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DialogGLDlg.cpp
资源名称：《OpenGL三维图形系统开发与实用技术》书的源码.rar　[点击查看]
上传用户：tengyuc
上传日期：2007-08-14
资源大小：722k
文件大小：12k
源码类别：

OpenGL

开发平台：

Visual C++

DialogGLDlg.cpp：源码内容
  1. // DialogGLDlg.cpp : implementation file
  2. //
  4. #include "stdafx.h"
  5. #include "DialogGL.h"
  6. #include "DialogGLDlg.h"
  8. #include "math.h"
  9. #include "mmsystem.h"
  10. #include "resource.h"
  15. #ifdef _DEBUG
  16. #define new DEBUG_NEW
  17. #undef THIS_FILE
  18. static char THIS_FILE[] = __FILE__;
  19. #endif
  21. /////////////////////////////////////////////////////////////////////////////
  22. // CAboutDlg dialog used for App About
  24. class CAboutDlg : public CDialog
  25. {
  26. public:
  27. CAboutDlg();
  29. // Dialog Data
  30. //{{AFX_DATA(CAboutDlg)
  31. enum { IDD = IDD_ABOUTBOX };
  32. //}}AFX_DATA
  34. // ClassWizard generated virtual function overrides
  35. //{{AFX_VIRTUAL(CAboutDlg)
  36. protected:
  37. virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
  38. //}}AFX_VIRTUAL
  40. // Implementation
  41. protected:
  42. //{{AFX_MSG(CAboutDlg)
  43. //}}AFX_MSG
  44. DECLARE_MESSAGE_MAP()
  45. };
  47. CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
  48. {
  49. //{{AFX_DATA_INIT(CAboutDlg)
  50. //}}AFX_DATA_INIT
  51. }
  53. void CAboutDlg::DoDataExchange(CDataExchange* pDX)
  54. {
  55. CDialog::DoDataExchange(pDX);
  56. //{{AFX_DATA_MAP(CAboutDlg)
  57. //}}AFX_DATA_MAP
  58. }
  60. BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
  61. //{{AFX_MSG_MAP(CAboutDlg)
  62. //}}AFX_MSG_MAP
  63. END_MESSAGE_MAP()
  65. /////////////////////////////////////////////////////////////////////////////
  66. // CDialogGLDlg dialog
  68. CDialogGLDlg::CDialogGLDlg(CWnd* pParent /*=NULL*/)
  69. : CDialog(CDialogGLDlg::IDD, pParent)
  70. {
  71. //{{AFX_DATA_INIT(CDialogGLDlg)
  72. // NOTE: the ClassWizard will add member initialization here
  73. //}}AFX_DATA_INIT
  74. // Note that LoadIcon does not require a subsequent DestroyIcon in Win32
  75. m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
  78. m_hGLContext = NULL;
  79. m_GLPixelIndex = 0;
  82. m_xRotate = 0;
  83. m_yRotate = 0;
  84. m_Rotate = FALSE;
  86. m_ScaleX = 1.0f;
  87. m_ScaleY = 1.0f;
  88. m_ScaleZ = 1.0f;
  90. m_size = 1.5;
  91. m_exp = 9;
  93. m_RightButtonDown = FALSE;
  94. m_LeftButtonDown = FALSE;
  96. m_Antialias  = TRUE;
  98. }
  100. void CDialogGLDlg::DoDataExchange(CDataExchange* pDX)
  101. {
  102. CDialog::DoDataExchange(pDX);
  103. //{{AFX_DATA_MAP(CDialogGLDlg)
  104. // NOTE: the ClassWizard will add DDX and DDV calls here
  105. //}}AFX_DATA_MAP
  106. }
  108. BEGIN_MESSAGE_MAP(CDialogGLDlg, CDialog)
  109. ON_WM_CONTEXTMENU()
  110. //{{AFX_MSG_MAP(CDialogGLDlg)
  111. ON_WM_SYSCOMMAND()
  112. ON_WM_PAINT()
  113. ON_WM_QUERYDRAGICON()
  114. ON_WM_CREATE()
