gluLookAt与osg::matrix::makeLookAt

xuliezjq

我在程序中用gluLookAt()实现场景的旋转、缩放和平移，同时把其中的视点位置向量和观察点位置向量传递给osg中相机的视图矩阵对osg加载的模型进行相同的操作，用的是viewMatrix::makeLookAt()。结果发现两者的模型旋转,平移和缩放的比例不一致。求高手指点。。。

array

这可能需要考虑其他代码的影响，也许您需要提供更多的信息

xuliezjq

2# array

以下是我源码的主要部分，望各位指点一下到底是什么地方出问题了。。。

OSG初始化，加载模型函数（用sceneView）

1. 
   
2. void COSGFrame::InitSceneView(std::string filename)
   
3. {
   
4. m_root = new osg::Group;
   
5. fileName = filename;
   
6. sceneView->setDefaults();
   
7. sceneView->setComputeNearFarMode(osgUtil::CullVisitor::DO_NOT_COMPUTE_NEAR_FAR);
   
8. m_Model = osgDB::readNodeFile(fileName);
   
9. osgUtil::Optimizer optimizer;
   
10. optimizer.optimize(m_Model.get());
    
11. optimizer.reset();
    
12. osg::PositionAttitudeTransform* newModelPAT = new osg::PositionAttitudeTransform;
    
13. newModelPAT->addChild(m_Model.get());
    
14. newModelPAT->setPosition(osg::Vec3(0,-100,-10));
    
15. newModelPAT->setScale(osg::Vec3(1.0,1.0,1.0));
    
16. m_root->addChild(newModelPAT);
    
17. osg::ref_ptr<osg::Node> node = osgDB::readNodeFile("01.ive");
    
18. osg::PositionAttitudeTransform* pat = new osg::PositionAttitudeTransform;
    
19. pat->setPosition(osg::Vec3(-350.035,123.94,-10.000136811));
    
20. pat->setScale(osg::Vec3(0.5,0.5,0.5));
    
21. pat->addChild(node.get());
    
22. m_root->addChild(pat);
    
23. osg::PositionAttitudeTransform* pat1 = new osg::PositionAttitudeTransform;
    
24. pat1->setPosition(osg::Vec3(127.492,-59.3833,-10));
    
25. pat1->setScale(osg::Vec3(0.3,0.3,0.3));
    
26. pat1->addChild(m_Model.get());
    
27. m_root->addChild(pat1);
    
28. precipitationEffect = new osgParticle::PrecipitationEffect;
    
29. precipitationEffect->snow(0.5);
    
30. precipitationEffect->setParticleColor(osg::Vec4(1,1,1,1));
    
31. precipitationEffect->setWind(osg::Vec3(2,0,0));
    
32. //m_root->addChild(precipitationEffect.get());
    
33. sceneView->setSceneData(m_root.get());
    
34. viewMatrix.makeLookAt(eyePoint,center,osg::Vec3(0.0f,0.0f,1.0f));
    
35. }
    
36. 
    
37. void COSGFrame::OSG_Render_Frame()
    
38. {
    
39. //PreOSGRenderFrame(x,y,z);
    
40. sceneView->getCamera()->setClearMask(GL_DEPTH_BUFFER_BIT);
    
41. sceneView->setViewport(0,0,getWindowWidth(),getWindowHeight());
    
42. viewMatrix.makeLookAt(eyePoint,center,upDirection);
    
43. sceneView->setViewMatrix(viewMatrix);
    
44. 
    
45. sceneView->update();
    
46. sceneView->cull();
    
47. sceneView->draw();
    
48. //PostOSGRenderFrame();
    
49. //SwapBuffers(::GetDC(_hwnd));
    
50. }
    

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自定义的相机操作，主要是计算场景漫游时的视点位置、观察点位置的变化
只贴了旋转部分的

1. 
   
2. void CSelfCamera::rotateView(float angle, float X,float Y,float Z)
   
3. {
   
4. Vector3 newView;
   
5. 
   
