MFC与OpenGL的结合

[Niferry]

学校要求用OpengGL做东西，必须和MFC结合。用纯OpenGL实现效果如下

但是弄到MFC里就只有2D了，效果如下
想知道是哪里出了问题，求教大神谢谢，在线等，很急，没几天要交了。

[赵4老师]

在百度搜”MFC OpenGL“

[snoopy1999]

以下是我MFC程序里的3D图形：


源代码如下，希望能帮到你。其中一些自定义的变量和函数不用管，只需要看框架
// 3Dview.cpp : implementation file
//
#include "stdafx.h"
#include "room1.h"
#include "3Dview.h"
#include "MainFrm.h"

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

#define BS 10.0f
#define HS 36.0f

/////////////////////////////////////////////////////////////////////////////
// C3Dview

IMPLEMENT_DYNCREATE(C3Dview, CView)

C3Dview::C3Dview()
{
}
C3Dview::~C3Dview()
{
}
BEGIN_MESSAGE_MAP(C3Dview, CView)
//{{AFX_MSG_MAP(C3Dview)
ON_WM_CREATE()
ON_WM_DESTROY()
ON_WM_ERASEBKGND()
ON_WM_SIZE()
ON_WM_LBUTTONDOWN()
ON_WM_RBUTTONDOWN()
ON_WM_LBUTTONDBLCLK()
ON_WM_KEYDOWN()
ON_WM_MOUSEMOVE()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// C3Dview drawing

void C3Dview::OnDraw(CDC* pDC)
{
CDocument* pDoc = GetDocument();
// TODO: add draw code here
if (!pDoc)
return;
::glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
RenderScene();//绘图都放在这
//drawfont();
// Tell OpenGL to flush its pipeline
::glFinish();
// Now Swap the buffers
::SwapBuffers( m_pDC->GetSafeHdc() );
}

/////////////////////////////////////////////////////////////////////////////
// C3Dview diagnostics

#ifdef _DEBUG
void C3Dview::AssertValid() const
{
CView::AssertValid();
}

void C3Dview::Dump(CDumpContext& dc) const
{
CView::Dump(dc);
}
#endif //_DEBUG

CRoom1Doc* C3Dview::GetDocument(){
return (CRoom1Doc*)m_pDocument;
}

BOOL C3Dview::InitializeOpenGL()
{
//Get a DC for the Client Area
m_pDC = new CClientDC(this);
//Failure to Get DC
if(m_pDC == NULL)
{
//::MessageBox("Error Obtaining DC");
return FALSE;
}
//Failure to set the pixel format
if(!SetupPixelFormat())
{
return FALSE;
}
//Create Rendering Context
m_hRC = ::wglCreateContext (m_pDC->GetSafeHdc ());
//Failure to Create Rendering Context
if(m_hRC == 0)
{
// MessageBox("Error Creating RC");
return FALSE;
}
//Make the RC Current
if(::wglMakeCurrent (m_pDC->GetSafeHdc (), m_hRC)==FALSE)
{
// MessageBox("Error making RC Current");
return FALSE;
}

/*纹理新增
if (!LoadGLTextures()) // 调用纹理载入子例程( 新增 )
{
return FALSE; // 如果未能载入，返回FALSE( 新增 )
}
::glEnable(GL_TEXTURE_2D); // 启用纹理映射( 新增 )
::glShadeModel(GL_SMOOTH);// 启用阴影平滑
纹理新增*/

//Specify Black as the clear color
::glClearColor(0.2f,0.2f,0.2f,0.0f);//设置背景色
//Specify the back of the buffer as clear depth
::glClearDepth(1.0f);
//Enable Depth Testing
::glEnable(GL_DEPTH_TEST);

/*纹理新增
::glDepthFunc(GL_LEQUAL);// 设置深度缓存
// 启用深度测试
// 所作深度测试的类型
::glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); // 真正精细的透视修正
纹理新增*/
return TRUE;

}
BOOL C3Dview::SetupPixelFormat()
{
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, // 16-bit z-buffer16->32
0,// no stencil buffer
0,// no auxiliary buffer
PFD_MAIN_PLANE, // main layer
0,// reserved
0, 0, 0 // layer masks ignored
};
int m_nPixelFormat = ::ChoosePixelFormat(m_pDC->GetSafeHdc(), &pfd);
if ( m_nPixelFormat == 0 )
{
return FALSE;
}
if ( ::SetPixelFormat(m_pDC->GetSafeHdc(), m_nPixelFormat, &pfd) == FALSE)
{
return FALSE;
}
return TRUE;
}

void C3Dview::RenderScene()
{
//glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear Screen And Depth Buffer
glLoadIdentity(); // Reset The Current Modelview Matrix


