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Comments + xmldocs

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This commit is contained in:
smoogipoo 2018-04-20 13:51:36 +09:00
parent ea0683adb2
commit 1bab601cbc
1 changed files with 26 additions and 5 deletions
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31
osu.Game/Rulesets/UI/Scrolling/Visualisers/OverlappingSpeedChangeVisualiser.cs
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@ -23,21 +23,24 @@ namespace osu.Game.Rulesets.UI.Scrolling.Visualisers
{
foreach (var obj in hitObjects)
{
// For optimal lifetimes, the speed of the hitobject is factored into the time range
obj.LifetimeStart = obj.HitObject.StartTime - timeRange / controlPointAt(obj.HitObject.StartTime).Multiplier;
if (obj.HitObject is IHasEndTime endTime)
{
var diff = -positionAt(endTime.EndTime, obj, timeRange);
// At the hitobject's end time, the hitobject will be positioned such that its end rests at the origin.
// This results in a negative-position value, and the absolute of it indicates the length of the hitobject.
var hitObjectLength = -hitObjectPositionAt(obj, endTime.EndTime, timeRange);
switch (direction)
{
case ScrollingDirection.Up:
case ScrollingDirection.Down:
obj.Height = (float)(diff * length.Y);
obj.Height = (float)(hitObjectLength * length.Y);
break;
case ScrollingDirection.Left:
case ScrollingDirection.Right:
obj.Width = (float)(diff * length.X);
obj.Width = (float)(hitObjectLength * length.X);
break;
}
}
@ -45,6 +48,8 @@ namespace osu.Game.Rulesets.UI.Scrolling.Visualisers
if (obj.HasNestedHitObjects)
{
ComputeInitialStates(obj.NestedHitObjects, direction, timeRange, length);
// Nested hitobjects don't need to scroll, but they do need accurate positions
ComputePositions(obj.NestedHitObjects, direction, obj.HitObject.StartTime, timeRange, length);
}
}
@ -54,7 +59,7 @@ namespace osu.Game.Rulesets.UI.Scrolling.Visualisers
{
foreach (var obj in hitObjects)
{
var position = positionAt(currentTime, obj, timeRange);
var position = hitObjectPositionAt(obj, currentTime, timeRange);
switch (direction)
{
@ -74,10 +79,26 @@ namespace osu.Game.Rulesets.UI.Scrolling.Visualisers
}
}
private double positionAt(double time, DrawableHitObject obj, double timeRange)
/// <summary>
/// Computes the position of a <see cref="DrawableHitObject"/> at a point in time. <br />
/// At t &lt; startTime, position &gt; 0. <br />
/// At t = startTime, position = 0. <br />
/// At t &gt; startTime, position &lt; 0.
/// </summary>
/// <param name="obj">The <see cref="DrawableHitObject"/>.</param>
/// <param name="time">The time to find the position of <paramref name="obj"/> at.</param>
/// <param name="timeRange">The amount of time visualised by the scrolling area.</param>
/// <returns>The position of <paramref name="obj"/> in the scrolling area at time = <paramref name="time"/>.</returns>
private double hitObjectPositionAt(DrawableHitObject obj, double time, double timeRange)
=> (obj.HitObject.StartTime - time) * controlPointAt(obj.HitObject.StartTime).Multiplier / timeRange;
private readonly MultiplierControlPoint searchPoint = new MultiplierControlPoint();
/// <summary>
/// Finds the <see cref="MultiplierControlPoint"/> which affects the speed of hitobjects at a specific time.
/// </summary>
/// <param name="time">The time which the <see cref="MultiplierControlPoint"/> should affect.</param>
/// <returns>The <see cref="MultiplierControlPoint"/>.</returns>
private MultiplierControlPoint controlPointAt(double time)
{
if (controlPoints.Count == 0)