Scripts/Runtime/Internal/Context.cs

   1 //
   2 // Context.cs
   3 // JurassicTween
   4 //
   5 // Created by Benjamin Sherratt on 04/05/2021.
   6 // Copyright © 2021 SKFX Ltd. All rights reserved.
   7 //
   8
   9 using System;
  10 using UnityEngine;
  11
  12 namespace JurassicTween.Internal {
  13     class Context : IDisposable {
  14         private Component component;
  15         private IComponentStateCaptor componentStateCaptor;
  16         private ComponentState startState;
  17         private float time;
  18         private TweenParameters tweenParameters;
  19
  20         public Context(Component component, float time, TweenParameters tweenParameters) {
  21             this.component = component;
  22             componentStateCaptor = component.GetStateCaptor();
  23             startState = componentStateCaptor.GetComponentState(component);
  24
  25             this.time = time;
  26             this.tweenParameters = tweenParameters;
  27         }
  28
  29         public void Dispose() {
  30             ComponentState endState = componentStateCaptor.GetComponentState(component);
  31
  32             ComponentStateDelta delta = componentStateCaptor.GenerateComponentStateDelta(startState, endState);
  33
  34             Animation animation = component.gameObject.GetComponent<Animation>();
  35             if (animation == null) {
  36                 animation = component.gameObject.AddComponent<Animation>();
  37             }
  38
  39             string currentClipName = "jurassicTween";
  40             AnimationClip animationClip = animation.GetClip(currentClipName);
  41             if (animationClip == null) {
  42                 animationClip = new AnimationClip();
  43                 animationClip.legacy = true;
  44                 animationClip.name = currentClipName;
  45                 animation.AddClip(animationClip, animationClip.name);
  46             }
  47
  48             foreach (string key in delta.rangeByAnimationKey.Keys) {
  49                 ComponentStateDelta.Range range = delta.rangeByAnimationKey[key];
  50
  51                 AnimationCurve curve;
  52                 switch (tweenParameters.interpolation) {
  53                 case TweenParameters.Interpolation.Linear:
  54                     curve = AnimationCurve.Linear(0, range.start, time, range.end);
  55                     break;
  56
  57                 case TweenParameters.Interpolation.EaseInOut:
  58                     curve = AnimationCurve.EaseInOut(0, range.start, time, range.end);
  59                     break;
  60
  61                 case TweenParameters.Interpolation.CustomCurve:
  62                     curve = new AnimationCurve();
  63                     foreach (Keyframe referenceKeyframe in tweenParameters.customCurve.keys) {
  64                         Keyframe keyframe = new Keyframe(
  65                             Mathf.Lerp(0.0f, time, referenceKeyframe.time),
  66                             Mathf.Lerp(range.start, range.end, referenceKeyframe.value),
  67                             referenceKeyframe.inTangent,
  68                             referenceKeyframe.outTangent,
  69                             referenceKeyframe.inWeight,
  70                             referenceKeyframe.outWeight);
  71                         curve.AddKey(keyframe);
  72                     }
  73                     break;
  74
  75                 default:
  76                     throw new Exception("We shouldn't be here");
  77                 }
  78
  79                 animationClip.SetCurve("", component.GetType(), key, curve);
  80             }
  81
  82             animation.Play(animationClip.name);
  83         }
  84     }
  85 }