Point3D.Equality(Point3D, Point3D) 運算子

定義

命名空間:

System.Windows.Media.Media3D

組件:

PresentationCore.dll

比較兩個 Point3D 結構是否相等。

public:
 static bool operator ==(System::Windows::Media::Media3D::Point3D point1, System::Windows::Media::Media3D::Point3D point2);

public static bool operator == (System.Windows.Media.Media3D.Point3D point1, System.Windows.Media.Media3D.Point3D point2);

static member ( = ) : System.Windows.Media.Media3D.Point3D * System.Windows.Media.Media3D.Point3D -> bool

Public Shared Operator == (point1 As Point3D, point2 As Point3D) As Boolean

參數

point1

Point3D

要比較的第一個 Point3D 結構。

point2

Point3D

要比較的第二個 Point3D 結構。

傳回

Boolean

如果 point1 和 point2 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 Point3D 個結構是否相等。

// Checks if two Point3Ds are equal using the overloaded equality operator.

Point3D point1 = new Point3D(10, 5, 1);
Point3D point2 = new Point3D(15, 40, 60);
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 Point3Ds are equal using the overloaded equality operator.

Dim point1 As New Point3D(10, 5, 1)
Dim point2 As New Point3D(15, 40, 60)
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 、 Y 和 Z 屬性的值相同，則兩 Point3D 個 X 結構相等。

由於在算數運算上執行算數運算時，值可能會失去精確度，因此 Double 邏輯上相等的兩 Point3D 個實例之間的比較可能會失敗。

另請參閱

• Equals