共用方式為


Vector.Multiply 方法

定義

將指定的向量乘以指定的 DoubleMatrixVector,並傳回結果做為 VectorDouble

多載

Multiply(Double, Vector)

將指定的純量乘以指定的向量,並傳回產生的 Vector

Multiply(Vector, Double)

將指定的向量乘以指定的純量,並傳回產生的 Vector

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 Vector

public:
 static System::Windows::Vector Multiply(double scalar, System::Windows::Vector vector);
public static System.Windows.Vector Multiply (double scalar, System.Windows.Vector vector);
static member Multiply : double * System.Windows.Vector -> System.Windows.Vector
Public Shared Function Multiply (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

scalarvector 相乘的乘積。

範例

下列範例示範如何使用這個方法,將純量乘以 Vector

private Vector multiplyVectorByScalarExample2()
{
    Vector vector1 = new Vector(20, 30);
    Double scalar1 = 75;
    Vector vectorResult = new Vector();

    // Multiply the vector by the scalar.
    // vectorResult is equal to (1500,2250)
    vectorResult = Vector.Multiply(scalar1, vector1);

    return vectorResult;
}

另請參閱

適用於

Multiply(Vector, Double)

將指定的向量乘以指定的純量,並傳回產生的 Vector

public:
 static System::Windows::Vector Multiply(System::Windows::Vector vector, double scalar);
public static System.Windows.Vector Multiply (System.Windows.Vector vector, double scalar);
static member Multiply : System.Windows.Vector * double -> System.Windows.Vector
Public Shared Function Multiply (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

vectorscalar 相乘的乘積。

範例

下列範例示範如何使用這個方法將 乘 Vector 以純量。

private Vector multiplyVectorByScalarExample1()
{
    Vector vector1 = new Vector(20, 30);
    Double scalar1 = 75;
    Vector vectorResult = new Vector();

    // Multiply the vector by the scalar.
    // vectorResult is equal to (1500,2250)
    vectorResult = Vector.Multiply(vector1, scalar1);

    return vectorResult;
}

另請參閱

適用於

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 Multiply(System::Windows::Vector vector, System::Windows::Media::Matrix matrix);
public static System.Windows.Vector Multiply (System.Windows.Vector vector, System.Windows.Media.Matrix matrix);
static member Multiply : System.Windows.Vector * System.Windows.Media.Matrix -> System.Windows.Vector
Public Shared Function Multiply (vector As Vector, matrix As Matrix) As Vector

參數

vector
Vector

要轉換的向量結構。

matrix
Matrix

要套用至 vector 的轉換。

傳回

vector 轉換 matrix 的結果。

範例

下列範例示範如何使用這個方法將 乘 VectorMatrix

private Vector multiplyVectorByMatrixExample()
{
    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 = Vector.Multiply(vector1, matrix1);

    return vectorResult;
}

另請參閱

適用於

Multiply(Vector, Vector)

計算兩個所指定向量的點積,並傳回結果做為 Double

public:
 static double Multiply(System::Windows::Vector vector1, System::Windows::Vector vector2);
public static double Multiply (System.Windows.Vector vector1, System.Windows.Vector vector2);
static member Multiply : System.Windows.Vector * System.Windows.Vector -> double
Public Shared Function Multiply (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結構。

傳回

Double,包含 vector1vector2 的純量點積 (Dot Product),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方法將 乘 VectorVector

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

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

    return doubleResult;
}

另請參閱

適用於