www.pudn.com > lesson6.rar > lesson1View.cpp
// lesson1View.cpp : implementation of the CLesson1View class
//
#include "stdafx.h"
#include "lesson1.h"
#include "lesson1Doc.h"
#include "lesson1View.h"
#include "gl\gl.h"
#include "gl\glu.h"
#include "gl\glaux.h"
#include "gl\glut.h"
#include "POINTchoice.h"
#include"TEAPOT2.h"
#include "math.h"
GLuint texture[1];// 存储一个纹理
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
extern int size1;
extern double m_r,m_g,m_b;
extern int new_width,new_height;
/////////////////////////////////////////////////////////////////////////////
// CLesson1View
IMPLEMENT_DYNCREATE(CLesson1View, CView)
BEGIN_MESSAGE_MAP(CLesson1View, CView)
//{{AFX_MSG_MAP(CLesson1View)
ON_WM_CREATE()
ON_WM_DESTROY()
ON_WM_SIZE()
ON_COMMAND(ID_POINT_DISPLAY, OnPointDisplay)
ON_WM_LBUTTONDOWN()
ON_COMMAND(ID_LIGHT_DIPLAY, OnLightDiplay)
ON_COMMAND(ID_IMAGE_DISPLAY, OnImageDisplay)
ON_COMMAND(ID_GLOBE, OnGlobe)
//}}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()
/////////////////////////////////////////////////////////////////////////////
// CLesson1View construction/destruction
CLesson1View::CLesson1View()
{
// TODO: add construction code here
}
CLesson1View::~CLesson1View()
{
}
BOOL CLesson1View::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: Modify the Window class or styles here by modifying
// the CREATESTRUCT cs
cs.style |= WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
return CView::PreCreateWindow(cs);
}
/////////////////////////////////////////////////////////////////////////////
// CLesson1View drawing
void CLesson1View::OnDraw(CDC* pDC)
{
CLesson1Doc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
COLORREF color;
DrawSceneinit();
/* color=RGB(0,0,255);//显示字体为蓝色
m_pDC->SetTextColor(color);
m_pDC->TextOut(100,100,"这是第一次作业!"); */
// drawpoint();
}
/////////////////////////////////////////////////////////////////////////////
// CLesson1View printing
BOOL CLesson1View::OnPreparePrinting(CPrintInfo* pInfo)
{
// default preparation
return DoPreparePrinting(pInfo);
}
void CLesson1View::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add extra initialization before printing
}
void CLesson1View::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add cleanup after printing
}
/////////////////////////////////////////////////////////////////////////////
// CLesson1View diagnostics
#ifdef _DEBUG
void CLesson1View::AssertValid() const
{
CView::AssertValid();
}
void CLesson1View::Dump(CDumpContext& dc) const
{
CView::Dump(dc);
}
CLesson1Doc* CLesson1View::GetDocument() // non-debug version is inline
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CLesson1Doc)));
return (CLesson1Doc*)m_pDocument;
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CLesson1View message handlers
void CLesson1View::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);
glClearDepth(1.0f);
glEnable(GL_DEPTH_TEST);
}
int CLesson1View::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CView::OnCreate(lpCreateStruct) == -1)
return -1;
// TODO: Add your specialized creation code here
init(); // 初始化OpenGL
return 0;
}
void CLesson1View::OnDestroy()
{
// TODO: Add your message handler code here
HGLRC hrc;
hrc = ::wglGetCurrentContext();
::wglMakeCurrent(NULL, NULL);
if (hrc)
