NEHE教程第19课的粒子系统的代码如何在MFC中实现

Question

我将第十九课的代码弄到MFC单文档视图上
具体如下
// 粒子系统MFCDoc.cpp :  CMFCDoc 类的实现
//#include "stdafx.h"
#include "粒子系统MFC.h"#include "粒子系统MFCDoc.h"
#include ".\粒子系统mfcdoc.h"#ifdef _DEBUG
#define new DEBUG_NEW#endif
// CMFCDoc
static GLfloat color[12][3]= // Rainbow Of Colors
{
{1.0f,0.5f,0.5f},{1.0f,0.75f,0.5f},{1.0f,1.0f,0.5f},{0.75f,1.0f,0.5f},
{0.5f,1.0f,0.5f},{0.5f,1.0f,0.75f},{0.5f,1.0f,1.0f},{0.5f,0.75f,1.0f},
{0.5f,0.5f,1.0f},{0.75f,0.5f,1.0f},{1.0f,0.5f,1.0f},{1.0f,0.5f,0.75f}
};
IMPLEMENT_DYNCREATE(CMFCDoc, CDocument)BEGIN_MESSAGE_MAP(CMFCDoc, CDocument)
END_MESSAGE_MAP()
// CMFCDoc 构造/析构CMFCDoc::CMFCDoc()
: texture(0)
{
// TODO: 在此添加一次性构造代码}CMFCDoc::~CMFCDoc()
{
}BOOL CMFCDoc::OnNewDocument()
{
if (!CDocument::OnNewDocument())
return FALSE; // TODO: 在此添加重新初始化代码
// (SDI 文档将重用该文档) return TRUE;
}
// CMFCDoc 序列化void CMFCDoc::Serialize(CArchive& ar)
{
if (ar.IsStoring())
{
// TODO: 在此添加存储代码
}
else
{
// TODO: 在此添加加载代码
}
}
// CMFCDoc 诊断#ifdef _DEBUG
void CMFCDoc::AssertValid() const
{
CDocument::AssertValid();
}void CMFCDoc::Dump(CDumpContext& dc) const
{
CDocument::Dump(dc);
}
#endif //_DEBUG
// CMFCDoc 命令bool CMFCDoc::init(void)
{
  LoadGLTextures();
glShadeModel(GL_SMOOTH); // Enable Smooth Shading
  glClearColor(0.0f,0.0f,0.0f,0.0f); // Black Background
glClearDepth(1.0f); // Depth Buffer Setup
  glDisable(GL_DEPTH_TEST); // Disable Depth Testing
   glEnable(GL_BLEND); // Enable Blending
glBlendFunc(GL_SRC_ALPHA,GL_ONE); // Type Of Blending To Perform
glHint(GL_PERSPECTIVE_CORRECTION_HINT,GL_NICEST); // Really Nice Perspective Calculations
glHint(GL_POINT_SMOOTH_HINT,GL_NICEST); // Really Nice Point Smoothing
glEnable(GL_TEXTURE_2D); // Enable Texture Mapping
glBindTexture(GL_TEXTURE_2D,texture);
for(int i=0;i<MAXNUMBER;i++)
{
s[i].active=true;
s[i].life=1.0;
s[i].fade=float(rand()%100)/1000.0f+0.003f;
s[i].r=color[i*(12/MAXNUMBER)][0];
s[i].g=color[i*(12/MAXNUMBER)][0];
s[i].b=color[i*(12/MAXNUMBER)][0];
s[i].gx=0;
s[i].gy=-0.8 ;
s[i].gz=0;
s[i].ax=float((rand()%50)-26.0f)*10.0f;
s[i].ay=float((rand()%50)-26.0f)*10.0f;
s[i].az=float((rand()%50)-26.0f)*10.0f;
}

