語言

Vector.Multiply 運算子

定義

命名空間:
System.Windows
組件:
WindowsBase.dll

將指定 Vector 值乘以指定的 Double、 Matrix或 ， Vector 然後返回結果。

多載

名稱 Description
Multiply(Vector, Matrix)

利用指定的 Matrix變換指定向量的座標空間。
Multiply(Vector, Vector)

計算兩個指定向量結構的點積，並以 回傳結果為 Double。
Multiply(Double, Vector)

將指定的標量乘以指定的向量，然後返回所得向量。
Multiply(Vector, Double)

將指定的向量乘以指定的標量，然後返回所得向量。

Multiply(Vector, Matrix)

利用指定的 Matrix變換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

變換向量。

matrix
Matrix

轉換將應用於 vector。

傳回

Vector

轉換為 的結果vectormatrix。

範例

以下範例說明如何使用此運算子（*）將結構 Vector 乘以結構 Matrix 。

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

適用於

Multiply(Vector, Vector)

計算兩個指定向量結構的點積，並以 回傳結果為 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

第一個乘數向量。

vector2
Vector

第二個乘法向量。

傳回

Double

回傳包含 和 Double的vector1純量點積 的 avector2，該點積可用以下公式計算：

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

範例

以下範例說明如何使用此運算子（*）將結構乘以 VectorVector。

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

適用於

Multiply(Double, Vector)

將指定的標量乘以指定的向量，然後返回所得向量。

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

標量要乘以。

vector
Vector

乘法向量。

傳回

Vector

乘以 和 scalar的結果vector。

範例

以下範例說明如何使用此算符（*）將純量乘以結構 Vector 。

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

適用於

Multiply(Vector, Double)

將指定的向量乘以指定的標量，然後返回所得向量。

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

乘法向量。

scalar
Double

標量要乘以。

傳回

Vector

乘以 和 vector的結果scalar。

範例

以下範例說明如何使用此運算子（*）將結構乘以 Vector 標量。

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

適用於