Matrix.RotationY Method

Article
10/07/2012

Builds a matrix that rotates around the y-axis.

Namespace: Microsoft.WindowsMobile.DirectX
Assembly: Microsoft.WindowsMobile.DirectX (in Microsoft.WindowsMobile.DirectX.dll)

Syntax

'Declaration
Public Shared Function RotationY ( _
    angle As Single _
) As Matrix
'Usage
Dim angle As Single 
Dim returnValue As Matrix 

returnValue = Matrix.RotationY(angle)

public static Matrix RotationY(
    float angle
)

public:
static Matrix RotationY(
    float angle
)

public static function RotationY(
    angle : float
) : Matrix

Parameters

angle
Type: System.Single

Angle of rotation, in radians. Angles are measured clockwise when looking along the rotation axis toward the origin.

Return Value

Type: Microsoft.WindowsMobile.DirectX.Matrix
Rotated Matrix structure.

Examples

The following example shows how to use the RotationY method.

' For the world matrix, rotate the object about the y-axis. 
' Set up the rotation matrix to generate one full rotation (2*PI radians)  
' every 1000 ms. To avoid the loss of precision inherent in very high  
' floating-point numbers, the system time is modulated by the rotation  
' period before conversion to a radian angle. 
Dim iTime As Integer = Environment.TickCount Mod 1000
Dim fAngle As Single = iTime * (2.0F * System.Convert.ToSingle(Math.PI)) / 1000.0F
device.Transform.World = Matrix.RotationY(fAngle)

// For the world matrix, rotate the object about the y-axis. 

// Set up the rotation matrix to generate one full rotation (2*PI radians) 
// every 1000 ms. To avoid the loss of precision inherent in very high 
// floating-point numbers, the system time is modulated by the rotation 
// period before conversion to a radian angle. 
int iTime = Environment.TickCount % 1000;
float fAngle = iTime * (2.0f * (float)Math.PI) / 1000.0f;
device.Transform.World = Matrix.RotationY(fAngle);

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

Platforms

Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information

.NET Compact Framework

Supported in: 3.5, 2.0

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