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 model11     //osgUtil::Optimizer optimizer;12     //optimizer.optimize(mModel.get());13     //optimizer.reset();14 15     //// Add the model to the scene16     //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 left26     pyramidVertices->push_back( osg::Vec3(10, 0, 0) ); // front right27     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) ); // peak30 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 red69     colors->push_back(osg::Vec4(0.0f, 1.0f, 0.0f, 1.0f) ); //index 1 green70     colors->push_back(osg::Vec4(0.0f, 0.0f, 1.0f, 1.0f) ); //index 2 blue71     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 red73 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 to81     // add the transform as a child of the root node and the82     // 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 the87     // position of the tank model in the scene88     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 scene96    // mRoot->addChild(root.get());97 98 }