::wglDeleteContext(hrc);
if (m_pDC)
delete m_pDC;
//add up
CView::OnDestroy();
}
void CLesson1View::OnSize(UINT nType, int cx, int cy)
{
CView::OnSize(nType, cx, cy);
//add down
int w=cx;
new_width=w;
int h=cy;
new_height=h;
GLfloat nRange=1.0f;
//避免除数为0
if(h==0) h=1;
//设置视口与窗口匹配
glViewport(0,0,w,h);
//重新设置坐标系统
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
//建立正交变换下的剪切体
if(wGetSafeHdc(), &pfd)) == 0 )
{
MessageBox("ChoosePixelFormat failed");
return FALSE;
}
//设置最匹配的像素格式为当前的像素格式
if (SetPixelFormat(m_pDC->GetSafeHdc(), pixelformat, &pfd) == FALSE)
{
MessageBox("SetPixelFormat failed");
return FALSE;
}
return TRUE;
}
void CLesson1View::DrawSceneinit()
{
//设置清屏颜色为白色
glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//必须要加的矩阵堆栈函数，和glPopMatrix()相对应，具体内容请见下一章
glPushMatrix();
glPopMatrix();
glFinish();
SwapBuffers(wglGetCurrentDC());
}
void CLesson1View::drawpoint()
{//设置清屏颜色为黑色
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
//清除颜色缓冲区和深度缓冲区
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//必须要加的矩阵堆栈函数，和glPopMatrix()相对应，具体内容请见下一章
glPushMatrix();
//设置点的大小
glPointSize(12.0);
//说明几何图元为“点” ，和glEnd()相对应。
glBegin(GL_POINTS);
//绘制红色的点
glColor3f(1.0,0.0,0.0);
glVertex3f(-0.7,-0.7,0.0);
//绘制绿色的点
glColor3f(0.0,1.0,0.0);
glVertex3f(0.7,-0.7,0.0);
//绘制白色的点
glColor3f(1.0,1.0,1.0);
glVertex3f(0.0,0.0,0.0);
glEnd();
glPointSize(32.0);
glBegin(GL_POINTS);
//绘制蓝色的点
glColor3f(0.0,0.0,1.0);
glVertex3f(0.7,0.7,0.0);
//绘制绿色的点
glColor3f(0.0,1.0,0.0);
glVertex3f(-0.7,0.7,0.0);
glEnd();
glPopMatrix();
glFinish();
SwapBuffers(wglGetCurrentDC());
}
void CLesson1View::OnPointDisplay()
{
// TODO: Add your command handler code here
drawpoint();
}
void CLesson1View::OnLButtonDown(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
double pointx;
double pointy;
if (new_width>=new_height)
{
pointx=(2*(float)point.x-(float)new_width)/(float)new_height;
pointy=(-1.0)*(2*(float)point.y-(float)new_height)/(float)new_height;
}
else
{
pointx=(2*(float)point.x-(float)new_width)/(float)new_width;
pointy=(-1.0)*(2*(float)point.y-(float)new_height)/(float)new_width;
}
//必须要加的矩阵堆栈函数，和glPopMatrix()相对应，具体内容请见下一章
glPushMatrix();
//设置点的大小
// size1=2;
glPointSize(size1);
//glColor3f(0,0,0);
glColor3f(m_r/255.0,m_g/255.0,m_b/255.0);
glBegin(GL_POINTS);
glVertex3f(pointx,pointy,0.0);
glEnd();
glPopMatrix();
glFinish();
SwapBuffers(wglGetCurrentDC());
CView::OnLButtonDown(nFlags, point);
}
void CLesson1View::OnLightDiplay()
{
TEAPOT2 tea;
tea.m_Teasize =0.5;
if(tea.DoModal()==IDOK)
{
viewteasize=tea.m_Teasize;
teapotshow(tea.m_Teasize);
}
}
void CLesson1View::teapotshow(float teasize)
{
//设置清屏颜色为白色
glClearColor(1.0f, 1.0f, 1.0f, 0.0f);
//清除颜色缓冲区和深度缓冲区
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
//必须要加的矩阵堆栈函数，和glPopMatrix()相对应
glPushMatrix();
//首先定义一个材质，定义方法非常类似前面讲到的光源定义。
GLfloat mat_ambient[]={0.8,0.8,0.8,1.0};
//定义 紫色 的漫反射特性
GLfloat mat_diffuse[]={0.8,0.0,0.8,1.0};
//定义 亮紫色 的镜面反射特性
GLfloat mat_specular[]={1.0,0.0,1.0,1.0};
//定义镜面反射的光亮度
GLfloat mat_shininess[]={50.0};
//将以上材质定义应用
glMaterialfv(GL_FRONT,GL_AMBIENT,mat_ambient);
glMaterialfv(GL_FRONT,GL_DIFFUSE,mat_diffuse);
glMaterialfv(GL_FRONT,GL_SPECULAR,mat_specular);
glMaterialfv(GL_FRONT,GL_SHININESS,mat_shininess);
//这里我们简化光源，以显示材质的效果。
//这里我们只指定光源位置，其他默认：白色光源。
