├── img ├── testInput.png └── testOutput.png ├── ImKeyframeReduction.unitypackage ├── ProjectSettings ├── ProjectVersion.txt ├── Packages │ └── com.unity.testtools.codecoverage │ │ └── Settings.json ├── ClusterInputManager.asset ├── PresetManager.asset ├── EditorBuildSettings.asset ├── XRSettings.asset ├── VersionControlSettings.asset ├── TimeManager.asset ├── VFXManager.asset ├── AudioManager.asset ├── TagManager.asset ├── PackageManagerSettings.asset ├── EditorSettings.asset ├── UnityConnectSettings.asset ├── DynamicsManager.asset ├── MemorySettings.asset ├── NavMeshAreas.asset ├── Physics2DSettings.asset ├── GraphicsSettings.asset ├── InputManager.asset ├── QualitySettings.asset └── ProjectSettings.asset ├── Assets ├── MathNet.Numerics │ ├── MathNet.Numerics.dll │ ├── MathNet.Numerics.Providers.MKL.dll │ ├── MathNet.Numerics.Providers.CUDA.dll │ ├── LICENSE.md.meta │ ├── MathNet.Numerics.dll.meta │ ├── MathNet.Numerics.Providers.CUDA.dll.meta │ ├── MathNet.Numerics.Providers.MKL.dll.meta │ └── LICENSE.md ├── Empty.unity.meta ├── Im │ ├── LICENSE.md.meta │ ├── LICENSE.md │ ├── Script.meta │ ├── TestInput.anim.meta │ ├── TestOutput.anim.meta │ └── Script │ │ ├── KeyframeReduction.cs.meta │ │ └── KeyframeReduction.cs ├── Im.meta ├── MathNet.Numerics.meta └── Empty.unity ├── README.md ├── .gitignore └── Packages ├── manifest.json └── packages-lock.json /img/testInput.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/phi16/ImKeyframeReduction/HEAD/img/testInput.png -------------------------------------------------------------------------------- /img/testOutput.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/phi16/ImKeyframeReduction/HEAD/img/testOutput.png -------------------------------------------------------------------------------- /ImKeyframeReduction.unitypackage: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/phi16/ImKeyframeReduction/HEAD/ImKeyframeReduction.unitypackage -------------------------------------------------------------------------------- /ProjectSettings/ProjectVersion.txt: -------------------------------------------------------------------------------- 1 | m_EditorVersion: 2022.3.6f1 2 | m_EditorVersionWithRevision: 2022.3.6f1 (b9e6e7e9fa2d) 3 | -------------------------------------------------------------------------------- /Assets/MathNet.Numerics/MathNet.Numerics.dll: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/phi16/ImKeyframeReduction/HEAD/Assets/MathNet.Numerics/MathNet.Numerics.dll -------------------------------------------------------------------------------- /ProjectSettings/Packages/com.unity.testtools.codecoverage/Settings.json: -------------------------------------------------------------------------------- 1 | { 2 | "m_Dictionary": { 3 | "m_DictionaryValues": [] 4 | } 5 | } -------------------------------------------------------------------------------- /Assets/MathNet.Numerics/MathNet.Numerics.Providers.MKL.dll: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/phi16/ImKeyframeReduction/HEAD/Assets/MathNet.Numerics/MathNet.Numerics.Providers.MKL.dll -------------------------------------------------------------------------------- /Assets/MathNet.Numerics/MathNet.Numerics.Providers.CUDA.dll: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/phi16/ImKeyframeReduction/HEAD/Assets/MathNet.Numerics/MathNet.Numerics.Providers.CUDA.dll -------------------------------------------------------------------------------- /ProjectSettings/ClusterInputManager.asset: -------------------------------------------------------------------------------- 1 | %YAML 1.1 2 | %TAG !u! tag:unity3d.com,2011: 3 | --- !u!236 &1 4 | ClusterInputManager: 5 | m_ObjectHideFlags: 0 6 | m_Inputs: [] 7 | -------------------------------------------------------------------------------- /Assets/Empty.unity.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 1e9a2aa43002e5c418429e2aa0e2e5ac 3 | DefaultImporter: 4 | externalObjects: {} 5 | userData: 6 | assetBundleName: 7 | assetBundleVariant: 8 | -------------------------------------------------------------------------------- /Assets/Im/LICENSE.md.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: f06851b9ee9c2a2419e84be2ddc30017 3 | TextScriptImporter: 4 | externalObjects: {} 5 | userData: 6 | assetBundleName: 7 | assetBundleVariant: 8 | -------------------------------------------------------------------------------- /ProjectSettings/PresetManager.asset: -------------------------------------------------------------------------------- 1 | %YAML 1.1 2 | %TAG !u! tag:unity3d.com,2011: 3 | --- !u!1386491679 &1 4 | PresetManager: 5 | m_ObjectHideFlags: 0 6 | serializedVersion: 2 7 | m_DefaultPresets: {} 8 | -------------------------------------------------------------------------------- /Assets/Im.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: cd1a966d89208c743bc19e5249d5a08c 3 | folderAsset: yes 4 | DefaultImporter: 5 | externalObjects: {} 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /Assets/Im/LICENSE.md: -------------------------------------------------------------------------------- 1 | ## License 2 | 3 | The contents in this folder are licensed under CC0 1.0. 4 | 5 | [![CC0](http://i.creativecommons.org/p/zero/1.0/88x31.png "CC0")](http://creativecommons.org/publicdomain/zero/1.0/) -------------------------------------------------------------------------------- /Assets/Im/Script.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 52f9826981d12ef479ba24aa8a5e8e66 3 | folderAsset: yes 4 | DefaultImporter: 5 | externalObjects: {} 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /Assets/MathNet.Numerics/LICENSE.md.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: edcb6da5b7cd87a45a053a53343da61d 3 | TextScriptImporter: 4 | externalObjects: {} 5 | userData: 6 | assetBundleName: 7 | assetBundleVariant: 8 | -------------------------------------------------------------------------------- /Assets/MathNet.Numerics.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: f8dfd5ee701534f49938963c71155736 3 | folderAsset: yes 4 | DefaultImporter: 5 | externalObjects: {} 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /ProjectSettings/EditorBuildSettings.asset: -------------------------------------------------------------------------------- 1 | %YAML 1.1 2 | %TAG !u! 