658 lines
26 KiB
C#
658 lines
26 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using UnityEditorInternal;
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using UnityEngine;
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using Object = UnityEngine.Object;
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namespace UnityEditor.Timeline
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{
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// Utility class for editing animation clips from serialized properties
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static class CurveEditUtility
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{
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static bool IsRotationKey(EditorCurveBinding binding)
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{
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return binding.propertyName.Contains("localEulerAnglesRaw");
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}
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public static void AddKey(AnimationClip clip, EditorCurveBinding sourceBinding, SerializedProperty prop, double time)
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{
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if (sourceBinding.isPPtrCurve)
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{
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AddObjectKey(clip, sourceBinding, prop, time);
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}
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else if (IsRotationKey(sourceBinding))
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{
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AddRotationKey(clip, sourceBinding, prop, time);
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}
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else
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{
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AddFloatKey(clip, sourceBinding, prop, time);
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}
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}
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static void AddObjectKey(AnimationClip clip, EditorCurveBinding sourceBinding, SerializedProperty prop, double time)
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{
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if (prop.propertyType != SerializedPropertyType.ObjectReference)
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return;
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ObjectReferenceKeyframe[] curve = null;
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var info = AnimationClipCurveCache.Instance.GetCurveInfo(clip);
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var curveIndex = Array.IndexOf(info.objectBindings, sourceBinding);
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if (curveIndex >= 0)
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{
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curve = info.objectCurves[curveIndex];
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// where in the array does the evaluation land?
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var evalIndex = EvaluateIndex(curve, (float)time);
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if (KeyCompare(curve[evalIndex].time, (float)time, clip.frameRate) == 0)
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{
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curve[evalIndex].value = prop.objectReferenceValue;
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}
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// check the next key (always return the minimum value)
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else if (evalIndex < curve.Length - 1 && KeyCompare(curve[evalIndex + 1].time, (float)time, clip.frameRate) == 0)
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{
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curve[evalIndex + 1].value = prop.objectReferenceValue;
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}
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// resize the array
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else
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{
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if (time > curve[0].time)
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evalIndex++;
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var key = new ObjectReferenceKeyframe();
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key.time = (float)time;
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key.value = prop.objectReferenceValue;
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ArrayUtility.Insert(ref curve, evalIndex, key);
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}
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}
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else // curve doesn't exist, add it
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{
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curve = new ObjectReferenceKeyframe[1];
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curve[0].time = (float)time;
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curve[0].value = prop.objectReferenceValue;
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}
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AnimationUtility.SetObjectReferenceCurve(clip, sourceBinding, curve);
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EditorUtility.SetDirty(clip);
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}
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static void AddRotationKey(AnimationClip clip, EditorCurveBinding sourceBind, SerializedProperty prop, double time)
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{
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if (prop.propertyType != SerializedPropertyType.Quaternion)
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{
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return;
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}
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var updateCurves = new List<AnimationCurve>();
