GlobalGameJame/Library/PackageCache/com.unity.timeline@1.2.10/Editor/CurveEditUtility.cs

658 lines
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C#
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2020-01-31 15:10:04 +00:00
using System;
using System.Collections.Generic;
using System.Linq;
using UnityEditorInternal;
using UnityEngine;
using Object = UnityEngine.Object;
namespace UnityEditor.Timeline
{
// Utility class for editing animation clips from serialized properties
static class CurveEditUtility
{
static bool IsRotationKey(EditorCurveBinding binding)
{
return binding.propertyName.Contains("localEulerAnglesRaw");
}
public static void AddKey(AnimationClip clip, EditorCurveBinding sourceBinding, SerializedProperty prop, double time)
{
if (sourceBinding.isPPtrCurve)
{
AddObjectKey(clip, sourceBinding, prop, time);
}
else if (IsRotationKey(sourceBinding))
{
AddRotationKey(clip, sourceBinding, prop, time);
}
else
{
AddFloatKey(clip, sourceBinding, prop, time);
}
}
static void AddObjectKey(AnimationClip clip, EditorCurveBinding sourceBinding, SerializedProperty prop, double time)
{
if (prop.propertyType != SerializedPropertyType.ObjectReference)
return;
ObjectReferenceKeyframe[] curve = null;
var info = AnimationClipCurveCache.Instance.GetCurveInfo(clip);
var curveIndex = Array.IndexOf(info.objectBindings, sourceBinding);
if (curveIndex >= 0)
{
curve = info.objectCurves[curveIndex];
// where in the array does the evaluation land?
var evalIndex = EvaluateIndex(curve, (float)time);
if (KeyCompare(curve[evalIndex].time, (float)time, clip.frameRate) == 0)
{
curve[evalIndex].value = prop.objectReferenceValue;
}
// check the next key (always return the minimum value)
else if (evalIndex < curve.Length - 1 && KeyCompare(curve[evalIndex + 1].time, (float)time, clip.frameRate) == 0)
{
curve[evalIndex + 1].value = prop.objectReferenceValue;
}
// resize the array
else
{
if (time > curve[0].time)
evalIndex++;
var key = new ObjectReferenceKeyframe();
key.time = (float)time;
key.value = prop.objectReferenceValue;
ArrayUtility.Insert(ref curve, evalIndex, key);
}
}
else // curve doesn't exist, add it
{
curve = new ObjectReferenceKeyframe[1];
curve[0].time = (float)time;
curve[0].value = prop.objectReferenceValue;
}
AnimationUtility.SetObjectReferenceCurve(clip, sourceBinding, curve);
EditorUtility.SetDirty(clip);
}
static void AddRotationKey(AnimationClip clip, EditorCurveBinding sourceBind, SerializedProperty prop, double time)
{
if (prop.propertyType != SerializedPropertyType.Quaternion)
{
return;
}
var updateCurves = new List<AnimationCurve>();
var updateBindings = new List<EditorCurveBinding>();
var info = AnimationClipCurveCache.Instance.GetCurveInfo(clip);
for (var i = 0; i < info.bindings.Length; i++)
{
if (sourceBind.type != info.bindings[i].type)
continue;
if (info.bindings[i].propertyName.Contains("localEuler"))
{
updateBindings.Add(info.bindings[i]);
updateCurves.Add(info.curves[i]);
}
}
// use this instead of serialized properties because the editor will attempt to maintain
// correct localeulers
var eulers = ((Transform)prop.serializedObject.targetObject).localEulerAngles;
if (updateBindings.Count == 0)
{
var propName = AnimationWindowUtility.GetPropertyGroupName(sourceBind.propertyName);
updateBindings.Add(EditorCurveBinding.FloatCurve(sourceBind.path, sourceBind.type, propName + ".x"));
updateBindings.Add(EditorCurveBinding.FloatCurve(sourceBind.path, sourceBind.type, propName + ".y"));
updateBindings.Add(EditorCurveBinding.FloatCurve(sourceBind.path, sourceBind.type, propName + ".z"));
var curveX = new AnimationCurve();
var curveY = new AnimationCurve();
var curveZ = new AnimationCurve();
AddKeyFrameToCurve(curveX, (float)time, clip.frameRate, eulers.x, false);