return true;
}AUX_RGBImageRec * CMFCDoc::LoadBMP(char *filename)
{
FILE *file=NULL;
if(filename==NULL)
return false;
file=fopen(filename,"r");
if(file)
{
fclose(file);
return auxDIBImageLoad(filename);
}
return NULL;
}void CMFCDoc::LoadGLTextures(void)
{
AUX_RGBImageRec *TextureImage[1];
    memset(TextureImage,0,sizeof(void *)*1);  if(TextureImage[0]=LoadBMP("Data/Particle.bmp") )
 {
   
glGenTextures(1, &texture ); // Create One Texture
glBindTexture(GL_TEXTURE_2D, texture );
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, 3, TextureImage[0]->sizeX, TextureImage[0]->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data);
 }   
 
        if (TextureImage[0]) // If Texture Exists
{
if (TextureImage[0]->data) // If Texture Image Exists
{
free(TextureImage[0]->data); // Free The Texture Image Memory
}
free(TextureImage[0]); // Free The Image Structure
}
}

Answer 1

// 双重纹理实验MFCView.cpp : CMFCView 类的实现
//#include "stdafx.h"
#include "粒子系统MFC.h"#include "粒子系统MFCDoc.h"
#include "粒子系统MFCView.h"
#include ".\粒子系统mfcview.h"#ifdef _DEBUG
#define new DEBUG_NEW
#endif
// CMFCViewstatic GLfloat colors[12][3]= // Rainbow Of Colors
{
{1.0f,0.5f,0.5f},{1.0f,0.75f,0.5f},{1.0f,1.0f,0.5f},{0.75f,1.0f,0.5f},
{0.5f,1.0f,0.5f},{0.5f,1.0f,0.75f},{0.5f,1.0f,1.0f},{0.5f,0.75f,1.0f},
{0.5f,0.5f,1.0f},{0.75f,0.5f,1.0f},{1.0f,0.5f,1.0f},{1.0f,0.5f,0.75f}
};
float xspeed; // Base X Speed (To Allow Keyboard Direction Of Tail)
float yspeed;
int col;
IMPLEMENT_DYNCREATE(CMFCView, CView)BEGIN_MESSAGE_MAP(CMFCView, CView)
// 标准打印命令
ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
ON_WM_ERASEBKGND()
ON_WM_CREATE()
ON_WM_SIZE()
// ON_WM_MOVE()
ON_WM_LBUTTONDOWN()
ON_WM_LBUTTONUP()
ON_WM_MOUSEMOVE()
END_MESSAGE_MAP()// CMFCView 构造/析构CMFCView::CMFCView()
: m_pDC(NULL)
, MouseDownPoint(0)
, X_Angle(0)
, Y_Angle(0)
, pi(3.141592653)
, theta(0)
, slowdown(2)
, zoom(10)
, vx(0)
, vy(0)
, vz(15)
{
// TODO: 在此处添加构造代码}CMFCView::~CMFCView()
{
}BOOL CMFCView::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: 在此处通过修改 CREATESTRUCT cs 来修改窗口类或
// 样式 return CView::PreCreateWindow(cs);
}// CMFCView 绘制void CMFCView::OnDraw(CDC* )
{
CMFCDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
if (!pDoc)
return;

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear Screen And Depth Buffer
glMatrixMode(GL_MODELVIEW);
glLoadIdentity(); // gluLookAt(vx,vy,vz,0,0,0,0,1,0);
glRotatef(X_Angle,1,0,0);
glRotatef(Y_Angle,0,1,0);

