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LiFengView.cpp
资源名称：虚拟地形建模.rar　[点击查看]
上传用户：dfjhuyju
上传日期：2013-03-13
资源大小：11035k
文件大小：8k
源码类别：

OpenGL

开发平台：

Visual C++

LiFengView.cpp：源码内容
  1. // LiFengView.cpp : implementation of the CLiFengView class
  2. //
  4. #include "stdafx.h"
  5. #include "LiFeng.h"
  7. #include "LiFengDoc.h"
  8. #include "LiFengView.h"
  10. #ifdef _DEBUG
  11. #define new DEBUG_NEW
  12. #undef THIS_FILE
  13. static char THIS_FILE[] = __FILE__;
  14. #endif
  16. /////////////////////////////////////////////////////////////////////////////
  17. // CLiFengView
  19. IMPLEMENT_DYNCREATE(CLiFengView, CView)
  21. BEGIN_MESSAGE_MAP(CLiFengView, CView)
  22. //{{AFX_MSG_MAP(CLiFengView)
  23. ON_WM_CREATE()
  24. ON_WM_DESTROY()
  25. ON_WM_SIZE()
  26. ON_WM_TIMER()
  27. ON_WM_LBUTTONDBLCLK()
  28. ON_WM_LBUTTONDOWN()
  29. ON_WM_LBUTTONUP()
  30. ON_WM_KEYDOWN()
  31. //}}AFX_MSG_MAP
  32. // Standard printing commands
  33. ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
  34. ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
  35. ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
  36. END_MESSAGE_MAP()
  38. /////////////////////////////////////////////////////////////////////////////
  39. // CLiFengView construction/destruction
  41. CLiFengView::CLiFengView()
  42. {
  45. }
  47. CLiFengView::~CLiFengView()
  48. {
  50. }
  52. BOOL CLiFengView::PreCreateWindow(CREATESTRUCT& cs)
  53. {
  54. // TODO: Modify the Window class or styles here by modifying
  55. //  the CREATESTRUCT cs
  57. return CView::PreCreateWindow(cs);
  58. }
  60. /////////////////////////////////////////////////////////////////////////////
  61. // CLiFengView drawing
  63. void CLiFengView::OnDraw(CDC* pDC)
  64. {
  65. CLiFengDoc* pDoc = GetDocument();
  67. CRect rect;
  68. GetClientRect(&rect);
  69. Win_Height=rect.bottom-rect.top;
  70. Win_Width=rect.right-rect.left;
  72. RenderScene();
  73. ASSERT_VALID(pDoc);
  74. // TODO: add draw code for native data here
  75. }
  77. /////////////////////////////////////////////////////////////////////////////
  78. // CLiFengView printing
  80. BOOL CLiFengView::OnPreparePrinting(CPrintInfo* pInfo)
  81. {
  82. // default preparation
  83. return DoPreparePrinting(pInfo);
  84. }
  86. void CLiFengView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
  87. {
  88. // TODO: add extra initialization before printing
  89. }
  91. void CLiFengView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
  92. {
  93. // TODO: add cleanup after printing
  94. }
  96. /////////////////////////////////////////////////////////////////////////////
  97. // CLiFengView diagnostics
  99. #ifdef _DEBUG
  100. void CLiFengView::AssertValid() const
  101. {
  102. CView::AssertValid();
  103. }
  105. void CLiFengView::Dump(CDumpContext& dc) const
  106. {
  107. CView::Dump(dc);
  108. }
  110. CLiFengDoc* CLiFengView::GetDocument() // non-debug version is inline
  111. {
  112. ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CLiFengDoc)));
  113. return (CLiFengDoc*)m_pDocument;
  114. }