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tag:unity3d.com,2011: 3 | --- !u!159 &1 4 | EditorSettings: 5 | m_ObjectHideFlags: 0 6 | serializedVersion: 11 7 | m_ExternalVersionControlSupport: Visible Meta Files 8 | m_SerializationMode: 2 9 | m_LineEndingsForNewScripts: 0 10 | m_DefaultBehaviorMode: 0 11 | m_PrefabRegularEnvironment: {fileID: 0} 12 | m_PrefabUIEnvironment: {fileID: 0} 13 | m_SpritePackerMode: 0 14 | m_SpritePackerPaddingPower: 1 15 | m_EtcTextureCompressorBehavior: 1 16 | m_EtcTextureFastCompressor: 1 17 | m_EtcTextureNormalCompressor: 2 18 | m_EtcTextureBestCompressor: 4 19 | m_ProjectGenerationIncludedExtensions: txt;xml;fnt;cd;asmdef;rsp;asmref 20 | m_ProjectGenerationRootNamespace: 21 | m_CollabEditorSettings: 22 | inProgressEnabled: 1 23 | m_EnableTextureStreamingInEditMode: 1 24 | m_EnableTextureStreamingInPlayMode: 1 25 | m_AsyncShaderCompilation: 1 26 | m_EnterPlayModeOptionsEnabled: 0 27 | m_EnterPlayModeOptions: 3 28 | m_ShowLightmapResolutionOverlay: 1 29 | m_UseLegacyProbeSampleCount: 0 30 | m_SerializeInlineMappingsOnOneLine: 1 31 | -------------------------------------------------------------------------------- /ProjectSettings/UnityConnectSettings.asset: -------------------------------------------------------------------------------- 1 | %YAML 1.1 2 | %TAG !u! tag:unity3d.com,2011: 3 | --- !u!310 &1 4 | UnityConnectSettings: 5 | m_ObjectHideFlags: 0 6 | serializedVersion: 1 7 | m_Enabled: 0 8 | m_TestMode: 0 9 | m_EventOldUrl: https://api.uca.cloud.unity3d.com/v1/events 10 | m_EventUrl: https://cdp.cloud.unity3d.com/v1/events 11 | m_ConfigUrl: https://config.uca.cloud.unity3d.com 12 | m_DashboardUrl: https://dashboard.unity3d.com 13 | m_TestInitMode: 0 14 | CrashReportingSettings: 15 | m_EventUrl: https://perf-events.cloud.unity3d.com 16 | m_Enabled: 0 17 | m_LogBufferSize: 10 18 | m_CaptureEditorExceptions: 1 19 | UnityPurchasingSettings: 20 | m_Enabled: 0 21 | m_TestMode: 0 22 | UnityAnalyticsSettings: 23 | m_Enabled: 0 24 | m_TestMode: 0 25 | m_InitializeOnStartup: 1 26 | m_PackageRequiringCoreStatsPresent: 0 27 | UnityAdsSettings: 28 | m_Enabled: 0 29 | m_InitializeOnStartup: 1 30 | m_TestMode: 0 31 | m_IosGameId: 32 | m_AndroidGameId: 33 | m_GameIds: {} 34 | m_GameId: 35 | PerformanceReportingSettings: 36 | m_Enabled: 0 37 | -------------------------------------------------------------------------------- /Assets/MathNet.Numerics/LICENSE.md: -------------------------------------------------------------------------------- 1 | Copyright (c) 2002-2022 Math.NET 2 | 3 | Permission is hereby granted, free of charge, to any person obtaining 4 | a copy of this software and associated documentation files (the 5 | "Software"), to deal in the Software without restriction, including 6 | without limitation the rights to use, copy, modify, merge, publish, 7 | distribute, sublicense, and/or sell copies of the Software, and to 8 | permit persons to whom the Software is furnished to do so, subject to 9 | the following conditions: 10 | 11 | The above copyright notice and this permission notice shall be 12 | included in all copies or substantial portions of the Software. 