| Microsoft DirectX 9.0 |
The GetVelocity method retrieves the velocity of the sound source.
Syntax
HRESULT GetVelocity(
D3DVECTOR * pvVelocity
);
Parameters
pvVelocity
Address of a D3DVECTOR structure that receives the sound buffer's velocity, in meters per second by default.
Return Values
If the method succeeds, the return value is DS_OK.
If the method fails, the return value may be DSERR_INVALIDPARAM.
Remarks
Velocity is used for Doppler effects only. It does not actually move the buffer. For more information, see Doppler Effect.
The default unit of measurement is meters per second, but this can be changed by using the IDirectSound3DListener8::SetDistanceFactor method.
Requirements
Header: Declared in dsound.h.
See Also