在OSGMFC程序基础上修改OSG_MFC类的方法，如下：
1 void cOSG::InitSceneGraph(void)
2 {
3 // Init the main Root Node/Group
4 mRoot = new osg::Group;
5
6 //// Load the Model from the model name
7 //mModel = osgDB::readNodeFile(m_ModelName);
8 //if (!mModel) return;
9
10 // Optimize the model
11 //osgUtil::Optimizer optimizer;
12 //optimizer.optimize(mModel.get());
13 //optimizer.reset();
14
15 //// Add the model to the scene
16 //mRoot->addChild(mModel.get());
17
18
19 osg::Geode* pyramidGeode = new osg::Geode();
20 osg::Geometry* pyramidGeometry = new osg::Geometry();
21 pyramidGeode->addDrawable(pyramidGeometry);
22 mRoot->addChild(pyramidGeode);
23
24 osg::Vec3Array* pyramidVertices = new osg::Vec3Array;
25 pyramidVertices->push_back( osg::Vec3( 0, 0, 0) ); // front left
26 pyramidVertices->push_back( osg::Vec3(10, 0, 0) ); // front right
27 pyramidVertices->push_back( osg::Vec3(10,10, 0) ); // back right
28 pyramidVertices->push_back( osg::Vec3( 0,10, 0) ); // back left
29 pyramidVertices->push_back( osg::Vec3( 5, 5,10) ); // peak
30
31 pyramidGeometry->setVertexArray( pyramidVertices );
32
33 osg::DrawElementsUInt* pyramidBase = new osg::DrawElementsUInt(osg::PrimitiveSet::QUADS, 0);
34 pyramidBase->push_back(3);
35 pyramidBase->push_back(2);
36 pyramidBase->push_back(1);
37 pyramidBase->push_back(0);
38 pyramidGeometry->addPrimitiveSet(pyramidBase);
39
40 osg::DrawElementsUInt* pyramidFaceOne = new osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLES, 0);
41 pyramidFaceOne->push_back(0);
42 pyramidFaceOne->push_back(1);
43 pyramidFaceOne->push_back(4);
44 pyramidGeometry->addPrimitiveSet(pyramidFaceOne);
45
46 osg::DrawElementsUInt* pyramidFaceTwo =
47 new osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLES, 0);
48 pyramidFaceTwo->push_back(1);
49 pyramidFaceTwo->push_back(2);
50 pyramidFaceTwo->push_back(4);
51 pyramidGeometry->addPrimitiveSet(pyramidFaceTwo);
52
53 osg::DrawElementsUInt* pyramidFaceThree =
54 new osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLES, 0);
55 pyramidFaceThree->push_back(2);
56 pyramidFaceThree->push_back(3);
57 pyramidFaceThree->push_back(4);
58 pyramidGeometry->addPrimitiveSet(pyramidFaceThree);
59
60 osg::DrawElementsUInt* pyramidFaceFour =
61 new osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLES, 0);
62 pyramidFaceFour->push_back(3);
63 pyramidFaceFour->push_back(0);
64 pyramidFaceFour->push_back(4);
65 pyramidGeometry->addPrimitiveSet(pyramidFaceFour);
66
67 osg::Vec4Array* colors = new osg::Vec4Array;
68 colors->push_back(osg::Vec4(1.0f, 0.0f, 0.0f, 1.0f) ); //index 0 red
69 colors->push_back(osg::Vec4(0.0f, 1.0f, 0.0f, 1.0f) ); //index 1 green
70 colors->push_back(osg::Vec4(0.0f, 0.0f, 1.0f, 1.0f) ); //index 2 blue
71 colors->push_back(osg::Vec4(1.0f, 1.0f, 1.0f, 1.0f) ); //index 3 white
72 colors->push_back(osg::Vec4(1.0f, 0.0f, 0.0f, 1.0f) ); //index 4 red
73
74 pyramidGeometry->setColorArray(colors);
75 pyramidGeometry->setColorBinding(osg::Geometry::BIND_PER_VERTEX);
76
77 // Declare and initialize a transform node.
78 osg::PositionAttitudeTransform* pyramidTwoXForm = new osg::PositionAttitudeTransform;
79
80 // Use the 'addChild' method of the osg::Group class to
81 // add the transform as a child of the root node and the
82 // pyramid node as a child of the transform.
83 mRoot->addChild(pyramidTwoXForm);
84 pyramidTwoXForm->addChild(pyramidGeode);
85
86 // Declare and initialize a Vec3 instance to change the
87 // position of the tank model in the scene
88 osg::Vec3 pyramidTwoPosition(15,0,0);
89 pyramidTwoXForm->setPosition( pyramidTwoPosition );
90
91 osgUtil::Optimizer optimizer;
92 optimizer.optimize(mRoot.get());
93 optimizer.reset();
94
95 // Add the model to the scene
96 // mRoot->addChild(root.get());
97
98 }
运行效果：
http://blog.csdn.net/column/details/osgdemo.html
http://trac.openscenegraph.org/projects/osg//wiki/Support/Tutorials/BasicGeometry