15

static void resize(int width, int height)
{
    const float ar = (float) width / (float) height;

    glViewport(0, 0, width, height);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    //glFrustum(-ar, ar, -1.0, 1.0, 2.0, 100.0);
    gluPerspective(60,1,0.001,1000);                           →

    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity() ;
}



static void resize(int width, int height)
{
    const float ar = (float) width / (float) height;

    glViewport(0, 0, width, height);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    //glFrustum(-ar, ar, -1.0, 1.0, 2.0, 100.0);
    gluPerspective(60,ar,0.001,1000);                              →

    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity() ;
}



    glViewport(0, 0, width, height);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    //glFrustum(-ar, ar, -1.0, 1.0, 2.0, 100.0);
    //gluPerspective(60,ar,0.001,1000);
    glOrtho(-2.4,+2.4,-1.2,+1.2,-6.0,+6.0);

    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity() ;
}



  glViewport(0, 0, width, height);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    //glFrustum(-ar, ar, -1.0, 1.0, 2.0, 100.0);
    //gluPerspective(60,ar,0.001,1000);
    glOrtho(-3.4,+3.4,-2.2,+2.2,-6.0,+6.0);

    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity() ;
}



void motion(int x,int y);
{
    eyeX(x-320)/320.0;
    eyeT(y-240)/240.0;
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    gluLookAt(eyeX,eyeY,eyeZ,centerX,centerY,centerZ,0,1,0);
}