initState method
Initialize overlay entry content state
_initCalculateOuterRadius
needs to be called first
_initCalculateCenter
requires _initCalculateOuterRadius
to have been called
_initFanSliceList
requires _initCalculateOuterRadius
and _initCalculateCenter
to have been called
_initAnimation
is initializing a constant value for now, but if this rotation animation
is enabled in the future, it requires _initCalculateOuterRadius
and _initCalculateCenter
to have been called
Implementation
@override
void initState() {
super.initState();
_initCalculateOuterRadius();
_initCalculateCenter();
_initFanSliceList();
_initAnimation();
}