The first place I asked my question is long, so I want to move it here.
I make demo. Why doesn’t billbordmode work…?
front 
(screen shot)
side 
(screen shot)
To get the camera position from mapbox 
.
The first place I asked my question is long, so I want to move it here.
I make demo. Why doesn’t billbordmode work…?
front (screen shot)
side (screen shot)
To get the camera position from mapbox .