76 lines
2.4 KiB
C#
76 lines
2.4 KiB
C#
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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namespace Dreamteck.Splines
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{
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[System.Serializable]
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public class RotationModifier : SplineSampleModifier
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{
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[System.Serializable]
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public class RotationKey : Key
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{
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public bool useLookTarget = false;
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public Transform target = null;
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public Vector3 rotation = Vector3.zero;
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public RotationKey(Vector3 rotation, double f, double t) : base(f, t)
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{
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this.rotation = rotation;
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}
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}
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public RotationKey[] keys = new RotationKey[0];
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public RotationModifier()
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{
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keys = new RotationKey[0];
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}
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public override List<Key> GetKeys()
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{
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return new List<Key>(keys);
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}
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public override void SetKeys(List<Key> input)
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{
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keys = new RotationKey[input.Count];
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for (int i = 0; i < input.Count; i++)
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{
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keys[i] = (RotationKey)input[i];
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}
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base.SetKeys(input);
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}
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public void AddKey(Vector3 rotation, double f, double t)
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{
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ArrayUtility.Add(ref keys, new RotationKey(rotation, f, t));
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}
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public override void Apply(ref SplineSample result)
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{
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if (keys.Length == 0) return;
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base.Apply(ref result);
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Quaternion offset = Quaternion.identity, look = result.rotation;
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for (int i = 0; i < keys.Length; i++)
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{
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if (keys[i].useLookTarget && keys[i].target != null)
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{
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Quaternion lookDir = Quaternion.LookRotation(keys[i].target.position - result.position);
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look = Quaternion.Slerp(look, lookDir, keys[i].Evaluate(result.percent) * blend);
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}
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else
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{
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Quaternion euler = Quaternion.Euler(keys[i].rotation.x, keys[i].rotation.y, keys[i].rotation.z);
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offset = Quaternion.Slerp(offset, offset * euler, keys[i].Evaluate(result.percent) * blend);
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}
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}
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Quaternion rotation = look * offset;
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Vector3 invertedNormal = Quaternion.Inverse(result.rotation) * result.up;
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result.forward = rotation * Vector3.forward;
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result.up = rotation * invertedNormal;
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}
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}
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}
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