  115. ON_WM_DESTROY()
  116. ON_WM_SIZE()
  117. ON_WM_LBUTTONDOWN()
  118. ON_WM_LBUTTONUP()
  119. ON_WM_MOUSEMOVE()
  120. ON_WM_TIMER()
  121. ON_COMMAND(ID_POPUP_ROTATE, OnPopupRotate)
  122. ON_COMMAND(ID_POPUP_SIZE_DECREASE, OnPopupSizeDecrease)
  123. ON_COMMAND(ID_POPUP_SIZE_INCREASE, OnPopupSizeIncrease)
  124. ON_WM_KEYDOWN()
  125. ON_COMMAND(ID_POPUP_ANTIALIASING, OnPopupAntialiasing)
  126. //}}AFX_MSG_MAP
  127. END_MESSAGE_MAP()
  129. /////////////////////////////////////////////////////////////////////////////
  130. // CDialogGLDlg message handlers
  132. BOOL CDialogGLDlg::OnInitDialog()
  133. {
  134. CDialog::OnInitDialog();
  136. // Add "About..." menu item to system menu.
  138. // IDM_ABOUTBOX must be in the system command range.
  139. ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
  140. ASSERT(IDM_ABOUTBOX < 0xF000);
  142. CMenu* pSysMenu = GetSystemMenu(FALSE);
  143. if (pSysMenu != NULL)
  144. {
  145. CString strAboutMenu;
  146. strAboutMenu.LoadString(IDS_ABOUTBOX);
  147. if (!strAboutMenu.IsEmpty())
  148. {
  149. pSysMenu->AppendMenu(MF_SEPARATOR);
  150. pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
  151. }
  152. }
  154. // Set the icon for this dialog.  The framework does this automatically
  155. //  when the application's main window is not a dialog
  156. SetIcon(m_hIcon, TRUE); // Set big icon
  157. SetIcon(m_hIcon, FALSE); // Set small icon
  159. // TODO: Add extra initialization here
  161. return TRUE;  // return TRUE  unless you set the focus to a control
  162. }
  164. void CDialogGLDlg::OnSysCommand(UINT nID, LPARAM lParam)
  165. {
  166. if ((nID & 0xFFF0) == IDM_ABOUTBOX)
  167. {
  168. CAboutDlg dlgAbout;
  169. dlgAbout.DoModal();
  170. }
  171. else
  172. {
  173. CDialog::OnSysCommand(nID, lParam);
  174. }
  175. }
  177. // If you add a minimize button to your dialog, you will need the code below
  178. //  to draw the icon.  For MFC applications using the document/view model,
  179. //  this is automatically done for you by the framework.
  181. void CDialogGLDlg::OnPaint() 
  182. {
  183. if (IsIconic())
  184. {
  185. CPaintDC dc(this); // device context for painting
  187. SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
  189. // Center icon in client rectangle
  190. int cxIcon = GetSystemMetrics(SM_CXICON);
  191. int cyIcon = GetSystemMetrics(SM_CYICON);
  192. CRect rect;
  193. GetClientRect(&rect);
  194. int x = (rect.Width() - cxIcon + 1) / 2;
  195. int y = (rect.Height() - cyIcon + 1) / 2;
  197. // Draw the icon
  198. dc.DrawIcon(x, y, m_hIcon);
  199. }
  200. else
  201. {
  202. CPaintDC dc(this); // device context for painting
  203. RenderScene();
  204. SwapBuffers(dc.m_ps.hdc);
  205. CDialog::OnPaint();
  207. }
  208. }
  210. // The system calls this to obtain the cursor to display while the user drags
  211. //  the minimized window.
