public override RibbonParameters GetHoldRibbonParameters(RuntimeNote startNote, RuntimeNote endNote, float now, NoteMetrics noteMetrics, NoteAnimationMetrics animationMetrics)
{
var tp1 = NoteAnimationHelper.CalculateNoteTimePoints(startNote, animationMetrics);
var tp2 = NoteAnimationHelper.CalculateNoteTimePoints(endNote, animationMetrics);
var t1 = GetTransformedTime(startNote, now, tp1);
var t2 = GetTransformedTime(endNote, now, tp2);
var tperc = startNote.IsHold() ? 0.5 : 0.4;
var tm = MathHelperEx.Lerp(t1, t2, tperc);
var x1 = GetNoteX(startNote, now, noteMetrics, animationMetrics);
var x2 = GetNoteX(endNote, now, noteMetrics, animationMetrics);
var startStatus = NoteAnimationHelper.GetOnStageStatusOf(startNote, now, tp1);
float y1;
if (startStatus == OnStageStatus.Passed)
{
y1 = animationMetrics.Bottom;
}
else
{
y1 = GetNoteOnStageY(t1, animationMetrics);
}
var endStatus = NoteAnimationHelper.GetOnStageStatusOf(endNote, now, tp2);
float y2;
if (endStatus == OnStageStatus.Incoming)
{
y2 = animationMetrics.Top;
}
else
{
y2 = GetNoteOnStageY(t2, animationMetrics);
}
// CGSS-like
//var xm = GetNoteOnStageX(endNote.StartX, endNote.EndX, tm, animationMetrics);
// Naive guess
//var xm = (x1 + x2) / 2;
var xm = MathHelperEx.Lerp(x1, x2, 0.5f);
if (startNote.IsSlide())
{
if (endNote.EndX < startNote.EndX)
{
xm -= animationMetrics.Width * 0.02f * ((tp2.Leave - now) / (tp2.Leave - tp1.Enter));
}
else if (endNote.EndX > startNote.EndX)
{
xm += animationMetrics.Width * 0.02f * ((tp2.Leave - now) / (tp2.Leave - tp1.Enter));
}
}
var ym = GetNoteOnStageY(tm, animationMetrics);
var(cx1, cx2) = GetBezierFromQuadratic(x1, xm, x2);
var(cy1, cy2) = GetBezierFromQuadratic(y1, ym, y2);
return(new RibbonParameters(x1, y1, cx1, cy1, cx2, cy2, x2, y2));
}
public override RibbonParameters GetSlideRibbonParameters(RuntimeNote startNote, RuntimeNote endNote, float now, NoteMetrics noteMetrics, NoteAnimationMetrics animationMetrics)
{
var tp1 = NoteAnimationHelper.CalculateNoteTimePoints(startNote, animationMetrics);
var thisStatus = NoteAnimationHelper.GetOnStageStatusOf(startNote, now, tp1);
if (thisStatus < OnStageStatus.Passed)
{
return(GetHoldRibbonParameters(startNote, endNote, now, noteMetrics, animationMetrics));
}
var tp2 = NoteAnimationHelper.CalculateNoteTimePoints(endNote, animationMetrics);
var t1 = GetTransformedTime(startNote, now, tp1);
var t2 = GetTransformedTime(endNote, now, tp2);
var tperc = startNote.IsHold() ? 0.5 : 0.4;
var tm = MathHelperEx.Lerp(t1, t2, tperc);
var trackCount = animationMetrics.TrackCount;
var leftMarginRatio = animationMetrics.NoteEndXRatios[0];
var rightMarginRatio = animationMetrics.NoteEndXRatios[trackCount - 1];
var startXRatio = leftMarginRatio + (rightMarginRatio - leftMarginRatio) * (startNote.EndX / (trackCount - 1));
var endXRatio = leftMarginRatio + (rightMarginRatio - leftMarginRatio) * (endNote.EndX / (trackCount - 1));
var perc = (now - startNote.HitTime) / (endNote.HitTime - startNote.HitTime);
var x1Ratio = MathHelperEx.Lerp(startXRatio, endXRatio, perc);
var x1 = animationMetrics.Width * x1Ratio;
var y1 = animationMetrics.Bottom;
var x2 = GetNoteX(endNote, now, noteMetrics, animationMetrics);
var y2 = GetNoteOnStageY(t2, animationMetrics);
// CGSS-like
//var xm = GetNoteOnStageX(endNote.StartX, endNote.EndX, tm, animationMetrics);
// Naive guess
//var xm = (x1 + x2) / 2;
var xm = MathHelperEx.Lerp(x1, x2, 0.5f);
if (startNote.IsSlide())
{
if (endNote.EndX < startNote.EndX)
{
xm -= animationMetrics.Width * 0.02f * ((tp2.Leave - now) / (tp2.Leave - tp1.Enter));
}
else if (endNote.EndX > startNote.EndX)
{
xm += animationMetrics.Width * 0.02f * ((tp2.Leave - now) / (tp2.Leave - tp1.Enter));
}
}
var ym = GetNoteOnStageY(tm, animationMetrics);
var(cx1, cx2) = GetBezierFromQuadratic(x1, xm, x2);
var(cy1, cy2) = GetBezierFromQuadratic(y1, ym, y2);
return(new RibbonParameters(x1, y1, cx1, cy1, cx2, cy2, x2, y2));
}
private static float GetIncomingNoteXRatio(RuntimeNote prevNote, RuntimeNote thisNote, float now, NoteAnimationMetrics animationMetrics)
{
