Why can't my OsgEarth project display normally after overlaying the .ive file?

[MRdesperado1]

The .ive file seen through osgviewer is like this.
But when I superimposed it on my project, it became like this.


Most of the .ive files are not displayed and show this thin strip. I don't know why.
My overlay code is as follows:
world = osgDB::readNodeFile("dizhoujie.ive");
osg::ref_ptrosgEarth::DrapeableNode dnode = new osgEarth::DrapeableNode();
dnode->addChild(world);
mapNode->addChild(dnode);
I use OSG version 3.6.3 and osgearth version 2.10.

[gwaldron]

What coord system is your model in? It needs to be geocentric (ECEF) coordinates for this to have a chance of working.

[MRdesperado1]

Thank you very much. The problem has been solved.