[osg]osg背景图设置-白红宇

[osg]osg背景图设置

阅读量：5036 次

发布时间：2019-06-12

本文共 1425 字，大约阅读时间需要 4 分钟。

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#include 
     
        #include 
      
         #include 
       
          #include 
        
           #include 
         
            #include 
          
            int main( int argc, char** argv ) { osg::ref_ptr
           
             texture = new osg::Texture2D; osg::ref_ptr
            
              image = osgDB::readImageFile( "D:/background1.png" ); texture->setImage( image.get() ); osg::ref_ptr
             
               quad = osg::createTexturedQuadGeometry(osg::Vec3(), osg::Vec3(1.0f, 0.0f, 0.0f), osg::Vec3(0.0f, 1.0f, 0.0f) ); quad->getOrCreateStateSet()->setTextureAttributeAndModes( 0,texture.get()); osg::ref_ptr
              
                geode = new osg::Geode; geode->addDrawable( quad.get() ); osg::ref_ptr
               
                 camera = new osg::Camera; camera->setClearMask( 0 ); camera->setCullingActive( false ); camera->setAllowEventFocus( false ); camera->setReferenceFrame( osg::Transform::ABSOLUTE_RF ); camera->setRenderOrder( osg::Camera::POST_RENDER ); camera->setProjectionMatrix( osg::Matrix::ortho2D(0.0, 1.0, 0.0, 1.0) ); camera->addChild( geode.get() ); osg::StateSet* ss = camera->getOrCreateStateSet(); ss->setMode( GL_LIGHTING, osg::StateAttribute::OFF ); ss->setAttributeAndModes( new osg::Depth(osg::Depth::LEQUAL, 1.0, 1.0) ); osg::ref_ptr
                
                  root = new osg::Group; root->addChild( camera.get() ); root->addChild( osgDB::readNodeFile("cessna.osg") ); osgViewer::Viewer viewer; viewer.setSceneData( root.get() ); return viewer.run();