31 lines
1.4 KiB
C#
31 lines
1.4 KiB
C#
using System;
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using System.Numerics;
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using Godot;
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namespace SpaceCapture;
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public static class Utils
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{
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/// <summary>
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/// Time-independent damping with exponential-decay.
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/// </summary>
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/// <param name="current">Current value.</param>
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/// <param name="target">Target value.</param>
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/// <param name="smoothing">The proportion of <paramref name="current"/> remaining after one second, the rest is <paramref name="target"/>.</param>
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/// <param name="deltaTime">Seconds passed since last invocation.</param>
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/// <typeparam name="T"></typeparam>
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/// <returns></returns>
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public static T Damp<T>(T current, T target, float smoothing, double deltaTime)
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where T : IAdditionOperators<T, T, T>, ISubtractionOperators<T, T, T>, IMultiplyOperators<T, float, T>
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=> Lerp(current, target, (float)(1d - Math.Pow(smoothing, deltaTime)));
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/// <inheritdoc cref="Damp{T}(T, T, float, double)" />
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public static Godot.Vector2 Damp(Godot.Vector2 current, Godot.Vector2 target, float smoothing, double deltaTime)
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=> current.Lerp(target, (float)(1d - Math.Pow(smoothing, deltaTime)));
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/// <inheritdoc cref="Mathf.Lerp(double, double, double)"/>
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/// <typeparam name="T"></typeparam>
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public static T Lerp<T>(T from, T to, float weight)
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where T : IAdditionOperators<T, T, T>, ISubtractionOperators<T, T, T>, IMultiplyOperators<T, float, T>
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=> from + (to - from) * weight;
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}
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