/// <summary>
/// Initialize graphics objects
/// </summary>
/// <param name="drawArgs"></param>
public override void Initialize(MFW3D.DrawArgs drawArgs)
{
base.Initialize(drawArgs);
lastUpdatelat = lastUpdatelon = MFW3D.Angle.Zero;
lastUpdatealt = 0.0;
m_needsupdate = true;
Image = new System.Drawing.Bitmap(Directory.GetParent(Application.ExecutablePath) + "\\Plugins\\Flickr\\flickr.ico");
}
/// <summary>
/// This method updates the Icons to reflect only those in view
/// </summary>
/// <param name="drawArgs"></param>
public override void Update(MFW3D.DrawArgs drawArgs)
{
base.Update(drawArgs);
double distance = MFW3D.World.ApproxAngularDistance(drawArgs.WorldCamera.Latitude,
drawArgs.WorldCamera.Longitude, this.lastUpdatelat, this.lastUpdatelon).Degrees;
double altchange = Math.Abs(this.lastUpdatealt - drawArgs.WorldCamera.Altitude);
if (distance > 10 || altchange < 10000.0 || m_needsupdate)
{
this.lastUpdatelon = drawArgs.WorldCamera.Longitude;
this.lastUpdatelat = drawArgs.WorldCamera.Latitude;
this.lastUpdatealt = drawArgs.WorldCamera.Altitude;
this.m_needsupdate = false;
double viewNorth = drawArgs.WorldCamera.Latitude.Degrees + drawArgs.WorldCamera.TrueViewRange.Degrees * 0.5;
double viewSouth = drawArgs.WorldCamera.Latitude.Degrees - drawArgs.WorldCamera.TrueViewRange.Degrees * 0.5;
double viewWest = drawArgs.WorldCamera.Longitude.Degrees - drawArgs.WorldCamera.TrueViewRange.Degrees * 0.5;
double viewEast = drawArgs.WorldCamera.Longitude.Degrees + drawArgs.WorldCamera.TrueViewRange.Degrees * 0.5;
//Need lock on the folder
lock (this)
{
//TODO: Implement temporary caching and redownload on request
PhotoCollection allPhotos = GetPhotoCollection(viewWest, viewSouth,
viewEast, viewNorth);
this.RemoveAll();
foreach (Photo photo in allPhotos)
{
double photolat = Convert.ToDouble(photo.Latitude);
double photolon = Convert.ToDouble(photo.Longitude);
MFW3D.Renderable.Icon ic = new MFW3D.Renderable.Icon(photo.Title, photolat
, photolon);
ic.Image = Image;
ic.Width = 16;
ic.Height = 16;
//ic.MinimumDisplayDistance = 100000;
//WorldWind.Renderable.ScreenOverlay overlay
//= new WorldWind.Renderable.ScreenOverlay(ic.Name,0.0f,0.0f,photo.ThumbnailUrl);
//ic.AddOverlay(overlay);
ic.isSelectable = true;
ic.Description = "<img src=\"" + photo.ThumbnailUrl + "\"/><br>" +
photo.License + "<br>" +
photo.DateTaken;
double distanceToIcon = Vector3.Length(ic.Position - drawArgs.WorldCamera.Position);
//If Camera is far render as icon
//if(ic.MinimumDisplayDistance < distanceToIcon)
this.Add(ic);
//if Camera is near render as textured polygon
/*
* else
* {
* Point3d[] lineends = new Point3d[2];
* lineends[0].X = photolon - 0.1;
* lineends[0].Y = photolat - 0.1;
* lineends[0].Z = 1000;
* lineends[1].X = photolon + 0.1;
* lineends[1].Y = photolat + 0.1;
* lineends[1].Z = 1000;
*
* WorldWind.LineFeature line = new LineFeature(photo.Title,
* m_world,lineends,photo.ThumbnailUrl);
* line.AltitudeMode = AltitudeMode.RelativeToGround;
* line.DistanceAboveSurface = 0;
* line.Extrude = true;
*
* this.Add(line);
* }
*/
//Console.WriteLine("Photos title is " + photo.Title + photo.Latitude + photo.Longitude);
}
}
}
}