protected override void GetSource( Envelope extent, int width, int height, DynamicLayer.OnImageComplete onComplete )
{
_currentWidth = width;
_currentHeight = height;
MapPoints = new List<MapPoint>();
//Make up some dummy data
int count = 0;
while( count < 1000 )
{
MapPoints.Add( new MapPoint( extent.XMin + ( extent.Width * ( _random.Next( 100 ) / 100.00 ) ),
extent.YMin + ( extent.Height * ( _random.Next( 100 ) / 100.00 ) ),
extent.SpatialReference ) );
count++;
}
//Make up some dummy data
_pngRenderer = new PixelPngRenderer( _currentWidth, _currentHeight, MapPoints );
ParameterizedThreadStart starter = new ParameterizedThreadStart( ( pngRenderer ) =>
{
Stream imageStream = InitalizeImage( pngRenderer as PixelPngRenderer );
Dispatcher.BeginInvoke( () =>
{
_image = new BitmapImage();
_image.SetSource( imageStream );
onComplete( _image, width, height, extent );
} );
} );
new Thread( starter ).Start( _pngRenderer );
}
private Stream InitalizeImage( PixelPngRenderer pngRenderer )
{
pngRenderer.Display();
return pngRenderer.GetImageStream();
}