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var updateBindings = new List<EditorCurveBinding>();
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var info = AnimationClipCurveCache.Instance.GetCurveInfo(clip);
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for (var i = 0; i < info.bindings.Length; i++)
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{
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if (sourceBind.type != info.bindings[i].type)
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continue;
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if (info.bindings[i].propertyName.Contains("localEuler"))
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{
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updateBindings.Add(info.bindings[i]);
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updateCurves.Add(info.curves[i]);
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}
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}
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// use this instead of serialized properties because the editor will attempt to maintain
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// correct localeulers
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var eulers = ((Transform)prop.serializedObject.targetObject).localEulerAngles;
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if (updateBindings.Count == 0)
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{
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var propName = AnimationWindowUtility.GetPropertyGroupName(sourceBind.propertyName);
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updateBindings.Add(EditorCurveBinding.FloatCurve(sourceBind.path, sourceBind.type, propName + ".x"));
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updateBindings.Add(EditorCurveBinding.FloatCurve(sourceBind.path, sourceBind.type, propName + ".y"));
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updateBindings.Add(EditorCurveBinding.FloatCurve(sourceBind.path, sourceBind.type, propName + ".z"));
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var curveX = new AnimationCurve();
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var curveY = new AnimationCurve();
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var curveZ = new AnimationCurve();
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AddKeyFrameToCurve(curveX, (float)time, clip.frameRate, eulers.x, false);
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AddKeyFrameToCurve(curveY, (float)time, clip.frameRate, eulers.y, false);
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AddKeyFrameToCurve(curveZ, (float)time, clip.frameRate, eulers.z, false);
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updateCurves.Add(curveX);
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updateCurves.Add(curveY);
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updateCurves.Add(curveZ);
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}
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for (var i = 0; i < updateBindings.Count; i++)
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{
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var c = updateBindings[i].propertyName.Last();
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var value = eulers.x;
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if (c == 'y') value = eulers.y;
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else if (c == 'z') value = eulers.z;
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AddKeyFrameToCurve(updateCurves[i], (float)time, clip.frameRate, value, false);
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}
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UpdateEditorCurves(clip, updateBindings, updateCurves);
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}
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// Add a floating point curve key
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static void AddFloatKey(AnimationClip clip, EditorCurveBinding sourceBind, SerializedProperty prop, double time)
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{
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var updateCurves = new List<AnimationCurve>();
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var updateBindings = new List<EditorCurveBinding>();
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var updated = false;
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var info = AnimationClipCurveCache.Instance.GetCurveInfo(clip);
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for (var i = 0; i < info.bindings.Length; i++)
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{
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var binding = info.bindings[i];
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if (binding.type != sourceBind.type)
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continue;
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SerializedProperty valProp = null;
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var curve = info.curves[i];
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// perfect match on property path, editting a float
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if (prop.propertyPath.Equals(binding.propertyName))
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{
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valProp = prop;
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}
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// this is a child object
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else if (binding.propertyName.Contains(prop.propertyPath))
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{
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valProp = prop.serializedObject.FindProperty(binding.propertyName);
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}
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if (valProp != null)
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{
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var value = GetKeyValue(valProp);
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if (!float.IsNaN(value)) // Nan indicates an error retrieving the property value
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{