AddKeyFrameToCurve(curveY, (float)time, clip.frameRate, eulers.y, false);
AddKeyFrameToCurve(curveZ, (float)time, clip.frameRate, eulers.z, false);
updateCurves.Add(curveX);
updateCurves.Add(curveY);
updateCurves.Add(curveZ);
}
for (var i = 0; i < updateBindings.Count; i++)
{
var c = updateBindings[i].propertyName.Last();
var value = eulers.x;
if (c == 'y') value = eulers.y;
else if (c == 'z') value = eulers.z;
AddKeyFrameToCurve(updateCurves[i], (float)time, clip.frameRate, value, false);
}
UpdateEditorCurves(clip, updateBindings, updateCurves);
}
// Add a floating point curve key
static void AddFloatKey(AnimationClip clip, EditorCurveBinding sourceBind, SerializedProperty prop, double time)
{
var updateCurves = new List<AnimationCurve>();
var updateBindings = new List<EditorCurveBinding>();
var updated = false;
var info = AnimationClipCurveCache.Instance.GetCurveInfo(clip);
for (var i = 0; i < info.bindings.Length; i++)
{
var binding = info.bindings[i];
if (binding.type != sourceBind.type)
continue;
SerializedProperty valProp = null;
var curve = info.curves[i];
// perfect match on property path, editting a float
if (prop.propertyPath.Equals(binding.propertyName))
{
valProp = prop;
}
// this is a child object
else if (binding.propertyName.Contains(prop.propertyPath))
{
valProp = prop.serializedObject.FindProperty(binding.propertyName);
}
if (valProp != null)
{
var value = GetKeyValue(valProp);
if (!float.IsNaN(value)) // Nan indicates an error retrieving the property value
{
updated = true;
AddKeyFrameToCurve(curve, (float)time, clip.frameRate, value, valProp.propertyType == SerializedPropertyType.Boolean);
updateCurves.Add(curve);
updateBindings.Add(binding);
}
}
}
// Curves don't exist, add them
if (!updated)
{
var propName = AnimationWindowUtility.GetPropertyGroupName(sourceBind.propertyName);
if (!prop.hasChildren)
{
var value = GetKeyValue(prop);
if (!float.IsNaN(value))
{
updateBindings.Add(EditorCurveBinding.FloatCurve(sourceBind.path, sourceBind.type, sourceBind.propertyName));
var curve = new AnimationCurve();
AddKeyFrameToCurve(curve, (float)time, clip.frameRate, value, prop.propertyType == SerializedPropertyType.Boolean);
updateCurves.Add(curve);
}
}
else
{
// special case because subproperties on color aren't 'visible' so you can't iterate over them
if (prop.propertyType == SerializedPropertyType.Color)
{
updateBindings.Add(EditorCurveBinding.FloatCurve(sourceBind.path, sourceBind.type, propName + ".r"));
updateBindings.Add(EditorCurveBinding.FloatCurve(sourceBind.path, sourceBind.type, propName + ".g"));
updateBindings.Add(EditorCurveBinding.FloatCurve(sourceBind.path, sourceBind.type, propName + ".b"));
updateBindings.Add(EditorCurveBinding.FloatCurve(sourceBind.path, sourceBind.type, propName + ".a"));
var c = prop.colorValue;
for (var i = 0; i < 4; i++)
{
var curve = new AnimationCurve();
AddKeyFrameToCurve(curve, (float)time, clip.frameRate, c[i], prop.propertyType == SerializedPropertyType.Boolean);
updateCurves.Add(curve);
}
}
else
{
prop = prop.Copy();
foreach (SerializedProperty cp in prop)
{
updateBindings.Add(EditorCurveBinding.FloatCurve(sourceBind.path, sourceBind.type, cp.propertyPath));
var curve = new AnimationCurve();
AddKeyFrameToCurve(curve, (float)time, clip.frameRate, GetKeyValue(cp), cp.propertyType == SerializedPropertyType.Boolean);
updateCurves.Add(curve);
}
}
}
}
UpdateEditorCurves(clip, updateBindings, updateCurves);
}
public static void RemoveKey(AnimationClip clip, EditorCurveBinding sourceBinding, SerializedProperty prop, double time)
{
if (sourceBinding.isPPtrCurve)
{
RemoveObjectKey(clip, sourceBinding, time);
}
else if (IsRotationKey(sourceBinding))
{
