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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-12-03 11:05:10 -0600
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+<chapter id="getting-started">
+<title
+>Getting Started</title>
+<para
+>When you start &kturtle; you will see something like this: <screenshot
+> <screeninfo
+>Here is a screenshot of &kturtle; when you start it for the first time</screeninfo
+> <mediaobject
+> <imageobject
+> <imagedata fileref="mainwindow.png" format="PNG"/> </imageobject
+> <textobject
+> <phrase
+>&kturtle; Main window</phrase
+> </textobject
+> </mediaobject
+> </screenshot
+> In this Getting Started guide we assume that the language of the &logo; commands is English. You can change this language in <menuchoice
+><guimenu
+>Settings</guimenu
+><guimenuitem
+>Configure &kturtle;...</guimenuitem
+></menuchoice
+> in the <guilabel
+>Language</guilabel
+> section. Be aware that the language you set here for &kturtle; is the one you use to type the &logo; commands.</para>
+
+<sect1 id="first-steps">
+<title
+>First steps with &logo;: meet the Turtle!</title>
+<para
+>You must have noticed the turtle is in the middle of the canvas: you are just about to learn how to control it using commands in the code editor.</para>
+
+<sect2 id="the-turtle-moves">
+<title
+>The Turtle Moves</title>
+<para
+>Let us start by getting the turtle moving. Our turtle can do 3 types of moves, (1) it can go forwards and backwards, (2) it can turn left and right and (3) it can go directly to a position on the screen. Try this for example:</para>
+<para>
+<screen
+>forward 90
+turnleft 90
+</screen>
+Type or copy-paste the code to the code editor and execute it (using <link linkend="file-execute"
+><menuchoice
+><guimenu
+>File</guimenu
+><guimenuitem
+>Execute Commands</guimenuitem
+></menuchoice
+></link
+>) to see the result.</para>
+
+<para
+>When you typed and executed the commands like above in the code editor you might have noticed one or more of the following things:</para>
+<orderedlist>
+<listitem
+><para
+>That &mdash; after executing the commands &mdash; the turtle moves up, draws a line, and then turns a quarter turn to the left. This because you have used the <link linkend="forward"
+><userinput
+>forward</userinput
+></link
+> and the <link linkend="turnleft"
+><userinput
+>turnleft</userinput
+></link
+> commands.</para>
+</listitem>
+<listitem>
+<para
+>That the colour of the code changed while you where typing it: this feature is called <emphasis
+>intuitive highlighting</emphasis
+> &mdash; different types of commands are highlighted differently. This makes reading large blocks of code more easy.</para>
+</listitem>
+<listitem>
+<para
+>That the turtle draws a thin black line.</para>
+</listitem>
+<listitem>
+<para
+>Maybe you got an error message. This could simply mean two things: you could have made a mistake while copying the commands, or you should still set the correct language for the &logo; commands (you can do that by choosing <menuchoice
+><guimenu
+>Settings</guimenu
+><guimenuitem
+>Configure &kturtle;...</guimenuitem
+></menuchoice
+>, in the <guilabel
+>Language</guilabel
+> section).</para>
+</listitem>
+</orderedlist>
+
+<para
+>You will likely understand that <userinput
+>forward 90</userinput
+> commanded the turtle to move forward leaving a line, and that <userinput
+>turnleft 90</userinput
+> commanded the turtle to turn 90 <glossterm linkend="degrees"
+>degrees</glossterm
+> to the left.</para>
+
+<para
+>Please see the following links to the reference manual for a complete explanation of the new commands: <userinput
+>forward</userinput
+>, <userinput
+>backward</userinput
+>, <userinput
+>turnleft</userinput
+>, and <userinput
+>turnright</userinput
+>.</para>
+</sect2>
+
+<sect2 id="more-examples">
+<title
+>More examples</title>
+<para
+>The first example was very simple, so let us go on!</para>
+
+<para>
+<!--translators: if it's not already there, you can copy/paste the translated code below and save it in arrow.logo in your examples folder: tde-i18n/language-code/data/tdeedu/kturtle/ -->
+<screen
+>canvassize 200,200
