# Point3D.Subtraction Operator

## Definition

Subtracts a Point3D structure or a Vector3D structure from a Point3D structure.

 Subtraction(Point3D, Point3D) Subtracts a Point3D structure from a Point3D structure and returns the result as a Vector3D structure. Subtraction(Point3D, Vector3D) Subtracts a Vector3D structure from a Point3D structure and returns the result as a Point3D structure.

## Subtraction(Point3D, Point3D)

Subtracts a Point3D structure from a Point3D structure and returns the result as a Vector3D structure.

``````public:
static System::Windows::Media::Media3D::Vector3D operator -(System::Windows::Media::Media3D::Point3D point1, System::Windows::Media::Media3D::Point3D point2);``````
``public static System.Windows.Media.Media3D.Vector3D 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 -> System.Windows.Media.Media3D.Vector3D``
``Public Shared Operator - (point1 As Point3D, point2 As Point3D) As Vector3D``

#### Parameters

point1
Point3D

The Point3D structure on which to perform subtraction.

point2
Point3D

The Point3D structure to subtract from `point1`.

#### Returns

A Vector3D structure that represents the difference between `point1` and `point2`.

### Examples

The following example shows how to use the overloaded subtraction operator to subtract a Point3D structure from a Point3D structure.

``````// Subtracts a Point3D from a Point3D using the overloaded - operator.
// Returns a Vector3D.

Point3D point1 = new Point3D(10, 5, 1);
Point3D point2 = new Point3D(15, 40, 60);
Vector3D vectorResult = new Vector3D();

vectorResult = point1 - point2;
// vectorResult is equal to (-5, -35, -59)

// Displaying Results
syntaxString = " vectorResult = point1 - point2;";
resultType = "Vector3D";
operationString = "Subtracting a Point3D from a Point3D";
ShowResults(vectorResult.ToString(), syntaxString, resultType, operationString);
``````
``````' Subtracts a Point3D from a Point3D using the overloaded - operator.
' Returns a Vector3D.

Dim point1 As New Point3D(10, 5, 1)
Dim point2 As New Point3D(15, 40, 60)
Dim vectorResult As New Vector3D()

vectorResult = point1 - point2
' vectorResult is equal to (-5, -35, -59)

' Displaying Results
syntaxString = " vectorResult = point1 - point2"
resultType = "Vector3D"
operationString = "Subtracting a Point3D from a Point3D"
ShowResults(vectorResult.ToString(), syntaxString, resultType, operationString)
``````

## Subtraction(Point3D, Vector3D)

Subtracts a Vector3D structure from a Point3D structure and returns the result as a Point3D structure.

``````public:
static System::Windows::Media::Media3D::Point3D operator -(System::Windows::Media::Media3D::Point3D point, System::Windows::Media::Media3D::Vector3D vector);``````
``public static System.Windows.Media.Media3D.Point3D operator - (System.Windows.Media.Media3D.Point3D point, System.Windows.Media.Media3D.Vector3D vector);``
``static member ( - ) : System.Windows.Media.Media3D.Point3D * System.Windows.Media.Media3D.Vector3D -> System.Windows.Media.Media3D.Point3D``
``Public Shared Operator - (point As Point3D, vector As Vector3D) As Point3D``

#### Parameters

point
Point3D

The Point3D structure from which to subtract vector.

vector
Vector3D

The Vector3D structure to subtract from point.

#### Returns

The changed Point3D structure, the result of subtracting `vector` from `point`.

### Examples

The following example shows how to use the overloaded subtraction operator to subtract a Vector3D structure from a Point3D structure.

``````// Subtracts a Vector3D from a Point3D using the overloaded - operator.
// Returns a Point3D.

Point3D point1 = new Point3D(10, 5, 1);
Vector3D vector1 = new Vector3D(20, 30, 40);
Point3D pointResult = new Point3D();

pointResult = point1 - vector1;
// pointResult is equal to (-10, -25, -39)

// Displaying Results
syntaxString = "pointResult = point1 - vector1;";
resultType = "Point3D";
operationString = "Subtracting a Vector3D from a Point3D";
ShowResults(pointResult.ToString(), syntaxString, resultType, operationString);
``````
``````' Subtracts a Vector3D from a Point3D using the overloaded - operator.
' Returns a Point3D.

Dim point1 As New Point3D(10, 5, 1)
Dim vector1 As New Vector3D(20, 30, 40)
Dim pointResult As New Point3D()

pointResult = point1 - vector1
' pointResult is equal to (-10, -25, -39)

' Displaying Results
syntaxString = "pointResult = point1 - vector1"
resultType = "Point3D"
operationString = "Subtracting a Vector3D from a Point3D"
ShowResults(pointResult.ToString(), syntaxString, resultType, operationString)
``````