//////////////////////////////////////////
class ViewManager
{
  ViewManager()
  {
    m_iViewType = -1;
    m_fFov = PI/3.0; 
    m_fSpecialScale = 1;
    SetViewType(2);
  }

  void SetViewType(int iViewType)
  {
    if (m_iViewType != iViewType)
    {
      m_iViewType = iViewType;
      if (m_iViewType == 2)
      {
        ortho(0, width, -height, 0, -10, 10);
        resetMatrix();
      }  
      else if (m_iViewType == 3)
      {
        float cameraZ = (height/2.0) / tan(PI * 60.0 / 360.0); 
        perspective(-m_fFov, float(width)/m_fSpecialScale/float(height), 10, 5000); 
      }
      else
      {
        print("Unknown view type: " + iViewType);
      }
    }
  }
  
  void SetSpecialScale(float fNewScale)
  {
    m_fSpecialScale = fNewScale;
    if (m_iViewType == 3)
    {
      m_iViewType = -1;
      SetViewType(3);
    }
  }

  int m_iViewType;
  float m_fFov;
  float m_fSpecialScale;
}