gearsview.cpp

C:Documents and SettingsAdministrator桌面VC++多媒体特效制作百例CHAR08Gears

        s * rad,
        w1);
      glVertex3f(c * rad,
        s * rad,
        w2);
    }
    glNormal3f(1.0, 0.0, 0.0);
    glVertex3f(rad, 0.0, w1);
    glVertex3f(rad, 0.0, w2);
    glEnd();
  }
}

Profile gear_profile[] =
{0.000, 0.0,
  0.300, 7.0,
  0.340, 0.4,
  0.550, 0.64,
  0.600, 0.4,
  0.950, 1.0
};

float a1 = 27.0;
float a2 = 67.0;
float a3 = 47.0;
float a4 = 87.0;
float i1 = 1.2;
float i2 = 3.1;
float i3 = 2.3;
float i4 = 1.1;
void oneFrame(void)
{
//  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

  glPushMatrix();
  glTranslatef(0.0, 0.0, -4.0);
  glRotatef(a3, 1.0, 1.0, 1.0);
  glRotatef(a4, 0.0, 0.0, -1.0);
  glTranslatef(0.14, 0.2, 0.0);
  gear(76,
    0.4, 2.0, 1.1,
    0.4, 0.04,
    sizeof(gear_profile) / sizeof(Profile), gear_profile);
  glPopMatrix();

  glPushMatrix();
  glTranslatef(0.1, 0.2, -3.8);
  glRotatef(a2, -4.0, 2.0, -1.0);
  glRotatef(a1, 1.0, -3.0, 1.0);
  glTranslatef(0.0, -0.2, 0.0);
  gear(36,
    0.4, 2.0, 1.1,
    0.7, 0.2,
    sizeof(gear_profile) / sizeof(Profile), gear_profile);
  glPopMatrix();

  a1 += i1;
  if (a1 > 360.0)
    a1 -= 360.0;
  if (a1 < 0.0)
    a1 -= 360.0;
  a2 += i2;
  if (a2 > 360.0)
    a2 -= 360.0;
  if (a2 < 0.0)
    a2 -= 360.0;
  a3 += i3;
  if (a3 > 360.0)
    a3 -= 360.0;
  if (a3 < 0.0)
    a3 -= 360.0;
  a4 += i4;
  if (a4 > 360.0)
    a4 -= 360.0;
  if (a4 < 0.0)
    a4 -= 360.0;
//  glutSwapBuffers();
}

//wb add up
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CGearsView

IMPLEMENT_DYNCREATE(CGearsView, CView)

BEGIN_MESSAGE_MAP(CGearsView, CView)
	//{{AFX_MSG_MAP(CGearsView)
	ON_WM_CREATE()
	ON_WM_DESTROY()
	ON_WM_ERASEBKGND()
	ON_WM_SIZE()
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CGearsView construction/destruction

CGearsView::CGearsView()
{
	//add down
	m_pDC = NULL;

}

CGearsView::~CGearsView()
{
}

BOOL CGearsView::PreCreateWindow(CREATESTRUCT& cs)
{
	//add down
	cs.style |= WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
	//add up

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CGearsView drawing

void CGearsView::OnDraw(CDC* pDC)
{
	CGearsDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);

	//add down
	DrawScene();
	//add up
}

/////////////////////////////////////////////////////////////////////////////
// CGearsView printing

BOOL CGearsView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CGearsView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CGearsView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

/////////////////////////////////////////////////////////////////////////////
// CGearsView diagnostics

#ifdef _DEBUG
void CGearsView::AssertValid() const
{
	CView::AssertValid();
}

void CGearsView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CGearsDoc* CGearsView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CGearsDoc)));
	return (CGearsDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CGearsView message handlers

int CGearsView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CView::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	//add down
	Init(); //初始化OpenGL
	//add up
	
	return 0;
}

void CGearsView::OnDestroy() 
{
	//add down
	HGLRC   hrc;

	hrc = ::wglGetCurrentContext();

	::wglMakeCurrent(NULL,  NULL);

	if (hrc)
		::wglDeleteContext(hrc);

	if (m_pDC)
		delete m_pDC;
	//add up

	CView::OnDestroy();
}

BOOL CGearsView::OnEraseBkgnd(CDC* pDC) 
{
	return TRUE;
}

void CGearsView::OnSize(UINT nType, int cx, int cy) 
{
	CView::OnSize(nType, cx, cy);
	
	glViewport(0, 0, cx, cy);
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	glFrustum(-1.0, 1.0, -1.0, 1.0, d_near, d_far);
	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
}