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updated = true;
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AddKeyFrameToCurve(curve, (float)time, clip.frameRate, value, valProp.propertyType == SerializedPropertyType.Boolean);
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updateCurves.Add(curve);
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updateBindings.Add(binding);
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}
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}
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}
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// Curves don't exist, add them
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if (!updated)
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{
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var propName = AnimationWindowUtility.GetPropertyGroupName(sourceBind.propertyName);
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if (!prop.hasChildren)
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{
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var value = GetKeyValue(prop);
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if (!float.IsNaN(value))
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{
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updateBindings.Add(EditorCurveBinding.FloatCurve(sourceBind.path, sourceBind.type, sourceBind.propertyName));
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var curve = new AnimationCurve();
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AddKeyFrameToCurve(curve, (float)time, clip.frameRate, value, prop.propertyType == SerializedPropertyType.Boolean);
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updateCurves.Add(curve);
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}
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}
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else
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{
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// special case because subproperties on color aren't 'visible' so you can't iterate over them
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if (prop.propertyType == SerializedPropertyType.Color)
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{
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updateBindings.Add(EditorCurveBinding.FloatCurve(sourceBind.path, sourceBind.type, propName + ".r"));
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updateBindings.Add(EditorCurveBinding.FloatCurve(sourceBind.path, sourceBind.type, propName + ".g"));
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updateBindings.Add(EditorCurveBinding.FloatCurve(sourceBind.path, sourceBind.type, propName + ".b"));
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updateBindings.Add(EditorCurveBinding.FloatCurve(sourceBind.path, sourceBind.type, propName + ".a"));
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var c = prop.colorValue;
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for (var i = 0; i < 4; i++)
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{
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var curve = new AnimationCurve();
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AddKeyFrameToCurve(curve, (float)time, clip.frameRate, c[i], prop.propertyType == SerializedPropertyType.Boolean);
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updateCurves.Add(curve);
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}
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}
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else
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{
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prop = prop.Copy();
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foreach (SerializedProperty cp in prop)
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{
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updateBindings.Add(EditorCurveBinding.FloatCurve(sourceBind.path, sourceBind.type, cp.propertyPath));
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var curve = new AnimationCurve();
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AddKeyFrameToCurve(curve, (float)time, clip.frameRate, GetKeyValue(cp), cp.propertyType == SerializedPropertyType.Boolean);
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updateCurves.Add(curve);
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}
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}
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}
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}
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UpdateEditorCurves(clip, updateBindings, updateCurves);
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}
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public static void RemoveKey(AnimationClip clip, EditorCurveBinding sourceBinding, SerializedProperty prop, double time)
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{
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if (sourceBinding.isPPtrCurve)
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{
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RemoveObjectKey(clip, sourceBinding, time);
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}
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else if (IsRotationKey(sourceBinding))
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{
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RemoveRotationKey(clip, sourceBinding, prop, time);
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}
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else
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{
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RemoveFloatKey(clip, sourceBinding, prop, time);
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}
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}
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public static void RemoveObjectKey(AnimationClip clip, EditorCurveBinding sourceBinding, double time)
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{
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var info = AnimationClipCurveCache.Instance.GetCurveInfo(clip);
