lighting

/******************************************************/
public void Resize()
        {

            // perspektiva
            Gl.glViewport(0, 0, m_width, m_height);
            Gl.glMatrixMode(Gl.GL_PROJECTION);
            Gl.glLoadIdentity();
            Glu.gluPerspective(45.0, m_width /(double)m_height, 0.5, 16.0);

            Gl.glMatrixMode(Gl.GL_MODELVIEW);
            Gl.glLoadIdentity();

            float[] spotLightPos = { -0.8f, 2.0f, 0.0f, 1.0f };

            //reflektor je stacionaran-transformacije ne uticu na njega
            Gl.glLightfv(Gl.GL_LIGHT0, Gl.GL_POSITION, spotLightPos);

        }
/******************************************************/
#region Atributi
..
float[] spotLightDirection = { 0.0f, -0.48f, -0.6f};
..
#endregion
/******************************************************/

 public void Draw()
        {
        Gl.glClear(Gl.GL_COLOR_BUFFER_BIT | Gl.GL_DEPTH_BUFFER_BIT);

             //scena
             Gl.glPushMatrix();

             Glu.gluLookAt(0.0f, 0.2f, 0.5f, //ka lopti, eye
              0.0f, 0.0f, 0.0f, //center
               0.0f, 1.0f, 0.0f);//da ne bude naopacke

            #region scena

            Gl.glTranslatef(0.0f, 0.0f, -m_sceneDistance); // m_sceneDistance = 1.3f;
            Gl.glRotatef(m_xRotation, 1.0f, 0.0f, 0.0f); //omoguci rotaciju po x
            Gl.glRotatef(m_yRotation, 0.0f, 1.0f, 0.0f); //omoguci rotaciju po y
            Gl.glRotatef(180.0f, 0.0f, -1.0f, 0.0f); //rotacija scene
            DrawScene();
            Gl.glLightfv(Gl.GL_LIGHT0, Gl.GL_SPOT_DIRECTION, spotLightDirection);
           //Gl.glTranslated(spotLightDirection[0],spotLightDirection[1],spotLightDirection[2]);
           //IscrtajTestObjekat();
            #endregion
.......

/******************************************************/
 private void DrawScene()
        {

            #region postolje
           .....
            //temena postolja

            Gl.glBegin(Gl.GL_QUADS);
            Gl.glNormal3f(0.0f, 1.0f, 0.0f);
            Gl.glVertex3f(-0.65f, -0.49f, 0.7f);
            Gl.glVertex3f(-0.65f, -0.49f, -0.7f);
            Gl.glVertex3f( 0.65f, -0.49f, -0.7f);
            Gl.glVertex3f( 0.65f, -0.49f, 0.7f);
            Gl.glEnd();
           ...
/******************************************************/
 private void Initialize()
        {
...
     Gl.glEnable(Gl.GL_LIGHTING);

            //reflektor
            float[] ambientLight = { 0.1f, 0.1f, 0.1f, 1.0f };
            float[] diffuseLight = { 1.0f, 1.0f, 1.0f, 1.0f };
            Gl.glLightfv(Gl.GL_LIGHT0, Gl.GL_AMBIENT, ambientLight);
            Gl.glLightfv(Gl.GL_LIGHT0, Gl.GL_DIFFUSE, diffuseLight);
            Gl.glLightf(Gl.GL_LIGHT0, Gl.GL_SPOT_CUTOFF, 25.0f);
            Gl.glLightf(Gl.GL_LIGHT0, Gl.GL_SPOT_EXPONENT, 64.0f);
            Gl.glEnable(Gl.GL_LIGHT0);
            //problem - model lopte je crn !

            //tackasto
            float[] red_light = { 0.1f, 0.0f, 0.0f, 1.0f };
            float[] pointDiffuse = { 1.0f, 1.0f, 1.0f, 1.0f };
            Gl.glLightfv(Gl.GL_LIGHT1, Gl.GL_AMBIENT, red_light);
            Gl.glLightfv(Gl.GL_LIGHT1, Gl.GL_DIFFUSE, pointDiffuse);
            Gl.glLightf(Gl.GL_LIGHT1, Gl.GL_SPOT_CUTOFF, 180.0f); //sad je point
            Gl.glEnable(Gl.GL_LIGHT1);
            #endregion
..
/******************************************************/