using Tao.OpenGl;
using Tao.FreeGlut;

namespace animation
{
		
	
	public class Animation
	{
		
		private const int WIDTH = 320;
		private const int HEIGHT = 240;
		
		private System.Collections.Generic.List<SceneEl> elements;
		
		public Animation()
		{
			elements = new System.Collections.Generic.List<SceneEl> ();
			fillElements();
			initGlut();
			initGl();
		}
		
		public void fillElements()
		{
			elements.Add(new Quad(0.0,0.0,0.0) );
		}
		
		public void initGlut()
		{
			Glut.glutInit();
			Glut.glutInitDisplayMode(Glut.GLUT_DOUBLE | Glut.GLUT_RGB );
			Glut.glutInitWindowSize( WIDTH, HEIGHT );
			Glut.glutInitWindowPosition( 100, 100 );
			Glut.glutCreateWindow("animation test");
			Glut.glutDisplayFunc(display);
			Glut.glutReshapeFunc(reshape);
		}
		
		public void initGl()
		{
			Gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
			Gl.glShadeModel(Gl.GL_SMOOTH);
			reshape(WIDTH, HEIGHT);
		}
		
		public void reshape( int w, int h)
		{
			System.Console.WriteLine("reshaping");
			Gl.glViewport(0, 0, w, h);
			Gl.glMatrixMode(Gl.GL_PROJECTION);
			Gl.glLoadIdentity();
			Glu.gluPerspective(120,1,-100, 100);
			Gl.glMatrixMode(Gl.GL_MODELVIEW);
			Gl.glLoadIdentity();
		}
		
		public void display()
		{
			System.Console.WriteLine("displaying");
			Gl.glClear(Gl.GL_COLOR_BUFFER_BIT);
			Glu.gluLookAt(0.0 , 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 1.0, 0.0 );
			
			foreach ( SceneEl el in elements )
			{
				el.draw();	
			}
			
			Glut.glutSwapBuffers();
		}
		
		public void Run()
		{
			Glut.glutMainLoop();
		}
		
		public static void Main()
		{
			Animation anim = new Animation();
			anim.Run();
		}
	}
}

using Tao.OpenGl;

namespace animation
{
	
	
	public class Quad : SceneEl
	{
		double x,y,z;
		
		public Quad(double x, double y, double z)
		{
			this.x = x;
			this.y = y;
			this.z = z;
		}
		
		public void draw()
		{
			System.Console.WriteLine("drawing quad");
			Gl.glPushMatrix();
				Gl.glTranslated(x,y,z);
				
				Gl.glBegin(Gl.GL_QUADS);
					Gl.glColor3d( 1.0, 0.0, 0.0 );
					Gl.glVertex3d(-1.0, 1.0, 0.0);
					
					Gl.glColor3d( 0.5, 0.5, 1.0 );
					Gl.glVertex3d(1.0, 1.0, 0.0);
					
					Gl.glColor3d( 0.0, 1.0, 0.0 );
					Gl.glVertex3d(1.0, -1.0, 0.0);
					
					Gl.glColor3d( 0.5, 0.5, 1.0 );
					Gl.glVertex3d(-1.0, -1.0, 0.0);
				Gl.glEnd();				
			Gl.glPopMatrix();
		}
	}
}