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eliminate extra fmodf for each rendered tap

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Glenn Maynard
2005-03-12 06:09:43 +00:00
parent 9877a12111
commit dd02f1bc10
1 changed files with 14 additions and 5 deletions
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stepmania/src/NoteDisplay.cpp
+12 -3
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@@ -362,9 +362,12 @@ void NoteDisplay::Update( float fDeltaTime )
void NoteDisplay::SetActiveFrame( float fNoteBeat, Actor &actorToSet, float fAnimationLengthInBeats, bool bVivid, bool bNoteColor ) void NoteDisplay::SetActiveFrame( float fNoteBeat, Actor &actorToSet, float fAnimationLengthInBeats, bool bVivid, bool bNoteColor )
{ {
/* -inf ... inf */
float fSongBeat = GAMESTATE->m_fSongBeat; float fSongBeat = GAMESTATE->m_fSongBeat;
float fPercentIntoAnimation = fmodf(fSongBeat,fAnimationLengthInBeats) / fAnimationLengthInBeats; /* -len ... +len */
float fPercentIntoAnimation = fmodf( fSongBeat, fAnimationLengthInBeats );
/* -1 ... 1 */
fPercentIntoAnimation /= fAnimationLengthInBeats;
if( bVivid ) if( bVivid )
{ {
@@ -374,10 +377,16 @@ void NoteDisplay::SetActiveFrame( float fNoteBeat, Actor &actorToSet, float fAni
const float fFraction = fNoteBeatFraction - 0.25f/fAnimationLengthInBeats; const float fFraction = fNoteBeatFraction - 0.25f/fAnimationLengthInBeats;
const float fInterval = 1.f / fAnimationLengthInBeats; const float fInterval = 1.f / fAnimationLengthInBeats;
fPercentIntoAnimation += Quantize(fFraction,fInterval); fPercentIntoAnimation += Quantize(fFraction,fInterval);
}
// just in case somehow we're majorly negative with the subtraction // just in case somehow we're majorly negative with the subtraction
wrap( fPercentIntoAnimation, 1.f ); wrap( fPercentIntoAnimation, 1.f );
}
else
{
/* 0 ... 1, wrapped */
if( fPercentIntoAnimation < 0 )
fPercentIntoAnimation += 1.0f;
}
float fLengthSeconds = actorToSet.GetAnimationLengthSeconds(); float fLengthSeconds = actorToSet.GetAnimationLengthSeconds();
actorToSet.SetSecondsIntoAnimation( fPercentIntoAnimation*fLengthSeconds ); actorToSet.SetSecondsIntoAnimation( fPercentIntoAnimation*fLengthSeconds );