Point4D.Equals Method (Point4D, Point4D)


Compares two Point4D structures for equality.

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

public static bool Equals(
	Point4D point1,
	Point4D point2


Type: System.Windows.Media.Media3D.Point4D

The first Point4D structure to compare.

Type: System.Windows.Media.Media3D.Point4D

The second Point4D structure to compare.

Return Value

Type: System.Boolean

true if the X, Y, and Z components of point3D1 and point3D2 are equal; false otherwise.

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

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

The following example shows how to check whether two Point4D structures are equal.

// Checks if two Point4D structures are equal using the static Equals method.

// point1's x,y,z,w properties set when the structure is created  
Point4D point1 = new Point4D(10, 5, 1, 4);

Point4D point2 = new Point4D();
Boolean areEqual;

// settting point2's x,y,z,w properties   
point2.X = 15;
point2.Y = 40;
point2.Z = 60;
point2.W = 75;

areEqual = Point4D.Equals(point1, point2);
// areEqual is False	

//Displaying Results
syntaxString = "areEqual = Point4D.Equals(point1, point2);";
resultType = "Boolean";
operationString = "Checking if 3D two points are equal";
ShowResults(areEqual.ToString(), syntaxString, resultType, operationString);

.NET Framework
Available since 3.0
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