//glLoadIdentity(); // Reset The Current Modelview Matrix
//glTranslatef(1.0f,-1.8f,-15.0f);

glTranslatef(x0,y0,z0);
glRotatef(rx,1.0f,0.0f,0.0f);
glRotatef(ry,0.0f,1.0f,0.0f);
glRotatef(rz,0.0f,0.0f,1.0f);

cab3List::iterator cabi;
//CString str="",str1;
for( cabi=cabs.begin();cabi!=cabs.end();++cabi){
//str1="";
drawcab3D(cabi->x, 0.0f, cabi->z);
//str1.Format("id:%d,p:%d,x:%f,z:%f;",cabi->id,cabi->p,cabi->x,cabi->z);
//str+=str1;
drawdevsofcab(*cabi);
}
drawback();
drawcabname();
drawdevname();
glLoadIdentity(); // Reset The Current Modelview Matrix , 这里再重置一次，应该是为了获取正确的鼠标位置

glTranslatef(x0,y0,z0);
glRotatef(rx,1.0f,0.0f,0.0f); // 绕Y轴旋转三角形 ( 新增 )
glRotatef(ry,0.0f,1.0f,0.0f);
glRotatef(rz,0.0f,0.0f,1.0f);


}

void C3Dview::drawdevsofcab(cab3 cab)
{
//自定义函数，略
}

void C3Dview::drawdev3D(Dev3 dev,GLfloat x,GLfloat z)
{
GLfloat y0=((dev.position-1)*0.08f+0.12f)*BS;
GLfloat h=dev.size*0.08f*BS;
GLfloat y=y0;

//在绘制设备时，通过设置顶面和侧面不同的颜色，以造成立体的感觉
glBegin(GL_QUADS); // 绘制正方形
//glColor3f(0.0f,1.0f,0.0f); // 颜色改为蓝色
glColor3f(colors[dev.color][0]*0.9f,colors[dev.color][1]*0.9f,colors[dev.color][2]*0.9f);
glVertex3f( x+BS, y+h,z); // 四边形的右上顶点 (顶面)
glVertex3f(x, y+h,z); // 四边形的左上顶点 (顶面)
glVertex3f(x, y+h, z+BS); // 四边形的左下顶点 (顶面)
glVertex3f(x+BS, y+h, z+BS); // 四边形的右下顶点 (顶面)
....
//图形绘制，同OPENGL

glEnd(); // 立方体绘制结束
}

/////////////////////////////////////////////////////////////////////////////
// C3Dview message handlers

int C3Dview::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CView::OnCreate(lpCreateStruct) == -1)
return -1;

// TODO: Add your specialized creation code here
InitializeOpenGL();
//CRoom1App *pApp = (CRoom1App *)AfxGetApp();

m_tipBtnCtr.Create(this, TTS_ALWAYSTIP);
m_tipBtnCtr.AddTool(this);
m_tipBtnCtr.Activate(TRUE);
m_tipBtnCtr.SetDelayTime(100);//delay time
//m_tipBtnCtr.SetTipTextColor(RGB(0,0,255));
//m_tipBtnCtr.SetTipBkColor( RGB(200,200,0));
m_tipBtnCtr.SetMaxTipWidth(200);

BuildFont();
init0();
return 0;
}

void C3Dview::OnDestroy()
{
CView::OnDestroy();

// TODO: Add your message handler code here
if(::wglMakeCurrent (0,0) == FALSE)
{
MessageBox(_T("Could not make RC non-current"));
}

//Delete the rendering context
if(::wglDeleteContext (m_hRC)==FALSE)
{
MessageBox(_T("Could not delete RC"));
}
//Delete the DC
if(m_pDC)
{
delete m_pDC;
}
//Set it to NULL
m_pDC = NULL;

KillFont();

//AfxMessageBox("haha");
}

BOOL C3Dview::OnEraseBkgnd(CDC* pDC)
{
// TODO: Add your message handler code here and/or call default

return CView::OnEraseBkgnd(pDC);
}

void C3Dview::OnSize(UINT nType, int cx, int cy)
{
CView::OnSize(nType, cx, cy);