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var curveIndex = Array.IndexOf(info.objectBindings, sourceBinding);
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if (curveIndex >= 0)
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{
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var curve = info.objectCurves[curveIndex];
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var evalIndex = GetKeyframeAtTime(curve, (float)time, clip.frameRate);
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if (evalIndex >= 0)
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{
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ArrayUtility.RemoveAt(ref curve, evalIndex);
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AnimationUtility.SetObjectReferenceCurve(clip, sourceBinding, curve.Length == 0 ? null : curve);
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EditorUtility.SetDirty(clip);
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}
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}
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}
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public static int GetObjectKeyCount(AnimationClip clip, EditorCurveBinding sourceBinding)
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{
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var info = AnimationClipCurveCache.Instance.GetCurveInfo(clip);
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var curveIndex = Array.IndexOf(info.objectBindings, sourceBinding);
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if (curveIndex >= 0)
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{
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var curve = info.objectCurves[curveIndex];
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return curve.Length;
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}
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return 0;
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}
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static void RemoveRotationKey(AnimationClip clip, EditorCurveBinding sourceBind, SerializedProperty prop, double time)
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{
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if (prop.propertyType != SerializedPropertyType.Quaternion)
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{
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return;
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}
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var updateCurves = new List<AnimationCurve>();
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var updateBindings = new List<EditorCurveBinding>();
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var info = AnimationClipCurveCache.Instance.GetCurveInfo(clip);
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for (var i = 0; i < info.bindings.Length; i++)
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{
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if (sourceBind.type != info.bindings[i].type)
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continue;
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if (info.bindings[i].propertyName.Contains("localEuler"))
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{
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updateBindings.Add(info.bindings[i]);
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updateCurves.Add(info.curves[i]);
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}
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}
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foreach (var c in updateCurves)
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{
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RemoveKeyFrameFromCurve(c, (float)time, clip.frameRate);
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}
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UpdateEditorCurves(clip, updateBindings, updateCurves);
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}
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// Removes the float keys from curves
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static void RemoveFloatKey(AnimationClip clip, EditorCurveBinding sourceBind, SerializedProperty prop, double time)
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{
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var updateCurves = new List<AnimationCurve>();
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var updateBindings = new List<EditorCurveBinding>();
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var info = AnimationClipCurveCache.Instance.GetCurveInfo(clip);
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for (var i = 0; i < info.bindings.Length; i++)
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{
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var binding = info.bindings[i];
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if (binding.type != sourceBind.type)
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continue;
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SerializedProperty valProp = null;
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var curve = info.curves[i];
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// perfect match on property path, editting a float
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if (prop.propertyPath.Equals(binding.propertyName))
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{
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valProp = prop;
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}
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// this is a child object
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else if (binding.propertyName.Contains(prop.propertyPath))
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{
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valProp = prop.serializedObject.FindProperty(binding.propertyName);
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}
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if (valProp != null)
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{
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RemoveKeyFrameFromCurve(curve, (float)time, clip.frameRate);
