Vector.Multiply 運算子

定義

命名空間:

System.Windows

組件:

WindowsBase.dll

將指定的 Vector 乘以指定的 Double、Matrix 或 Vector，並傳回結果。

多載

Multiply(Vector, Matrix)	使用指定的 Matrix 轉換所指定向量的座標空間。
Multiply(Vector, Vector)	計算兩個所指定向量結構的點積，並傳回結果做為 Double。
Multiply(Double, Vector)	將指定的純量乘以指定的向量，並傳回產生的向量。
Multiply(Vector, Double)	將指定的向量乘以指定的純量，並傳回產生的向量。

Multiply(Vector, Matrix)

使用指定的 Matrix 轉換所指定向量的座標空間。

public:
 static System::Windows::Vector operator *(System::Windows::Vector vector, System::Windows::Media::Matrix matrix);

public static System.Windows.Vector operator * (System.Windows.Vector vector, System.Windows.Media.Matrix matrix);

static member ( * ) : System.Windows.Vector * System.Windows.Media.Matrix -> System.Windows.Vector

Public Shared Operator * (vector As Vector, matrix As Matrix) As Vector

參數

vector

Vector

要轉換的向量。

matrix

Matrix

要套用至 vector 的轉換。

傳回

Vector

依 vector 轉換 matrix 的結果。

範例

下列範例示範如何使用這個運算子 (*) ，將 結構乘 Vector 以 Matrix 結構。

private Vector overloadedMultiplyVectorByMatrixOperatorExample()
{
    Vector vector1 = new Vector(20, 30);
    Matrix matrix1 = new Matrix(40, 50, 60, 70, 80, 90);
    Vector vectorResult = new Vector();

    // Multiply the vector and matrix.
    // vectorResult is equal to (2600,3100).
    vectorResult = vector1 * matrix1;

    return vectorResult;
}

Private Function overloadedMultiplyVectorByMatrixOperatorExample() As Vector
    Dim vector1 As New Vector(20, 30)
    Dim matrix1 As New Matrix(40, 50, 60, 70, 80, 90)
    Dim vectorResult As New Vector()

    ' Multiply the vector and matrix.
    ' vectorResult is equal to (2600,3100).
    vectorResult = vector1 * matrix1

    Return vectorResult

End Function

另請參閱

• Multiply(Double, Vector)

Multiply(Vector, Vector)

計算兩個所指定向量結構的點積，並傳回結果做為 Double。

public:
 static double operator *(System::Windows::Vector vector1, System::Windows::Vector vector2);

public static double operator * (System.Windows.Vector vector1, System.Windows.Vector vector2);

static member ( * ) : System.Windows.Vector * System.Windows.Vector -> double

Public Shared Operator * (vector1 As Vector, vector2 As Vector) As Double

參數

vector1

Vector

要相乘的第一個向量。

vector2

Vector

要相乘的第二個向量。

傳回

Double

傳回 Double，包含 vector1 與 vector2 的純量點積，這是使用下列公式計算而來：

vector1.X * vector2.X + vector1.Y * vector2.Y

範例

下列範例示範如何使用這個運算子 (*) ，將 結構乘 Vector 以 Vector 。

private Double overloadedOperatorGetDotProductExample()
{
    Vector vector1 = new Vector(20, 30);
    Vector vector2 = new Vector(45, 70);

    // Return the dot product of the two specified vectors
    // using the overloaded "*" operator.
    // The dot product is calculated using the following 
    // formula: (vector1.X * vector2.X) + (vector1.Y * vector2.Y).
    // doubleResult is equal to 3000
    Double doubleResult = Vector.Multiply(vector1, vector2);

    return doubleResult;
}

Private Function overloadedOperatorGetDotProductExample() As Double
    Dim vector1 As New Vector(20, 30)
    Dim vector2 As New Vector(45, 70)

    ' Return the dot product of the two specified vectors
    ' using the overloaded "*" operator.
    ' The dot product is calculated using the following 
    ' formula: (vector1.X * vector2.X) + (vector1.Y * vector2.Y).
    ' doubleResult is equal to 3000
    Dim doubleResult As Double = Vector.Multiply(vector1, vector2)

    Return doubleResult

End Function

另請參閱

• Multiply(Double, Vector)

Multiply(Double, Vector)

將指定的純量乘以指定的向量，並傳回產生的向量。

public:
 static System::Windows::Vector operator *(double scalar, System::Windows::Vector vector);

public static System.Windows.Vector operator * (double scalar, System.Windows.Vector vector);

static member ( * ) : double * System.Windows.Vector -> System.Windows.Vector

Public Shared Operator * (scalar As Double, vector As Vector) As Vector

參數

scalar

Double

要相乘的純量。

vector

Vector

要相乘的向量。

傳回

Vector

scalar 和 vector 相乘的乘積。

範例

下列範例示範如何使用這個運算子 (*) 將純量乘以 Vector 結構。

private Vector overloadedMultiplicationOperatorExample2()
{
    Vector vector1 = new Vector(20, 30);
    Double scalar1 = 75;

    // vectorResult is equal to (1500,2250)
    Vector vectorResult = scalar1 * vector1;

    return vectorResult;
}

Private Function overloadedMultiplicationOperatorExample2() As Vector
    Dim vector1 As New Vector(20, 30)
    Dim scalar1 As Double = 75

    ' vectorResult is equal to (1500,2250)
    Dim vectorResult As Vector = scalar1 * vector1

    Return vectorResult

End Function

另請參閱

• Multiply(Double, Vector)

Multiply(Vector, Double)

將指定的向量乘以指定的純量，並傳回產生的向量。

public:
 static System::Windows::Vector operator *(System::Windows::Vector vector, double scalar);

public static System.Windows.Vector operator * (System.Windows.Vector vector, double scalar);

static member ( * ) : System.Windows.Vector * double -> System.Windows.Vector

Public Shared Operator * (vector As Vector, scalar As Double) As Vector

參數

vector

Vector

要相乘的向量。

scalar

Double

要相乘的純量。

傳回

Vector

vector 和 scalar 相乘的乘積。

範例

下列範例示範如何使用這個運算子 (*) 將結構乘 Vector 以純量。

private Vector overloadedMultiplicationOperatorExample1()
{
    Vector vector1 = new Vector(20, 30);
    Double scalar1 = 75;

    // vectorResult is equal to (1500,2250)
    Vector vectorResult = vector1 * scalar1;

    return vectorResult;
}

Private Function overloadedMultiplicationOperatorExample1() As Vector
    Dim vector1 As New Vector(20, 30)
    Dim scalar1 As Double = 75

    ' vectorResult is equal to (1500,2250)
    Dim vectorResult As Vector = vector1 * scalar1

    Return vectorResult

End Function

另請參閱

• Multiply(Double, Vector)