Microsoft DirectX 9.0 SDK Update (October 2004)

UnsafeNativeMethods.Matrix.Transformation2D Method

Language:

Note: This documentation is preliminary and is subject to change.

Builds a 2-D transformation matrix in the xy plane.

Note: For programming in Microsoft® Visual Basic® .NET or Microsoft® JScript® .NET, use the equivalent method in the Microsoft.DirectX structures.

Definition

Visual Basic .NET Public Shared Function Transformation2D( _
    ByVal pOut As Matrix, _
    ByVal scalingCenter As Vector2, _
    ByVal scalingRotation As Single, _
    ByVal scaling As Vector2, _
    ByVal rotationCenter As Vector2, _
    ByVal rotation As Single, _
    ByVal translation As Vector2 _
) As Matrix
C# public static Matrix Transformation2D(
    Matrix pOut,
    Vector2 scalingCenter,
    float scalingRotation,
    Vector2 scaling,
    Vector2 rotationCenter,
    float rotation,
    Vector2 translation
);
Managed C++ public: static Matrix Transformation2D(
    Matrix pOut,
    Vector2 scalingCenter,
    float scalingRotation,
    Vector2 scaling,
    Vector2 rotationCenter,
    float rotation,
    Vector2 translation
);
JScript .NET public static function Transformation2D(
    pOut : Matrix,
    scalingCenter : Vector2,
    scalingRotation : float,
    scaling : Vector2,
    rotationCenter : Vector2,
    rotation : float,
    translation : Vector2
) : Matrix;

Parameters

pOut Microsoft.DirectX.Matrix. A Matrix structure that contains the transformation matrix.
scalingCenter Microsoft.DirectX.Vector2. A Vector2 structure that is a point identifying the scaling center.
scalingRotation System.Single. Scaling rotation factor. Use a zero value to specify no rotation.
scaling Microsoft.DirectX.Vector2. A Vector2 structure that is a point identifying the scale. Use Vector2.Empty to specify no scaling.
rotationCenter Microsoft.DirectX.Vector2. A Vector2 structure that is a point identifying the rotation center.
rotation System.Single. Angle of rotation, in radians.
translation Microsoft.DirectX.Vector2. A Vector2 structure that identifies the translation. Use Vector2.Empty to specify no translation.

Return Value

Microsoft.DirectX.Matrix . A Matrix structure that contains the transformation matrix.

Remarks

The Transformation2D method calculates the affine transformation matrix using the following formula, with matrix concatenation evaluated in left-to-right order:

M out = (Msc)-1 * (Msr)-1 * Ms * Msr * Msc * (Mrc)-1 * Mr * Mrc * Mt

where:

The return value for this method is the same value returned in the pOut parameter. Resultantly, the Transformation2D method can be used as a parameter for another method.

For 3-D transformations, use Transformation.

See Also


© 2004 Microsoft Corporation. All rights reserved. Terms of use.

Feedback? Please provide us with your comments on this topic.
For more help, visit the DirectX Developer Center