6. Vector3 view = m_View - m_Position;
   
7. float cosTheta = (float)cos(angle);
   
8. float sinTheta = (float)sin(angle);
   
9. newView.x = (cosTheta + (1 - cosTheta) * X * X)   *   view.x;
   
10. newView.x += ((1 - cosTheta) * X * Y - Z * sinTheta) * view.y;
    
11. newView.x += ((1 - cosTheta) * X * Z + Y * sinTheta) * view.z;
    
12. newView.y  = ((1 - cosTheta) * X * Y + Z * sinTheta) * view.x;
    
13. newView.y += (cosTheta + (1 - cosTheta) * Y * Y)  * view.y;
    
14. newView.y += ((1 - cosTheta) * Y * Z - X * sinTheta) * view.z;
    
15. newView.z  = ((1 - cosTheta) * X * Z - Y * sinTheta) * view.x;
    
16. newView.z += ((1 - cosTheta) * Y * Z + X * sinTheta) * view.y;
    
17. newView.z += (cosTheta + (1 - cosTheta) * Z * Z)  * view.z;
    
18. m_View = m_Position + newView;
    
19. }
    
20. void CSelfCamera::setViewByMouse(CPoint oldPot,CPoint currPot)
    
21. {
    
22. CRect rect;
    
23. GetClientRect(m_windowHandle,rect);
    
24. CPoint mousePos;
    
25. int middleX = rect.Width()/2;
    
26. int middleY = rect.Height()/2;
    
27. float angleY = 0.0f;
    
28. float angleZ = 0.0f;
    
29. static float currentRotX = 0.0f;
    
30. if(currPot == oldPot)
    
31.   return;
    
32. angleY = (float)(( currPot.x - oldPot.x)) / 1000.0f;
    
33. angleZ = (float)(( currPot.y - oldPot.y)) / 1000.0f;
    
34. static float lastRotX = 0.0f;
    
35. lastRotX = currentRotX;
    
36. currentRotX += angleZ;
    
37. if (currentRotX > 1.0f)
    
38. {
    
39.   currentRotX = 1.0f;
    
40.   if (lastRotX != 1.0f)
    
41.   {
    
42.    Vector3 vAxis = m_View - m_Position;
    
43.    vAxis = vAxis.crossProduct(m_upVector);
    
44.    vAxis = vAxis.normalize();
    
45.    rotateView(1.0f - lastRotX,vAxis.x,vAxis.y,vAxis.z);
    
46.   }
    
47. }
    
48. else if (currentRotX < -1.0f)
    
49. {
    
50.   currentRotX = -1.0f;
    
51.   if (lastRotX != -1.0f)
    
52.   {
    
53.    Vector3 vAxis = m_View - m_Position;
    
54.    vAxis = vAxis.crossProduct(m_upVector);
    
55.    vAxis = vAxis.normalize();
    
56.    rotateView(-1.0f - lastRotX,vAxis.x,vAxis.y,vAxis.z);
    
57.   }
    
58. }
    
59. else
    
60. {
    
61.   Vector3 vAxis = m_View - m_Position;
    
62.   vAxis = vAxis.crossProduct(m_upVector);
    
63.   vAxis = vAxis.normalize();
    
64.   rotateView(angleZ,vAxis.x,vAxis.y,vAxis.z);
    
65. }
    
66. rotateView(angleY,0,1,0);
    
67. }
    

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以下是MFC程序的view类

1. 
   
2. int CosgSceneViewTestView::OnCreate(LPCREATESTRUCT lpCreateStruct)
   
3. {
   
4. if (CView::OnCreate(lpCreateStruct) == -1)
   
5.   return -1;
   
6. // TODO:  在此添加您专用的创建代码
   
7. Init();
   
8. m_osgFrame = new COSGFrame(m_hWnd);
   
9. m_selfCamera = new CSelfCamera(m_hWnd);
   
10. m_selfCamera->setCamera(0.0f,0.5f, -100.0f, 0.0f, 0.0f, 0.0f,0.0f, 1.0f, 0.0f);
    
11. m_osgFrame->eyePoint = OpenglToOsg(-(m_selfCamera->m_Position));
    
12. m_osgFrame->center = OpenglToOsg(m_selfCamera->m_View);
    
13. return 0;
    
14. }
    
15. void CosgSceneViewTestView::OnDestroy()
    
16. {
    
17. if (wglGetCurrentContext() != NULL)
    
18. {
    
19.   wglMakeCurrent(NULL,NULL);
    
20. }
    
21. if (m_hGLContext != NULL)
    
22. {
    
23.   wglDeleteContext(m_hGLContext);
    
24.   m_hGLContext = NULL;
    
25. }
    
26. CView::OnDestroy();
    
27. // TODO: 在此处添加消息处理程序代码
    
28. }
    
29. void CosgSceneViewTestView::OnPaint()
    
30. {
    
31. CPaintDC dc(this); // device context for painting
    
32. // TODO: 在此处添加消息处理程序代码
    
33. // 不为绘图消息调用 CView::OnPaint()
    
34. DrawGroundTexture();
    
35. DrawScene();
    
36. //SwapBuffers(dc.m_ps.hdc);
    
37. }
    
38. 
    