13 | 14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 15 | EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 16 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 17 | NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 18 | LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 19 | OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 20 | WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 21 | -------------------------------------------------------------------------------- /ProjectSettings/DynamicsManager.asset: -------------------------------------------------------------------------------- 1 | %YAML 1.1 2 | %TAG !u! tag:unity3d.com,2011: 3 | --- !u!55 &1 4 | PhysicsManager: 5 | m_ObjectHideFlags: 0 6 | serializedVersion: 11 7 | m_Gravity: {x: 0, y: -9.81, z: 0} 8 | m_DefaultMaterial: {fileID: 0} 9 | m_BounceThreshold: 2 10 | m_SleepThreshold: 0.005 11 | m_DefaultContactOffset: 0.01 12 | m_DefaultSolverIterations: 6 13 | m_DefaultSolverVelocityIterations: 1 14 | m_QueriesHitBackfaces: 0 15 | m_QueriesHitTriggers: 1 16 | m_EnableAdaptiveForce: 0 17 | m_ClothInterCollisionDistance: 0 18 | m_ClothInterCollisionStiffness: 0 19 | m_ContactsGeneration: 1 20 | m_LayerCollisionMatrix: ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 21 | m_AutoSimulation: 1 22 | m_AutoSyncTransforms: 0 23 | m_ReuseCollisionCallbacks: 1 24 | m_ClothInterCollisionSettingsToggle: 0 25 | m_ContactPairsMode: 0 26 | m_BroadphaseType: 0 27 | m_WorldBounds: 28 | m_Center: {x: 0, y: 0, z: 0} 29 | m_Extent: {x: 250, y: 250, z: 250} 30 | m_WorldSubdivisions: 8 31 | m_FrictionType: 0 32 | m_EnableEnhancedDeterminism: 0 33 | m_EnableUnifiedHeightmaps: 1 34 | m_DefaultMaxAngluarSpeed: 7 35 | -------------------------------------------------------------------------------- /ProjectSettings/MemorySettings.asset: -------------------------------------------------------------------------------- 1 | %YAML 1.1 2 | %TAG !u! tag:unity3d.com,2011: 3 | --- !u!387306366 &1 4 | MemorySettings: 5 | m_ObjectHideFlags: 0 6 | m_EditorMemorySettings: 7 | m_MainAllocatorBlockSize: -1 8 | m_ThreadAllocatorBlockSize: -1 9 | m_MainGfxBlockSize: -1 10 | m_ThreadGfxBlockSize: -1 11 | m_CacheBlockSize: -1 12 | m_TypetreeBlockSize: -1 13 | m_ProfilerBlockSize: -1 14 | m_ProfilerEditorBlockSize: -1 15 | m_BucketAllocatorGranularity: -1 16 | m_BucketAllocatorBucketsCount: -1 17 | m_BucketAllocatorBlockSize: -1 18 | m_BucketAllocatorBlockCount: -1 19 | m_ProfilerBucketAllocatorGranularity: -1 20 | m_ProfilerBucketAllocatorBucketsCount: -1 21 | m_ProfilerBucketAllocatorBlockSize: -1 22 | m_ProfilerBucketAllocatorBlockCount: -1 23 | m_TempAllocatorSizeMain: -1 24 | m_JobTempAllocatorBlockSize: -1 25 | m_BackgroundJobTempAllocatorBlockSize: -1 26 | m_JobTempAllocatorReducedBlockSize: -1 27 | m_TempAllocatorSizeGIBakingWorker: -1 28 | m_TempAllocatorSizeNavMeshWorker: -1 29 | m_TempAllocatorSizeAudioWorker: -1 30 | m_TempAllocatorSizeCloudWorker: -1 31 | m_TempAllocatorSizeGfx: -1 32 | m_TempAllocatorSizeJobWorker: -1 33 | m_TempAllocatorSizeBackgroundWorker: -1 34 | m_TempAllocatorSizePreloadManager: -1 35 | m_PlatformMemorySettings: {} 36 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Im Keyframe Reduction 2 | 3 | This tool performs keyframe reduction on an AnimationClip by using polynomial fitting. 4 | 5 | [The core script](https://github.com/phi16/ImKeyframeReduction/blob/main/Assets/Im/Script/KeyframeReduction.cs) is licensed under CC0 1.0. It utilizes [MathNet.Numerics](https://numerics.mathdotnet.com/), which is under the MIT license. 