OSG顯示圖片的幾種方法???????????????????????

來源:互聯網
上載者:User

方法一:沒有幾何體,直接顯示圖片(見王銳、錢學雷的《OSG三維渲染引擎設計與實踐》P119 在情境中繪製位元影像):
osfg::ref_ptr<osg::DrawPixels> bmp= new osg::DrawPixels;
bmp->setPosition( osg::Vec3( 0.0, 0.0, 0.0));
bmp->setImage( osgDB::readImageFile("***.png"));

osg::ref_ptr< osg::Geode> geode= new osg::Geode;
geode->addDrawable( bmp.get());

 

方法二:有幾何體,設定節點的狀態集StateSet(參照OSG海軍教程第2課:應用StateSet建立帶有

紋理的幾何體):
osg::Texture2D* KLN89FaceTexture = new osg::Texture2D;
KLN89FaceTexture->setDataVariance(osg::Object::DYNAMIC);

osg::Image* klnFace = osgDB::readImageFile("KLN89FaceB.tga");

KLN89FaceTexture->setImage(klnFace);

osg::StateSet* stateOne = new osg::StateSet();
stateOne->setTextureAttributeAndModes(0,KLN89FaceTexture,

osg::StateAttribute::ON);

geode->setStateSet(stateOne);

還有一種是調用drawImplement()來繪製,這個還要再看看???????????????????????????

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