中文XML论坛--各位哥哥姐姐帮帮忙,一个关于OPENGL的问题

[QUOTE][QUOTE]我有一段编码,程序已经提示没有问题可是出来是空白的,怎么也没办法实现方向的控制请问是为什么??帮帮忙,谢谢大家!!!
// HomeworkView.cpp : implementation of the CHomeworkView class
//

#include "stdafx.h"
#include "Homework.h"
#include "cel.h"
#include "cesen.h"

#include "HomeworkDoc.h"
#include "HomeworkView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CHomeworkView

IMPLEMENT_DYNCREATE(CHomeworkView, CView)

BEGIN_MESSAGE_MAP(CHomeworkView, CView)
//{{AFX_MSG_MAP(CHomeworkView)
ON_WM_KEYDOWN()
ON_WM_SIZE()
ON_WM_TIMER()
ON_WM_DESTROY()
ON_WM_CREATE()
ON_WM_CLOSE()
//}}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()

/////////////////////////////////////////////////////////////////////////////
// CHomeworkView construction/destruction

CHomeworkView::CHomeworkView()
{
// TODO: add construction code here

}

CHomeworkView::~CHomeworkView()
{
}

BOOL CHomeworkView::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: Modify the Window class or styles here by modifying
// the CREATESTRUCT cs
////////////////////////////////////////////////////////////////
//设置窗口类型
cs.style |=WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
////////////////////////////////////////////////////////////////
return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CHomeworkView drawing

void CHomeworkView::OnDraw(CDC* pDC)
{
CHomeworkDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
// TODO: add draw code for native data here
}

/////////////////////////////////////////////////////////////////////////////
// CHomeworkView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CHomeworkView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CHomeworkView message handlers

void CHomeworkView::OnSize(UINT nType, int cx, int cy)
{
CView::OnSize(nType, cx, cy);

// TODO: Add your message handler code here
/////////////////////////////////////////////////////////////////
//添加窗口缩放时的图形变换函数
glViewport(0,0,cx,cy);
/////////////////////////////////////////////////////////////////
GLdouble aspect_ratio;
aspect_ratio = (GLdouble)cx/(GLdouble)cy;
::glMatrixMode(GL_PROJECTION);
::glLoadIdentity();
gluPerspective(40.0F, aspect_ratio, 1.0F, 10000.0F);
::glMatrixMode(GL_MODELVIEW);
::glLoadIdentity();

}

void CHomeworkView::OnTimer(UINT nIDEvent)
{
// TODO: Add your message handler code here and/or call default
/////////////////////////////////////////////////////////////////
//添加定时器响应函数和场景更新函数
Invalidate(FALSE);
/////////////////////////////////////////////////////////////////

CView::OnTimer(nIDEvent);
}

void CHomeworkView::OnDestroy()
{
      CView::OnDestroy();

// TODO: Add your message handler code here
  /////////////////////////////////////////////////////////////////
   //删除调色板和渲染上下文、定时器
::wglMakeCurrent(0,0);
::wglDeleteContext( m_hRC);
if (m_hPalette)
     DeleteObject(m_hPalette);
if ( m_pDC )
{
  delete m_pDC;
}
KillTimer(1);

}
/////////////////////////////////////////////////////////////////

int CHomeworkView::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CView::OnCreate(lpCreateStruct) == -1)
return -1;

// TODO: Add your specialized creation code here
//////////////////////////////////////////////////////////////////
//初始化OpenGL和设置定时器
m_pDC = new CClientDC(this);
SetTimer(1,20, NULL);
InitializeOpenGL(m_pDC);
//////////////////////////////////////////////////////////////////
Init();
return 0;
}

void CHomeworkView::OnClose()
{
// TODO: Add your message handler code here and/or call default

CView::OnClose();
}

//////////////////////////////////////////////////////////
// 初始化openGL场景
//////////////////////////////////////////////////////////

BOOL CHomeworkView::InitializeOpenGL(CDC *pDC)
{
m_pDC = pDC;
SetupPixelFormat();
//生成绘制描述表
m_hRC = ::wglCreateContext(m_pDC->GetSafeHdc());
//置当前绘制描述表
::wglMakeCurrent(m_pDC->GetSafeHdc(), m_hRC);

return TRUE;
}
//////////////////////////////////////////////////////////
//      设置像素格式
//////////////////////////////////////////////////////////
BOOL CHomeworkView::SetupPixelFormat()
{
PIXELFORMATDESCRIPTOR pfd = {
    sizeof(PIXELFORMATDESCRIPTOR),    // pfd结构的大小
     1,                                // 版本号
     PFD_DRAW_TO_WINDOW |              // 支持在窗口中绘图
     PFD_SUPPORT_OPENGL |              // 支持 OpenGL
     PFD_DOUBLEBUFFER,                 // 双缓存模式
     PFD_TYPE_RGBA,                    // RGBA 颜色模式
     24,                               // 24 位颜色深度
     0, 0, 0, 0, 0, 0,                 // 忽略颜色位
     0,                                // 没有非透明度缓存
     0,                                // 忽略移位位
     0,                                // 无累加缓存
     0, 0, 0, 0,                       // 忽略累加位
     64,                               // 32 位深度缓存
     0,                                // 无模板缓存
     0,                                // 无辅助缓存
     PFD_MAIN_PLANE,                   // 主层
     0,                                // 保留
     0, 0, 0                           // 忽略层,可见性和损毁掩模
};
int pixelformat;
pixelformat = ::ChoosePixelFormat(m_pDC->GetSafeHdc(), &pfd);//选择像素格式
::SetPixelFormat(m_pDC->GetSafeHdc(), pixelformat, &pfd); //设置像素格式
if(pfd.dwFlags & PFD_NEED_PALETTE)
  SetLogicalPalette(); //设置逻辑调色板
return TRUE;
}
//////////////////////////////////////////////////////////
//      场景绘制与渲染
/////////////////////////////////////////////////////////

