IDirectSound3DBuffer8::GetVelocity

The GetVelocity method retrieves the velocity of the sound source.

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 SetDistanceFactor method.

Requirements

Header: Declared in Dsound.h.

Import Library: Use Dsound3d.dll.

See Also

IDirectSound3DBuffer8