//你也可以加入光源的定义，看看光源和材质的合成的效果
//正是因为它们能够合成，才能产生比真实生活中多的多的效果，这也正是
//3D技术吸引人的魅力所在。
GLfloat light_position[]={1.0,1.0,1.0,0.0};
glLightfv(GL_LIGHT0,GL_POSITION,light_position);
// GLfloat light_diffuse[]={0.0,0.0,1.0,1.0};
// glLightfv(GL_LIGHT0,GL_DIFFUSE,light_diffuse);
//将光源设置应用
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
// glEnable(GL_CULL_FACE);
glEnable(GL_AUTO_NORMAL);
glEnable(GL_NORMALIZE);
glFrontFace(GL_CW);
glCullFace(GL_BACK);
//glMaterialf(GL_FRONT,GL_SHININESS,64.0);
glShadeModel(GL_FLAT);
//着色消隐
//*******其实说白乐，这就是大名鼎鼎的 Z-BUFFER 呀************//
glDepthFunc(GL_LESS);//启动消影模式
glEnable(GL_DEPTH_TEST);
glRotatef(30.0,1.0,0.0,0.0);
//功能强大的辅助库函数：呵呵画出一个大茶壶。
glutSolidTeapot(teasize);
//auxSolidSphere(0.2);//球
glDisable(GL_CULL_FACE);
glDisable(GL_AUTO_NORMAL);
glDisable(GL_NORMALIZE);
glDisable(GL_LIGHT0);
glDisable(GL_DEPTH_TEST);
glPopMatrix();
glFinish();
SwapBuffers(wglGetCurrentDC());
glDisable(GL_LIGHTING);
}
void CLesson1View::OnImageDisplay()
{
// TODO: Add your command handler code here
//清屏，设置背景色为黑色
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
//清除缓冲区
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
// InitGL();//
// LoadGLTextures();
AUX_RGBImageRec *TextureImage[1];
memset(TextureImage,0,sizeof(void *)*1);
if (TextureImage[0]=auxDIBImageLoad("Nehe.bmp"))
{//取得一个目前没有被其它纹理使用的纹理id来标识这个纹理
//这里取得的textures[0] 就是一个可用的纹理id。
glGenTextures(1, &texture[0]);
// 绑定新的纹理进行设置（以后要使用这个纹理也是这样操作
glBindTexture(GL_TEXTURE_2D, texture[0]);
glTexImage2D(GL_TEXTURE_2D, 0, 3, TextureImage[0]->sizeX, TextureImage[0]->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);//设置重复纹理，即 不仅显示一个位图而是显示几个拷贝
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
//glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_MODULATE);
glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_DECAL);
}
/* if (TextureImage[0])
{
if (TextureImage[0]->data)
{
free(TextureImage[0]->data);
}
free(TextureImage[0]);
}*/
glEnable(GL_TEXTURE_2D);
glShadeModel(GL_SMOOTH); // 启用阴影平滑
glClearColor(0.0f, 0.0f, 0.0f, 0.5f);
//接下来的三行必须做的是关于深度缓存（depth buffer）的。
//将深度缓存设想为屏幕后面的层。深度缓存不断的对物体进入
//屏幕内部有多深进行跟踪。我们本节的程序其实没有真正使用深度缓存，
//但几乎所有在屏幕上显示3D场景OpenGL程序都使用深度缓存。它的排序决
//定那个物体先画。这样您就不会将一个圆形后面的正方形画到圆形上来。
//深度缓存是OpenGL十分重要的部分。
glClearDepth(1.0f); // 设置深度缓存
glEnable(GL_DEPTH_TEST); // 启用深度测试
glDepthFunc(GL_LEQUAL); // 所作深度测试的类型
//接着告诉OpenGL我们希望进行最好的透视修正。这会十分轻微的影响性能。但使得透视图看起来好一点
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);// 真正精细的透视修正
// glBindTexture(GL_TEXTURE_2D, texture[0]);
glLoadIdentity();
glRotatef(25,0.0,1.0,0.0);
glRotatef(25,1.0,0.0,0.0);
glColor3f(0.0,1.0,0.0);
glutSolidTeapot(0.5);
glPopMatrix();
glFinish();
SwapBuffers(wglGetCurrentDC());
glDisable(GL_TEXTURE_2D);
}
void CLesson1View::OnGlobe()
{
// TODO: Add your command handler code here
for(int i=0;i<272;i++)
{
glClearColor(0.0,0.0,0.0,0.0);////背景色清屏色
glClear(GL_COLOR_BUFFER_BIT);
/////////////
//不断变换视口来模仿各种运动曲线效果
/////////////
glPushMatrix();
glViewport(50+10*i,100+100*cos(double(i))-sin(i*1.0),50,50);
// glViewport(2*i,i*i*0.01,50,50); //模拟各种曲线
glColor3f(1.0,1.0,0.0);///实体球颜色
glTranslated(0.0,0.0,0.0);//
auxSolidSphere(0.4);///实体球
glPopMatrix();
glFlush();
Sleep(100);
glFinish();
SwapBuffers(wglGetCurrentDC());
}
//设置视口与窗口匹配
glViewport(0,0,new_width,new_height);
}