declare module 'babylonjs/optimizations' {
    /**
     * A simplifier interface for future simplification implementations.
     */
    interface ISimplifier {
        /**
         * Simplification of a given mesh according to the given settings.
         * Since this requires computation, it is assumed that the function runs async.
         * @param settings The settings of the simplification, including quality and distance
         * @param successCallback A callback that will be called after the mesh was simplified.
         * @param errorCallback in case of an error, this callback will be called. optional.
         */
        simplify(settings: ISimplificationSettings, successCallback: (simplifiedMeshes: Mesh) => void, errorCallback?: () => void): void;
    }
    /**
     * Expected simplification settings.
     * Quality should be between 0 and 1 (1 being 100%, 0 being 0%);
     */
    interface ISimplificationSettings {
        quality: number;
        distance: number;
        optimizeMesh?: boolean;
    }
    class SimplificationSettings implements ISimplificationSettings {
        quality: number;
        distance: number;
        optimizeMesh: boolean | undefined;
        constructor(quality: number, distance: number, optimizeMesh?: boolean | undefined);
    }
    interface ISimplificationTask {
        settings: Array<ISimplificationSettings>;
        simplificationType: SimplificationType;
        mesh: Mesh;
        successCallback?: () => void;
        parallelProcessing: boolean;
    }
    class SimplificationQueue {
        private _simplificationArray;
        running: boolean;
        constructor();
        addTask(task: ISimplificationTask): void;
        executeNext(): void;
        runSimplification(task: ISimplificationTask): void;
        private getSimplifier(task);
    }
    /**
     * The implemented types of simplification.
     * At the moment only Quadratic Error Decimation is implemented.
     */
    enum SimplificationType {
        QUADRATIC = 0,
    }
    class DecimationTriangle {
        vertices: Array<DecimationVertex>;
        normal: Vector3;
        error: Array<number>;
        deleted: boolean;
        isDirty: boolean;
        borderFactor: number;
        deletePending: boolean;
        originalOffset: number;
        constructor(vertices: Array<DecimationVertex>);
    }
    class DecimationVertex {
        position: Vector3;
        id: number;
        q: QuadraticMatrix;
        isBorder: boolean;
        triangleStart: number;
        triangleCount: number;
        originalOffsets: Array<number>;
        constructor(position: Vector3, id: number);
        updatePosition(newPosition: Vector3): void;
    }
    class QuadraticMatrix {
        data: Array<number>;
        constructor(data?: Array<number>);
        det(a11: number, a12: number, a13: number, a21: number, a22: number, a23: number, a31: number, a32: number, a33: number): number;
        addInPlace(matrix: QuadraticMatrix): void;
        addArrayInPlace(data: Array<number>): void;
        add(matrix: QuadraticMatrix): QuadraticMatrix;
        static FromData(a: number, b: number, c: number, d: number): QuadraticMatrix;
        static DataFromNumbers(a: number, b: number, c: number, d: number): number[];
    }
    class Reference {
        vertexId: number;
        triangleId: number;
        constructor(vertexId: number, triangleId: number);
    }
    /**
     * An implementation of the Quadratic Error simplification algorithm.