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updateCurves.Add(curve);
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updateBindings.Add(binding);
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}
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}
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// update the curve. Do this last to not mess with the curve caches we are iterating over
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UpdateEditorCurves(clip, updateBindings, updateCurves);
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}
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static void UpdateEditorCurve(AnimationClip clip, EditorCurveBinding binding, AnimationCurve curve)
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{
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if (curve.keys.Length == 0)
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AnimationUtility.SetEditorCurve(clip, binding, null);
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else
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AnimationUtility.SetEditorCurve(clip, binding, curve);
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}
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static void UpdateEditorCurves(AnimationClip clip, List<EditorCurveBinding> bindings, List<AnimationCurve> curves)
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{
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if (curves.Count == 0)
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return;
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for (var i = 0; i < curves.Count; i++)
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{
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UpdateEditorCurve(clip, bindings[i], curves[i]);
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}
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EditorUtility.SetDirty(clip);
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}
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public static void RemoveCurves(AnimationClip clip, SerializedProperty prop)
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{
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if (clip == null || prop == null)
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return;
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var toRemove = new List<EditorCurveBinding>();
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var info = AnimationClipCurveCache.Instance.GetCurveInfo(clip);
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for (var i = 0; i < info.bindings.Length; i++)
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{
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var binding = info.bindings[i];
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||
|
|
// check if we match directly, or with a child object
|
||
|
|
if (prop.propertyPath.Equals(binding.propertyName) || binding.propertyName.Contains(prop.propertyPath))
|
||
|
|
{
|
||
|
|
toRemove.Add(binding);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
for (int i = 0; i < toRemove.Count; i++)
|
||
|
|
{
|
||
|
|
AnimationUtility.SetEditorCurve(clip, toRemove[i], null);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// adds a stepped key frame to the given curve
|
||
|
|
public static void AddKeyFrameToCurve(AnimationCurve curve, float time, float framerate, float value, bool stepped)
|
||
|
|
{
|
||
|
|
var key = new Keyframe();
|
||
|
|
|
||
|
|
bool add = true;
|
||
|
|
var keyIndex = GetKeyframeAtTime(curve, time, framerate);
|
||
|
|
if (keyIndex != -1)
|
||
|
|
{
|
||
|
|
add = false;
|
||
|
|
key = curve[keyIndex]; // retain the tangents and mode
|
||
|
|
curve.RemoveKey(keyIndex);
|
||
|
|
}
|
||
|
|
|
||
|
|
key.value = value;
|
||
|
|
key.time = GetKeyTime(time, framerate);
|
||
|
|
keyIndex = curve.AddKey(key);
|
||
|
|
|
||
|
|
if (stepped)
|
||
|
|
{
|
||
|
|
AnimationUtility.SetKeyBroken(curve, keyIndex, stepped);
|
||
|
|
AnimationUtility.SetKeyLeftTangentMode(curve, keyIndex, AnimationUtility.TangentMode.Constant);
|
||
|
|
AnimationUtility.SetKeyRightTangentMode(curve, keyIndex, AnimationUtility.TangentMode.Constant);
|
||
|
|
key.outTangent = Mathf.Infinity;
|
||
|
|
key.inTangent = Mathf.Infinity;
|
||
|
|
}
|
||
|
|
else if (add)
|
||
|
|
{
|
||
|
|
AnimationUtility.SetKeyLeftTangentMode(curve, keyIndex, AnimationUtility.TangentMode.ClampedAuto);
|
||
|
|
AnimationUtility.SetKeyRightTangentMode(curve, keyIndex, AnimationUtility.TangentMode.ClampedAuto);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (keyIndex != -1 && !stepped)
|
||
|
|
{
|
||
|
|
AnimationUtility.UpdateTangentsFromModeSurrounding(curve, keyIndex);
|
||
|
|
AnimationUtility.SetKeyBroken(curve, keyIndex, false);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Removes a keyframe at the given time from the animation curve
|
||
|
|
public static bool RemoveKeyFrameFromCurve(AnimationCurve curve, float time, float framerate)
|
||
|
|
{
|
||
|
|
var keyIndex = GetKeyframeAtTime(curve, time, framerate);
|
||
|
|
if (keyIndex == -1)
|
||
|
|
return false;
|
||
|
|
|
||
|
|
curve.RemoveKey(keyIndex);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// gets the value of the key
|
||
|
|
public static float GetKeyValue(SerializedProperty prop)
|
||
|
|
{
|
||
|
|
switch (prop.propertyType)
|
||
|
|
{
|
||
|
|
case SerializedPropertyType.Integer:
|
||
|
|
return prop.intValue;
|
||
|
|
case SerializedPropertyType.Boolean:
|
||
|
|
return prop.boolValue ? 1.0f : 0.0f;
|
||
|
|
case SerializedPropertyType.Float:
|
||
|
|
return prop.floatValue;
|
||
|
|
default:
|
||
|
|
Debug.LogError("Could not convert property type " + prop.propertyType.ToString() + " to float");
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return float.NaN;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static void SetFromKeyValue(SerializedProperty prop, float keyValue)
|
||
|
|
{
|
||
|
|
switch (prop.propertyType)
|
||
|
|
{
|
||
|
|
case SerializedPropertyType.Float:
|
||
|
|
{
|
||
|
|
prop.floatValue = keyValue;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
case SerializedPropertyType.Integer:
|
||
|
|
{
|
||
|
|
prop.intValue = (int)keyValue;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
case SerializedPropertyType.Boolean:
