Canvas</strong> button takes a snap shot of the canvas and saves in the browser download file with the name TurtleGraphic.png.
</p>
</span>
<button id="saveSVG">
Save SVG
</button>
<span class='help_text' id='saveCanvasButton_help_text'>
<p>
The <strong>Save Canvas</strong> button takes a snap shot of the canvas and saves in the browser download file with the name TurtleGraphic.png.
</p>
</span>
</div> <!-- commandwrapper -->
</div> <!-- midcolumn -->
</div> <!-- midcolumncontainer -->
<div id="rightcolumncontainer">
<div id="rightcolumn">
<div id="examplewrapper">
<h4>Code Area
<!-- need to change name Examples to Code Area -->
<!-- The select options are populated with a tool, DO NOT EDIT. -->
<select id=examples>
<option selected value=example>Examples</option>
<option value="arc_test">Arc and Curve Test</option>
<option value="basket_weave_tessellation">Basket Weave Tessellation</option>
<option value="bounce">Bouncing Rectangles</option>
<option value="brick_tessellation">Brick Tessellation</option>
<option value="cafe_wall_illusion">Cafe Wall Illusion</option>
<option value="circle_eye2">Circle Eye2</option>
<option value="circle_eye">Circle Eye</option>
<option value="clock_BCD">Clock, BCD</option>
<option value="clock_digital">Clock, Digital</option>
<option value="clock">Clock, Analog</option>
<option value="collidescape">Collidescape (tm)</option>
<option value="color_changing_dots">Color Changing Dots</option>
<option value="compass_rose2">Compass Rose 2</option>
<option value="compass_rose">Compass Rose</option>
<option value="compass_rose_quilt">Compass Rose Quilt</option>
<option value="connected_points">Connected Points</option>
<option value="conway_fractal">Conway Fractal</option>
<option value="conway_pinwheel">Conway Pinwheel</option>
<option value="coordinates">Coordinates</option>
<option value="dividing_circle">Dividing a Circle</option>
<option value="dodecahedron_graph">Dodecahedron Graph</option>
<option value="dragon_curve">Dragon Curve</option>
<option value="example">Example</option>
<option value="eye_simulator">Eye Simulator</option>
<option value="fibinoucci">Fibanochi sequence</option>
<option value="gosper_curve">Gosper Curve</option>
<option value="graphitti">Graphitti</option>
<option value="heart">Heart</option>
<option value="herring_bone_tessellation">Herring Bone Tessellation</option>
<option value="hexapentakis_truncated_icosahedron_asymmetric_full">Hexapentakis-Truncated-Icosahedron-Asymmetric full</option>
<option value="hexapentakis_truncated_icosahedron_symmetric_full">Hexapentakis-Truncated-Icosahedron Symmetric full</option>
<option value="hexapentakis_truncated_icosahedron_symmetric_half">Hexapentakis Truncated Icosahedron half</option>
<option value="hex_tessellation">Hexagon Tessellation</option>
<option value="hilbert_curve">Hilbert Curve</option>
<option value="hirschhorn_tiles">Hircshhorn Tiles</option>
<option value="home_plate_tessellation">Home Plate Tessellation</option>
<option value="icosahedron_graph">Icosahedron Graph</option>
<option value="intersection_simulator">Intersection Simulator</option>
<option value="jumping_jack">Jumping Jack</option>
<option value="koch_line">Koch Lines</option>
<option value="koch_snowflake2">Koch Snowflake 2</option>
<option value="koch_snowflake">Koch Snowflakes</option>
<option value="koch_triangles_stacked">Koch Snowflakes, Stacked</option>
<option value="life">Life</option>
