Vector.Multiply Method

Definition

Namespace:

System.Windows

Assembly:

WindowsBase.dll

Multiplies the specified vector by the specified Double, Matrix, or Vector and returns the result as a Vector or Double.

Overloads

Multiply(Double, Vector)	Multiplies the specified scalar by the specified vector and returns the resulting Vector.
Multiply(Vector, Double)	Multiplies the specified vector by the specified scalar and returns the resulting Vector.
Multiply(Vector, Matrix)	Transforms the coordinate space of the specified vector using the specified Matrix.
Multiply(Vector, Vector)	Calculates the dot product of the two specified vectors and returns the result as a Double.

Multiply(Double, Vector)

Multiplies the specified scalar by the specified vector and returns the resulting Vector.

C#

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

Parameters

scalar

Double

The scalar to multiply.

vector

Vector

The vector to multiply.

Returns

Vector

The result of multiplying scalar and vector.

Examples

The following example shows how to use this method to multiply a scalar by a Vector.

C#

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;
}

See also

• Multiply(Double, Vector)

Multiply(Vector, Double)

Multiplies the specified vector by the specified scalar and returns the resulting Vector.

C#

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

Parameters

vector

Vector

The vector to multiply.

scalar

Double

The scalar to multiply.

Returns

Vector

The result of multiplying vector and scalar.

Examples

The following example shows how to use this method to multiply a Vector by a scalar.

C#

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;
}

See also

• Multiply(Double, Vector)

Multiply(Vector, Matrix)

Transforms the coordinate space of the specified vector using the specified Matrix.

C#

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

Parameters

vector

Vector

The vector structure to transform.

matrix

Matrix

The transformation to apply to vector.

Returns

Vector

The result of transforming vector by matrix.

Examples

The following example shows how to use this method to multiply a Vector by a Matrix.

C#

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;
}

See also

• Multiply(Double, Vector)

Multiply(Vector, Vector)

Calculates the dot product of the two specified vectors and returns the result as a Double.

C#

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

Parameters

vector1

Vector

The first vector to multiply.

vector2

Vector

The second vector structure to multiply.

Returns

Double

A Double containing the scalar dot product of vector1 and vector2, which is calculated using the following formula:

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

Examples

The following example shows how to use this method to multiply a Vector by a Vector.

C#

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;
}

See also

• Multiply(Double, Vector)