Point4D.Equality(Point4D, Point4D) 運算子

定義

命名空間:

System.Windows.Media.Media3D

組件:

PresentationCore.dll

比較兩個 Point4D 結構是否相等。

public:
 static bool operator ==(System::Windows::Media::Media3D::Point4D point1, System::Windows::Media::Media3D::Point4D point2);

public static bool operator == (System.Windows.Media.Media3D.Point4D point1, System.Windows.Media.Media3D.Point4D point2);

static member ( = ) : System.Windows.Media.Media3D.Point4D * System.Windows.Media.Media3D.Point4D -> bool

Public Shared Operator == (point1 As Point4D, point2 As Point4D) As Boolean

參數

point1

Point4D

要比較的第一個 Point4D 結構。

point2

Point4D

要比較的第二個 Point4D 結構。

傳回

Boolean

如果 point4D1 和 point4D2 的 X、Y 和 Z 座標相等則為 true，否則為 false。

範例

下列範例示範如何使用多載相等運算子來檢查兩 Point4D 個 結構是否相等。

// Checks if two Point4D structures are equal using the overloaded equality operator.

Point4D point1 = new Point4D(10, 5, 1, 4);
Point4D point2 = new Point4D(15, 40, 60, 75);
Boolean areEqual;

areEqual = (point1 == point2);
// areEqual is False

// Displaying Results
syntaxString = "areEqual = (point1 == point2);";
resultType = "Boolean";
operationString = "Checking if two 3D points are equal";
ShowResults(areEqual.ToString(), syntaxString, resultType, operationString);

' Checks if two Point4D structures are equal using the overloaded equality operator.

Dim point1 As New Point4D(10, 5, 1, 4)
Dim point2 As New Point4D(15, 40, 60, 75)
Dim areEqual As Boolean

areEqual = (point1 = point2)
' areEqual is False

' Displaying Results
syntaxString = "areEqual = (point1 == point2)"
resultType = "Boolean"
operationString = "Checking if two 3D points are equal"
ShowResults(areEqual.ToString(), syntaxString, resultType, operationString)

備註

如果 、 YX 、 Z 和 W 屬性的值相同，則兩 Point4D 個 結構相等。

由於在 Double 算數運算上執行算數運算時，值可能會失去精確度，因此邏輯上相等的兩 Point4D 個值之間的比較可能會失敗。

另請參閱

• Equals