<option value="miura_origami">Miura Origami</option>
<option value="mountain_tessellation">Mountain Tessellation</option>
<option value="naifeh_ajlun">Naifah Ajlun</option>
<option value="naifeh_cyrene">Naifah Cyrene</option>
<option value="naifeh_jeresh">Naifah Jeresh</option>
<option value="naifeh_mamluk">Naifeh Mamluk</option>
<option value="naifeh_mizen6">Naifeh Mizen Six</option>
<option value="naifeh_mizen">Naifeh Mizen Simple</option>
<option value="naifeh_petra">Naifeh Petra</option>
<option value="naifeh_saida_inverse">Naifeh Saida Inverse</option>
<option value="naifeh_saida">Naifeh Saida</option>
<option value="nested_hexagons">Nested Hexagons</option>
<option value="nested_squares">Nested Squares</option>
<option value="pentahex">Pentahex</option>
<option value="polygon">Polygon</option>
<option value="random_stars">Random Stars</option>
<option value="random_stick_men">Random Stick Men</option>
<option value="rhombic_star_tessellation">Rhombic Star Tessellation</option>
<option value="rice_penta_tessellation_1">Rice Penta Tessellation 1</option>
<option value="serendipitous">Serendipitous Circles</option>
<option value="sierpinski_curve">Sierpinski Curve</option>
<option value="sierpinski_triangle">Sierpinski Triangle</option>
<option value="simple_story">Simple Story</option>
<option value="sliding_block">Sliding Block Puzzle</option>
<option value="snowman">Snowman</option>
<option value="snub_icosidodecahedron">Snub Icosidodecahedron Half</option>
<option value="spinning_squares">Spinning Squares</option>
<option value="spiral">Spiral</option>
<option value="square_lines">Square Lines</option>
<option value="square_series">Square Series</option>
<option value="square_tessellation">Square Tessellation</option>
<option value="squiggle">Squiggle</option>
<option value="stamps">Stamps</option>
<option value="star_burst">Starburst</option>
<option value="star">Star</option>
<option value="stars_and_rhombuses">Stars and Rhombuses</option>
<option value="tree">Tree Symmetrical</option>
<option value="triangle_tessellation">Triangle Tesselation</option>
<option value="triangle_tunnel">Triangle Tunnel</option>
<option value="two_square_tessellation">Two Square Tessellation</option>
<option value="US_flag">US Flag</option>
<option value="wang_tiles">Wang Tiles</option>
<option value="waves">Waves</option>
</select>
<!-- The above select options are populated with a tool, DO NOT EDIT. -->
<span class='left_help_text' id='examples_help_text'>
<p>
The <strong>Examples select</strong> is used to load an example into the
<strong>defintions</strong> area.
</p>
<p>
The example can be run with the <strong>Run Demo</strong> button.
</p>
</span>
</h4>
<textarea id="codeArea">
/* Define helper functions here
or write your own functions
For example: */
function square(side) {
repeat(4, function () {
forward(side);
right(90);
});
}
function demo() {
hideTurtle();
color("blue");
var s = 100;
while (s > 0) {
square(s);
right(36);
s = s - 10;
}
}
</textarea> <!-- codeArea -->
<span class='left_help_text' id='codeArea_help_text'>
<p>
The code area is for the entry of multi-line programs, helper
functions and examples.
</p>
<p>
The code can be examined or modified as desired.
</p>
<p>
Individual functions may be executed by typing their name and
partheses into the
<strong>Command</strong> line (for example: <code>demo()</code>) and pressing ENTER or RETURN.