RemoveRotationKey(clip, sourceBinding, prop, time);
}
else
{
RemoveFloatKey(clip, sourceBinding, prop, time);
}
}
public static void RemoveObjectKey(AnimationClip clip, EditorCurveBinding sourceBinding, double time)
{
var info = AnimationClipCurveCache.Instance.GetCurveInfo(clip);
var curveIndex = Array.IndexOf(info.objectBindings, sourceBinding);
if (curveIndex >= 0)
{
var curve = info.objectCurves[curveIndex];
var evalIndex = GetKeyframeAtTime(curve, (float)time, clip.frameRate);
if (evalIndex >= 0)
{
ArrayUtility.RemoveAt(ref curve, evalIndex);
AnimationUtility.SetObjectReferenceCurve(clip, sourceBinding, curve.Length == 0 ? null : curve);
EditorUtility.SetDirty(clip);
}
}
}
public static int GetObjectKeyCount(AnimationClip clip, EditorCurveBinding sourceBinding)
{
var info = AnimationClipCurveCache.Instance.GetCurveInfo(clip);
var curveIndex = Array.IndexOf(info.objectBindings, sourceBinding);
if (curveIndex >= 0)
{
var curve = info.objectCurves[curveIndex];
return curve.Length;
}
return 0;
}
static void RemoveRotationKey(AnimationClip clip, EditorCurveBinding sourceBind, SerializedProperty prop, double time)
{
if (prop.propertyType != SerializedPropertyType.Quaternion)
{
return;
}
var updateCurves = new List<AnimationCurve>();
var updateBindings = new List<EditorCurveBinding>();
var info = AnimationClipCurveCache.Instance.GetCurveInfo(clip);
for (var i = 0; i < info.bindings.Length; i++)
{
if (sourceBind.type != info.bindings[i].type)
continue;
if (info.bindings[i].propertyName.Contains("localEuler"))
{
updateBindings.Add(info.bindings[i]);
updateCurves.Add(info.curves[i]);
}
}
foreach (var c in updateCurves)
{
RemoveKeyFrameFromCurve(c, (float)time, clip.frameRate);
}
UpdateEditorCurves(clip, updateBindings, updateCurves);
}
// Removes the float keys from curves
static void RemoveFloatKey(AnimationClip clip, EditorCurveBinding sourceBind, SerializedProperty prop, double time)
{
var updateCurves = new List<AnimationCurve>();
var updateBindings = new List<EditorCurveBinding>();
var info = AnimationClipCurveCache.Instance.GetCurveInfo(clip);
for (var i = 0; i < info.bindings.Length; i++)
{
var binding = info.bindings[i];
if (binding.type != sourceBind.type)
continue;
SerializedProperty valProp = null;
var curve = info.curves[i];
// perfect match on property path, editting a float
if (prop.propertyPath.Equals(binding.propertyName))
{
valProp = prop;
}
// this is a child object
else if (binding.propertyName.Contains(prop.propertyPath))
{
valProp = prop.serializedObject.FindProperty(binding.propertyName);
}
if (valProp != null)
{
RemoveKeyFrameFromCurve(curve, (float)time, clip.frameRate);
updateCurves.Add(curve);
updateBindings.Add(binding);
}
}
// update the curve. Do this last to not mess with the curve caches we are iterating over
UpdateEditorCurves(clip, updateBindings, updateCurves);
}
static void UpdateEditorCurve(AnimationClip clip, EditorCurveBinding binding, AnimationCurve curve)
{
if (curve.keys.Length == 0)
AnimationUtility.SetEditorCurve(clip, binding, null);
else
AnimationUtility.SetEditorCurve(clip, binding, curve);
}
static void UpdateEditorCurves(AnimationClip clip, List<EditorCurveBinding> bindings, List<AnimationCurve> curves)
{
if (curves.Count == 0)
return;
for (var i = 0; i < curves.Count; i++)
{
UpdateEditorCurve(clip, bindings[i], curves[i]);
}
EditorUtility.SetDirty(clip);
}
public static void RemoveCurves(AnimationClip clip, SerializedProperty prop)
{
if (clip == null || prop == null)
return;
var toRemove = new List<EditorCurveBinding>();
var info = AnimationClipCurveCache.Instance.GetCurveInfo(clip);
for (var i = 0; i < info.bindings.Length; i++)
{
var binding = info.bindings[i];
// 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;
}
}
}