/// <summary>
/// This function is used to create image pyramids.
/// </summary>
/// <param name="inputDetails">
/// Input image details.
/// </param>
public void CreatePyramids(ImagePyramidDetails inputDetails)
{
if (!this.createImageWorker.IsBusy)
{
this.tileGenerator = null;
this.plateGenerator = null;
this.cancellationToken = null;
// Start the image pyramids generation operation asynchronously.
this.createImageWorker.RunWorkerAsync(inputDetails);
}
}
/// <summary>
/// This function is used to create image pyramids.
/// </summary>
/// <param name="inputDetails">
/// Input image details.
/// </param>
public void CreatePyramids(ImagePyramidDetails inputDetails)
{
if (!this.createImageWorker.IsBusy)
{
this.tileGenerator = null;
this.plateGenerator = null;
this.cancellationToken = null;
// Start the image pyramids generation operation asynchronously.
this.createImageWorker.RunWorkerAsync(inputDetails);
}
}
/// <summary>
/// This event is raised when the create pyramid function is called.
/// </summary>
/// <param name="sender">
/// create ImageWorker.
/// </param>
/// <param name="e">
/// DoWork EventArgs.
/// </param>
private void OnCreateImageWorkerDoWork(object sender, DoWorkEventArgs e)
{
ImagePyramidDetails inputDetails = e.Argument as ImagePyramidDetails;
if (inputDetails != null)
{
this.CheckCancel(e);
NotifyMessage(PyramidGenerationSteps.LoadingImage, PyramidGenerationStatus.Started);
this.CheckCancel(e);
NotifyMessage(PyramidGenerationSteps.PyramidGeneration, PyramidGenerationStatus.Started);
// Define ITileCreator instance for creating image tiles.
// If the input projection type and output projection type is same then we need to tile the image.
Core.ITileCreator tileCreator = null;
// Calculates the estimated thumbnail generation time
Stopwatch thumbnailGenerationStopwatch = new Stopwatch();
thumbnailGenerationStopwatch.Start();
if (inputDetails.InputProjection == InputProjections.EquiRectangular)
{
// Read and initialize the image as an IGrid.
var imageGrid = new Core.ImageGrid(inputDetails.InputImagePath, true);
var equirectangularGridMap = new Core.EquirectangularGridMap(imageGrid, inputDetails.InputBoundary);
var imageColorMap = new Core.ImageColorMap(equirectangularGridMap);
tileCreator = Core.TileCreatorFactory.CreateImageTileCreator(
imageColorMap,
inputDetails.OutputProjection,
inputDetails.OutputDirectory);
}
else
{
Core.IImageTileSerializer serializer = new Core.ImageTileSerializer(
Core.TileHelper.GetDefaultImageTilePathTemplate(inputDetails.OutputDirectory),
ImageFormat.Png);
tileCreator = new Core.TileChopper(inputDetails.InputImagePath, serializer, inputDetails.OutputProjection, inputDetails.InputBoundary);
}
thumbnailGenerationStopwatch.Stop();
// Thumbnail estimated time is time required to load the image and then create the thumbnail with graphics
this.ThumbnailEstimatedTime = thumbnailGenerationStopwatch.ElapsedMilliseconds * Constants.ThumbnailMultiplier;
// Define plumbing for looping through all the tiles to be created for base image and pyramid.
tileGenerator = new Core.TileGenerator(tileCreator);
this.cancellationToken = new CancellationTokenSource();
tileGenerator.ParallelOptions.CancellationToken = this.cancellationToken.Token;
this.CheckCancel(e);
// Define bounds of the image. Image is assumed to cover the entire world.
// If not, change the coordinates accordingly.
// For Mercator projection, longitude spans from -180 to +180 and latitude from 90 to -90.
Core.Boundary gridBoundary = new Core.Boundary(
inputDetails.InputBoundary.Left,
inputDetails.InputBoundary.Top,
inputDetails.InputBoundary.Right,
inputDetails.InputBoundary.Bottom);
if (inputDetails.OutputProjection == ProjectionTypes.Toast)
{
// For Toast projection, longitude spans from 0 to +360 and latitude from 90 to -90.
gridBoundary.Left += 180;
gridBoundary.Right += 180;
}
// Start building base image and the pyramid.
tileGenerator.Generate(inputDetails.Level, gridBoundary);
if (inputDetails.IsGeneratePlate)
{
NotifyMessage(PyramidGenerationSteps.PlateFileGeneration, PyramidGenerationStatus.Started);
this.CheckCancel(e);
// Generate Plate file.
Core.ImageTileSerializer pyramid = new Core.ImageTileSerializer(
Core.TileHelper.GetDefaultImageTilePathTemplate(inputDetails.OutputDirectory),
ImageFormat.Png);
plateGenerator = new Core.PlateFileGenerator(
System.IO.Path.Combine(inputDetails.OutputDirectory, inputDetails.OutputFilename + ".plate"),
inputDetails.Level,
ImageFormat.Png);
plateGenerator.CreateFromImageTile(pyramid);
}
this.CheckCancel(e);
NotifyMessage(PyramidGenerationSteps.ThumbnailGeneration, PyramidGenerationStatus.Started);
// Generate Thumbnail Images.
string thumbnailFile = System.IO.Path.Combine(inputDetails.OutputDirectory, inputDetails.OutputFilename + ".jpeg");
Core.TileHelper.GenerateThumbnail(inputDetails.InputImagePath, 96, 45, thumbnailFile, ImageFormat.Jpeg);
this.CheckCancel(e);
NotifyMessage(PyramidGenerationSteps.WTMLGeneration, PyramidGenerationStatus.Started);
// Get the path of image tiles created and save it in WTML file.
string pyramidPath = Core.WtmlCollection.GetWtmlTextureTilePath(Core.TileHelper.GetDefaultImageTilePathTemplate(inputDetails.OutputDirectory), ImageFormat.Png.ToString());
Core.Boundary inputBoundary = new Core.Boundary(
inputDetails.InputBoundary.Left,
inputDetails.InputBoundary.Top,
inputDetails.InputBoundary.Right,
inputDetails.InputBoundary.Bottom);
// Create and save WTML collection file.
Core.WtmlCollection wtmlCollection = new Core.WtmlCollection(inputDetails.OutputFilename, thumbnailFile, pyramidPath, inputDetails.Level, inputDetails.OutputProjection, inputBoundary);
wtmlCollection.Credit = inputDetails.Credits;
wtmlCollection.CreditUrl = inputDetails.CreditsURL;
string path = System.IO.Path.Combine(inputDetails.OutputDirectory, inputDetails.OutputFilename + ".wtml");
wtmlCollection.Save(path);
}
}
