panCamera method
Implementation
void panCamera(Vector2 to, [double sensitivity = 1.0]){
final double x = (!cameraControls.panX)?0:((to.x - _from.x)/100 * sensitivity);
final double y = (!cameraControls.panY)?0:((to.y - _from.y)/100 * sensitivity);
position.x += x;
position.y -= y;
_from.x = to.x;
_from.y = to.y;
}