</p>
</span>
<div id=codeButtons> <!-- codebuttons -->
<input type="file" id="uploadFile" accept=".js,.txt"/>
<button id="uploadButton">
<svg version="1.1" id="Capa_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
viewBox="0 0 60.903 60.903" style="enable-background:new 0 0 60.903 60.903;" xml:space="preserve">
<g>
<path d="M49.561,16.464H39.45v6h10.111c3.008,0,5.341,1.535,5.341,2.857v26.607c0,1.321-2.333,2.858-5.341,2.858H11.34
c-3.007,0-5.34-1.537-5.34-2.858V25.324c0-1.322,2.333-2.858,5.34-2.858h10.11v-6H11.34C4.981,16.466,0,20.357,0,25.324v26.605
c0,4.968,4.981,8.857,11.34,8.857h38.223c6.357,0,11.34-3.891,11.34-8.857V25.324C60.902,20.355,55.921,16.464,49.561,16.464z"/>
<path d="M39.529,29.004c-0.768,0-1.535,0.294-2.121,0.88l-3.756,3.755V20.612v-6V3.117c0-1.656-1.343-3-3-3s-3,1.344-3,3v11.494v6
v13.23l-3.959-3.958c-0.586-0.586-1.354-0.88-2.121-0.88s-1.535,0.294-2.121,0.88c-1.172,1.17-1.172,3.07,0,4.241l8.957,8.957
c0.586,0.586,1.354,0.877,2.12,0.877c0.008,0,0.016,0,0.023,0s0.015,0,0.022,0c0.768,0,1.534-0.291,2.12-0.877l8.957-8.957
c1.172-1.171,1.172-3.071,0-4.241C41.064,29.298,40.298,29.004,39.529,29.004z"/>
</svg>
</button>
<span class='left_help_text' id='uploadButton_help_text'>
<p>
The <strong>Upload</strong> button opens a dialog to select a file
to load into the code text area.
</p>
</span>
<button id="downloadButton">
<svg version="1.1" id="Capa_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
viewBox="0 0 67.671 67.671" style="enable-background:new 0 0 67.671 67.671;" xml:space="preserve">
<g>
<path d="M52.946,23.348H42.834v6h10.112c3.007,0,5.34,1.536,5.34,2.858v26.606c0,1.322-2.333,2.858-5.34,2.858H14.724
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<path d="M24.957,14.955c0.768,0,1.535-0.293,2.121-0.879l3.756-3.756v13.028v6v11.494c0,1.657,1.343,3,3,3s3-1.343,3-3V29.348v-6
V10.117l3.959,3.959c0.586,0.586,1.354,0.879,2.121,0.879s1.535-0.293,2.121-0.879c1.172-1.171,1.172-3.071,0-4.242l-8.957-8.957
C35.492,0.291,34.725,0,33.958,0c-0.008,0-0.015,0-0.023,0s-0.015,0-0.023,0c-0.767,0-1.534,0.291-2.12,0.877l-8.957,8.957
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</g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g>
</svg>
</button>
<span class='left_help_text' id='downloadButton_help_text'>
<p>
The <strong>Download</strong> button downloads the code text
area to the directory designated for downloads by the browser.
</p>
</span>
<input type="text" id="downloadFilename" placeholder="TurtleGraphic" />.js
<span class='left_help_text' id='downloadFilename_help_text'>
<p>
The <strong>Download Filename</strong> text area holds the filename
used when downloading the code text area to the download directory.
</p>
</span>
<!--
<button id="saveButton">Download</button>
<span class='left_help_text' id='saveButton_help_text'>
<p>
The <strong>Save</strong> button downloads the code in the code area to the filename in the download directory designated by the browser.
</p>
</span>
<input type="text" class="filename" id="code_filename" placeholder="turtleCode"/>.js</label>
<span class='help_text' id='code_filename_help_text'>
<p>
The <strong>Save</strong> text area accepts the name of a JavaScript file name to be saved.
</p>
</span>
-->
<button id="clearButton">Clear</button>
<span class='left_help_text' id='clearButton_help_text'>
<p>
The <strong>Clear</strong> button clears the code text area to allow entry of new programs.
</p>
</span>
</div> <!-- codebuttons -->
</div> <!-- examplewrapper -->
</div> <!-- rightcolumn -->
</div> <!-- rightcolumncontainer -->
</div> <!-- container-->
</div> <!-- wrap-->
<!-- scripts -->
<script type="text/javascript" src="examples.js"></script>
<script type="text/javascript" src="turtle.js"></script>
<script type="text/javascript" src="turtleConsole.js"></script>
<script type="text/javascript" src="FileSaver.min.js"></script>
<script src="he.js"></script>
</body>
</html>