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Switch-Toolbox/Switch_Toolbox_Library/Animations/AnimationRewrite/STAnimationTrack.cs

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C#
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Toolbox.Library.Animations
{
public class STAnimationTrack
{
public string Name { get; set; }
public STInterpoaltionType InterpolationType { get; set; }
public List<STKeyFrame> KeyFrames = new List<STKeyFrame>();
public bool HasKeys => KeyFrames.Count > 0;
public bool IsKeyed(float frame)
{
var matches = KeyFrames.Where(p => p.Frame == frame);
return matches != null && matches.Count() > 0;
}
//Key frame setup based on
//https://github.com/gdkchan/SPICA/blob/42c4181e198b0fd34f0a567345ee7e75b54cb58b/SPICA/Formats/CtrH3D/Animation/H3DFloatKeyFrameGroup.cs
public float GetFrameValue(float frame, float startFrame = 0)
{
if (KeyFrames.Count == 0) return 0;
if (KeyFrames.Count == 1) return KeyFrames[0].Value;
STKeyFrame LK = KeyFrames.First();
STKeyFrame RK = KeyFrames.Last();
float Frame = frame - startFrame;
foreach (STKeyFrame keyFrame in KeyFrames)
{
if (keyFrame.Frame <= Frame) LK = keyFrame;
if (keyFrame.Frame >= Frame && keyFrame.Frame < RK.Frame) RK = keyFrame;
}
if (LK.Frame != RK.Frame)
{
float FrameDiff = Frame - LK.Frame;
float Weight = FrameDiff / (RK.Frame - LK.Frame);
switch (InterpolationType)
{
case STInterpoaltionType.Constant: return LK.Value;
case STInterpoaltionType.Step: return LK.Value;
case STInterpoaltionType.Linear: return InterpolationHelper.Lerp(LK.Value, RK.Value, Weight);
case STInterpoaltionType.Hermite:
return InterpolationHelper.Herp(
LK.Value, RK.Value,
LK.Slope, RK.Slope,
FrameDiff,
Weight);
}
}
return LK.Value;
}
}
}