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));
}