  212. HCURSOR CDialogGLDlg::OnQueryDragIcon()
  213. {
  214. return (HCURSOR) m_hIcon;
  215. }
  218. BOOL CDialogGLDlg::SetWindowPixelFormat(HDC hDC)
  219. {
  220. PIXELFORMATDESCRIPTOR pixelDesc = { 
  221.     sizeof(PIXELFORMATDESCRIPTOR),    // pfd结构的大小 
  222.     1,                                // 版本号 
  223.     PFD_DRAW_TO_WINDOW |              // 支持在窗口中绘图 
  224.     PFD_SUPPORT_OPENGL |              // 支持 OpenGL 
  225.     PFD_DOUBLEBUFFER,                 // 双缓存模式 
  226.     PFD_TYPE_RGBA,                    // RGBA 颜色模式 
  227.     24,                               // 24 位颜色深度 
  228.     0, 0, 0, 0, 0, 0,                 // 忽略颜色位 
  229.     0,                                // 没有非透明度缓存 
  230.     0,                                // 忽略移位位 
  231.     0,                                // 无累加缓存 
  232.     0, 0, 0, 0,                       // 忽略累加位 
  233.     32,                               // 32 位深度缓存     
  234.     0,                                // 无模板缓存 
  235.     0,                                // 无辅助缓存 
  236.     PFD_MAIN_PLANE,                   // 主层 
  237.     0,                                // 保留 
  238.     0, 0, 0                           // 忽略层,可见性和损毁掩模 
  239. }; 
  241. m_GLPixelIndex = ChoosePixelFormat(hDC,&pixelDesc);
  242. if(m_GLPixelIndex==0) 
  243. {
  244. m_GLPixelIndex = 1;
  245. if(DescribePixelFormat(hDC,m_GLPixelIndex,
  246. sizeof(PIXELFORMATDESCRIPTOR),&pixelDesc)==0)
  247. {
  248. return FALSE;
  249. }
  250. }
  252. if(SetPixelFormat(hDC,m_GLPixelIndex,&pixelDesc)==FALSE)
  253. {
  254. return FALSE;
  255. }
  257. return TRUE;
  258. }
  261. BOOL CDialogGLDlg::CreateViewGLContext(HDC hDC)
  262. {
  263. m_hGLContext = wglCreateContext(hDC);
  265. if(m_hGLContext==NULL)
  266. return FALSE;
  268. if(wglMakeCurrent(hDC,m_hGLContext)==FALSE)
  269. return FALSE;
  273. return TRUE;
  274. }
  278. int CDialogGLDlg::OnCreate(LPCREATESTRUCT lpCreateStruct) 
  279. {
  280. if (CDialog::OnCreate(lpCreateStruct) == -1)
  281. return -1;
  283. HWND hWnd = GetSafeHwnd();
  284. HDC hDC = ::GetDC(hWnd);
  286. if(SetWindowPixelFormat(hDC)==FALSE)
  287. return 0;
  289. if(CreateViewGLContext(hDC)==FALSE)
  290. return 0;
  292. glClearColor(0.0,0.0,0.0,1.0);
  293. glPolygonMode(GL_FRONT,GL_LINE);
  294. glPolygonMode(GL_BACK,GL_LINE);
  295. // 反走样操作
  296. glEnable(GL_LINE_SMOOTH);
  297. glEnable(GL_BLEND);
  298. glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
  299. glHint(GL_LINE_SMOOTH_HINT,GL_NICEST);
  300. glLineWidth(1.5);
  301. BuildList();
  302. SetTimer(0,10,NULL);
  303. return 0;
  304. }
  307. void CDialogGLDlg::OnDestroy() 
  308. {
  310. CDialog::OnDestroy();
  312. if(wglGetCurrentContext() != NULL)