6 | 7 | ## Usage 8 | 9 | - Import the [ImKeyframeReduction.unitypackage](https://github.com/phi16/ImKeyframeReduction/raw/main/ImKeyframeReduction.unitypackage). 10 | - If you have already imported the MathNet.Numerics package, simply copy [the core script](https://github.com/phi16/ImKeyframeReduction/blob/main/Assets/Im/Script/KeyframeReduction.cs) into your project. 11 | - Open the `Window/Im/Keyframe Reduction` window. 12 | - Set the original AnimationClip, and leave the `Output Clip` field empty, then click `Execute`. 13 | - If the `Output Clip` field is not empty, the process will overwrite the existing `Output Clip`. 14 | 15 | ## Note 16 | 17 | - It is recommended to use Brute Force Mode to obtain accurate results. 18 | - Looking to fix... 19 | - (TODO: UPM?) 20 | 21 | ## Example 22 | 23 | Input: TestInput.anim (983KB) 24 | 25 | ![Screenshot](img/testInput.png) 26 | 27 | Output: TestOutput.anim (232KB), processed with default configuration (threshold = 1e-06, dt = 1/60, non-brute force mode). 28 | 29 | ![Screenshot](img/testOutput.png) 30 | 31 | ## Release notes 32 | 33 | - 2024/05/12 34 | - Copy original clip settings 35 | - Set Brute Force Mode as default 36 | - 2024/04/23 37 | - Release 38 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # This .gitignore file should be placed at the root of your Unity project directory 2 | # 3 | # Get latest from https://github.com/github/gitignore/blob/main/Unity.gitignore 4 | # 5 | /[Ll]ibrary/ 6 | /[Tt]emp/ 7 | /[Oo]bj/ 8 | /[Bb]uild/ 9 | /[Bb]uilds/ 10 | /[Ll]ogs/ 11 | /[Uu]ser[Ss]ettings/ 12 | 13 | # MemoryCaptures can get excessive in size. 14 | # They also could contain extremely sensitive data 15 | /[Mm]emoryCaptures/ 16 | 17 | # Recordings can get excessive in size 18 | /[Rr]ecordings/ 19 | 20 | # Uncomment this line if you wish to ignore the asset store tools plugin 21 | # /[Aa]ssets/AssetStoreTools* 22 | 23 | # Autogenerated Jetbrains Rider plugin 24 | /[Aa]ssets/Plugins/Editor/JetBrains* 25 | 26 | # Visual Studio cache directory 27 | .vs/ 28 | 29 | # Gradle cache directory 30 | .gradle/ 31 | 32 | # Autogenerated VS/MD/Consulo solution and project files 33 | ExportedObj/ 34 | .consulo/ 35 | *.csproj 36 | *.unityproj 37 | *.sln 38 | *.suo 39 | *.tmp 40 | *.user 41 | *.userprefs 42 | *.pidb 43 | *.booproj 44 | *.svd 45 | *.pdb 46 | *.mdb 47 | *.opendb 48 | *.VC.db 49 | 50 | # Unity3D generated meta files 51 | *.pidb.meta 52 | *.pdb.meta 53 | *.mdb.meta 54 | 55 | # Unity3D generated file on crash reports 56 | sysinfo.txt 57 | 58 | # Builds 59 | *.apk 60 | *.aab 61 | *.app 62 | 63 | # Crashlytics generated file 64 | crashlytics-build.properties 65 | 66 | # Packed Addressables 67 | /[Aa]ssets/[Aa]ddressable[Aa]ssets[Dd]ata/*/*.bin* 68 | 69 | # Temporary auto-generated Android Assets 70 | /[Aa]ssets/[Ss]treamingAssets/aa.meta 71 | /[Aa]ssets/[Ss]treamingAssets/aa/* 72 | 73 | .vscode/ 74 | Notes.md 75 | -------------------------------------------------------------------------------- /ProjectSettings/NavMeshAreas.asset: -------------------------------------------------------------------------------- 1 | %YAML 1.1 2 | %TAG !u! tag:unity3d.com,2011: 3 | --- !u!126 &1 