  118. void CLiFengView::SetLogicalPalette(void)
  119. {
  120. struct
  121. {
  122. WORD Version;
  123. WORD NumberOfEntries;
  124. PALETTEENTRY aEntries[256];
  125. }logicalPalette = {0x300,256};
  127. BYTE reds[] = {0,36,72,109,145,182,218,255};
  128. BYTE greens[]={0,36,72,109,145,182,218,255};
  129. BYTE blues[]={0,85,170,255};
  132. for (int colorNum=0; colorNum<256; ++colorNum)
  133.     {
  134.         logicalPalette.aEntries[colorNum].peRed =
  135.             reds[colorNum & 0x07];
  136.         logicalPalette.aEntries[colorNum].peGreen =
  137.             greens[(colorNum >> 0x03) & 0x07];
  138.         logicalPalette.aEntries[colorNum].peBlue =
  139.             blues[(colorNum >> 0x06) & 0x03];
  140.         logicalPalette.aEntries[colorNum].peFlags = 0;
  141.     }
  143.     m_hPalette = CreatePalette ((LOGPALETTE*)&logicalPalette);
  144. }
  147. BOOL CLiFengView::InitializeOpenGL(CDC* pDC)
  148. {
  149. m_pDC = pDC;
  150. SetupPixelFormat();
  151. m_hrc = ::wglCreateContext(m_pDC->GetSafeHdc());
  152. ::wglMakeCurrent(m_pDC->GetSafeHdc(),m_hrc);
  154. InitScene();
  156. GLfloat light_ambient[] = {0.0, 0.0, 0.0, 1.0};
  157. GLfloat light_diffuse[] = {1.0, 1.0, 1.0, 1.0};
  158. GLfloat light_specular[] = {1.0, 1.0, 1.0, 1.0};
  159. GLfloat light_position[] = {2, 4.0, 2.0, 0.0};
  161. glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
  162. glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
  163. glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
  164. glLightfv(GL_LIGHT0, GL_POSITION, light_position);
  166. glEnable(GL_LIGHT0);
  168. glEnable(GL_LIGHTING);
  171. glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
  172. glHint(GL_POLYGON_SMOOTH_HINT,GL_NICEST ); 
  173. glDepthFunc(GL_LESS);
  174. glEnable(GL_DEPTH_TEST);
  175. glShadeModel(GL_SMOOTH);
  176. glEnable(GL_NORMALIZE);
  178. glEnable(GL_COLOR_MATERIAL);
  184. return TRUE;
  189. }
  192. BOOL CLiFengView::SetupPixelFormat()
  193. {
  194. PIXELFORMATDESCRIPTOR pfd = { 
  195.     sizeof(PIXELFORMATDESCRIPTOR),    // pfd结构的大小 
  196.     1,                                // 版本号 
  197.     PFD_DRAW_TO_WINDOW |              // 支持在窗口中绘图 
  198.     PFD_SUPPORT_OPENGL |              // 支持 OpenGL 
  199.     PFD_DOUBLEBUFFER,                 // 双缓存模式 
  200.     PFD_TYPE_RGBA,                    // RGBA 颜色模式 
  201.     36,                               // 24 位颜色深度 
  202.     0, 0, 0, 0, 0, 0,                 // 忽略颜色位 
  203.     0,                                // 没有非透明度缓存 
  204.     0,                                // 忽略移位位 
  205.     0,                                // 无累加缓存 
  206.     0, 0, 0, 0,                       // 忽略累加位 
  207.     24,                               // 32 位深度缓存     
  208.     0,                                // 无模板缓存 
  209.     0,                                // 无辅助缓存 
  210.     PFD_MAIN_PLANE,                   // 主层 
  211.     0,                                // 保留 
  212.     0, 0, 0                           // 忽略层,可见性和损毁掩模 
  213. }; 
  214. int pixelformat;
  215. pixelformat = ::ChoosePixelFormat(m_pDC->GetSafeHdc(), &pfd);//选择像素格式
