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MRCC/launcher/PCL-CE/PCL.Core/Utils/EaseUtils.cs
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feat: 项目初始化 + 3D方块世界原型 + AI助搭系统
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2026-08-08 14:07:56 +08:00

34 lines
1.4 KiB
C#

namespace PCL.Core.Utils;
internal static class EaseUtils
{
// 预计算常量
private const double BounceN1 = 7.5625;
private const double BounceInvD1 = 0.3636363636363636; // 1 / 2.75
private const double BounceThreshold2 = 0.7272727272727273; // 2 / 2.75
private const double BounceThreshold3 = 0.9090909090909091; // 2.5 / 2.75
private const double BounceOffset1 = 0.5454545454545454; // 1.5 / 2.75
private const double BounceOffset2 = 0.8181818181818182; // 2.25 / 2.75
private const double BounceOffset3 = 0.9545454545454546; // 2.625 / 2.75
internal const double ElasticLn2Times10 = 6.931471805599453; // Math.Log(2d) * 10d
internal const double ElasticPiTimes6Point5 = 20.420352248333657; // Math.PI * 6.5d
internal static double Bounce(double progress)
{
switch (progress)
{
case < BounceInvD1:
return BounceN1 * progress * progress;
case < BounceThreshold2:
progress -= BounceOffset1;
return BounceN1 * progress * progress + 0.75;
case < BounceThreshold3:
progress -= BounceOffset2;
return BounceN1 * progress * progress + 0.9375;
default:
progress -= BounceOffset3;
return BounceN1 * progress * progress + 0.984375;
}
}
}