Scribble Class

public class Scribble : IMapRenderer

Public Class Scribble
	Implements IMapRenderer

// --- MapCtrl Example
   // Create a scribble object
   Telogis.GeoBase.Scribble myScribble = new Telogis.GeoBase.Scribble();

   // Create a renderlist
   Telogis.GeoBase.RendererList rlist = new Telogis.GeoBase.RendererList();

   public Form1() {
       InitializeComponent();
       // Set the mapCtrl renderer
       mapMain.Renderer = rlist;
       // Add the scribble object to the renderer
       rlist.Add(myScribble);
       // The scribble line is 2 pixels wide and blue
       myScribble.RenderPen = new Pen(Color.Blue, 2);
       // Click the map to trigger an event
       mapMain.MouseClick += new MouseEventHandler(mapMain_MouseClick);
   }

   void mapMain_MouseClick(object sender, MouseEventArgs e) {
       // Translate the clicked location to a LatLon
       LatLon mouseClickLoc = new LatLon(mapMain.XYtoLatLon(e.X, e.Y));
       // If the mouse button was a right-click then...
       if (e.Button == MouseButtons.Right) {
           // Add the click location to the scribble object
           myScribble.AddPoint(mouseClickLoc);
           // Invalidate the map to force a redraw
           mapMain.Invalidate();
       }
   }

// --- Map Example
   // Create an 800px x 500px Map object in California with a zoom value of 4
   Telogis.GeoBase.Map myMap = new Telogis.GeoBase.Map(new LatLon(33.694165, -117.956236), 800, 500, 4);

   // Create a PictureBox to display the map on the Form
   PictureBox myPictureBox = new PictureBox();

   public Form1() {
       InitializeComponent();

       // Specify the renderer
       myMap.Renderer = new ScribbleRenderer();

       // Set the PictureBox size
       myPictureBox.Size = new System.Drawing.Size(800, 500);

       // Set the PictureBox image to the Map image
       myPictureBox.Image = myMap.GetMap();

       // Add the PictureBox to the form
       Controls.Add(myPictureBox);

       // Create a mouse move event
       myPictureBox.MouseMove += new MouseEventHandler(myPictureBox_MouseMove);
   }

   void myPictureBox_MouseMove(object sender, MouseEventArgs e) {
       // Convert the mouse location (XY) to a LatLon
       LatLon mouseLoc = new LatLon(myMap.XYtoLatLon(e.X, e.Y));
       // Was there a left-click while the mouse was moving (drag)?
       if (e.Button == MouseButtons.Left) {
           (myMap.Renderer as ScribbleRenderer).AddPoint(mouseLoc);
           myPictureBox.Image = myMap.GetMap();
       }
   }

   public class ScribbleRenderer : IMapRenderer {

       // Create the scribble object
       Telogis.GeoBase.Scribble myScribble = new Telogis.GeoBase.Scribble();

       // Configure the scribble object
       public void Render(Graphics graphics, RenderContext rc) {
           // Black line, 2px wide
           myScribble.RenderPen = new Pen(Color.Black, 2);
           myScribble.Render(graphics, rc);
       }

       // Required for the IMapRenderer interface - must be postlabelling for scribble
       public RenderMode RequiredRendermodes {
           get { return RenderMode.PostLabelling; }
       }

       // This method is used to add a point to the renderer
       public void AddPoint(LatLon point) {
           myScribble.AddPoint(point);
       }
   }