OpenGL.rar_opengl_opengl 体_opengl 贴图

// OpenGL.cpp: implementation of the COpenGL class. // ////////////////////////////////////////////////////////////////////// #include "OpenGL.h" ////////////////////////////////////////////////////////////////////// // Construction/Destruction ////////////////////////////////////////////////////////////////////// COpenGL::COpenGL() { m_x_res=GetSystemMetrics(SM_CXSCREEN); m_y_res=GetSystemMetrics(SM_CYSCREEN); m_bit_depth=16; m_tri_angle=7; m_quad_angle=0; } COpenGL::~COpenGL() { } void COpenGL::SceneInit() { int w,h; w=m_x_res; h=m_y_res; LoadTextures(); glEnable(GL_TEXTURE_2D); glShadeModel(GL_SMOOTH); glClearColor(0.0,0.0,0.0,0.5); glClearDepth(1.0F); glEnable(GL_DEPTH_TEST); glDepthFunc(GL_LEQUAL); glHint(GL_PERSPECTIVE_CORRECTION_HINT,GL_NICEST); } void COpenGL::SceneResizeViewport() { int w,h; GetClientRect(m_h_wnd,&m_rect); w=m_rect.right-m_rect.left; h=m_rect.bottom-m_rect.top; if(!(w>0 && h>0)) { return; } m_aspect=(GLfloat)w/(GLfloat)h; glViewport(0,0,w,h); glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluPerspective(45.0f,m_aspect,0.1f,100.0f); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); } void COpenGL::EnableOpenGL() { int iFormat; PIXELFORMATDESCRIPTOR pfd; m_h_dc=GetDC(m_h_wnd); ZeroMemory(&pfd,sizeof(pfd)); pfd.nSize=sizeof(pfd); pfd.nVersion=1; pfd.dwFlags=PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER; pfd.iPixelType=PFD_TYPE_RGBA; pfd.iLayerType=PFD_MAIN_PLANE; pfd.cColorBits=16; pfd.cDepthBits=16; iFormat=ChoosePixelFormat(m_h_dc,&pfd); SetPixelFormat(m_h_dc,iFormat,&pfd); m_h_rc=wglCreateContext(m_h_dc); wglMakeCurrent(m_h_dc,m_h_rc); } void COpenGL::DisableOpenGL() { wglMakeCurrent(NULL,NULL); wglDeleteContext(m_h_rc); ReleaseDC(m_h_wnd,m_h_dc); } bool COpenGL::ChangeResolution() { int w,h,bitdepth; w=m_x_res; h=m_y_res; bitdepth=m_bit_depth; bool bRet; DEVMODE devMode; int modeSwitch; int closeMode=0; EnumDisplaySettings(NULL,closeMode,&devMode); devMode.dmBitsPerPel=bitdepth; devMode.dmPelsWidth=w; devMode.dmPelsHeight=h; devMode.dmFields=DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT; modeSwitch=ChangeDisplaySettings(&devMode,CDS_FULLSCREEN); if(modeSwitch==DISP_CHANGE_SUCCESSFUL) { bRet=true; } else { ChangeDisplaySettings(NULL,0); bRet=false; } return bRet; } void COpenGL::SetWindowParam(HWND hWnd, HINSTANCE hInstance,int w, int h, int bitdepth) { m_h_wnd=hWnd; m_h_instance=hInstance; m_x_res=w; m_y_res=h; m_bit_depth=bitdepth; } void COpenGL::SceneShow(GLvoid) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); DrawRectange_3d_picture(); } AUX_RGBImageRec* COpenGL::LoadBMP(char *filename) { FILE *file=NULL; if(!filename) { return NULL; } file=fopen(filename,"r"); if(file) { fclose(file); return auxDIBImageLoad(filename); } return NULL; } int COpenGL::LoadTextures() { int status=FALSE; AUX_RGBImageRec *TextureImage[1]; memset(TextureImage,0,sizeof(void*)*1);//初始化所要用的贴图空间 if(TextureImage[0]=LoadBMP("1.bmp")) { status=TRUE; glGenTextures(1,&m_texture[0]);//生成纹理贴图 glBindTexture(GL_TEXTURE_2D,m_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); } if(TextureImage[0]) { if(TextureImage[0]->data) { free(TextureImage[0]->data); } free(TextureImage[0]); } return status; } void COpenGL::DrawRectange_3d_picture() { glLoadIdentity(); glTranslatef(0.0f,0.0f,-5.0f); glRotatef(m_quad_angle,1.0f,1.0f,1.0f); m_quad_angle+=0.1; if(m_quad_angle>=360) { m_quad_angle=0; } glBindTexture(GL_TEXTURE_2D,m_texture[0]); glBegin(GL_QUADS); //前面 glTexCoord2f(0.0f,1.0f);glVertex3f(-1.0f , 1.0f,1.0f); glTexCoord2f(0.0f,0.0f);glVertex3f(-1.0f,-1.0f,1.0f); glTexCoord2f(1.0f,0.0f);glVertex3f(1.0f ,-1.0f,1.0f); glTexCoord2f(1.0f,1.0f);glVertex3f(1.0f ,1.0f,1.0f); //右面 glTexCoord2f(0.0f,1.0f);glVertex3f(1.0f,1.0f,1.0f); glTexCoord2f(0.0f,0.0f);glVertex3f(1.0f,-1.0f,1.0f); glTexCoord2f(1.0f,0.0f);glVertex3f(1.0f,-1.0f,-1.0f); glTexCoord2f(1.0f,1.0f);glVertex3f(1.0f,1.0f,-1.0f); //后面 glTexCoord2f(0.0f,1.0f);glVertex3f(1.0f,1.0f,-1.0f); glTexCoord2f(0.0f,0.0f);glVertex3f(1.0f,-1.0f,-1.0f); glTexCoord2f(1.0f,0.0f);glVertex3f(-1.0f,-1.0f,-1.0f); glTexCoord2f(1.0f,1.0f);glVertex3f(-1.0f,1.0f,-1.0f); //左面 glTexCoord2f(0.0f,1.0f);glVertex3f(-1.0f , 1.0f,-1.0f); glTexCoord2f(0.0f,0.0f);glVertex3f(-1.0f,-1.0f,-1.0f); glTexCoord2f(1.0f,0.0f);glVertex3f(-1.0f ,-1.0f,1.0f); glTexCoord2f(1.0f,1.0f);glVertex3f(-1.0f ,1.0f,1.0f); //上面 glTexCoord2f(0.0f,1.0f);glVertex3f(-1.0f , 1.0f,-1.0f); glTexCoord2f(0.0f,0.0f);glVertex3f(-1.0f,1.0f,1.0f); glTexCoord2f(1.0f,0.0f);glVertex3f(1.0f ,1.0f,1.0f); glTexCoord2f(1.0f,1.0f);glVertex3f(1.0f ,1.0f,-1.0f); //下面 glTexCoord2f(0.0f,1.0f);glVertex3f(-1.0f ,-1.0f,1.0f); glTexCoord2f(0.0f,0.0f);glVertex3f(-1.0f,-1.0f,-1.0f); glTexCoord2f(1.0f,0.0f);glVertex3f(1.0f ,-1.0f,-1.0f); glTexCoord2f(1.0f,1.0f);glVertex3f(1.0f ,-1.0f,1.0f); glEnd(); } \