     * Original paper : http://www1.cs.columbia.edu/~cs4162/html05s/garland97.pdf
     * Ported mostly from QSlim and http://voxels.blogspot.de/2014/05/quadric-mesh-simplification-with-source.html to babylon JS
     * @author RaananW
     */
    class QuadraticErrorSimplification implements ISimplifier {
        private _mesh;
        private triangles;
        private vertices;
        private references;
        private _reconstructedMesh;
        syncIterations: number;
        aggressiveness: number;
        decimationIterations: number;
        boundingBoxEpsilon: number;
        constructor(_mesh: Mesh);
        simplify(settings: ISimplificationSettings, successCallback: (simplifiedMesh: Mesh) => void): void;
        private runDecimation(settings, submeshIndex, successCallback);
        private initWithMesh(submeshIndex, callback, optimizeMesh?);
        private init(callback);
        private reconstructMesh(submeshIndex);
        private initDecimatedMesh();
        private isFlipped(vertex1, vertex2, point, deletedArray, borderFactor, delTr);
        private updateTriangles(origVertex, vertex, deletedArray, deletedTriangles);
        private identifyBorder();
        private updateMesh(identifyBorders?);
        private vertexError(q, point);
        private calculateError(vertex1, vertex2, pointResult?, normalResult?, uvResult?, colorResult?);
    }
}

declare module 'babylonjs/optimizations' {
    class MeshLODLevel {
        distance: number;
        mesh: Mesh;
        constructor(distance: number, mesh: Mesh);
    }
}

declare module 'babylonjs/optimizations' {
    class SceneOptimization {
        priority: number;
        apply: (scene: Scene) => boolean;
        constructor(priority?: number);
    }
    class TextureOptimization extends SceneOptimization {
        priority: number;
        maximumSize: number;
        constructor(priority?: number, maximumSize?: number);
        apply: (scene: Scene) => boolean;
    }
    class HardwareScalingOptimization extends SceneOptimization {
        priority: number;
        maximumScale: number;
        private _currentScale;
        constructor(priority?: number, maximumScale?: number);
        apply: (scene: Scene) => boolean;
    }
    class ShadowsOptimization extends SceneOptimization {
        apply: (scene: Scene) => boolean;
    }
    class PostProcessesOptimization extends SceneOptimization {
        apply: (scene: Scene) => boolean;
    }
    class LensFlaresOptimization extends SceneOptimization {
        apply: (scene: Scene) => boolean;
    }
    class ParticlesOptimization extends SceneOptimization {
        apply: (scene: Scene) => boolean;
    }
    class RenderTargetsOptimization extends SceneOptimization {
        apply: (scene: Scene) => boolean;
    }
    class MergeMeshesOptimization extends SceneOptimization {
        static _UpdateSelectionTree: boolean;
        static UpdateSelectionTree: boolean;
        private _canBeMerged;
        apply: (scene: Scene, updateSelectionTree?: boolean | undefined) => boolean;
    }
    class SceneOptimizerOptions {
        targetFrameRate: number;
        trackerDuration: number;
        optimizations: SceneOptimization[];
        constructor(targetFrameRate?: number, trackerDuration?: number);
        static LowDegradationAllowed(targetFrameRate?: number): SceneOptimizerOptions;
        static ModerateDegradationAllowed(targetFrameRate?: number): SceneOptimizerOptions;
        static HighDegradationAllowed(targetFrameRate?: number): SceneOptimizerOptions;
    }
    class SceneOptimizer {
        static _CheckCurrentState(scene: Scene, options: SceneOptimizerOptions, currentPriorityLevel: number, onSuccess?: () => void, onFailure?: () => void): void;
        static OptimizeAsync(scene: Scene, options?: SceneOptimizerOptions, onSuccess?: () => void, onFailure?: () => void): void;
    }
}

