相关资料：
实例代码：
.pro
1 QT += core gui widgets 2 TARGET = TestOsgQt 3 TEMPLATE = app 4 DEFINES += QT_DEPRECATED_WARNINGS 5 CONFIG += c++11 6 7 SOURCES += 8 main.cpp 9 widget.cpp 10 11 HEADERS += 12 widget.h 13 14 OsgDir = D:\RuanJian\osg365R 15 CONFIG(release, debug|release) { 16 LIBS += -L$${OsgDir}/lib/ -losgQOpenGL -losgDB -losgViewer -losg -losgUtil -losgGA 17 } else { 18 LIBS += -L$${OsgDir}/lib/ -losgQOpenGLd -losgDBd -losgViewerd -losgd -losgUtild -losgGAd 19 } 20 21 INCLUDEPATH += $${OsgDir}/include 22 DEPENDPATH += $${OsgDir}/include
main.cpp
1 #include "widget.h" 2 #include <QApplication> 3 4 #include <osg/Node> 5 #include <osg/Group> 6 #include <osg/Geode> 7 #include <osg/Geometry> 8 #include <osg/Texture2D> 9 #include <osg/StateSet> 10 #include <osg/PositionAttitudeTransform> 11 #include <osgViewer/Viewer> 12 #include <osgDB/ReadFile> 13 //#include <osg/Ref_ptr> 14 15 int main(int argc, char *argv[]) 16 { 17 osg::Group* root = new osg::Group(); 18 osg::Geode* pyramidGeode = new osg::Geode(); 19 osg::Geometry* pyramidGeometry = new osg::Geometry(); 20 pyramidGeode->addDrawable(pyramidGeometry); 21 root->addChild(pyramidGeode); 22 osg::Vec3Array* pyramidVertices = new osg::Vec3Array; 23 pyramidVertices->push_back( osg::Vec3( 0, 0, 0) ); // 左前 24 pyramidVertices->push_back( osg::Vec3(10, 0, 0) ); // 右前 25 pyramidVertices->push_back( osg::Vec3(10,10, 0) ); // 右后 26 pyramidVertices->push_back( osg::Vec3( 0,10, 0) ); // 左后 27 pyramidVertices->push_back( osg::Vec3( 5, 5,10) ); // 塔尖 28 pyramidGeometry->setVertexArray( pyramidVertices ); 29 osg::DrawElementsUInt* pyramidBase = 30 new osg::DrawElementsUInt(osg::PrimitiveSet::QUADS, 0); 31 pyramidBase->push_back(3); 32 pyramidBase->push_back(2); 33 pyramidBase->push_back(1); 34 pyramidBase->push_back(0); 35 pyramidGeometry->addPrimitiveSet(pyramidBase); 36 //重复这一过程，添加金字塔的每个面。再次注意，顶点是以逆时针为顺序添加的。 37 osg::DrawElementsUInt* pyramidFaceOne = new osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLES, 0); 38 pyramidFaceOne->push_back(0); 39 pyramidFaceOne->push_back(1); 40 pyramidFaceOne->push_back(4); 41 pyramidGeometry->addPrimitiveSet(pyramidFaceOne); 42 43 osg::DrawElementsUInt* pyramidFaceTwo = 44 new osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLES, 0); 45 pyramidFaceTwo->push_back(1); 46 pyramidFaceTwo->push_back(2); 47 pyramidFaceTwo->push_back(4); 48 pyramidGeometry->addPrimitiveSet(pyramidFaceTwo); 49 50 osg::DrawElementsUInt* pyramidFaceThree = new osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLES, 0); 51 pyramidFaceThree->push_back(2); 52 pyramidFaceThree->push_back(3); 53 pyramidFaceThree->push_back(4); 54 pyramidGeometry->addPrimitiveSet(pyramidFaceThree); 55 56 osg::DrawElementsUInt* pyramidFaceFour = 57 new osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLES, 0); 58 pyramidFaceFour->push_back(3); 59 pyramidFaceFour->push_back(0); 60 pyramidFaceFour->push_back(4); 61 pyramidGeometry->addPrimitiveSet(pyramidFaceFour); 62 //定义一个Vec4的数组，用于保存颜色值。 63 osg::Vec4Array* colors = new osg::Vec4Array; 64 colors->push_back(osg::Vec4(1.0f, 0.0f, 0.0f, 1.0f) ); //索引0 红色 65 colors->push_back(osg::Vec4(0.0f, 1.0f, 0.0f, 1.0f) ); //索引1 绿色 66 colors->push_back(osg::Vec4(0.0f, 0.0f, 1.0f, 1.0f) ); //索引2 蓝色 67 colors->push_back(osg::Vec4(1.0f, 1.0f, 1.0f, 1.0f) ); //索引3 白色 68 osg::TemplateIndexArray 69 <unsigned int, osg::Array::UIntArrayType,4,4> *colorIndexArray; 70 colorIndexArray = 71 new osg::TemplateIndexArray<unsigned int, osg::Array::UIntArrayType,4,4>; 72 colorIndexArray->push_back(0); // vertex 0 assigned color array element 0 73 colorIndexArray->push_back(1); // vertex 1 assigned color array element 1 74 colorIndexArray->push_back(2); // vertex 2 assigned color array element 2 75 colorIndexArray->push_back(3); // vertex 3 assigned color array element 3 76 colorIndexArray->push_back(0); // vertex 4 assigned color array element 0 77 pyramidGeometry->setColorArray(colors); 78 // pyramidGeometry->setColorIndices(colorIndexArray); 79 pyramidGeometry->setColorBinding(osg::Geometry::BIND_PER_VERTEX); 80 81 osg::Vec2Array* texcoords = new osg::Vec2Array(5); 82 (*texcoords)[0].set(0.00f,0.0f); 83 (*texcoords)[1].set(0.25f,0.0f); 84 (*texcoords)[2].set(0.50f,0.0f); 85 (*texcoords)[3].set(0.75f,0.0f); 86 (*texcoords)[4].set(0.50f,1.0f); 87 pyramidGeometry->setTexCoordArray(0,texcoords); 88 //初始化位置变换节点 89 osg::PositionAttitudeTransform* pyramidTwoXForm =new osg::PositionAttitudeTransform(); 90 91 //使用osg::Group的addChild方法，将位置变换节点添加到根节点的子节点上，并将金字塔节点作为变换节点的子节点 92 root->addChild(pyramidTwoXForm); 93 pyramidTwoXForm->addChild(pyramidGeode); 94 95 // 初始化一个Vec3实例，用于改变模型在场景中的位置 96 osg::Vec3 pyramidTwoPosition(15,0,0); 97 pyramidTwoXForm->setPosition( pyramidTwoPosition ); 98 //最后，设置视窗类并进入仿真循环。 99 osgViewer::Viewer viewer; 100 101 viewer.setSceneData( root ); 102 103 return viewer.run(); 104 }