39. BOOL CosgSceneViewTestView::OnEraseBkgnd(CDC* pDC)
    
40. {
    
41. // TODO: 在此添加消息处理程序代码和/或调用默认值
    
42. //return CView::OnEraseBkgnd(pDC);
    
43. return TRUE;
    
44. }
    
45. void CosgSceneViewTestView::OnSize(UINT nType, int cx, int cy)
    
46. {
    
47. CView::OnSize(nType, cx, cy);
    
48. CSize size(cx,cy);
    
49. double aspect;
    
50. aspect = (cy == 0) ? (double)size.cx : (double)size.cx/(double)size.cy;
    
51. glViewport(0, 0, (GLsizei) cx, (GLsizei) cy);
    
52. glMatrixMode(GL_PROJECTION);
    
53. glLoadIdentity();
    
54. gluPerspective(60.0, (GLfloat) cx/(GLfloat) cy, 1.0f, 500.0f);
    
55. glMatrixMode(GL_MODELVIEW);
    
56. glLoadIdentity();
    
57. m_selfCamera->setLook();
    
58. // TODO: 在此处添加消息处理程序代码
    
59. }
    
60. void CosgSceneViewTestView::OnInitialUpdate()
    
61. {
    
62. CView::OnInitialUpdate();
    
63. }
    
64. void CosgSceneViewTestView::InitViewPort()
    
65. {
    
66. CRect rect;
    
67. GetClientRect(rect);
    
68. if ((rect.Width() == 0) || (rect.Height() == 0))
    
69. {
    
70.   return;
    
71. }
    
72. glMatrixMode(GL_PROJECTION);
    
73. glLoadIdentity();
    
74. //gluPerspective(90.0,rect.Width()/rect.Height(),1.0,10000000000);
    
75. gluPerspective(50.0f,1.4f,1.0f,10000.0f);
    
76. glViewport(0,0,rect.Width(),rect.Height());
    
77. glMatrixMode(GL_MODELVIEW);
    
78. glLoadIdentity();
    
79. 
    
80. //Lights,Meterial Properties
    
81. GLfloat ambientProperties[]  = {0.5f, 0.5f, 0.5f, 1.0f};
    
82. GLfloat diffuseProperties[]  = {1.0f, 1.0f, 1.0f, 1.0f};
    
83. GLfloat positionProperties[] = {0.0f, 0.0f, 2.0f, 1.0f};
    
84. GLfloat specularProperties[] = {1.0f, 0.0f, 0.0f, 1.0f};
    
85. glLightfv( GL_LIGHT0, GL_AMBIENT, ambientProperties);
    
86. glLightfv( GL_LIGHT0, GL_DIFFUSE, diffuseProperties);
    
87. glLightfv(GL_LIGHT0,GL_SPECULAR,specularProperties);
    
88. glLightfv( GL_LIGHT0, GL_POSITION, positionProperties);
    
89. //Default: lighting
    
90. glEnable(GL_LIGHT0);
    
91. //  //Modelate: texture lighting
    
92. glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
    
93.   glEnable(GL_TEXTURE_2D);
    
94.   glShadeModel(GL_SMOOTH);
    
95.   glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,diffuseProperties);
    
96. glEnable(GL_DEPTH_TEST);
    
97. 
    
98. glDrawBuffer(GL_BACK);
    
99. }
    
100. void CosgSceneViewTestView::ChangeScene()
     
101. {
     
102. m_selfCamera->setLook();
     
103. }
     
104. 
     
105. 
     
