Point4D.Equality(Point4D, Point4D) Operador

Definição

Namespace:

System.Windows.Media.Media3D

Assembly:

PresentationCore.dll

Compara a igualdade de duas estruturas Point4D.

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

Parâmetros

point1

Point4D

A primeira estrutura Point4D a ser comparada.

point2

Point4D

A segunda estrutura Point4D a ser comparada.

Retornos

Boolean

true se as coordenadas X, Y e Z do point4D1 e do point4D2 forem iguais, caso contrário, false.

Exemplos

O exemplo a seguir mostra como usar o operador de igualdade sobrecarregado para verificar se duas Point4D estruturas são iguais.

// 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)

Comentários

Duas Point4D estruturas serão iguais se os valores de suas YXZpropriedades e W as propriedades forem iguais.

Como um Double valor pode perder a precisão quando operações aritméticas são executadas nelas, uma comparação entre dois Point4D valores logicamente iguais pode falhar.

Confira também

• Equals