|
||
|
|
{
|
||
|
|
prop.boolValue = Math.Abs(keyValue) > 0.001f;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
Debug.LogError("Could not convert float to property type " + prop.propertyType.ToString());
|
||
|
|
}
|
||
|
|
|
||
|
|
// gets the index of the key, -1 if not found
|
||
|
|
public static int GetKeyframeAtTime(AnimationCurve curve, float time, float frameRate)
|
||
|
|
{
|
||
|
|
var range = 0.5f / frameRate;
|
||
|
|
var keys = curve.keys;
|
||
|
|
for (var i = 0; i < keys.Length; i++)
|
||
|
|
{
|
||
|
|
var k = keys[i];
|
||
|
|
if (k.time >= time - range && k.time < time + range)
|
||
|
|
{
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static int GetKeyframeAtTime(ObjectReferenceKeyframe[] curve, float time, float frameRate)
|
||
|
|
{
|
||
|
|
if (curve == null || curve.Length == 0)
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
var range = 0.5f / frameRate;
|
||
|
|
for (var i = 0; i < curve.Length; i++)
|
||
|
|
{
|
||
|
|
var t = curve[i].time;
|
||
|
|
if (t >= time - range && t < time + range)
|
||
|
|
{
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static float GetKeyTime(float time, float frameRate)
|
||
|
|
{
|
||
|
|
return Mathf.Round(time * frameRate) / frameRate;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static int KeyCompare(float timeA, float timeB, float frameRate)
|
||
|
|
{
|
||
|
|
if (Mathf.Abs(timeA - timeB) <= 0.5f / frameRate)
|
||
|
|
return 0;
|
||
|
|
return timeA < timeB ? -1 : 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Evaluates an object (bool curve)
|
||
|
|
public static Object Evaluate(ObjectReferenceKeyframe[] curve, float time)
|
||
|
|
{
|
||
|
|
return curve[EvaluateIndex(curve, time)].value;
|
||
|
|
}
|
||
|
|
|
||
|
|
// returns the index from evaluation
|
||
|
|
public static int EvaluateIndex(ObjectReferenceKeyframe[] curve, float time)
|
||
|
|
{
|
||
|
|
if (curve == null || curve.Length == 0)
|
||
|
|
throw new InvalidOperationException("Can not evaluate a PPtr curve with no entries");
|
||
|
|
|
||
|
|
// clamp conditions
|
||
|
|
if (time <= curve[0].time)
|
||
|
|
return 0;
|
||
|
|
if (time >= curve.Last().time)
|
||
|
|
return curve.Length - 1;
|
||
|
|
|
||
|
|
// binary search
|
||
|
|
var max = curve.Length - 1;
|
||
|
|
var min = 0;
|
||
|
|
while (max - min > 1)
|
||
|
|
{
|
||
|
|
var imid = (min + max) / 2;
|
||
|
|
if (Mathf.Approximately(curve[imid].time, time))
|
||
|
|
return imid;
|
||
|
|
if (curve[imid].time < time)
|
||
|
|
min = imid;
|
||
|
|
else if (curve[imid].time > time)
|
||
|
|
max = imid;
|
||
|
|
}
|
||
|
|
return min;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Shifts the animation clip so the time start at 0
|
||
|
|
public static void ShiftBySeconds(this AnimationClip clip, float time)
|
||
|
|
{
|
||
|
|
var floatBindings = AnimationUtility.GetCurveBindings(clip);
|
||
|
|
var objectBindings = AnimationUtility.GetObjectReferenceCurveBindings(clip);
|
||
|
|
|
||
|
|
// update the float curves
|
||
|
|
foreach (var bind in floatBindings)
|
||
|
|
{
|
||
|
|
var curve = AnimationUtility.GetEditorCurve(clip, bind);
|
||
|
|
var keys = curve.keys;
|
||
|
|
for (var i = 0; i < keys.Length; i++)
|
||
|
|
keys[i].time += time;
|
||
|
|
curve.keys = keys;
|
||
|
|
AnimationUtility.SetEditorCurve(clip, bind, curve);
|
||
|
|
}
|
||
|
|
|
||
|
|
// update the PPtr curves
|
||
|
|
foreach (var bind in objectBindings)
|
||
|
|
{
|
||
|
|
var curve = AnimationUtility.GetObjectReferenceCurve(clip, bind);
|
||
|
|
for (var i = 0; i < curve.Length; i++)
|
||
|
|
curve[i].time += time;
|
||
|
|
AnimationUtility.SetObjectReferenceCurve(clip, bind, curve);
|
||
|
|
}
|
||
|
|
|
||
|
|
EditorUtility.SetDirty(clip);
|
||
|
|
}
|
||
|
|
|
||
|
|
public static void ScaleTime(this AnimationClip clip, float scale)
|
||
|
|
{
|
||
|
|
var floatBindings = AnimationUtility.GetCurveBindings(clip);
|
||
|
|
var objectBindings = AnimationUtility.GetObjectReferenceCurveBindings(clip);
|
||
|
|
|
||
|
|
// update the float curves
|
||
|
|
foreach (var bind in floatBindings)
|
||
|
|
{
|
||
|
|
var curve = AnimationUtility.GetEditorCurve(clip, bind);
|
||
|
|
var keys = curve.keys;
|
||
|
|
for (var i = 0; i < keys.Length; i++)
|
||
|
|
keys[i].time *= scale;
|
||
|
|
curve.keys = keys.OrderBy(x => x.time).ToArray();
|
||
|
|
AnimationUtility.SetEditorCurve(clip, bind, curve);
|
||
|
|
}
|
||
|
|
|
||
|
|
// update the PPtr curves
|
||
|
|
foreach (var bind in objectBindings)
|
||
|
|
{
|
||
|
|
var curve = AnimationUtility.GetObjectReferenceCurve(clip, bind);
|
||
|
|
for (var i = 0; i < curve.Length; i++)
|
||
|
|
curve[i].time *= scale;
|
||
|
|
curve = curve.OrderBy(x => x.time).ToArray();
|
||
|
|
AnimationUtility.SetObjectReferenceCurve(clip, bind, curve);
|
||
|
|
}
|
||
|
|
|
||
|
|
EditorUtility.SetDirty(clip);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Creates an opposing blend curve that matches the given curve to make sure the result is normalized
|
||
|
|
public static AnimationCurve CreateMatchingCurve(AnimationCurve curve)
|
||
|
|
{
|
||
|
|
Keyframe[] keys = curve.keys;
|
||
|
|
|
||
|
|
for (var i = 0; i != keys.Length; i++)
|
||
|
|
{
|
||
|
|
if (!Single.IsPositiveInfinity(keys[i].inTangent))
|
||
|
|
keys[i].inTangent = -keys[i].inTangent;
|
||
|
|
if (!Single.IsPositiveInfinity(keys[i].outTangent))
|
||
|
|
keys[i].outTangent = -keys[i].outTangent;
|
||
|
|
keys[i].value = 1.0f - keys[i].value;
|
||
|
|
}
|
||
|
|
return new AnimationCurve(keys);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Sanitizes the keys on an animation to force the property to be normalized
|
||
|
|
public static Keyframe[] SanitizeCurveKeys(Keyframe[] keys, bool easeIn)
|
||
|
|
{
|
||
|
|
if (keys.Length < 2)
|
||
|
|
{
|
||
|
|
if (easeIn)
|
||
|
|
keys = new[] { new Keyframe(0, 0), new Keyframe(1, 1) };
|
||
|
|
else
|
||
|
|
keys = new[] { new Keyframe(0, 1), new Keyframe(1, 0) };
|
||
|
|
}
|
||
|
|
else if (easeIn)
|
||
|
|
{
|
||
|
|
keys[0].time = 0;
|
||
|
|
keys[keys.Length - 1].time = 1;
|
||
|
|
keys[keys.Length - 1].value = 1;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
keys[0].time = 0;
|
||
|
|
keys[0].value = 1;
|
||
|
|
keys[keys.Length - 1].time = 1;
|
||
|
|
}
|
||
|
|
return keys;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|