请教一个Text消失的问题.
请教大家一个小问题,我做了一个小程序,为何文字老是消失(感觉低于垂直于平面0点则存在,否则则消失).而同是这个group中的别的东西则会存在.
代码如下
osg::ref_ptr<osg::Geode> textgeode = new osg::Geode();
osg::ref_ptr<osgText::TextBase> myText = new osgText::Text;
myText->setDataVariance(osg::Object::STATIC);
myText->setFontResolution(128.0f, 128.0f);
myText->setPosition(p1);
myText->setCharacterSize(txtSize);
myText->setAxisAlignment(osgText::TextBase::SCREEN);
myText->setCharacterSizeMode(osgText::TextBase::SCREEN_COORDS);
myText->setAutoRotateToScreen(true);
//osg::AutoTransform::AutoRotateMode autoMode;
//annot->setAutoRotateToScreen(autoMode);
myText->setText(text);
myText->setColor(annotclr);
if (font) myText->setFont(font);
textgeode->addDrawable(myText);
osg::ref_ptr<osg::Group> grp = new osg::Group;
grp->addChild(textgeode);
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