  313. wglMakeCurrent(NULL,NULL);
  315. if(m_hGLContext != NULL)
  316. {
  317. wglDeleteContext(m_hGLContext);
  318. m_hGLContext = NULL;
  319. }
  321. }
  323. void CDialogGLDlg::OnSize(UINT nType, int cx, int cy) 
  324. {
  325. CDialog::OnSize(nType, cx, cy);
  327. GLsizei width,height;
  328. GLdouble aspect;
  330. width = cx;
  331. height = cy;
  333. if(cy==0)
  334. aspect = (GLdouble)width;
  335. else
  336. aspect = (GLdouble)width/(GLdouble)height;
  338. glViewport(0,0,width,height);
  339. glMatrixMode(GL_PROJECTION);
  340. glLoadIdentity();
  341. gluPerspective(45,aspect,1,100.0);
  342. glMatrixMode(GL_MODELVIEW);
  343. glLoadIdentity();
  345. glDrawBuffer(GL_BACK);
  347. glEnable(GL_DEPTH_TEST);
  349. }
  351. void CDialogGLDlg::RenderScene()
  352. {
  353. glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  354. glPushMatrix();
  355. glTranslated(0.0,0.0,-8.0);
  356. glRotated(m_xRotate, 1.0, 0.0, 0.0);
  357. glRotated(m_yRotate, 0.0, 1.0, 0.0);
  358. glScalef(m_ScaleX,m_ScaleY,m_ScaleZ);
  359.   
  360. ::glCallList(1);
  361. glPopMatrix();
  362. }
  364. void CDialogGLDlg::OnLButtonDown(UINT nFlags, CPoint point) 
  365. {
  366. m_LeftButtonDown = TRUE;
  367. m_LeftDownPos = point;
  368. KillTimer(0);
  369. CDialog::OnLButtonDown(nFlags, point);
  370. }
  372. void CDialogGLDlg::OnLButtonUp(UINT nFlags, CPoint point) 
  373. {
  374. m_LeftButtonDown = FALSE;
  376. CDialog::OnLButtonUp(nFlags, point);
  377. }
  379. void CDialogGLDlg::OnMouseMove(UINT nFlags, CPoint point) 
  380. {
  381. if(m_LeftButtonDown)
  382. {
  383. CSize rotate = m_LeftDownPos - point;
  384. m_LeftDownPos = point;
  385. m_yRotate -= rotate.cx;
  386. m_xRotate -= rotate.cy;
  387. InvalidateRect(NULL,FALSE);
  388. }
  390. CDialog::OnMouseMove(nFlags, point);
  391. }
  393. void CDialogGLDlg::OnContextMenu(CWnd*, CPoint point)
  394. {
  395. if (point.x == -1 && point.y == -1)
  396. { CRect rect; GetClientRect(rect); ClientToScreen(rect); point = rect.TopLeft(); point.Offset(5, 5); } CMenu menu; VERIFY(menu.LoadMenu(CG_IDR_POPUP_DIALOG_GLDLG)); CMenu* pPopup = menu.GetSubMenu(0); ASSERT(pPopup != NULL); CWnd* pWndPopupOwner = this; while (pWndPopupOwner->GetStyle() & WS_CHILD) pWndPopupOwner = pWndPopupOwner->GetParent(); pPopup->TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON, point.x, point.y, pWndPopupOwner); }
  399. void CDialogGLDlg::Rotate()
  400. {
  401. m_yRotate -= 2;
  402. InvalidateRect(NULL,FALSE);
  403. }
  405. void CDialogGLDlg::OnTimer(UINT nIDEvent) 
  406. {
  407. m_yRotate -= 3;
  408. m_xRotate -= 2;
  409. InvalidateRect(NULL,FALSE);
  410. CDialog::OnTimer(nIDEvent);
  411. }
  413. void CDialogGLDlg::OnPopupRotate() 
  414. {
