TrueAngle is the angle from the point diagonal touches (the .. hypotenus (french math of x,y). Basicly I use it to decide how far out the dot will be, and use XY angle for the direction it's in (XY rotates it around center, while trueangle decides distance from center)

X is left-right, y is up-down, z is forward-back

What do you mean by perspective?

I need to get target from home... I'm at school