106. void CosgSceneViewTestView::OnLButtonDown(UINT nFlags, CPoint point)
     
107. {
     
108. // TODO: 在此添加消息处理程序代码和/或调用默认值
     
109. IsLeftButtonDown = true;
     
110. SetCapture();
     
111. m_lptorigin = m_lptold = point;
     
112. CView::OnLButtonDown(nFlags, point);
     
113. }
     
114. void CosgSceneViewTestView::OnRButtonDown(UINT nFlags, CPoint point)
     
115. {
     
116. // TODO: 在此添加消息处理程序代码和/或调用默认值
     
117. IsRightButtonDown = true;
     
118. SetCapture();
     
119. m_rptorigin = m_rptold = point;
     
120. CView::OnRButtonDown(nFlags, point);
     
121. }
     
122. 
     
123. void CosgSceneViewTestView::ClearUserScreen()
     
124. {
     
125. glLoadIdentity();
     
126. glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
     
127. glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
     
128. }
     
129. void CosgSceneViewTestView::OnReadconfigfile()
     
130. {
     
131. // TODO: 在此添加命令处理程序代码
     
132. CFileDialog fileDlg(TRUE,NULL,NULL,OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,_T("配置文件(*.txt)|*.txt||"),NULL);
     
133. if (fileDlg.DoModal() == IDOK)
     
134. {
     
135.   char file[100];
     
136.   /*strcpy(file,(char*)fileDlg.GetFileName().GetBuffer());*/
     
137.   strcpy(file,(char*)(LPCTSTR(fileDlg.GetFileName())));
     
138.   m_showlist.InitFromFile(file);
     
139.   AfxMessageBox(_T("ok"));
     
140. }
     
141. }
     
142. 
     
143. void CosgSceneViewTestView::OnLoadscene()
     
144. {
     
145. 
     
146. }
     
147. void CosgSceneViewTestView::OnMouseMove(UINT nFlags, CPoint point)
     
148. {
     
149. // TODO: 在此添加消息处理程序代码和/或调用默认值
     
150. CRect rect;
     
151. GetClientRect(rect);
     
152. if (IsLeftButtonDown)
     
153. {
     
154.   if (m_lptold == point)
     
155.   {
     
156.    return;
     
157.   }
     
158.   m_selfCamera->setViewByMouse(m_lptold,point);
     
159.   m_osgFrame->eyePoint = OpenglToOsg(-m_selfCamera->m_Position);
     
160.   m_osgFrame->center = OpenglToOsg(m_selfCamera->m_View);
     
161.   DrawScene();
     
162. }
     
163. if (IsRightButtonDown)
     
164. {
     
165.   if (m_rptold == point)
     
166.   {
     
167.    return;
     
168.   }
     
169.   float DifLength=sqrt(pow((float)(point.x-m_rptold.x),(float)2)+pow((float)(point.y-m_rptold.y),(float)2));
     
170.   if(point.y<m_rptold.y) DifLength=-DifLength;
     
171.   float DifRatio=DifLength/(sqrt(pow((float)rect.Width(),(float)2)+pow((float)rect.Height(),(float)2)))*5;
     
172.    m_selfCamera->zoomCamera(1-DifRatio);
     
173.   m_osgFrame->eyePoint = OpenglToOsg(-m_selfCamera->m_Position);
     
174.   m_osgFrame->center = OpenglToOsg(m_selfCamera->m_View);
     
175.   //TRACE("%f,%f,%f,%f %f %f",m_selfCamera->m_Position.x,m_selfCamera->m_Position.y,m_selfCamera->m_Position.z,m_osgFrame->eyePoint.x(),m_osgFrame->eyePoint.y(),m_osgFrame->eyePoint.z());
     
176.    DrawScene();
     
177. }
     
178. 
     
179. if (IsMiddleButtonDown)
     
180. {
     
181.   if (m_mptold == point)
     
182.   {
     
183.    return;
     
184.   }
     
185.   m_selfCamera->yawCamera(20*m_selfCamera->getSpeed()*(m_mptold.x - point.x));
     
186.   m_osgFrame->eyePoint = OpenglToOsg(-m_selfCamera->m_Position);
     
187.   m_osgFrame->center = OpenglToOsg(m_selfCamera->m_View);
     
188.   DrawScene();
     
189. }
     
190. 
     
