Application with OpenGL via OpenTK Library

This article describes the sample located in the <UnigineSDK>/source/csharp/apps/main_winform/GLOpenTKAppForm/ folder.

The sample demonstrates how to embed Unigine into a Windows Forms application:

• Create a Windows Forms application and embed Unigine into it.
• Initialize OpenGL by using OpenTK library.

To run the sample, you should do the following:

1. Prepare the development environment:
   • Install Microsoft Visual Studio for C# (Visual C# Express). It can be downloaded for free.
     Notice

     Microsoft Visual Studio Community 2015 supports multiple languages and C# by default. Read more about the Visual Studio Community 2015 IDE.
   • Install Microsoft Windows SDK 7.x (can be downloaded for free).
   • Install DirectX redistributive June 2010 (can be downloaded for free).
   • Install Python 2.7 (can be downloaded for free).
   • Install SCons 2.0+ (can be downloaded for free).
   Notice

   Microsoft .NET 5 or higher is required.
   Notice

   OpenTK library will be installed automatically when you install UNIGINE SDK.
2. Open the Visual C# main_x64.csproj project file located in the <UnigineSDK>/source/csharp/apps/main_winform/GLOpenTKAppForm/ folder.
3. Click the button on the toolbar (or DEBUG -> Start Debugging) to start the project.

   

   Windows Form Application will open.

   

This sample contains 4 classes:

• AppForm — inherits the Unigine.App class. In this class thedoUpdate(), doRender() anddoSwap() functions are overridden and call the update(), render() andswap() functions respectively.
• AppFormControl — inherits the System.Windows.Forms.Form class. This class implements all the necessary events, which will be performed when user interacts with the application.
• GLTKAppForm — inherits the AppForm class and initializes the graphics OpenGL API in the Windows Forms Application via the OpenTK library.
• UnigineApp — defines the entry point of the program. C# Wrapper and Engine are initialized here.

• Article on App Class to learn how to create an application based on the Unigine.App class.