4 | NavMeshProjectSettings: 5 | m_ObjectHideFlags: 0 6 | serializedVersion: 2 7 | areas: 8 | - name: Walkable 9 | cost: 1 10 | - name: Not Walkable 11 | cost: 1 12 | - name: Jump 13 | cost: 2 14 | - name: 15 | cost: 1 16 | - name: 17 | cost: 1 18 | - name: 19 | cost: 1 20 | - name: 21 | cost: 1 22 | - name: 23 | cost: 1 24 | - name: 25 | cost: 1 26 | - name: 27 | cost: 1 28 | - name: 29 | cost: 1 30 | - name: 31 | cost: 1 32 | - name: 33 | cost: 1 34 | - name: 35 | cost: 1 36 | - name: 37 | cost: 1 38 | - name: 39 | cost: 1 40 | - name: 41 | cost: 1 42 | - name: 43 | cost: 1 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"dependencies": { 376 | "com.unity.modules.physics": "1.0.0", 377 | "com.unity.modules.jsonserialize": "1.0.0", 378 | "com.unity.modules.subsystems": "1.0.0" 379 | } 380 | } 381 | } 382 | } 383 | -------------------------------------------------------------------------------- /Assets/Im/Script/KeyframeReduction.cs: -------------------------------------------------------------------------------- 1 | // 2 | // This codes is licensed under CC0 1.0. 3 | // https://creativecommons.org/publicdomain/zero/1.0/ 4 | // 5 | 6 | using System.Collections.Generic; 7 | using System.IO; 8 | using UnityEngine; 9 | using System; 10 | using System.Linq; 11 | using System.Threading; 12 | using System.Threading.Tasks; 13 | 14 | #if UNITY_EDITOR 15 | using UnityEditor; 16 | using MathNet.Numerics; 17 | 18 | namespace Im { 19 | 20 | class ReductionCurve { 21 | public enum CurveType { 22 | Discrete, 23 | Linear, 24 | Smooth, 25 | Degree, 26 | Radian, 27 | } 28 | 29 | private CurveType curveType; 30 | public AnimationCurve curve; 31 | private int order; 32 | private double threshold; 33 | 34 | private bool first; 35 | private float lastValue; 36 | private double queueHeadTime; 37 | private double queueHeadValue; 38 | private Stack queueTimes; 39 | private Stack queueValues; 40 | private bool hasLastKeyframe; 41 | private Keyframe lastKeyframe; 42 | public ReductionCurve(double threshold, CurveType curveType = CurveType.Smooth) { 43 | this.threshold = threshold; 44 | this.curveType = curveType; 45 | if(curveType == CurveType.Discrete) { 46 | order = 0; 47 | } else if(curveType == CurveType.Linear) { 48 | order = 1; 49 | } else { 50 | order = 3; 51 | } 52 | 53 | curve = new AnimationCurve(); 54 | first = true; 55 | queueHeadTime = 0; 56 | queueHeadValue = 0; 57 | queueTimes = new Stack(); 58 | queueValues = new Stack(); 59 | hasLastKeyframe = false; 60 | lastKeyframe = new Keyframe(0, 0); 61 | } 62 | 63 | public List timeQueue = new List(); 64 | 65 | private float PickValue(float c) { 66 | if(first) { 67 | first = false; 68 | lastValue = c; 69 | } 70 | if(curveType == CurveType.Degree) { 71 | c -= lastValue; 72 | c = (((c + 180) % 360 + 360) % 360) - 180; 73 | c += lastValue; 74 | lastValue = c; 75 | } 76 | return c; 77 | } 78 | 79 | public void Tick(float t, float value) { 80 | float v = PickValue(value); 81 | if(queueTimes.Count == 0) { 82 | queueHeadTime = t; 83 | queueHeadValue = v; 84 | } 85 | queueTimes.Push(t - queueHeadTime); 86 | queueValues.Push(v - queueHeadValue); 87 | if(queueTimes.Count <= order + 1) { 88 | return; 89 | } 90 | 91 | double[] ts = queueTimes.ToArray(); 