private async void AllPicturesToGrayScale(string directory)
{
var colourImages = Directory.GetFiles(directory, "*.jpg", SearchOption.AllDirectories)
.Where(fn => !fn.Contains("bad"))
.Select(fn => new Uri(fn))
// .Take(2)
.ToList();
var tasks = new List <Task <BitmapSource> >();
foreach (Uri colourImage in colourImages)
{
tasks.Add(transforms.CreateGrayScaleImageAsync(colourImage));
//TransformedImages.Add(await transforms.CreateGrayScaleImageAsync(colourImage));
}
//await Task.WhenAll(tasks);
//foreach (var t in tasks)
//{
// TransformedImages.Add(await t);
//}
// results in n * (n+1) / 2 continuations.
//while (tasks.Count > 0)
//{
// Task<BitmapSource> task = await Task.WhenAny(tasks);
// tasks.Remove(task);
// TransformedImages.Add(task.Result);
//}
foreach (var t in tasks.InOrder())
{
TransformedImages.Add(await t);
}
}
private void AllPicturesToGrayScale(string directory)
{
var colourImages = Directory.GetFiles(directory, "*.jpg", SearchOption.AllDirectories)
.Where(fn => !fn.Contains("bad"))
.Select(fn => new Uri(fn))
.Take(2)
.ToList();
foreach (Uri colourImage in colourImages)
{
TransformedImages.Add(transforms.CreateGrayScaleImage(colourImage)());
}
}
private void ConvertToGrayScale(string filename)
{
TransformedImages.Add(transforms.CreateGrayScaleImage(new Uri(filename))());
}
private async Task ConvertToGrayScale(string filename)
{
BitmapSource greyImage = await transforms.CreateGrayScaleImageAsync(filename);
TransformedImages.Add(greyImage);
}