//add down
void CGearsView::Init()
{
	PIXELFORMATDESCRIPTOR pfd;
	int         n;
	HGLRC       hrc;

	m_pDC = new CClientDC(this);

	ASSERT(m_pDC != NULL);

	if (!bSetupPixelFormat())
		return;

	n = ::GetPixelFormat(m_pDC->GetSafeHdc());
	::DescribePixelFormat(m_pDC->GetSafeHdc(), n, sizeof(pfd), &pfd);

	hrc = wglCreateContext(m_pDC->GetSafeHdc());
	wglMakeCurrent(m_pDC->GetSafeHdc(), hrc);

  float f[20];
  glClearColor(1.0, 1.0, 1.0, 0.0);
  /* glShadeModel(GL_FLAT); */
  glEnable(GL_DEPTH_TEST);
  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

  glEnable(GL_LIGHTING);

  glLightf(GL_LIGHT0, GL_SHININESS, 1.0);
  f[0] = 1.3;
  f[1] = 1.3;
  f[2] = -3.3;
  f[3] = 1.0;
  glLightfv(GL_LIGHT0, GL_POSITION, f);
  f[0] = 0.8;
  f[1] = 1.0;
  f[2] = 0.83;
  f[3] = 1.0;
  glLightfv(GL_LIGHT0, GL_SPECULAR, f);
  glLightfv(GL_LIGHT0, GL_DIFFUSE, f);
  glEnable(GL_LIGHT0);

  glLightf(GL_LIGHT1, GL_SHININESS, 1.0);
  f[0] = -2.3;
  f[1] = 0.3;
  f[2] = -7.3;
  f[3] = 1.0;
  glLightfv(GL_LIGHT1, GL_POSITION, f);
  f[0] = 1.0;
  f[1] = 0.8;
  f[2] = 0.93;
  f[3] = 1.0;
  glLightfv(GL_LIGHT1, GL_SPECULAR, f);
  glLightfv(GL_LIGHT1, GL_DIFFUSE, f);
  glEnable(GL_LIGHT1);

  /* gear material */
  f[0] = 0.1;
  f[1] = 0.15;
  f[2] = 0.2;
  f[3] = 1.0;
  glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, f);

  f[0] = 0.9;
  f[1] = 0.3;
  f[2] = 0.3;
  f[3] = 1.0;
  glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, f);

  f[0] = 0.4;
  f[1] = 0.9;
  f[2] = 0.6;
  f[3] = 1.0;
  glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, f);

  glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 4);
}

BOOL CGearsView::bSetupPixelFormat()
{
	static PIXELFORMATDESCRIPTOR pfd =
	{
		sizeof(PIXELFORMATDESCRIPTOR),  // size of this pfd
		1,                              // version number
		PFD_DRAW_TO_WINDOW |            // support window
		  PFD_SUPPORT_OPENGL |          // support OpenGL
		  PFD_DOUBLEBUFFER,             // double buffered
		PFD_TYPE_RGBA,                  // RGBA type
		24,                             // 24-bit color depth
		0, 0, 0, 0, 0, 0,               // color bits ignored
		0,                              // no alpha buffer
		0,                              // shift bit ignored
		0,                              // no accumulation buffer
		0, 0, 0, 0,                     // accum bits ignored
		32,                             // 32-bit z-buffer
		0,                              // no stencil buffer
		0,                              // no auxiliary buffer
		PFD_MAIN_PLANE,                 // main layer
		0,                              // reserved
		0, 0, 0                         // layer masks ignored
	};
	int pixelformat;

	if ( (pixelformat = ChoosePixelFormat(m_pDC->GetSafeHdc(), &pfd)) == 0 )
	{
		MessageBox("ChoosePixelFormat failed");
		return FALSE;
	}

	if (SetPixelFormat(m_pDC->GetSafeHdc(), pixelformat, &pfd) == FALSE)
	{
		MessageBox("SetPixelFormat failed");
		return FALSE;
	}

	return TRUE;
}

void CGearsView::DrawScene(void)
{
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

	oneFrame();

	glFinish();
	SwapBuffers(wglGetCurrentDC());
}