92 | double[] vs = queueValues.ToArray(); 93 | double[] coeffs = Fit.Polynomial(ts, vs, order); 94 | double res = 0; 95 | for(int i=0;i threshold) { 101 | Flush(false); 102 | } 103 | } 104 | 105 | public void Done() { 106 | Flush(true); 107 | } 108 | 109 | private Keyframe CreateKeyframe(double t, double[] coeffs) { 110 | double t0 = queueHeadTime; 111 | double t1 = queueHeadTime + t; 112 | double p0 = queueHeadValue + coeffs[0]; 113 | double p1 = p0; 114 | for(int j=1;j<=order;j++) { 115 | p1 += coeffs[j] * Math.Pow(t, j); 116 | } 117 | double v0 = 0; 118 | double v1 = 0; 119 | if(order == 1) { 120 | v0 = v1 = coeffs[1]; 121 | } else if(order == 3) { 122 | v0 = coeffs[1]; 123 | v1 = coeffs[1] + 2 * coeffs[2] * t + 3 * coeffs[3] * t * t; 124 | } 125 | 126 | if(!hasLastKeyframe) { 127 | hasLastKeyframe = true; 128 | lastKeyframe = new Keyframe((float) t0, (float) p0, 0, 0); 129 | } 130 | 131 | lastKeyframe.outTangent = (float) v0; 132 | Keyframe keyframe = new Keyframe((float) t1, (float) p1, (float) v1, 0); 133 | return keyframe; 134 | } 135 | 136 | private void Flush(bool final) { 137 | if(queueTimes.Count == 0) return; 138 | 139 | double qht = 0; 140 | double qhv = 0; 141 | Stack qt = new Stack(); 142 | Stack qv = new Stack(); 143 | if(!final) { 144 | if(order == 3) { 145 | double t1 = queueTimes.Pop(); 146 | double t0 = queueTimes.Pop(); 147 | qht = queueHeadTime + t0; 148 | qt.Push(0); 149 | qt.Push(t1 - t0); 150 | double v1 = queueValues.Pop(); 151 | double v0 = queueValues.Pop(); 152 | qhv = queueHeadValue + v0; 153 | qv.Push(0); 154 | qv.Push(v1 - v0); 155 | queueTimes.Push(t0); 156 | queueValues.Push(v0); 157 | } else { 158 | double t0 = queueTimes.Pop(); 159 | qht = queueHeadTime + t0; 160 | qt.Push(0); 161 | double v0 = queueValues.Pop(); 162 | qhv = queueHeadValue + v0; 163 | qv.Push(0); 164 | } 165 | } 166 | double[] ts = queueTimes.ToArray(); 167 | double[] vs = queueValues.ToArray(); 168 | double[] coeffs; 169 | if(ts.Length >= order + 1) { 170 | coeffs = Fit.Polynomial(ts, vs, order); 171 | } else { 172 | double[] cs = Fit.Polynomial(ts, vs, ts.Length - 1); 173 | coeffs = new double[order+1]; 174 | cs.CopyTo(coeffs, 0); 175 | } 176 | Keyframe keyframe = CreateKeyframe(ts[0], coeffs); 177 | int res = curve.AddKey(lastKeyframe); 178 | if(res == -1) { 179 | Debug.LogError("Failed to add keyframe"); 180 | } 181 | if(final || order != 3) { 182 | curve.AddKey(keyframe); 183 | hasLastKeyframe = false; 184 | } else { 185 | lastKeyframe = keyframe; 186 | } 187 | 188 | queueHeadTime = qht; 189 | queueHeadValue = qhv; 190 | queueTimes = qt; 191 | queueValues = qv; 192 | } 193 | } 194 | 195 | public class KeyframeReduction : EditorWindow 196 | { 197 | private AnimationClip clip; 198 | private AnimationClip outputClip; 199 | private double threshold = 0.000001; 200 | private float dt = 1 / 60.0f; 201 | private bool bruteForce = true; 202 | 203 | [MenuItem("Window/Im/Keyframe Reduction")] 204 | public static void ShowWindow() { 205 | GetWindow(typeof(KeyframeReduction)); 206 | } 207 | 208 | private void OnGUI() { 209 | GUILayout.Label("Keyframe Reduction", EditorStyles.boldLabel); 210 | clip = EditorGUILayout.ObjectField("Animation Clip", clip, typeof(AnimationClip), false) as