Vector2.Dot 点乘

static function Dot (lhs : Vector2, rhs : Vector2) : float


Dot Product of two vectors.


Returns lhs . rhs.

返回lhs . rhs。

For normalized vectors Dot returns 1 if they point in exactly the same direction; -1 if they point in completely opposite directions; and a number in between for other cases (e.g. Dot returns zero if vectors are perpendicular).


For vectors of arbitrary length the Dot return values are similar: they get larger when the angle between vectors decreases.


Page last updated: 2011-1-4