一个关于osgearth_contour的问题

player111

我按照osgearth_contour的例子做了一个根据高程计算纹理的程序，结果显示老有问题请各位高手解决一下。

1. int main(int argc, char** argv)
   
2. {
   
3. osg::ArgumentParser arguments(&argc,argv);
   
4. 
   
5. osgViewer::Viewer viewer(arguments);
   
6. 
   
7. // install the programmable manipulator.
   
8. osgEarthUtil::EarthManipulator* manip = new osgEarthUtil::EarthManipulator();
   
9. 
   
10. osg::Node* sceneData = osgDB::readNodeFiles( arguments );
    
11. 
    
12. 
    
13. 
    
14. // Create a "Map" dynamically if no nodes were loaded
    
15. // The "Map" is the data model object that we will be visualizing. It will be
    
16. // geocentric by default, but you can specify a projected map in the constructor.
    
17. osgEarth::Map* map = new osgEarth::Map();
    
18. 
    
19. // create transfer function
    
20. {
    
21. osg::TransferFunction1D* tf(new osg::TransferFunction1D());
    
22. 
    
23. tf->setColor(-10000,osg::Vec4( 0.0, 0.0,120.0/255.0,1.0));
    
24. tf->setColor( 0,osg::Vec4( 0.0, 0.0, 1.0,1.0)); // everything till 0m is interpreted as sea
    
25. tf->setColor( 1e-6,osg::Vec4( 0.0,150.0/255.0, 0.0,1.0)); // everything above 0m is interpreted as land
    
26. tf->setColor( 500,osg::Vec4( 0.0,200.0/255.0, 0.0,1.0));
    
27. tf->setColor( 1000,osg::Vec4(110.0/255.0,210.0/255.0, 0.0,1.0));
    
28. tf->setColor( 1500,osg::Vec4(220.0/255.0,220.0/255.0, 0.0,1.0));
    
29. tf->setColor( 2000,osg::Vec4(220.0/255.0,197.0/255.0, 0.0,1.0));
    
30. tf->setColor( 2500,osg::Vec4(220.0/255.0,172.0/255.0, 0.0,1.0));
    
31. tf->setColor( 3000,osg::Vec4(220.0/255.0,160.0/255.0, 0.0,1.0));
    
32. tf->setColor( 3500,osg::Vec4(185.0/255.0,155.0/255.0, 75.0/255.0,1.0));
    
33. tf->setColor( 4000,osg::Vec4(170.0/255.0,155.0/255.0,110.0/255.0,1.0));
    
34. tf->setColor( 4500,osg::Vec4(150.0/255.0,150.0/255.0,150.0/255.0,1.0));
    
35. tf->setColor( 5000,osg::Vec4(190.0/255.0,190.0/255.0,190.0/255.0,1.0));
    
36. tf->setColor( 5500,osg::Vec4(230.0/255.0,230.0/255.0,230.0/255.0,1.0));
    
37. tf->setColor( 6000,osg::Vec4(250.0/255.0,250.0/255.0,250.0/255.0,1.0));
    
38. tf->setColor( 9000,osg::Vec4( 1.0, 1.0, 1.0,1.0));
    
39. osg::notify(osg::NOTICE) << "TransferFunction1D - min: " << tf->getMinimum() << "; max: " << tf->getMaximum() << std::endl;
    
40. osg::notify(osg::NOTICE) << "Image size: " << tf->getImage()->s() << std::endl;
    
41. map->setContourTransferFunction(tf);
    
42. }
    
43. // Add a heightfield layer to the map. You can add any number of heightfields and
    
44. // osgEarth will composite them automatically.
    
45. 
    
46. GDALOptions* opt = new GDALOptions();
    
47. opt->url() = "E:\\work\\osg\\video\\osgOceanandosgEarth\\osgEarth\\gwaldron-osgearth-ad74d18\\vc\\bin\\data\\srtm_62_05.tif";
    
48. map->addMapLayer( new HeightFieldMapLayer( "test_simple", opt ));
    
49. 
    
50. // The MapNode will render the Map object in the scene graph.
    
51. osgEarth::MapNode* mapNode = new osgEarth::MapNode( map );
    
52. 
    
53. sceneData = mapNode;
    
54. 
    
55. 
    
56. 
    
57. viewer.setSceneData( sceneData );
    
58. viewer.setCameraManipulator( manip );
    
59. 
    
60. manip->getSettings()->bindMouseDoubleClick(
    
61. osgEarthUtil::EarthManipulator::ACTION_GOTO,
    
62. osgGA::GUIEventAdapter::LEFT_MOUSE_BUTTON );
    
63. 
    
64. // add our fly-to handler
    
65. viewer.addEventHandler(new FlyToViewpointHandler( manip ));
    
66. 
    
67. // add some stock OSG handlers:
    
68. viewer.addEventHandler(new osgViewer::StatsHandler());
    
69. viewer.addEventHandler(new osgViewer::WindowSizeHandler());
    
70. viewer.addEventHandler(new osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()));
    
71. viewer.addEventHandler(new KeyboardEventHandler(mapNode));
    
72. 
    
73. return viewer.run();
    
74. }
    

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player111

player111

问题找到了opt->tileSize() 中设置的太大，改为128就好了

net_spy_shi

初学者，是否可以将你的源代码给我一份完整的，就是上面这个的，我不知道怎么引用头文件！

x_wp

我的osgEarth是2.1.1的，怎么没有找到osgearth_contour这个例子？

liaowei5566

是啊，怎么找不到？

player111

代码发上来大家看看吧 osgearth_contour.cpp (8.4 KB, 下载次数: 141)

2011-12-13 18:46 上传

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