Vector.Equality(Vector, Vector) 演算子

定義

2 つのベクターを比較し、相互に等価かどうかを判断します。Compares two vectors for equality.

public:
 static bool operator ==(System::Windows::Vector vector1, System::Windows::Vector vector2);
public static bool operator == (System.Windows.Vector vector1, System.Windows.Vector vector2);
static member ( = ) : System.Windows.Vector * System.Windows.Vector -> bool
Public Shared Operator == (vector1 As Vector, vector2 As Vector) As Boolean

パラメーター

vector1
Vector

比較する最初のベクトル。The first vector to compare.

vector2
Vector

比較する 2 番目のベクトル。The second vector to compare.

戻り値

trueXY および vector1 コンポーネントが等しい場合は vector2。それ以外の場合は falsetrue if the X and Y components of vector1 and vector2 are equal; otherwise, false.

次の例では、この演算子 (= =) を使用して、2つの Vector 構造体が等しいかどうかを確認する方法を示します。The following example shows how to use this operator (==) to check whether two Vector structures are equal.

private Boolean overloadedEqualityOperatorExample()
{
    Vector vector1 = new Vector(20, 30);
    Vector vector2 = new Vector(45, 70);

    // If the two vectors are equal, areEqual is True,
    // otherwise it is False. In this example it is False.
    Boolean areEqual = (vector1 == vector2);

    return areEqual;
}
Private Function overloadedEqualityOperatorExample() As Boolean
    Dim vector1 As New Vector(20, 30)
    Dim vector2 As New Vector(45, 70)

    ' If the two vectors are equal, areEqual is True,
    ' otherwise it is False. In this example it is False.
    Dim areEqual As Boolean = (vector1 = vector2)

    Return areEqual

End Function

注釈

ベクターの X プロパティと Y プロパティについては、Double 値を使用して説明します。A vector's X and Y properties are described using Double values. Double の値は算術演算を実行すると有効桁数が失われる可能性があるため、論理的に等しい2つの Vector 構造体の比較は失敗する可能性があります。Because the value of a Double can lose precision when arithmetic operations are performed on it, a comparison between two Vector structures that are logically equal might fail.

適用対象

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