+canvascolour 0,0,0
+pencolour 255,0,0
+penwidth 5
+clear
+
+go 20,20
+direction 135
+
+forward 200
+turnleft 135
+forward 100
+turnleft 135
+forward 141
+turnleft 135
+forward 100
+turnleft 45
+
+go 40, 100
+</screen>
+Again you can type or copy-paste the code to the code editor or open the <filename
+>arrow.logo</filename
+> file in the <guimenu
+>Open examples</guimenu
+> folder and execute it (using <link linkend="file-execute"
+><menuchoice
+><guimenu
+>File</guimenu
+><guimenuitem
+>Execute Commands</guimenuitem
+></menuchoice
+></link
+>) to see the result. In the next examples you are expected to know the drill.</para>
+
+<para
+>You might have noticed that this second example uses a lot more code. You have also seen a couple of new commands. Here a short explanation of all the new commands:</para>
+
+<para
+><userinput
+>canvassize 200,200</userinput
+> sets the canvas width and height to 200 <glossterm linkend="pixels"
+>pixels</glossterm
+>. The width and the height are equal, so the canvas will be a square.</para>
+
+<para
+><userinput
+>canvascolour 0,0,0</userinput
+> makes the canvas black. <userinput
+>0,0,0</userinput
+> is an <glossterm linkend="rgb"
+>RGB-combination</glossterm
+> where all values are set to <userinput
+>0</userinput
+>, which results in black.</para>
+
+<para
+><userinput
+>pencolor 255,0,0</userinput
+> sets the color of the pen to red. <userinput
+>255,0,0</userinput
+> is an <glossterm linkend="rgb"
+>RGB-combination</glossterm
+> where only the red value is set to <userinput
+>255</userinput
+> (fully on) while the others (green and blue) are set to <userinput
+>0</userinput
+> (fully off). This results in a bright shade of red.</para>
+
+<para
+><userinput
+>penwidth 5</userinput
+> sets the width (the size) of the pen to <userinput
+>5</userinput
+> <glossterm linkend="pixels"
+>pixels</glossterm
+>. From now on every line the turtle draw will have a thickness of <userinput
+>5</userinput
+>, until we change the <userinput
+>penwidth</userinput
+> to something else.</para>
+
+<para
+><userinput
+>clear</userinput
+> clear the canvas, that is all it does.</para>
+
+<para
+><userinput
+>go 20,20</userinput
+> commands the turtle to go to a certain place on the canvas. Counted from the upper left corner, this place is 20 <glossterm linkend="pixels"
+>pixels</glossterm
+> across from the left, and 20 <glossterm linkend="pixels"
+>pixels</glossterm
+> down from the top of the canvas. Note that using the <userinput
+>go</userinput
+> command the turtle will not draw a line.</para>
+
+<para
+><userinput
+>direction 135</userinput
+> set the turtle's direction. The <userinput
+>turnleft</userinput
+> and <userinput
+>turnright</userinput
+> commands change the turtle's angle starting from its current direction. The <userinput
+>direction</userinput
+> command changes the turtle's angle from zero, and thus is not relative to the turtle previous direction.</para>
+
+<para
+>After the <userinput
+>direction</userinput
+> command a lot of <userinput
+>forward</userinput
+> and <userinput
+>turnleft</userinput
+> commands follow. These command do the actual drawing.</para>
+
+<para
+>At last another <userinput
+>go</userinput
+> command is used to move the turtle aside.</para>
+
+<para
+>Make sure you follow the links to the reference. The reference explains each command more thoroughly.</para>
+
+</sect2>
+</sect1>
+
+
+
+<!-- EXTRA SECTIONS CAN BE ADDED TO THE "GETTING STARTED"
+
+<sect1 id="calculations">
+<title
+>Simple Calculations</title>
+<para>
+Not yet written
+</para>
+</sect1>
+<sect1 id="using_variables">
+<title
+>Using Variables: creating 'number containers'</title>
+<para>
+Not yet written
+</para>
+</sect1>
+<sect1 id="using_strings">
+<title
+>Using strings: creating 'text containers'</title>
+<para>
+Not yet written
+</para>
+</sect1>
+<sect1 id="logic">
+<title
+>Logic: asking the computer simple questions</title>
+<para>
+Not yet written
+</para>
+</sect1>
+<sect1 id="recursion">
+<title
+>Recursion: the Turtle is using itself</title>
+<para>
+Draw a maze for example
+</para>
+</sect1
+>-->
+
+
+</chapter> \ No newline at end of file