My first little Unity 3D Virtual Reality project, inspired by my old friend the Nintendo Entertainment System. Please keep in mind the I have never used Unity 3D before, so this is my first sandbox application…
It’s not super useful in practice, but a nice little exercise that combines to cool C# features into a fun asynchronous “magic” trick.
privateconstint INFINITE = -1;
publicstaticasyncTask MutableWhenAll(thisObservableCollection<Task> collection)
await MutableWhenSomething(collection, Task.WhenAll);
publicstaticasyncTask MutableWhenAny(thisObservableCollection<Task> collection)
await MutableWhenSomething(collection, Task.WhenAny);
privatestaticasyncTask MutableWhenSomething(thisObservableCollection<Task> collection, Func<IEnumerable<Task>, Task> whenSomething)
Task waitAllTask = null;
Task helperTask = null;
bool isCollectionChanged = false;
//Cancellation on collection changed eventvar cts = newCancellationTokenSource();
var cancelActionHandler = (sender, arg) => cts.Cancel(false);
collection.CollectionChanged += cancelActionHandler;
waitAllTask = whenSomething(collection);
//Wait on current collection or collection changed eventtry
helperTask = Task.Delay(INFINITE, cts.Token);
isCollectionChanged = cts.IsCancellationRequested;
collection.CollectionChanged -= cancelActionHandler;
//Return the WaitAll on collection resultsawait waitAllTask;
A simple example application that demonstrates the MutableWhenAll extension on an observable collection of tasks. The longest running task is added to the observable collection after MutableWhenAll is called, but the MutableWhenAll will complete only when all tasks (included this longest running task) are completed.
A little “fun” Qt5 console application to create a directory (a.k.a. folder) ending with a space character (” “). This directory can not be removed with standard Windows tools, including most console applications.
I build a simple Color Picker 1.1 application that samples the pixel color under the mouse cursor point (because I needed it). The application is a stand alone (static build) Qt5 application with some minor Win32 API stuff, to sample the color at the cursor position.
The application supports a number of RGB based color formats and formating formats. The application can run in the background, and used the CTRL+1, CTRL+2, and CTRL+3 hotkey combinations to sample a color in one of its three sample slots. The CTRL+SHIFT+1, CTRL+SHIFT+2, and CTRL+SHIFT+3 hotkey combinations can be used to copy the sample slot content to the clibboard. This enables easy copy and paste access to the sampled color values.