Awesome

CutView

a diagonal view for xamarin forms based on NControl

Setup

• Available on NuGet: CutView
• Add nuget package to your Xamarin.Forms .netStandard project and to your platform-specific projects (iOS and Android)
• Initialize the NControl renderer on your platforms

    NControl.Droid.NControlViewRenderer.Init();
     NControl.iOS.NControlViewRenderer.Init();

Samples

The sample you can find here https://github.com/Herocod3r/CutView/blob/master/Test/App/App/MainPage.xaml

xmlns:ctrl="clr-namespace:Plugin;assembly=CutView"

   <ctrl:CutView Inset="20" FillColor="SkyBlue" />

*The inset idicates the percentage of cut to the view

Check source code for more info