// Retrieves image properties given an XML file.
public static ImageProperties GetImageProperties(string xmldata, string name, string path)
{
if (xmldata != null && xmldata.Length > 0)
{
//Create the output structure (empty)
ImageProperties output = new ImageProperties();
//Convert file data into XML format for easy property access.
XmlDocument xhr = new XmlDocument();
xhr.LoadXml(xmldata);
//Only count from the first found Image Properties Element.
XmlNodeList temp = xhr.GetElementsByTagName("IMAGE_PROPERTIES");
if (temp.Count > 0)
{
//Fill the output structure.
output.name = name;
output.path = path;
output.width = System.Convert.ToInt32(temp[0].Attributes.GetNamedItem("WIDTH").Value);
output.height = System.Convert.ToInt32(temp[0].Attributes.GetNamedItem("HEIGHT").Value);
output.numImages = System.Convert.ToInt32(temp[0].Attributes.GetNamedItem("NUMIMAGES").Value);
output.numTiles = System.Convert.ToInt32(temp[0].Attributes.GetNamedItem("NUMTILES").Value);
output.version = System.Convert.ToSingle(temp[0].Attributes.GetNamedItem("VERSION").Value);
output.tileSize = System.Convert.ToInt32(temp[0].Attributes.GetNamedItem("TILESIZE").Value);
}
return output;
}
return new ImageProperties();
}
// Builds an image from multiple sources.
static Bitmap assembleImage(ImageProperties imageData)
{
//Create a canvas ( image array )
Bitmap output = new Bitmap(imageData.width, imageData.height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
int zoom = (imageData.width > imageData.height) ? findZoom(imageData.width) : findZoom(imageData.height);
int nbrTilesX = (int)Math.Ceiling((float)imageData.width / (float)imageData.tileSize);
int nbrTilesY = (int)Math.Ceiling((float)imageData.height / (float)imageData.tileSize);
int loaded = 0;
int totalTiles = nbrTilesX * nbrTilesY;
int skippedTiles = imageData.numTiles - totalTiles;
int tileGroup = (int) Math.Floor( (float)skippedTiles / 256 ); // Original script divides by 256. Perhaps it refers to the tile size?
int tileGroupCounter = (int)((float)skippedTiles % 256); // Original script divides by 256. Perhaps it refers to the tile size?
int x, y;
for (y = 0; y < nbrTilesY; y++)
{
for (x = 0; x < nbrTilesX; x++)
{
if (tileGroupCounter >= 256)
{
tileGroup++;
tileGroupCounter = 0;
}
tileGroupCounter++;
string url = imageData.path + "/TileGroup" + tileGroup + "/" + zoom + "-" + x + "-" + y + ".jpg";
HttpStatusCode result = FileStatus(url);
try
{
//Try all zoom levels under the current.
while( result != HttpStatusCode.OK && zoom > 0)
{
if (result == HttpStatusCode.NotFound)
{
zoom--;
url = imageData.path + "/TileGroup" + tileGroup + "/" + zoom + "-" + x + "-" + y + ".jpg";
result = FileStatus(url);
}
else
{
Console.WriteLine("Unexpected server error : " + FileStatus(url).ToString());
}
}
//Add a tile image to the canvas.
if (result == HttpStatusCode.OK)
{
output = OverlayImage(output, GetTile(url), x * imageData.tileSize, y * imageData.tileSize);
}
}
catch
{
Console.WriteLine("I don't know what happened.");
}
}
}
//Return image.
return output;
}
// Retrieves the urls of all images used in the maximum level zoomify viewer.
public static string[] GetImageList(ImageProperties imageData)
{
List<string> output = new List<string>();
int zoom = (imageData.width > imageData.height) ? findZoom(imageData.width) : findZoom(imageData.height);
int nbrTilesX = (int)Math.Ceiling((float)imageData.width / (float)imageData.tileSize);
int nbrTilesY = (int)Math.Ceiling((float)imageData.height / (float)imageData.tileSize);
int totalTiles = nbrTilesX * nbrTilesY;
int skippedTiles = imageData.numTiles - totalTiles;
int tileGroup = (int) Math.Floor( (float)skippedTiles / 256 ); // Original script divides by 256. Perhaps it refers to the tile size?
int tileGroupCounter = (int)((float)skippedTiles % 256); // Original script divides by 256. Perhaps it refers to the tile size?
int x, y;
for (y = 0; y < nbrTilesY; y++)
{
for (x = 0; x < nbrTilesX; x++)
{
if (tileGroupCounter >= 256)
{
tileGroup++;
tileGroupCounter = 0;
}
tileGroupCounter++;
output.Add(imageData.path + "/TileGroup" + tileGroup + "/" + zoom + "-" + x + "-" + y + ".jpg");
}
}
return output.ToArray();
}
