gpstracerappwmce5.aspx.htm

This is a simple GPS tracer developed for Window Mobile 2005/2003 on Compact Framework 2.0 SDK. So f

      (Convert.ToInt32(latitude.Substring(latitude.Length - <span class="code-digit">9</span>, <span class="code-digit">2</span>))) * <span class="code-digit">3600</span>;
    aPoint.Y += 
      (Convert.ToInt32(longitude.Substring(longitude.Length - <span class="code-digit">9</span>, <span class="code-digit">2</span>))) * <span class="code-digit">3600</span>;

    m_points.Add(aPoint);
    draw();
}

<span class="code-keyword">public</span> <span class="code-keyword">void</span> draw()
{
    <span class="code-keyword">float</span> xTo = <span class="code-digit">0</span>;
    <span class="code-keyword">float</span> xFrom = <span class="code-digit">0</span>;
    <span class="code-keyword">float</span> yTo = <span class="code-digit">0</span>;
    <span class="code-keyword">float</span> yFrom = <span class="code-digit">0</span>;
               
    <span class="code-keyword">for</span> (<span class="code-keyword">int</span> i = m_drawded; i &lt; m_points.Count; i++)
    {
        xTo = (m_points[i].X - m_points[<span class="code-digit">0</span>].X) / m_scale + m_center.X;
        xFrom = (m_points[i - <span class="code-digit">1</span>].X - 
                 m_points[<span class="code-digit">0</span>].X) / m_scale + m_center.X;
        yTo = (m_points[i].Y - m_points[<span class="code-digit">0</span>].Y) / m_scale + m_center.Y;
        yFrom = (m_points[i - <span class="code-digit">1</span>].Y - m_points[<span class="code-digit">0</span>].Y) / 
                 m_scale + m_center.Y;
        m_g.DrawLine(m_linePen, (<span class="code-keyword">int</span>)xTo, (<span class="code-keyword">int</span>)yTo, 
                    (<span class="code-keyword">int</span>)xFrom, (<span class="code-keyword">int</span>)yFrom);
        m_g.DrawEllipse(m_pointPen, 
                        <span class="code-keyword">new</span> Rectangle((<span class="code-keyword">int</span>)xFrom - <span class="code-digit">2</span>, 
                        (<span class="code-keyword">int</span>)yFrom - <span class="code-digit">2</span>, <span class="code-digit">4</span>, <span class="code-digit">4</span>));
    }

    m_g.DrawEllipse(m_lastPointPen, 
                    <span class="code-keyword">new</span> Rectangle((<span class="code-keyword">int</span>)xTo - <span class="code-digit">2</span>, (<span class="code-keyword">int</span>)yTo - <span class="code-digit">2</span>, <span class="code-digit">4</span>, <span class="code-digit">4</span>));
    m_drawded++;
}</pre>

<p>At the end, you can see the <code>loadPath(...)</code> and <code>savePath</code> methods. These methods are called by the form that asks the user the filename/location from the windows form dialog <code>m_mapper.loatPath(openFileDialog1.FileName); m_mapper.savePath(saveFileDialog1.FileName);</code>. So this simply loads/saves the <code><span class="code-keyword">private</span> List<span class="code-keyword">&lt;</span>POINT<span class="code-keyword">&gt;</span> m_points;</code> from/to a file. </p>

<div class="SmallText" id="premain9" style="width: 100%;"><img preid="9" src="GpsTracerAppWMCE5.aspx_files/minus.gif" id="preimg9" height="9" width="9"><span preid="9" style="margin-bottom: 0pt;" id="precollapse9"> Collapse</span></div><pre style="margin-top: 0pt;" id="pre9" lang="cs">        <span class="code-keyword">public</span> <span class="code-keyword">void</span> loatPath(<span class="code-SDKkeyword">String</span> filename)
        {
            StreamReader sr = <span class="code-keyword">new</span> StreamReader(filename);

            m_points.Clear();
            <span class="code-keyword">int</span> n = <span class="code-digit">0</span>;
            Point p = <span class="code-keyword">new</span> Point();
            <span class="code-keyword">while</span> (!sr.EndOfStream)
            {

                <span class="code-SDKkeyword">String</span> readed = sr.ReadLine();
                p.X = Convert.ToInt32(readed);
                readed = sr.ReadLine();
                p.Y = Convert.ToInt32(readed);
                m_points.Add(p);
                n++;
            }
            m_drawded = <span class="code-digit">1</span>;
            sr.Close();
            clearAndDraw();
        }

        <span class="code-keyword">public</span> <span class="code-keyword">void</span> savePath(<span class="code-SDKkeyword">String</span> filename)
        {
            StreamWriter sw = <span class="code-keyword">new</span> StreamWriter(filename);

            <span class="code-keyword">foreach</span> (Point p <span class="code-keyword">in</span> m_points)
            {
                sw.WriteLine(Convert.ToString(p.X));
                sw.WriteLine(Convert.ToString(p.Y));
            }

            sw.Flush();
            sw.Close();
        }</pre>

<h2>Points of interest</h2>

<p>I know that this is a simple project for a skilled developer, but I
want to demonstrate that the device development is very simple with
VisualStudio2005 and CompactFramework 2.0. It's my first project on the
great CodeProject website, so please contact me if you have any doubts
or proposals. I'm always available for collaboration. </p>

<h2>History</h2>

<ul>
<li>Start of development: 8/7/2006 </li>

<li>First release: 8/9/2006 </li>

<li>Second release : 8/10/2006 
<ul>
<li>Added Center function </li>

<li>Now demo mode run without GPS or any serial port </li>

<li>Some and various fix </li>
</ul>
</li>

<li>Article edited and posted to the main CodeProject.com article base: 5/22/2007 </li>
</ul>





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