BOOL CHomeworkView::RenderScene()
{
::glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
::glMatrixMode(GL_MODELVIEW);
::glLoadIdentity();

::glRotatef( 7 ,1.0,0.0,0.0);

::glTranslatef(0.0,0.0,-0170.0);

::glPopMatrix();
//车轮1 左后
::glPushMatrix();
::glTranslatef(23,-2.0,-43.0);

::glRotatef(rotation ,1.0,0.0,0.0);
glCallList(Model);
::glPopMatrix();

//车轮2 右前  //
::glPushMatrix();
  ::glTranslatef(-26.0,-2.0,34);
   ::glRotatef( rotation ,1.0,0.0,0.0);

  glCallList(Model);
::glPopMatrix();
//车轮3 左前 //
::glPushMatrix();
  ::glTranslatef(24.0,-1.0,35);
         ::glRotatef( rotation ,1.0,0.0,0.0);
  glCallList(Model);
::glPopMatrix();
// 车轮4右后
::glPushMatrix();
  ::glTranslatef(-26.0,-3.0,-32);
  ::glRotatef( rotation ,1.0,0.0,0.0);//车轮的旋转
  ::glCallList(Model);
    ::glPopMatrix();

rotation = (rotation +5) % 360;

//车身
::glPushMatrix();
::glTranslatef(0.0,0.0,0.0);
glCallList(Model2);
::glPushMatrix();

::glPopMatrix();

::SwapBuffers(m_pDC->GetSafeHdc()); //交互缓冲区
return TRUE;
}

void CHomeworkView::Init(GLvoid)
{ ::glShadeModel(GL_SMOOTH);
::glClearColor(0.0F, 0.0F, 0.0F, 0.0F);

::glClearDepth(1.0F);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glFrontFace(GL_CCW);
glDisable(GL_DITHER);

GLfloat ambientLight[] = { 0.3f, 0.3f, 0.3f, 1.0f};
GLfloat diffuseLight[] = { 0.7f, 0.7f, 0.7f, 1.0f};
GLfloat lightPos[] = {6000.0f,6000.0f,6000.0f, 1.0f};

glLightfv(GL_LIGHT0, GL_AMBIENT, ambientLight);
glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuseLight);
glLightfv(GL_LIGHT0, GL_POSITION, lightPos);
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambientLight);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);

glMateriali(GL_FRONT, GL_SHININESS, 128);

//Model = GL3DS_initialize_DC10();
Model=GL3DS_initialize_cel();
Model2=GL3DS_initialize_cesen();

  if (Model ==-1)
{
  printf("Error initializing display list\n");
  exit (-1);
}

rotation =0;
}

void CHomeworkView::SetLogicalPalette()
{
struct
    {
        WORD Version;
        WORD NumberOfEntries;
        PALETTEENTRY aEntries[256];
    } logicalPalette = { 0x300, 256 };

BYTE reds[] = {0, 36, 72, 109, 145, 182, 218, 255};
BYTE greens[] = {0, 36, 72, 109, 145, 182, 218, 255};
BYTE blues[] = {0, 85, 170, 255};

    for (int colorNum=0; colorNum<256; ++colorNum)
    {
        logicalPalette.aEntries[colorNum].peRed =
            reds[colorNum & 0x07];
        logicalPalette.aEntries[colorNum].peGreen =
            greens[(colorNum >> 0x03) & 0x07];
        logicalPalette.aEntries[colorNum].peBlue =
            blues[(colorNum >> 0x06) & 0x03];
        logicalPalette.aEntries[colorNum].peFlags = 0;
    }

m_hPalette = CreatePalette ((LOGPALETTE*)&logicalPalette);

}
//////////////////////////////////////////////////////////////////

/////////////////////////////
static shoulder = 90;
GLfloat elbow[4] = {45,45,45,45};

//////////////////////////////////////
void CHomeworkView::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
// TODO: Add your message handler code here and/or call default

CView::OnKeyDown(nChar, nRepCnt, nFlags);
switch(nChar)
{
case AUX_LEFT:
   shoulder = (shoulder + 5);
break;
case AUX_RIGHT:
   shoulder = (shoulder - 5);
break;
case AUX_UP:
      shoulder = (shoulder + 5);
break;
case AUX_DOWN:
     shoulder = (shoulder - 5);
     break;
}
}


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