AnimationClip; 211 | threshold = EditorGUILayout.DoubleField(new GUIContent("Threshold", "error tolerance threshold"), threshold); 212 | dt = EditorGUILayout.FloatField(new GUIContent("Delta Time [s]", "time interval for 1 frame"), dt); 213 | bruteForce = EditorGUILayout.Toggle(new GUIContent("Brute Force Mode", "If enabled, ALL FRAMES will be evaluated. High quality but long processing time."), bruteForce); 214 | EditorGUILayout.Space(10); 215 | outputClip = EditorGUILayout.ObjectField("Output Clip", outputClip, typeof(AnimationClip), false) as AnimationClip; 216 | if(GUILayout.Button("Execute")) { 217 | Run(); 218 | } 219 | } 220 | 221 | private void Run() { 222 | var task = new KeyframeReductionTask(clip, outputClip, threshold, dt, bruteForce); 223 | task.Run(); 224 | } 225 | } 226 | 227 | public class KeyframeReductionTask 228 | { 229 | private readonly AnimationClip clip; 230 | private readonly AnimationClip outputClip; 231 | private readonly double threshold; 232 | private readonly float dt; 233 | private readonly bool bruteForce; 234 | private bool cancel = false; 235 | private int progressId; 236 | private int curveCount = 0; 237 | private int doneCurveCount = 0; 238 | private int reductionLoops = 0; 239 | private int doneReductionLoops = 0; 240 | 241 | public KeyframeReductionTask(AnimationClip clip, AnimationClip outputClip, double threshold, float dt, bool bruteForce) { 242 | this.clip = clip; 243 | this.outputClip = outputClip; 244 | this.threshold = threshold; 245 | this.dt = dt; 246 | this.bruteForce = bruteForce; 247 | } 248 | 249 | public async void Run() { 250 | if(clip == null) return; 251 | 252 | progressId = Progress.Start("Keyframe Reduction"); 253 | Progress.RegisterCancelCallback(progressId, () => { 254 | cancel = true; 255 | return true; 256 | }); 257 | 258 | AnimationClip ac = new AnimationClip(); 259 | EditorCurveBinding[] allBindings = AnimationUtility.GetCurveBindings(clip); 260 | AnimationCurve[] curves = allBindings.Select(b => AnimationUtility.GetEditorCurve(clip, b)).ToArray(); 261 | AnimationCurve[] reducedCurves = new AnimationCurve[allBindings.Length]; 262 | 263 | curveCount = allBindings.Length; 264 | foreach(var c in curves) { 265 | if(!bruteForce) { 266 | reductionLoops += c.keys.Length; 267 | } else { 268 | float endTime = c.keys[c.keys.Length-1].time; 269 | // This value may differ slightly from the actual number of reduction loops 270 | // due to floating point errors. 271 | reductionLoops += Mathf.CeilToInt(endTime / dt); 272 | } 273 | } 274 | 275 | await Task.Run(() => { 276 | Parallel.For(0, allBindings.Length, i => { 277 | EditorCurveBinding binding = allBindings[i]; 278 | AnimationCurve curve = curves[i]; 279 | 280 | ReductionCurve.CurveType type = ReductionCurve.CurveType.Smooth; 281 | if(binding.propertyName == "m_IsActive") type = ReductionCurve.CurveType.Discrete; 282 | if(binding.propertyName.Contains("Rotation")) type = ReductionCurve.CurveType.Radian; 283 | // Note: Add any binding type you want here, or send me a PR! 284 | 285 | reducedCurves[i] = ExecuteReduction(curve, type); 286 | 287 | Interlocked.Increment(ref doneCurveCount); 288 | UpdateProgress(); 289 | }); 290 | }); 291 | if(cancel) return; 292 | 293 | for(int i=0;i