302 lines
13 KiB
C#
302 lines
13 KiB
C#
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using System;
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#if UNITY_EDITOR
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using System.Collections.Generic;
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using UnityEditor;
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namespace UnityEngine.Timeline
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{
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static class AnimationPreviewUtilities
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{
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private const string k_PosX = "m_LocalPosition.x";
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private const string k_PosY = "m_LocalPosition.y";
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private const string k_PosZ = "m_LocalPosition.z";
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private const string k_RotX = "m_LocalRotation.x";
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private const string k_RotY = "m_LocalRotation.y";
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private const string k_RotZ = "m_LocalRotation.z";
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private const string k_RotW = "m_LocalRotation.w";
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private const string k_ScaleX = "m_LocalScale.x";
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private const string k_ScaleY = "m_LocalScale.y";
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private const string k_ScaleZ = "m_LocalScale.z";
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private const string k_EulerAnglesRaw = "localEulerAnglesRaw";
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private const string k_EulerHint = "m_LocalEulerAnglesHint";
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private const string k_Pos = "m_LocalPosition";
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private const string k_Rot = "m_LocalRotation";
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private const string k_MotionT = "MotionT";
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private const string k_MotionQ = "MotionQ";
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private const string k_RootT = "RootT";
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private const string k_RootQ = "RootQ";
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internal static Object s_PreviewDriver;
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internal class EditorCurveBindingComparer : IEqualityComparer<EditorCurveBinding>
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{
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public bool Equals(EditorCurveBinding x, EditorCurveBinding y) { return x.path.Equals(y.path) && x.type == y.type && x.propertyName == y.propertyName; }
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public int GetHashCode(EditorCurveBinding obj)
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{
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return obj.propertyName.GetHashCode() ^ obj.path.GetHashCode();
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}
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public static readonly EditorCurveBindingComparer Instance = new EditorCurveBindingComparer();
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}
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// a dictionary is faster than a hashset, because the capacity can be pre-set
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private static readonly Dictionary<EditorCurveBinding, int> s_CurveSet = new Dictionary<EditorCurveBinding, int>(10000, EditorCurveBindingComparer.Instance);
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private static readonly AnimatorBindingCache s_BindingCache = new AnimatorBindingCache();
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// string.StartsWith is slow (https://docs.unity3d.com/Manual/BestPracticeUnderstandingPerformanceInUnity5.html)
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// hand rolled version has best performance.
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private static bool FastStartsWith(string a, string toCompare)
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{
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int aLen = a.Length;
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int bLen = toCompare.Length;
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int ap = 0;
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int bp = 0;
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while (ap < aLen && bp < bLen && a[ap] == toCompare[bp])
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{
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ap++;
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bp++;
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}
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return (bp == bLen);
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}
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public static void ClearCaches()
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{
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s_BindingCache.Clear();
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s_CurveSet.Clear();
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}
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public static EditorCurveBinding[] GetBindings(GameObject animatorRoot, IEnumerable<AnimationClip> clips)
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{
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s_CurveSet.Clear();
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foreach (var clip in clips)
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{
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AddBindings(s_BindingCache.GetCurveBindings(clip));
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}
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// if we have a transform binding, bind the entire skeleton
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if (NeedsSkeletonBindings(s_CurveSet.Keys))
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AddBindings(s_BindingCache.GetAnimatorBindings(animatorRoot));
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var bindings = new EditorCurveBinding[s_CurveSet.Keys.Count];
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s_CurveSet.Keys.CopyTo(bindings, 0);
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return bindings;
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}
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public static int GetClipHash(List<AnimationClip> clips)
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{
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int hash = 0;
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foreach (var clip in clips)
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{
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var stats = AnimationUtility.GetAnimationClipStats(clip);
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hash = HashUtility.CombineHash(hash, clip.GetHashCode(), stats.clips, stats.size, stats.totalCurves);