// TODO: Add your message handler code here
CView::OnSize(nType, cx, cy);
GLdouble aspect_ratio; // width/height ratio

// TODO: Add your message handler code here
if ( 0 >= cx || 0 >= cy )
{
return;
}
// select the full client area
::glViewport(0, 0, cx, cy);
// compute the aspect ratio
// this will keep all dimension scales equal
aspect_ratio = (GLdouble)cx/(GLdouble)cy;
// select the projection matrix and clear it
::glMatrixMode(GL_PROJECTION);
::glLoadIdentity();
::gluPerspective(45.0f, aspect_ratio, .01f*BS, 200.0f*BS);//画三维


// switch back to the modelview matrix and clear it
::glMatrixMode(GL_MODELVIEW);
::glLoadIdentity();
}

void C3Dview::init0()
{
//自定义函数
}


void C3Dview::OnRButtonDown(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
rx-=1.0f;
Invalidate();

//glm::dvec3 winPos(win.x, viewport[3] - win.y - 1, 0);
CView::OnRButtonDown(nFlags, point);
}


void C3Dview::drawback()//绘制背景，包括地板和机房的三面
{
//自定义函数，略
}

AUX_RGBImageRec* C3Dview::LoadBMP(char *Filename) // 载入位图图象
{
FILE *File=NULL;
if (!Filename) // 确保文件名已提供。
{
return NULL; // 如果没提供，返回 NULL
}
File=fopen(Filename,"r"); //尝试打开文件
if (File) // 文件存在么?
{
fclose(File); // 关闭句柄
return auxDIBImageLoad(Filename);
}
return NULL;
}
int C3Dview::LoadGLTextures()
{
int Status=FALSE; // Status 状态指示器
AUX_RGBImageRec *TextureImage[3]; // 创建纹理的存储空间
memset(TextureImage,0,sizeof(void *)*1); // 将指针设为 NULL

if (TextureImage[0]=LoadBMP("pic/cz1b.bmp"))
{
//Status=TRUE;
glGenTextures(1, &texture[0]); // 创建纹理
glBindTexture(GL_TEXTURE_2D, texture[0]); // 使用来自位图数据生成 的典型纹理
glTexImage2D(GL_TEXTURE_2D, 0, 3, TextureImage[0]->sizeX, TextureImage[0]->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data); // 生成纹理
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); // 线形滤波
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); // 线形滤波
if (TextureImage[0]) // 纹理是否存在
{
if (TextureImage[0]->data)
{
free(TextureImage[0]->data);
}

free(TextureImage[0]); // 释放图像结构
}
}

if (TextureImage[1]=LoadBMP("pic/cz2b.bmp"))
{
//Status=TRUE;
glGenTextures(1, &texture[1]);
glBindTexture(GL_TEXTURE_2D, texture[1]);
glTexImage2D(GL_TEXTURE_2D, 0, 3, TextureImage[1]->sizeX, TextureImage[1]->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data); // 生成纹理
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); // 线形滤波
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
if (TextureImage[1]) // 纹理是否存在
{
if (TextureImage[1]->data) // 纹理图像是否存在
{
free(TextureImage[1]->data);
}

free(TextureImage[1]); // 释放图像结构
}
}

if (TextureImage[2]=LoadBMP("pic/cz3b.bmp"))
{
Status=TRUE;
glGenTextures(1, &texture[2]); // 创建纹理
glBindTexture(GL_TEXTURE_2D, texture[2]); // 使用来自位图数据生成 的典型纹理
glTexImage2D(GL_TEXTURE_2D, 0, 3, TextureImage[2]->sizeX, TextureImage[2]->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data); // 生成纹理
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); // 线形滤波
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); // 线形滤波
if (TextureImage[2]) // 纹理是否存在
{
if (TextureImage[2]->data) // 纹理图像是否存在
{
free(TextureImage[2]->data); // 释放纹理图像占用的内存
}

free(TextureImage[2]); // 释放图像结构
}
}

return Status;
}

BOOL C3Dview::PreTranslateMessage(MSG* pMsg)
{
// TODO: Add your specialized code here and/or call the base class
m_tipBtnCtr.RelayEvent(pMsg);
CString strTemp;
if(devid>0){
strTemp=getdevdetail();
}else{
strTemp = _T("");
}
m_tipBtnCtr.AddTool(this, strTemp);
return CView::PreTranslateMessage(pMsg);
}

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