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Point4D.Equality Operator

Compares two Point4D structures for equality.

Namespace:  System.Windows.Media.Media3D
Assembly:  PresentationCore (in PresentationCore.dll)

public static bool operator ==(
	Point4D point1,
	Point4D point2
)
You cannot use methods in XAML.

Parameters

point1
Type: System.Windows.Media.Media3D.Point4D

The first Point4D structure to compare.

point2
Type: System.Windows.Media.Media3D.Point4D

The second Point4D structure to compare.

Return Value

Type: System.Boolean
true if the X, Y, and Z coordinates of point4D1 and point4D2 are equal; otherwise, false.

Two Point4D structures are equal if the values of their X, Y, Z, and W properties are the same.

Because a Double value can lose precision when arithmetic operations are performed on them, a comparison between two Point4D values that are logically equal might fail.

The following example shows how to use the overloaded equality operator to check whether two Point4D structures are equal.

// 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);

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0
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