AutoCAD .NET: Simple But Useful Animation Code Sample Using Editor.DrawVector

We can use the Editor.DrawVector to create some animation effect easily such as radar scanning.  Here we go.

[CommandMethod("Radar")]
public static void Radar_Method()
{
    Editor ed = MgdAcApplication.DocumentManager.MdiActiveDocument.Editor;
    try
    {
        for (int i = 0; i < 360; i++)
        {
            double angle = Math.PI / 180 * i;
            Point3d end = new Point3d(Math.Cos(angle), Math.Sin(angle), 0);
            ed.DrawVector(Point3d.Origin, end, 1, false);
            ed.UpdateScreen();
            System.Threading.Thread.Sleep(1);
        }
    }
    catch (System.Exception ex)
    {
        ed.WriteMessage(Environment.NewLine + ex.ToString());
    }
}

Here is how it behaves in AutoCAD.

   
Enjoy!

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