   for (int i=0;i<MAXNUMBER;i++) // i Through All The Particles
{
if (pDoc->s[i].active) // If The Particle Is Active
{
float x=pDoc->s[i].x; // Grab Our Particle X Position
float y=pDoc->s[i].y; // Grab Our Particle Y Position
float z=pDoc->s[i].z+zoom; // Particle Z Pos + Zoom // Draw The Particle Using Our RGB Values, Fade The Particle Based On It's Life
glColor4f(pDoc->s[i].r,pDoc->s[i].g,pDoc->s[i].b,pDoc->s[i].life); glBegin(GL_TRIANGLE_STRIP); // Build Quad From A Triangle Strip
    glTexCoord2d(1,1); glVertex3f(x+0.5f,y+0.5f,z); // Top Right
glTexCoord2d(0,1); glVertex3f(x-0.5f,y+0.5f,z); // Top Left
glTexCoord2d(1,0); glVertex3f(x+0.5f,y-0.5f,z); // Bottom Right
glTexCoord2d(0,0); glVertex3f(x-0.5f,y-0.5f,z); // Bottom Left
glEnd(); // Done Building Triangle Strip pDoc->s[i].x+=pDoc->s[i].ax/(slowdown*1000);// Move On The X Axis By X Speed
pDoc->s[i].y+=pDoc->s[i].ay/(slowdown*1000);// Move On The Y Axis By Y Speed
pDoc->s[i].z+=pDoc->s[i].az/(slowdown*1000);// Move On The Z Axis By Z Speed pDoc->s[i].ax+=pDoc->s[i].gx; // Take Pull On X Axis Into Account
pDoc->s[i].ay+=pDoc->s[i].gy; // Take Pull On Y Axis Into Account
  pDoc->s[i].az+=pDoc->s[i].gz; // Take Pull On Z Axis Into Account
pDoc->s[i].life-=pDoc->s[i].fade; // Reduce Particles Life By 'Fade' if (pDoc->s[i].life<0.0f) // If Particle Is Burned Out
{
pDoc->s[i].life=1.0f; // Give It New Life
pDoc->s[i].fade=float(rand()%100)/1000.0f+0.003f; // Random Fade Value
pDoc->s[i].x=0.0f; // Center On X Axis
pDoc->s[i].y=0.0f; // Center On Y Axis
pDoc->s[i].z=0.0f; // Center On Z Axis
pDoc->s[i].ax=xspeed+float((rand()%60)-32.0f); // X Axis Speed And Direction
pDoc->s[i].ay=yspeed+float((rand()%60)-30.0f); // Y Axis Speed And Direction
pDoc->s[i].az=float((rand()%60)-30.0f); // Z Axis Speed And Direction
pDoc->s[i].r=colors[2][0]; // Select Red From Color Table
pDoc->s[i].g=colors[2][1]; // Select Green From Color Table
pDoc->s[i].b=colors[2][2]; // Select Blue From Color Table
}
}
} 
SwapBuffers(wglGetCurrentDC()); // TODO: 在此处为本机数据添加绘制代码
}
// CMFCView 打印BOOL CMFCView::OnPreparePrinting(CPrintInfo* pInfo)
{
// 默认准备
return DoPreparePrinting(pInfo);
}void CMFCView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: 打印前添加额外的初始化
}void CMFCView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: 打印后添加清除过程
}
// CMFCView 诊断#ifdef _DEBUG
void CMFCView::AssertValid() const
{
CView::AssertValid();
}void CMFCView::Dump(CDumpContext& dc) const
{
CView::Dump(dc);
}CMFCDoc* CMFCView::GetDocument() const // 非调试版本是内联的
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMFCDoc)));
return (CMFCDoc*)m_pDocument;
}
#endif //_DEBUG
// CMFCView 消息处理程序BOOL CMFCView::OnEraseBkgnd(CDC* pDC)
{
// TODO: 在此添加消息处理程序代码和/或调用默认值 return true;
}int CMFCView::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CView::OnCreate(lpCreateStruct) == -1)
return -1;
    init();
// TODO:  在此添加您专用的创建代码 return 0;
}void CMFCView::init(void)
{
PIXELFORMATDESCRIPTOR pfd;
int         n;
HGLRC       hrc; m_pDC = new CClientDC(this); ASSERT(m_pDC != NULL); if (!bSetupPixelFormat())
return;
    GLfloat light_position[] = { 0.0, 0.0, 1.0, 1.0 }; n = ::GetPixelFormat(m_pDC->GetSafeHdc());
::DescribePixelFormat(m_pDC->GetSafeHdc(),n,sizeof(pfd), &pfd);
hrc = wglCreateContext(m_pDC->GetSafeHdc());
wglMakeCurrent(m_pDC->GetSafeHdc(), hrc);
glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB|GLUT_DEPTH);
CMFCDoc* pDoc=GetDocument();
pDoc->init();
/* glLightfv(GL_LIGHT0, GL_POSITION, light_position);
glShadeModel(GL_SMOOTH);