  415. SetTimer(0,10,NULL);
  416. }
  418. void CDialogGLDlg::OnPopupSizeDecrease() 
  419. {
  420. m_ScaleX /= 1.1f;
  421. m_ScaleY /= 1.1f;
  422. m_ScaleZ /= 1.1f;
  423. InvalidateRect(NULL,FALSE);
  424. }
  426. void CDialogGLDlg::OnPopupSizeIncrease() 
  427. {
  428. m_ScaleX *= 1.1f;
  429. m_ScaleY *= 1.1f;
  430. m_ScaleZ *= 1.1f;
  431. InvalidateRect(NULL,FALSE);
  432. }
  434. //  创建显示列表
  435. void CDialogGLDlg::BuildList()
  436. {
  437. ::glNewList(1,GL_COMPILE_AND_EXECUTE);
  439.     glShadeModel(GL_SMOOTH);
  441.     glColor3ub(255,255,255);
  443. float x = m_size;
  444. float xt = 5.0f;
  446. glBegin(GL_POLYGON);
  447. glVertex3d( x,  x, x);
  448. glVertex3d( x, -x, x);
  449. glVertex3d(-x, -x, x);
  450. glVertex3d(-x,  x, x);
  451. glEnd();
  453. glBegin(GL_POLYGON);
  454. glVertex3d(-x,  x, -x);
  455. glVertex3d(-x, -x, -x);
  456. glVertex3d( x, -x, -x);
  457. glVertex3d( x,  x, -x);
  458. glEnd();
  460. glBegin(GL_POLYGON);
  461. glVertex3d( x,  x,  x);
  462. glVertex3d( x,  x, -x);
  463. glVertex3d( x, -x, -x);
  464. glVertex3d( x, -x,  x);
  465. glEnd();
  467. glBegin(GL_POLYGON);
  468. glVertex3d(-x,  x,  x);
  469. glVertex3d(-x,  x, -x);
  470. glVertex3d(-x, -x, -x);
  471. glVertex3d(-x, -x,  x);
  472. glEnd();
  474. glBegin(GL_POLYGON);
  475. glVertex3d(-x, -x,  x);
  476. glVertex3d( x, -x,  x);
  477. glVertex3d( x, -x, -x);
  478. glVertex3d(-x, -x, -x);
  479. glEnd();
  482. glBegin(GL_POLYGON);
  483. glVertex3d(-x,  x,  x);
  484. glVertex3d( x,  x,  x);
  485. glVertex3d( x,  x, -x);
  486. glVertex3d(-x,  x, -x);
  487. glEnd();
  489. ::glEndList();
  490. }
  492. void CDialogGLDlg::OnKeyDown(UINT nChar,UINT nRepCnt,UINT nFlags) 
  493. {
  494. switch(nChar)
  495. {
  496. case VK_ADD:
  497. m_ScaleX *= 1.1f;
  498. m_ScaleY *= 1.1f;
  499. m_ScaleZ *= 1.1f;
  500. InvalidateRect(NULL,FALSE);
  501. break;
  502. case VK_SUBTRACT:
  503. m_ScaleX /= 1.1f;
  504. m_ScaleY /= 1.1f;
  505. m_ScaleZ /= 1.1f;
  506. InvalidateRect(NULL,FALSE);
  507. break;
  508. default :
  509. {}
  511. }
  512. CDialog::OnKeyDown(nChar, nRepCnt, nFlags);
  513. }
  515. void CDialogGLDlg::OnPopupAntialiasing() 
  516. {
  517. m_Antialias = !m_Antialias;
  519. if(m_Antialias)
  520. {
  521. glEnable(GL_LINE_SMOOTH);
  522. glEnable(GL_BLEND);
  523. glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
  524. glHint(GL_LINE_SMOOTH_HINT,GL_NICEST);
  525. glLineWidth(10);
  526. }
  527. else
  528. {
  529. glDisable(GL_LINE_SMOOTH);
  530. glDisable(GL_BLEND);
  531. glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
  532. glHint(GL_LINE_SMOOTH_HINT,GL_NICEST);
  533. glLineWidth(10);
  534. }
  535. InvalidateRect(NULL,FALSE); 
  536. }