102 lines
4.0 KiB
C#
102 lines
4.0 KiB
C#
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using UnityEngine;
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using UnityEngine.UI;
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using System.Collections;
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using System;
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using System.Reflection;
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#if UNITY_EDITOR
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using UnityEditor;
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#endif
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namespace MoreMountains.Tools
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{
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/// <summary>
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/// This class will let you create and save a .curves asset in the specified path
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/// This asset will include curves (anti or not) from the MMTween library, to use anywhere animation curves are required
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/// </summary>
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public class MMAnimationCurveGenerator : MonoBehaviour
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{
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[Header("Save settings")]
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/// the path to save the asset at
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public string AnimationCurveFilePath = "Assets/MMTools/MMTween/Editor/";
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/// the name of the asset
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public string AnimationCurveFileName = "MMCurves.curves";
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[Header("Animation Curves")]
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/// the dots resolution (higher is better)
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public int Resolution = 50;
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/// whether to generate anti curves (y goes from 1 to 0) or regular ones (y goes from 0 to 1)
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public bool GenerateAntiCurves = false;
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[MMInspectorButton("GenerateAnimationCurvesAsset")]
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public bool GenerateAnimationCurvesButton;
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protected Type _scriptableObjectType;
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protected Keyframe _keyframe = new Keyframe();
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protected MethodInfo _addMethodInfo;
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protected object[] _parameters;
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/// <summary>
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/// Generates the asset and saves it at the requested path
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/// </summary>
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public virtual void GenerateAnimationCurvesAsset()
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{
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// we get the method to add to our object
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_scriptableObjectType = Type.GetType("UnityEditor.CurvePresetLibrary, UnityEditor");
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_addMethodInfo = _scriptableObjectType.GetMethod("Add");
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// we create a new instance of our curve asset
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ScriptableObject curveAsset = ScriptableObject.CreateInstance(_scriptableObjectType);
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// for each type of curve, we create an animation curve
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foreach (MMTween.MMTweenCurve curve in Enum.GetValues(typeof(MMTween.MMTweenCurve)))
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{
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CreateAnimationCurve(curveAsset, curve, Resolution, GenerateAntiCurves);
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}
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// we save it to file
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#if UNITY_EDITOR
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AssetDatabase.CreateAsset(curveAsset, AnimationCurveFilePath + AnimationCurveFileName);
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AssetDatabase.SaveAssets();
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AssetDatabase.Refresh();
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#endif
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}
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/// <summary>
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/// Creates an animation curve of the specified type and resolution, and adds it to the specified asset
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/// </summary>
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/// <param name="asset"></param>
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/// <param name="curveType"></param>
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/// <param name="curveResolution"></param>
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/// <param name="anti"></param>
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protected virtual void CreateAnimationCurve(ScriptableObject asset, MMTween.MMTweenCurve curveType, int curveResolution, bool anti)
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{
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// generates an animation curve
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AnimationCurve animationCurve = new AnimationCurve();
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for (int i = 0; i < curveResolution; i++)
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{
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_keyframe.time = i / (curveResolution - 1f);
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if (anti)
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{
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_keyframe.value = MMTween.Tween(_keyframe.time, 0f, 1f, 1f, 0f, curveType);
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}
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else
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{
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_keyframe.value = MMTween.Tween(_keyframe.time, 0f, 1f, 0f, 1f, curveType);
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}
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animationCurve.AddKey(_keyframe);
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}
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// smoothes the curve's tangents
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for (int j = 0; j < curveResolution; j++)
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{
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animationCurve.SmoothTangents(j, 0f);
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}
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// we add the curve to the scriptable object
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_parameters = new object[] { animationCurve, curveType.ToString() };
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_addMethodInfo.Invoke(asset, _parameters);
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}
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}
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}
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