191. if(IsLeftButtonDown) m_lptold=point;
     
192. if(IsRightButtonDown) m_rptold=point;
     
193. if (IsMiddleButtonDown) m_mptold = point;
     
194. m_ptold=point;
     
195. CView::OnMouseMove(nFlags, point);
     
196. }
     
197. void CosgSceneViewTestView::OnMButtonDown(UINT nFlags, CPoint point)
     
198. {
     
199. // TODO: 在此添加消息处理程序代码和/或调用默认值
     
200. IsMiddleButtonDown = true;
     
201. SetCapture();
     
202. m_mptorigin = m_mptold = point;
     
203. CView::OnMButtonDown(nFlags, point);
     
204. }
     
205. void CosgSceneViewTestView::OnOpenModel()
     
206. {
     
207. // TODO: 在此添加命令处理程序代码
     
208. CFileDialog fileDlg(true,NULL,NULL,OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT, _T("All Files (*.*)|*.*||"));
     
209. if (fileDlg.DoModal() == IDOK)
     
210. {
     
211.   CString filename = fileDlg.GetFileName();
     
212.   std::string std_Name(filename);
     
213.   m_osgFrame->InitSceneView(std_Name);
     
214.   DrawScene();
     
215. }
     
216. }
     
217. void CosgSceneViewTestView::OnLButtonUp(UINT nFlags, CPoint point)
     
218. {
     
219. // TODO: 在此添加消息处理程序代码和/或调用默认值
     
220. IsLeftButtonDown = false;
     
221. ReleaseCapture();
     
222. CView::OnLButtonUp(nFlags, point);
     
223. }
     
224. void CosgSceneViewTestView::OnRButtonUp(UINT nFlags, CPoint point)
     
225. {
     
226. // TODO: 在此添加消息处理程序代码和/或调用默认值
     
227. IsRightButtonDown = false;
     
228. ReleaseCapture();
     
229. CView::OnRButtonUp(nFlags, point);
     
230. }
     
231. void CosgSceneViewTestView::OnMButtonUp(UINT nFlags, CPoint point)
     
232. {
     
233. // TODO: 在此添加消息处理程序代码和/或调用默认值
     
234. IsMiddleButtonDown = false;
     
235. ReleaseCapture();
     
236. CView::OnMButtonUp(nFlags, point);
     
237. }
     
238. //////////////////////////////////////////////////////////////////////////
     
239. /* opengl坐标转换为osg坐标 */
     
240. osg::Vec3 CosgSceneViewTestView::OpenglToOsg(Vector3 opengl)
     
241. {
     
242. osg::Vec3 des;
     
243. float Xosg = opengl.x;
     
244. float Yosg = opengl.z;
     
245. float Zosg = -opengl.y;
     
246. des.set(Xosg,Yosg,Zosg);
     
247. return des;
     
248. }
     
249. //////////////////////////////////////////////////////////////////////////
     
250. void CosgSceneViewTestView::DrawScene()
     
251. {
     
252. InitViewPort();
     
253. ClearUserScreen();
     
254. DrawOpenGLModel();
     
255. m_osgFrame->OSG_Render_Frame();
     
256. SwapBuffers(wglGetCurrentDC());
     
257. }
     
258. ///////////////////////////////////////////////////////////////////////////
     
259. void CosgSceneViewTestView::DrawOpenGLModel()
     
260. {
     
261. glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
     
262. glPushMatrix();
     
263. ChangeScene();
     
264. DrawGroundTexture();
     
265. glPopMatrix();
     
266. }
     
267. //////////////////////////////////////////////////////////////////////////
     
268. void CosgSceneViewTestView::DrawGroundTexture()
     
269. {
     
270. glColor4f(1.0f,1.0f,1.0f,1.0f);
     
271. glBindTexture(GL_TEXTURE_2D,TextureArray[0]);
     
272. glBegin(GL_QUADS);
     
273. glNormal3f(0.0f,1.0f,0.0f);
     
274. glTexCoord2f(0.0f,0.0f);glVertex3f(500.0f,-10.0f,-500.f);
     
275. glTexCoord2f(1.0f,0.0f);glVertex3f(500.0f,-10.0f,500.0f);
     
276. glTexCoord2f(1.0f,1.0f);glVertex3f(-500.0f,-10.0f,500.0f);
     
277. glTexCoord2f(0.0f,1.0f);glVertex3f(-500.0f,-10.0f,-500.0f);
     
278. glEnd();
     
279. glFlush();
     
280. glDisable(GL_TEXTURE_2D);
     