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}
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return hash;
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}
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public static void PreviewFromCurves(GameObject animatorRoot, IEnumerable<EditorCurveBinding> keys)
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{
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if (!AnimationMode.InAnimationMode())
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return;
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var avatarRoot = GetAvatarRoot(animatorRoot);
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foreach (var binding in keys)
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{
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if (IsAvatarBinding(binding) || IsEuler(binding))
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continue;
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bool isTransform = typeof(Transform).IsAssignableFrom(binding.type);
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if (isTransform && binding.propertyName.Equals(AnimatorBindingCache.TRPlaceHolder))
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AddTRBinding(animatorRoot, binding);
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else if (isTransform && binding.propertyName.Equals(AnimatorBindingCache.ScalePlaceholder))
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AddScaleBinding(animatorRoot, binding);
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else
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AnimationMode.AddEditorCurveBinding(avatarRoot, binding);
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}
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}
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public static AnimationClip CreateDefaultClip(GameObject animatorRoot, IEnumerable<EditorCurveBinding> keys)
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{
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AnimationClip animClip = new AnimationClip() { name = "DefaultPose" };
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var keyFrames = new[] {new Keyframe(0, 0)};
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var curve = new AnimationCurve(keyFrames);
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bool rootMotion = false;
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var avatarRoot = GetAvatarRoot(animatorRoot);
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foreach (var binding in keys)
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{
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if (IsRootMotion(binding))
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{
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rootMotion = true;
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continue;
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}
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if (typeof(Transform).IsAssignableFrom(binding.type) && binding.propertyName.Equals(AnimatorBindingCache.TRPlaceHolder))
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{
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if (string.IsNullOrEmpty(binding.path))
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rootMotion = true;
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else
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{
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var transform = animatorRoot.transform.Find(binding.path);
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if (transform != null)
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{
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var pos = transform.localPosition;
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var rot = transform.localRotation;
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animClip.SetCurve(binding.path, typeof(Transform), k_PosX, SetZeroKey(curve, keyFrames, pos.x));
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animClip.SetCurve(binding.path, typeof(Transform), k_PosY, SetZeroKey(curve, keyFrames, pos.y));
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animClip.SetCurve(binding.path, typeof(Transform), k_PosZ, SetZeroKey(curve, keyFrames, pos.z));
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animClip.SetCurve(binding.path, typeof(Transform), k_RotX, SetZeroKey(curve, keyFrames, rot.x));
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animClip.SetCurve(binding.path, typeof(Transform), k_RotY, SetZeroKey(curve, keyFrames, rot.y));
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animClip.SetCurve(binding.path, typeof(Transform), k_RotZ, SetZeroKey(curve, keyFrames, rot.z));
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animClip.SetCurve(binding.path, typeof(Transform), k_RotW, SetZeroKey(curve, keyFrames, rot.w));
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}
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}
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continue;
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}
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if (typeof(Transform).IsAssignableFrom(binding.type) && binding.propertyName == AnimatorBindingCache.ScalePlaceholder)
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{
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var transform = animatorRoot.transform.Find(binding.path);
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if (transform != null)
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{
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var scale = transform.localScale;
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animClip.SetCurve(binding.path, typeof(Transform), k_ScaleX, SetZeroKey(curve, keyFrames, scale.x));
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animClip.SetCurve(binding.path, typeof(Transform), k_ScaleY, SetZeroKey(curve, keyFrames, scale.y));
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animClip.SetCurve(binding.path, typeof(Transform), k_ScaleZ, SetZeroKey(curve, keyFrames, scale.z));
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}
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continue;
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}
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// Not setting curves through AnimationUtility.SetEditorCurve to avoid reentrant
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// onCurveWasModified calls in timeline. This means we don't get sprite curves
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// in the default clip right now.
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if (IsAvatarBinding(binding) || IsEulerHint(binding) || binding.isPPtrCurve)
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continue;
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float floatValue;
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AnimationUtility.GetFloatValue(avatarRoot, binding, out floatValue);
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animClip.SetCurve(binding.path, binding.type, binding.propertyName, SetZeroKey(curve, keyFrames, floatValue));
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}
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// add root motion explicitly.
