There is no 3D view from tilt angle，but only top view.

[coopergogo]

This project is useful for study cesium-native 3d tileset. i have tried to compile-build from master, but failed several times. finally, i select the branch cesium-integration, with some simple typo fix for CMakeLists.txt, i compile and build it successful.

But there is no 3d view like cesium-js, but only top view. i tried some shortcut keys and mouse, but nothing worked. How can I see the 3d view?

This is the top-view of my example data(3d tiles pnts):