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[+] Slide code support & split multiple patches (#77)
* 功能拆分 将不同的功能分拆到不同文件 * Slide code notation support This is part of Maimai DX 2077 patch set. New MA2 commands: NMSSS, BRSSS, EXSSS, BXSSS, CNSSS
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Minepig
226
AquaMai/MaimaiDX2077/ParametricSlidePath.cs
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226
AquaMai/MaimaiDX2077/ParametricSlidePath.cs
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Numerics;
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using DB;
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using Manager;
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namespace AquaMai.MaimaiDX2077;
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public class ParametricSlidePath
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{
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public enum ParseMarker
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{
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None = 0,
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SmoothAlign,
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ForceAlign,
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SharpCorner
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}
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public abstract class PathSegment
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{
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public ParseMarker ParseMarker = ParseMarker.None;
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public double ArrowDistance = MaiGeometry.DefaultDistance;
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public abstract bool DoAngleLerp { get; }
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public abstract Complex GetPointAt(double t);
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public abstract Complex GetTangentAt(double t);
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public abstract double GetSegmentLength();
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public void SetParseMarker(ParseMarker marker) => ParseMarker = marker;
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public void SetArrowDistance(double distance) => ArrowDistance = distance;
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}
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public class LineSegment(Complex start, Complex end) : PathSegment
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{
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public readonly Complex StartPoint = start;
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public readonly Complex EndPoint = end;
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public override bool DoAngleLerp { get; } = false;
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public override Complex GetPointAt(double t)
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{
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return StartPoint + (EndPoint - StartPoint) * t;
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}
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public override Complex GetTangentAt(double t)
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{
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var v = EndPoint - StartPoint;
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return v / v.Magnitude;
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}
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public override double GetSegmentLength()
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{
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return (EndPoint - StartPoint).Magnitude;
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}
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}
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public class ArcSegment(MaiGeometry.CircleStruct circle, double startAngle, double endAngle) : PathSegment
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{
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public readonly MaiGeometry.CircleStruct Circle = circle;
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public readonly double StartAngle = startAngle;
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public readonly double EndAngle = endAngle;
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public override bool DoAngleLerp { get; } = true;
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public override Complex GetPointAt(double t)
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{
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var angle = StartAngle + t * (EndAngle - StartAngle);
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return Circle.Center + Complex.FromPolarCoordinates(Circle.Radius, angle);
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}
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public override Complex GetTangentAt(double t)
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{
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var angle = StartAngle + t * (EndAngle - StartAngle);
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if (StartAngle < EndAngle)
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{
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return Complex.FromPolarCoordinates(1, angle) * Complex.ImaginaryOne;
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}
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else
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{
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return Complex.FromPolarCoordinates(-1, angle) * Complex.ImaginaryOne;
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}
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}
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public override double GetSegmentLength()
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{
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return Math.Abs(EndAngle - StartAngle) * Circle.Radius;
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}
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}
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public class CircleSegment(MaiGeometry.CircleStruct circle, double startAngle, bool isCcw) : PathSegment
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{
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public readonly MaiGeometry.CircleStruct Circle = circle;
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public readonly double StartAngle = startAngle;
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public readonly bool IsCcw = isCcw;
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public override bool DoAngleLerp { get; } = true;
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public override Complex GetPointAt(double t)
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{
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double angle;
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if (IsCcw)
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{
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angle = StartAngle + t * Math.PI * 2f;
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}
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else
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{
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angle = StartAngle - t * Math.PI * 2f;
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}
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return Circle.Center + Complex.FromPolarCoordinates(Circle.Radius, angle);
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}
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public override Complex GetTangentAt(double t)
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{
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double angle;
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if (IsCcw)
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{
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angle = StartAngle + t * Math.PI * 2f;
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return Complex.FromPolarCoordinates(1, angle) * Complex.ImaginaryOne;
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}
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else
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{
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angle = StartAngle - t * Math.PI * 2f;
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return Complex.FromPolarCoordinates(-1, angle) * Complex.ImaginaryOne;
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}
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}
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public override double GetSegmentLength()
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{
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return Math.PI * Circle.Radius * 2;
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}
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}
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public readonly PathSegment[] Segments;
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public readonly double[] Fractions;
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public readonly double[] AccumulatedLengths;
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public ParametricSlidePath(IEnumerable<PathSegment> pathSegments)
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{
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Segments = pathSegments.ToArray();
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if (Segments.Length == 0)
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{
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throw new ArgumentException("At least one path segment is required.");
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}
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var lengths = Segments.Select(s => s.GetSegmentLength());
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var sum = 0.0;
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AccumulatedLengths = lengths.Select(x => (sum += x)).ToArray();
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Fractions = AccumulatedLengths.Select(x => x / sum).ToArray();
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}
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public PathSegment GetSegmentAt(double t, out double segmentT)
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{
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if (t <= 0.0)
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{
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segmentT = 0.0;
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return Segments[0];
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}
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if (t >= 1.0)
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{
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segmentT = 1.0;
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return Segments[Segments.Length - 1];
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}
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var idx = Array.BinarySearch(Fractions, t);
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if (idx < 0)
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{
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idx = ~idx; // first entry > t
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}
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// if idx >= 0 then idx is the entry == t
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// so Fractions[idx-1] < t and Fractions[idx] >= t
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// Note: Fractions[i] marks the end point of Segments[i]
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if (idx >= Segments.Length)
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{
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segmentT = 1.0;
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return Segments[Segments.Length - 1];
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}
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if (idx == 0)
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{
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segmentT = t / Fractions[0];
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return Segments[0];
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}
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segmentT = (t - Fractions[idx - 1]) / (Fractions[idx] - Fractions[idx - 1]);
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return Segments[idx];
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}
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public double GetPathLength() => AccumulatedLengths[AccumulatedLengths.Length - 1];
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public Complex GetPointAt(double t)
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{
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var segment = GetSegmentAt(t, out var segT);
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return segment.GetPointAt(segT);
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}
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public Complex GetTangentAt(double t)
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{
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var segment = GetSegmentAt(t, out var segT);
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return segment.GetTangentAt(segT);
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}
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public SlideType GetEndType(OptionMirrorID mirrorMode)
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{
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var lastSegment = Segments[Segments.Length - 1];
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var flip = mirrorMode == OptionMirrorID.LR || mirrorMode == OptionMirrorID.UD;
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if (lastSegment is CircleSegment circle)
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{
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return circle.IsCcw != flip ? SlideType.Slide_Circle_L : SlideType.Slide_Circle_R;
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}
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if (lastSegment is ArcSegment arc)
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{
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return (arc.EndAngle > arc.StartAngle) != flip ? SlideType.Slide_Circle_L : SlideType.Slide_Circle_R;
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}
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return SlideType.Slide_Straight;
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}
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}
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