glEnable(GL_DEPTH_TEST);
// glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_TEXTURE_2D);*/
}bool CMFCView::bSetupPixelFormat(void)
{
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 CMFCView::OnSize(UINT nType, int cx, int cy)
{
CView::OnSize(nType, cx, cy);
    int w=cx,
int h=cy;
glViewport(0,0,w,h); 
    glMatrixMode(GL_PROJECTION); 
    glLoadIdentity(); 
  //gluPerspective(45.0f,(GLfloat)w/(GLfloat)h,0.1f,200.0f);
gluPerspective(caculate(20,20),(float)w/(float)h,1,50);
glMatrixMode(GL_MODELVIEW);
    glLoadIdentity(); 
// TODO: 在此处添加消息处理程序代码
}double CMFCView::caculate(double s, double d)
{
double r,dd; 
    r=atan2(s/2,d)*2; 
    dd=(180*r)/2; 
    return dd; 
return 0;
}
void CMFCView::OnLButtonDown(UINT nFlags, CPoint point)
{
// TODO: 在此添加消息处理程序代码和/或调用默认值 MouseDownPoint=point;
SetCapture();
CView::OnLButtonDown(nFlags, point);}void CMFCView::OnLButtonUp(UINT nFlags, CPoint point)
{
// TODO: 在此添加消息处理程序代码和/或调用默认值
MouseDownPoint=CPoint(0,0);
ReleaseCapture();
CView::OnLButtonUp(nFlags, point);
}void CMFCView::OnMouseMove(UINT nFlags, CPoint point)
{
if (GetCapture()==this)  //返回值是与当前线程相关联的捕获窗口的句柄。如果当前线程里没有窗口捕获到鼠标，则返回NULL。
{
// 旋转对象一个步长
X_Angle+=double(point.y-MouseDownPoint.y);
Y_Angle+=double(point.x-MouseDownPoint.x);
// 更新场景
Invalidate(TRUE);
// 记下鼠标位置
MouseDownPoint=point;
};
CView::OnMouseMove(nFlags, point);
}

Answer 2

// 粒子系统MFCDoc.h :  CMFCDoc 类的接口
//
#pragma once
#define MAXNUMBER 50typedef struct star
{
bool active;
 float life;
 float fade;
 float r;
 float g;
 float b;
 float x;
 float y;
 float z;
 float ax;
 float ay;
 float az;
 float gx;
 float gy;
 float gz;
}stars;class CMFCDoc : public CDocument
{
protected: // 仅从序列化创建
CMFCDoc();
DECLARE_DYNCREATE(CMFCDoc)// 属性
public:

// 操作
public:// 重写
public:
virtual BOOL OnNewDocument();
virtual void Serialize(CArchive& ar);// 实现
public:
virtual ~CMFCDoc();
#ifdef _DEBUG
virtual void AssertValid() const;
virtual void Dump(CDumpContext& dc) const;
#endifprotected:// 生成的消息映射函数
protected:
DECLARE_MESSAGE_MAP()
public:
bool init(void);
stars s[MAXNUMBER];
AUX_RGBImageRec * LoadBMP(char* filename);
void LoadGLTextures(void);
GLuint texture;
};

Answer 3

数据定义在DOC类中，在DOC类里init()初始化粒子，
然后在VIEW类中的init()里调用DOC中的init()
然后在VIEW类中的ONDraw（）函数中对粒子系统进行绘画
结果却并没有出现粒子喷射的效果，而是粒子初始的静态画面。
要让他实现NEHE第19课的效果，应该怎么改？？？？？？？

Answer 4

要喷射的效果 是不是应该加上time的响应函数啊