Vector.Multiply 方法

定义

命名空间:
System.Windows
程序集:
WindowsBase.dll

将指定的向量乘以指定DoubleMatrix，或Vector返回结果作为Vector或 Double。

重载

名称 说明
Multiply(Double, Vector)

将指定的标量乘以指定的向量并返回结果 Vector。
Multiply(Vector, Double)

将指定的向量乘以指定的标量并返回结果 Vector。
Multiply(Vector, Matrix)

使用指定的向量转换指定 Matrix矢量的坐标空间。
Multiply(Vector, Vector)

计算两个指定向量的点积，并返回结果作为一个 Double。

Multiply(Double, Vector)

将指定的标量乘以指定的向量并返回结果 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

参数

scalar
Double

要相乘的标量。

vector
Vector

要相乘的向量。

返回

Vector

乘 scalar 法和 vector.

示例

以下示例演示如何使用此方法将标量乘以一个 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;
}

另请参阅

适用于

Multiply(Vector, Double)

将指定的向量乘以指定的标量并返回结果 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

参数

vector
Vector

要相乘的向量。

scalar
Double

要相乘的标量。

返回

Vector

乘 vector 法和 scalar.

示例

以下示例演示如何使用此方法乘 Vector 以标量。

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;
}

另请参阅

适用于

Multiply(Vector, Matrix)

使用指定的向量转换指定 Matrix矢量的坐标空间。

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

参数

vector
Vector

要转换的向量结构。

matrix
Matrix

要应用于 vector的转换。

返回

Vector

转换的结果vector。matrix

示例

下面的示例演示如何使用此方法乘以一 Vector 个 Matrix。

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;
}

另请参阅

适用于

Multiply(Vector, Vector)

计算两个指定向量的点积，并返回结果作为一个 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

参数

vector1
Vector

要相乘的第一个向量。

vector2
Vector

要相乘的第二个向量结构。

返回

Double

一个Double包含标量点乘积且vector1使用以下公式计算的标量点积vector2：

(vector1.X * vector2.X) + (vector1.Y * vector2.Y)

示例

下面的示例演示如何使用此方法乘以一 Vector 个 Vector。

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;
}

另请参阅

适用于