281. }
     
282. //////////////////////////////////////////////////////////////////////////
     
283. /* 加载jpeg地形纹理*/
     
284. void CosgSceneViewTestView::JPEG_Texture(UINT textureArray[], LPSTR strFileName, int ID)
     
285. {
     
286. if(!strFileName) return;
     
287. tImageJPG *pBitMap = Load_JPEG(strFileName);
     
288. if(pBitMap == NULL) return;
     
289. glGenTextures(1,&textureArray[ID]);
     
290. glBindTexture(GL_TEXTURE_2D,textureArray[ID]);
     
291. gluBuild2DMipmaps(GL_TEXTURE_2D,3,pBitMap->sizeX,pBitMap->sizeY,GL_RGB,GL_UNSIGNED_BYTE,pBitMap->data);
     
292. glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_NEAREST);
     
293. glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR_MIPMAP_NEAREST);
     
294. if (pBitMap)
     
295. {
     
296.   if (pBitMap->data)
     
297.   {
     
298.    free(pBitMap->data);
     
299.   }
     
300.   free(pBitMap);
     
301. }
     
302. }
     
303. tImageJPG* CosgSceneViewTestView::Load_JPEG(char *strfilename)
     
304. {
     
305. struct jpeg_decompress_struct cInfo;
     
306. tImageJPG* pImgData = NULL;
     
307. FILE *pFile;
     
308. if ((pFile = fopen(strfilename,"rb")) == NULL)
     
309. {
     
310.   AfxMessageBox("Error loading jpg file.");
     
311.   return NULL;
     
312. }
     
313. jpeg_error_mgr jerr;
     
314. cInfo.err = jpeg_std_error(&jerr);
     
315. jpeg_create_decompress(&cInfo);
     
316. jpeg_stdio_src(&cInfo,pFile);
     
317. pImgData = (tImageJPG*)malloc(sizeof(tImageJPG));
     
318. Decompress_JPEG(&cInfo,pImgData);
     
319. jpeg_destroy_decompress(&cInfo);
     
320. fclose(pFile);
     
321. return pImgData;
     
322. }
     
323. void CosgSceneViewTestView::Decompress_JPEG(jpeg_decompress_struct* cInfo, tImageJPG *pImgData)
     
324. {
     
325. jpeg_read_header(cInfo,TRUE);
     
326. jpeg_start_decompress(cInfo);
     
327. pImgData->rowSpan = cInfo->image_width * cInfo->num_components;
     
328. pImgData->sizeX = cInfo->image_width;
     
329. pImgData->sizeY = cInfo->image_height;
     
330. pImgData->data = new unsigned char[pImgData->rowSpan * pImgData->sizeY];
     
331. unsigned char** rowPtr = new unsigned char*[pImgData->sizeY];
     
332. for (int i = 0;i<pImgData->sizeY;i++)
     
333. {
     
334.   rowPtr[i] = &(pImgData->data[i*pImgData->rowSpan]);
     
335. }
     
336. int rowsRead = cInfo->output_height - 1;
     
337. while (cInfo->output_scanline < cInfo->output_height)
     
338. {
     
339.   rowsRead -= jpeg_read_scanlines(cInfo,&rowPtr[rowsRead],cInfo->output_height - rowsRead);
     
340. }
     
341. delete []rowPtr;
     
342. jpeg_finish_decompress(cInfo);
     
343. }
     

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array

我无法一下子明白您做的所有事情，只能粗略地看一看您的实现过程：大体上这样使用SceneView是可以的，但是一定要注意OpenGL状态的切换，尤其是您的InitViewPort()和OnSize()等函数，其中所涉及的OpenGL调用和OSG的调用是否会有冲突的地方？这也许需要您非常熟悉SceneView的执行过程，并且通过适当的调试手段，例如gDEBugger，GLIntercept等来进行检查和判断

xuliezjq

4# array

谢谢array。。。
问题我已经解决了，我计算了一下，gluLookAt和osg::matrix:ookAt的变换矩阵其实是一样的，只是存储的方式不一样，是一种转置关系。在程序中，opengl坐标转换到osg坐标处理出现错误，导致两者不同步。
正确的转换应该是这样的：
Xosg = -Opengl.x;
Yosg = Opengl.z;
Zosg = Opengl.y;

tianxiao888

恭喜楼主，这个要了解下

xuliezjq

6# tianxiao888
另外，需要把文中的-m_selfCamera->m_position的负号去掉，这样就正确了