  216. ::SetPixelFormat(m_pDC->GetSafeHdc(), pixelformat, &pfd); //设置像素格式
  217. if(pfd.dwFlags & PFD_NEED_PALETTE)
  218. SetLogicalPalette(); //设置逻辑调色板
  219. return TRUE;
  220. }
  223. BOOL CLiFengView::RenderScene()
  224. {
  225. wglMakeCurrent(m_pDC->GetSafeHdc(), m_hrc);
  226. glClearColor(0.0f,0.0f,0.0f,1.0f);
  227. glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  230. glPushMatrix();
  231. mycamera.Update(Win_Width,Win_Height,100);
  232. mycamera.Look();
  235. myskybox.DrawSkyBox();
  237. m_Dem.RenderDem();
  239. glPopMatrix();
  240. ::SwapBuffers(m_pDC->GetSafeHdc());
  241. return TRUE;
  242. }
  243. #endif //_DEBUG
  245. /////////////////////////////////////////////////////////////////////////////
  246. // CLiFengView message handlers
  248. int CLiFengView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
  249. {
  250. if (CView::OnCreate(lpCreateStruct) == -1)
  251. return -1;
  252. m_pDC = new CClientDC(this);
  253. SetTimer(1,20,NULL);
  254. InitializeOpenGL(m_pDC);
  257. return 0;
  258. }
  260. void CLiFengView::OnDestroy() 
  261. {
  262. CView::OnDestroy();
  263. ::wglMakeCurrent(0,0);
  264. ::wglDeleteContext(m_hrc);
  265. if(m_hPalette)
  266. {
  267. DeleteObject(m_hPalette);
  268. }
  269. if(m_pDC)
  270. {
  271. delete m_pDC;
  272. }
  274. KillTimer(1);
  276. }
  278. void CLiFengView::OnSize(UINT nType, int cx, int cy) 
  279. {
  280. glMatrixMode(GL_PROJECTION);  
  281. glLoadIdentity();
  282. gluPerspective(40.0,(GLdouble)cx/(GLdouble)cy,2,20000000.0);
  283. glMatrixMode(GL_MODELVIEW);
  284. glLoadIdentity();
  286. glViewport(0,0,cx,cy);
  289. CView::OnSize(nType, cx, cy);
  292. }
  294. void CLiFengView::OnTimer(UINT nIDEvent) 
  295. {
  296. Invalidate(FALSE);
  298. CView::OnTimer(nIDEvent);
  299. }
  301. void CLiFengView::OnLButtonDblClk(UINT nFlags, CPoint point) 
  302. {
  303. // TODO: Add your message handler code here and/or call default
  305. CView::OnLButtonDblClk(nFlags, point);
  306. }
  308. void CLiFengView::OnLButtonDown(UINT nFlags, CPoint point) 
  309. {
  310. // TODO: Add your message handler code here and/or call default
  311. mycamera.Role_Flag = true;
  313. CView::OnLButtonDown(nFlags, point);
  314. }
  316. void CLiFengView::OnLButtonUp(UINT nFlags, CPoint point) 
  317. {
  318. mycamera.Role_Flag = false;
  319. CView::OnLButtonUp(nFlags, point);
  320. }
  322. void CLiFengView::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags) 
  323. {
  324. switch (nChar)
  325. {
  326.    
  327.     case VK_ESCAPE: exit(0); //退出程序
  328. break;
  329. default:
  330. break;
  331. }
  333. CView::OnKeyDown(nChar, nRepCnt, nFlags);
  334. }
  337. void CLiFengView::InitScene()
  338. {
  340. BOOL t_Blend=false;
  342. m_Dem.ReadDem("terrain/085008.dem");
  343. m_Dem.CreateCompileList();
  345. float eyex;
  346. float eyey;
  347. float eyez;
  349. m_Dem.SetViewPosition(&eyex, &eyey, &eyez);
  351. mycamera.PositionCamera(eyex, eyey + 500, eyez, eyex, eyey, eyez + 10000, 0, 1, 0);
  352. myskybox.InitSkyBox(50000, 50000, 50000, eyex, eyey - 5000, eyez);
  354. }