C# program that uses Tao framework to call OpenGL, GLU and FreeGLUT functions.

tao.cs

// C# program that uses Tao framework to call
// OpenGL, GLU and FreeGLUT functions.
//
// Steps:
// 1. Install Tao framework. Its .Net assemblies will be added to GAC.
// 2. Create an empty C# console application project in Visual Studio
// 3. Add references to Tao.OpenGL.dll and Tao.FreeGLUT.dll to the project.
//    These files are in C:\Program Files (x86)\TaoFramework\bin
// 4. Paste this source code into the C# source file
// 5. Copy FreeGLUT.dll from C:\Program Files (x86)\TaoFramework\lib to
//    directory of the generated EXE file
// 6. Run. You should see a grey teapot.
//
// Copyright (c) 2013 Ashwin Nanjappa
// Released under the MIT License

using System;
using Tao.OpenGl;
using Tao.FreeGlut;

namespace TaoExample
{
    class Program
    {
        static void init_graphics()
        {
            Gl.glEnable(Gl.GL_LIGHTING);
            Gl.glEnable(Gl.GL_LIGHT0);
            float[] light_pos = new float[3] {1, 0.5F, 1};
            Gl.glLightfv(Gl.GL_LIGHT0, Gl.GL_POSITION, light_pos);
            Gl.glEnable(Gl.GL_DEPTH_TEST);
            Gl.glClearColor(1, 1, 1, 1);
        }

        static void on_display()
        {
            Gl.glClear(Gl.GL_COLOR_BUFFER_BIT | Gl.GL_DEPTH_BUFFER_BIT);
            Gl.glLoadIdentity();
            Glu.gluLookAt(0, 0, 5, 0, 0, 1, 0, 1, 0);
            Glut.glutSolidTeapot(1);
            Glut.glutSwapBuffers();
        }

        static void on_reshape(int w, int h)
        {
            Gl.glMatrixMode(Gl.GL_PROJECTION);
            Gl.glLoadIdentity();
            Gl.glViewport(0, 0, w, h);
            Glu.gluPerspective(40, w / h, 1, 100);
            Gl.glMatrixMode(Gl.GL_MODELVIEW);
        }

        static void Main()
        {
            Glut.glutInit();
            Glut.glutInitWindowSize(500, 500);
            Glut.glutCreateWindow("Tao Example");
            init_graphics();
            Glut.glutDisplayFunc(on_display);
            Glut.glutReshapeFunc(on_reshape);
            Glut.glutMainLoop();
        }
    }
}