var trackCount = animationMetrics.TrackCount;
var startLeftMarginRatio = animationMetrics.NoteStartXRatios[0];
var startRightMarginRatio = animationMetrics.NoteStartXRatios[trackCount - 1];
float xRatio;
if (thisNote.IsSlide())
{
var thisXRatio = startLeftMarginRatio + (startRightMarginRatio - startLeftMarginRatio) * (prevNote.EndX / (trackCount - 1));
var nextXRatio = startLeftMarginRatio + (startRightMarginRatio - startLeftMarginRatio) * (thisNote.EndX / (trackCount - 1));
var thisTimePoints = NoteAnimationHelper.CalculateNoteTimePoints(prevNote, animationMetrics);
var nextTimePoints = NoteAnimationHelper.CalculateNoteTimePoints(thisNote, animationMetrics);
var perc = (now - thisTimePoints.Enter) / (nextTimePoints.Enter - thisTimePoints.Enter);
xRatio = MathHelperEx.Lerp(thisXRatio, nextXRatio, perc);
}
else
{
float nextStartX;
if (thisNote.StartX < 0)
{
nextStartX = thisNote.StartX * 0.5f;
}
else if (thisNote.StartX > trackCount - 1)
{
nextStartX = (trackCount - 1) + (thisNote.StartX - (trackCount - 1)) * 0.5f;
}
else
{
nextStartX = thisNote.StartX;
}
xRatio = startLeftMarginRatio + (startRightMarginRatio - startLeftMarginRatio) * (nextStartX / (trackCount - 1));
}
return(xRatio);
}
public override float GetNoteX(RuntimeNote note, double now, NoteMetrics noteMetrics, NoteAnimationMetrics animationMetrics)
{
if (note.IsSlide() && note.HasNextSlide())
{
var thisStatus = NoteAnimationHelper.GetOnStageStatusOf(note, now, animationMetrics);
if (thisStatus >= OnStageStatus.Passed)
{
var nextSlide = note.NextSlide;
var nextStatus = NoteAnimationHelper.GetOnStageStatusOf(nextSlide, now, animationMetrics);
if (nextStatus < OnStageStatus.Passed)
{
var x1 = GetEndXByNotePosition(note.EndX, animationMetrics);
var x2 = GetEndXByNotePosition(nextSlide.EndX, animationMetrics);
return((float)((now - note.HitTime) / (nextSlide.HitTime - note.HitTime)) * (x2 - x1) + x1);
}
}
}
var transformedTime = GetTransformedTime(note, now, animationMetrics);
return(GetNoteXByTransformedTime(note, transformedTime, animationMetrics));
}
public override float GetNoteX(RuntimeNote note, float now, NoteMetrics noteMetrics, NoteAnimationMetrics animationMetrics)
{
var trackCount = animationMetrics.TrackCount;
var endLeftMarginRatio = animationMetrics.NoteEndXRatios[0];
var endRightMarginRatio = animationMetrics.NoteEndXRatios[trackCount - 1];
var endXRatio = endLeftMarginRatio + (endRightMarginRatio - endLeftMarginRatio) * (note.EndX / (trackCount - 1));
var onStage = NoteAnimationHelper.GetOnStageStatusOf(note, now, animationMetrics);
float xRatio;
switch (onStage)
{
case OnStageStatus.Incoming:
if (note.HasPrevHold())
{
xRatio = GetIncomingNoteXRatio(note.PrevHold, note, now, animationMetrics);
}
else if (note.HasPrevSlide())
{
xRatio = GetIncomingNoteXRatio(note.PrevSlide, note, now, animationMetrics);
}
else
{
xRatio = endXRatio;
}
break;
case OnStageStatus.Passed:
if (note.HasNextSlide())
{
var destXRatio = endLeftMarginRatio + (endRightMarginRatio - endLeftMarginRatio) * (note.NextSlide.EndX / (trackCount - 1));
var nextPerc = (now - note.HitTime) / (note.NextSlide.HitTime - note.HitTime);
xRatio = MathHelperEx.Lerp(endXRatio, destXRatio, nextPerc);
}
else
{
xRatio = endXRatio;
}
break;
default:
var startLeftMarginRatio = animationMetrics.NoteStartXRatios[0];
var startRightMarginRatio = animationMetrics.NoteStartXRatios[trackCount - 1];
float whichStartToTake;
if (note.IsSlide())
{
whichStartToTake = note.EndX;
}
else
{
if (note.StartX < 0)
{
whichStartToTake = note.StartX * 0.5f;
}
else if (note.StartX > trackCount - 1)
{
whichStartToTake = (trackCount - 1) + (note.StartX - (trackCount - 1)) * 0.5f;
}
else
{
whichStartToTake = note.StartX;
}
}
var startXRatio = startLeftMarginRatio + (startRightMarginRatio - startLeftMarginRatio) * (whichStartToTake / (trackCount - 1));
var timePoints = NoteAnimationHelper.CalculateNoteTimePoints(note, animationMetrics);
var perc = (now - timePoints.Enter) / timePoints.Duration;
xRatio = MathHelperEx.Lerp(startXRatio, endXRatio, perc);
break;
}
return(animationMetrics.Width * xRatio);
}