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if (rootMotion)
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{
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var pos = Vector3.zero; // the appropriate root motion offsets are applied by timeline
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var rot = Quaternion.identity;
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animClip.SetCurve(string.Empty, typeof(Transform), k_PosX, SetZeroKey(curve, keyFrames, pos.x));
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animClip.SetCurve(string.Empty, typeof(Transform), k_PosY, SetZeroKey(curve, keyFrames, pos.y));
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animClip.SetCurve(string.Empty, typeof(Transform), k_PosZ, SetZeroKey(curve, keyFrames, pos.z));
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animClip.SetCurve(string.Empty, typeof(Transform), k_RotX, SetZeroKey(curve, keyFrames, rot.x));
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animClip.SetCurve(string.Empty, typeof(Transform), k_RotY, SetZeroKey(curve, keyFrames, rot.y));
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animClip.SetCurve(string.Empty, typeof(Transform), k_RotZ, SetZeroKey(curve, keyFrames, rot.z));
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animClip.SetCurve(string.Empty, typeof(Transform), k_RotW, SetZeroKey(curve, keyFrames, rot.w));
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}
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return animClip;
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}
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public static bool IsRootMotion(EditorCurveBinding binding)
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{
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// Root Transform TR.
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if (typeof(Transform).IsAssignableFrom(binding.type) && string.IsNullOrEmpty(binding.path))
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{
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return FastStartsWith(binding.propertyName, k_Pos) || FastStartsWith(binding.propertyName, k_Rot);
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}
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// MotionCurves/RootCurves.
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if (binding.type == typeof(Animator))
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{
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return FastStartsWith(binding.propertyName, k_MotionT) ||
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FastStartsWith(binding.propertyName, k_MotionQ) ||
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FastStartsWith(binding.propertyName, k_RootT) ||
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FastStartsWith(binding.propertyName, k_RootQ);
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}
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return false;
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}
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private static bool NeedsSkeletonBindings(IEnumerable<EditorCurveBinding> bindings)
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{
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foreach (var b in bindings)
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{
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if (IsSkeletalBinding(b))
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return true;
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}
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return false;
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}
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private static void AddBindings(IEnumerable<EditorCurveBinding> bindings)
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{
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foreach (var b in bindings)
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{
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if (!s_CurveSet.ContainsKey(b))
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s_CurveSet[b] = 1;
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}
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}
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private static void AddTRBinding(GameObject root, EditorCurveBinding binding)
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{
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var t = root.transform.Find(binding.path);
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if (t != null)
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{
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DrivenPropertyManager.RegisterProperty(s_PreviewDriver, t, "m_LocalPosition");
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DrivenPropertyManager.RegisterProperty(s_PreviewDriver, t, "m_LocalRotation");
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}
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}
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private static void AddScaleBinding(GameObject root, EditorCurveBinding binding)
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{
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var t = root.transform.Find(binding.path);
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if (t != null)
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DrivenPropertyManager.RegisterProperty(s_PreviewDriver, t, "m_LocalScale");
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}
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private static bool IsEuler(EditorCurveBinding binding)
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{
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return FastStartsWith(binding.propertyName, k_EulerAnglesRaw) &&
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typeof(Transform).IsAssignableFrom(binding.type);
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}
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private static bool IsAvatarBinding(EditorCurveBinding binding)
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{
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return string.IsNullOrEmpty(binding.path) && typeof(Animator) == binding.type;
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}
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private static bool IsSkeletalBinding(EditorCurveBinding binding)
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{
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// skin mesh incorporates blend shapes
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return typeof(Transform).IsAssignableFrom(binding.type) || typeof(SkinnedMeshRenderer).IsAssignableFrom(binding.type);
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}
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private static AnimationCurve SetZeroKey(AnimationCurve curve, Keyframe[] keys, float val)
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{
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keys[0].value = val;
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curve.keys = keys;
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return curve;
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}
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private static bool IsEulerHint(EditorCurveBinding binding)
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{
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return typeof(Transform).IsAssignableFrom(binding.type) && binding.propertyName.StartsWith(k_EulerHint);
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}
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private static GameObject GetAvatarRoot(GameObject animatorRoot)
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{
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var animator = animatorRoot.GetComponent<Animator>();
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if (animator != null && animator.avatarRoot != animatorRoot.transform)
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return animator.avatarRoot.gameObject;
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return animatorRoot;
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}
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}
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}
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#endif
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