public override void RequestImage()
{
if (IsCatalogTile)
{
if (!Downloading && !ReadyToRender)
{
Downloading = true;
catalogData = new WebFile(this.URL);
catalogData.OnStateChange = LoadCatalogData;
catalogData.Send();
}
}
else if (GetHipsFileExtension() == ".fits")
{
if (!Downloading && !ReadyToRender)
{
Downloading = true;
if (RenderContext.UseGlVersion2)
{
fitsImage = new FitsImageTile(dataset, URL, delegate(WcsImage wcsImage)
{
Downloading = false;
errored = fitsImage.errored;
TileCache.RemoveFromQueue(this.Key, true);
if (!fitsImage.errored)
{
texReady = true;
ReadyToRender = texReady && (DemReady || !demTile);
RequestPending = false;
MakeTexture();
}
});
}
else
{
fitsImage = FitsImageJs.CreateTiledFits(dataset, URL, delegate(WcsImage wcsImage)
{
texReady = true;
Downloading = false;
errored = fitsImage.errored;
ReadyToRender = texReady && (DemReady || !demTile);
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
texture2d = wcsImage.GetBitmap().GetTexture();
});
}
}
}
else
{
base.RequestImage();
}
}
public virtual void RequestImage()
{
if (dataset.Extension.ToLowerCase().IndexOf("fits") > -1)
{
if (!Downloading && !ReadyToRender)
{
Downloading = true;
if (RenderContext.UseGlVersion2)
{
fitsImage = new FitsImageTile(dataset, URL, delegate(WcsImage wcsImage)
{
Downloading = false;
errored = fitsImage.errored;
TileCache.RemoveFromQueue(this.Key, true);
if (!fitsImage.errored)
{
// For a non-HiPS tiled FITS, this is our
// mechanism for notifying the layer creator
// that the initial FITS data have loaded and
// the FitsProperties can be trusted.
if (Level == 0)
{
dataset.FitsProperties.FireMainImageLoaded(fitsImage);
fitsImage.ApplyDisplaySettings();
}
texReady = true;
ReadyToRender = texReady && (DemReady || !demTile);
RequestPending = false;
MakeTexture();
}
});
}
else
{
fitsImage = FitsImageJs.CreateTiledFits(dataset, URL, delegate(WcsImage wcsImage)
{
if (Level == 0)
{
dataset.FitsProperties.FireMainImageLoaded(fitsImage);
}
texReady = true;
Downloading = false;
errored = fitsImage.errored;
ReadyToRender = texReady && (DemReady || !demTile);
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
texture2d = wcsImage.GetBitmap().GetTexture();
});
}
}
}
else
{
if (Dataset.WcsImage != null)
{
texReady = true;
Downloading = false;
errored = false;
ReadyToRender = true;
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
return;
}
if (!Downloading && !ReadyToRender)
{
Downloading = true;
texture = (ImageElement)Document.CreateElement("img");
CrossDomainImage xdomimg = (CrossDomainImage)(object)texture;
texture.AddEventListener("load", delegate(ElementEvent e)
{
texReady = true;
Downloading = false;
errored = false;
ReadyToRender = texReady && (DemReady || !demTile);
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
MakeTexture();
}, false);
texture.AddEventListener("error", delegate(ElementEvent e)
{
if (!texture.HasAttribute("proxyattempt"))
{
texture.SetAttribute("proxyattempt", true);
// NOTE: `this.URL` is dynamically generated using
// URLHelpers.rewrite(). Say that we request tiles from
// example.com, which requires CORS proxying. Say also
// that this callback is called for a request to a tile
// that should in fact be available. If a different
// request fails before this callback is called,
// activateProxy() will be called on the example.com
// domain, making it so that `this.URL` in the following
// call goes through the proxy, making it so that
// `new_url` is null, making it so that this tile is
// erroneously marked as failed when it should not be.
// The solution: make sure to check proxy activation
// with the *original* request URL, `texture.Src`, not
// the one that may have been updated, `this.URL`.
string new_url = URLHelpers.singleton.activateProxy(texture.Src);
if (new_url != null)
{ // null => don't bother: we know that the proxy won't help
texture.Src = new_url;
return;
}
}
Downloading = false;
ReadyToRender = false;
errored = true;
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
}, false);
xdomimg.crossOrigin = "anonymous";
texture.Src = this.URL;
}
}
}
public override void RequestImage()
{
fitsImage = dataset.WcsImage as FitsImage;
if (fitsImage != null)
{
texReady = true;
Downloading = false;
errored = fitsImage.errored;
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
if (RenderContext.UseGlVersion2)
{
MakeTexture();
ReadyToRender = true;
}
else
{
bmp = fitsImage.GetBitmap();
texture2d = bmp.GetTexture();
ReadyToRender = true;
}
}
else if (dataset.Extension == ".fits" && dataset.WcsImage == null)
{
if (!Downloading && !ReadyToRender)
{
Downloading = true;
if (RenderContext.UseGlVersion2)
{
fitsImage = new FitsImageTile(dataset, URL, delegate(WcsImage wcsImage)
{
Downloading = false;
errored = fitsImage.errored;
TileCache.RemoveFromQueue(this.Key, true);
if (!fitsImage.errored)
{
// For a non-HiPS tiled FITS, this is our
// mechanism for notifying the layer creator
// that the initial FITS data have loaded and
// the FitsProperties can be trusted.
if (Level == 0)
{
dataset.FitsProperties.FireMainImageLoaded(fitsImage);
}
texReady = true;
ReadyToRender = texReady && (DemReady || !demTile);
RequestPending = false;
MakeTexture();
ReadyToRender = true;
}
});
}
else
{
fitsImage = FitsImageJs.CreateTiledFits(dataset, URL, delegate(WcsImage wcsImage)
{
if (Level == 0)
{
dataset.FitsProperties.FireMainImageLoaded(fitsImage);
}
texReady = true;
Downloading = false;
errored = fitsImage.errored;
ReadyToRender = texReady && (DemReady || !demTile);
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
bmp = wcsImage.GetBitmap();
texture2d = bmp.GetTexture();
ReadyToRender = true;
});
}
}
}
else
{
base.RequestImage();
}
}
