Flag duplicate boolean expressions

[filiph]

For example:

bool get isInside(....) {
  return Position.X >= Control.Center.X - BoxSize.X * 0.5f &&
      Position.X <= Control.Center.X + BoxSize.X * 0.5f &&
      Position.Y >= Control.Center.Y - BoxSize.Y * 0.5f &&
      Position.Y >= Control.Center.Y - BoxSize.Y * 0.5f;
}

Common copy-paste bug.