IDirectSound3DListener::SetOrientation
The IDirectSound3DListener::SetOrientation method sets the listener's current orientation in terms of two vectors: a front vector and a top vector.
HRESULT SetOrientation(
D3DVALUE xFront,
D3DVALUE yFront,
D3DVALUE zFront,
D3DVALUE xTop,
D3DVALUE yTop,
D3DVALUE zTop,
DWORD dwApply
);
Parameters
xFront, yFront, and zFront
Values whose types are D3DVALUE and that represent the coordinates of the front orientation vector.
xTop, yTop, and zTop
Values whose types are D3DVALUE and that represent the coordinates of the top orientation vector.
dwApply
Value indicating when the setting should be applied. This value must be one of the following:
| DS3D_DEFERRED | Settings are not applied until the application calls the IDirectSound3DListener::CommitDeferredSettings method. This allows the application to change several settings and generate a single recalculation. |
| DS3D_IMMEDIATE | Settings are applied immediately, causing the system to recalculate the 3-D coordinates for all 3-D sound buffers. |
Return Values
If the method succeeds, the return value is DS_OK.
If the method fails, the return value may be DSERR_INVALIDPARAM.
Remarks
The front vector points in the direction of the listener's nose, and the top vector points out the top of the listener's head. By default, the front vector is (0,0,1.0) and the top vector is (0,1.0,0).
The top vector must be at right angles to the front vector. If necessary, DirectSound adjusts the front vector after setting the top vector.
QuickInfo
Windows NT: Use version 5.0 or later.
Windows: Use Windows 95 OSR2 or later. Available as a redistributable for Windows 95.
Windows CE: Unsupported.
Header: Declared in dsound.h.
Import Library: Use dsound.lib.
See Also