Microsoft DirectX 9.0 SDK Update (Summer 2004) |
DMUS_IO_STYLE_ANTICIPATION
The DMUS_IO_STYLE_ANTICIPATION structure describes a resolution anticipation. Used in the Style Form.
Syntax
typedef struct _DMUS_IO_STYLE_ANTICIPATION {
MUSIC_TIME mtGridStart;
DWORD dwVariation;
short nTimeOffset;
BYTE bTimeRange;
} DMUS_IO_STYLE_ANTICIPATION;
Members
mtGridStart
Offset within the part, in grids, at which the event is to play. See Remarks.
dwVariation
Variations, where each bit set specifies a valid variation.
nTimeOffset
Offset of the time from mtGridStart.
bTimeRange
Range by which to randomize time. See Remarks.
Remarks
The time of the event can be calculated as follows, where TimeSig is a DMUS_IO_TIMESIG structure containing the time signature:
mtEventTime = nTimeOffset + ((mtGridStart / TimeSig.wGridsPerBeat) *
((DMUS_PPQ * 4) / TimeSig.bBeat) + (mtGridStart %
TimeSig.wGridsPerBeat) * (((DMUS_PPQ * 4)/ TimeSig.bBeat) /
TimeSig.wGridsPerBeat))
The value in bTimeRange is converted to music time when the event occurs, according to the formula given in the Remarks to DMUS_IO_STYLENOTE.
Requirements
Header: Declared in dmusicf.h.
See Also
© 2004 Microsoft Corporation. All rights reserved.