import {EffectFallbacks,EffectCreationOptions,Effect,Nullable,float,double,int,FloatArray,IndicesArray,KeyboardEventTypes,KeyboardInfo,KeyboardInfoPre,PointerEventTypes,PointerInfoBase,PointerInfoPre,PointerInfo,ToGammaSpace,ToLinearSpace,Epsilon,Color3,Color4,Vector2,Vector3,Vector4,ISize,Size,Quaternion,Matrix,Plane,Viewport,Frustum,Space,Axis,BezierCurve,Orientation,Angle,Arc2,Path2,Path3D,Curve3,PositionNormalVertex,PositionNormalTextureVertex,Tmp,Scalar,expandToProperty,serialize,serializeAsTexture,serializeAsColor3,serializeAsFresnelParameters,serializeAsVector2,serializeAsVector3,serializeAsMeshReference,serializeAsColorCurves,serializeAsColor4,serializeAsImageProcessingConfiguration,serializeAsQuaternion,SerializationHelper,EventState,Observer,MultiObserver,Observable,SmartArray,SmartArrayNoDuplicate,IAnimatable,LoadFileError,RetryStrategy,IFileRequest,Tools,PerfCounter,className,AsyncLoop,_AlphaState,_DepthCullingState,_StencilState,InstancingAttributeInfo,RenderTargetCreationOptions,EngineCapabilities,EngineOptions,IDisplayChangedEventArgs,Engine,Node,BoundingSphere,BoundingBox,ICullable,BoundingInfo,TransformNode,AbstractMesh,Light,Camera,RenderingManager,RenderingGroup,IDisposable,IActiveMeshCandidateProvider,RenderingGroupInfo,Scene,Buffer,VertexBuffer,InternalTexture,BaseTexture,Texture,_InstancesBatch,Mesh,BaseSubMesh,SubMesh,MaterialDefines,Material,UniformBuffer,IGetSetVerticesData,VertexData,Geometry,_PrimitiveGeometry,RibbonGeometry,BoxGeometry,SphereGeometry,DiscGeometry,CylinderGeometry,TorusGeometry,GroundGeometry,TiledGroundGeometry,PlaneGeometry,TorusKnotGeometry,PostProcessManager,PerformanceMonitor,RollingAverage,IImageProcessingConfigurationDefines,ImageProcessingConfiguration,ColorGradingTexture,ColorCurves,Behavior,MaterialHelper,PushMaterial,StandardMaterialDefines,StandardMaterial} from 'babylonjs/core';
import {EngineInstrumentation,SceneInstrumentation,_TimeToken} from 'babylonjs/instrumentation';
import {Particle,IParticleSystem,ParticleSystem,BoxParticleEmitter,ConeParticleEmitter,SphereParticleEmitter,SphereDirectedParticleEmitter,IParticleEmitterType} from 'babylonjs/particles';
import {GPUParticleSystem} from 'babylonjs/gpuParticles';
import {FramingBehavior,BouncingBehavior,AutoRotationBehavior} from 'babylonjs/cameraBehaviors';
import {NullEngineOptions,NullEngine} from 'babylonjs/nullEngine';
import {TextureTools} from 'babylonjs/textureTools';
import {SolidParticle,ModelShape,DepthSortedParticle,SolidParticleSystem} from 'babylonjs/solidParticles';
import {Collider,CollisionWorker,ICollisionCoordinator,SerializedMesh,SerializedSubMesh,SerializedGeometry,BabylonMessage,SerializedColliderToWorker,WorkerTaskType,WorkerReply,CollisionReplyPayload,InitPayload,CollidePayload,UpdatePayload,WorkerReplyType,CollisionCoordinatorWorker,CollisionCoordinatorLegacy} from 'babylonjs/collisions';
import {IntersectionInfo,PickingInfo,Ray} from 'babylonjs/picking';
import {SpriteManager,Sprite} from 'babylonjs/sprites';
import {AnimationRange,AnimationEvent,PathCursor,Animation,TargetedAnimation,AnimationGroup,RuntimeAnimation,Animatable,IEasingFunction,EasingFunction,CircleEase,BackEase,BounceEase,CubicEase,ElasticEase,ExponentialEase,PowerEase,QuadraticEase,QuarticEase,QuinticEase,SineEase,BezierCurveEase} from 'babylonjs/animations';
import {Condition,ValueCondition,PredicateCondition,StateCondition,Action,ActionEvent,ActionManager,InterpolateValueAction,SwitchBooleanAction,SetStateAction,SetValueAction,IncrementValueAction,PlayAnimationAction,StopAnimationAction,DoNothingAction,CombineAction,ExecuteCodeAction,SetParentAction,PlaySoundAction,StopSoundAction} from 'babylonjs/actions';
import {GroundMesh,InstancedMesh,LinesMesh} from 'babylonjs/additionalMeshes';
import {ShaderMaterial} from 'babylonjs/shaderMaterial';
import {MeshBuilder} from 'babylonjs/meshBuilder';
import {PBRBaseMaterial,PBRBaseSimpleMaterial,PBRMaterial,PBRMetallicRoughnessMaterial,PBRSpecularGlossinessMaterial} from 'babylonjs/pbrMaterial';
import {CameraInputTypes,ICameraInput,CameraInputsMap,CameraInputsManager,TargetCamera} from 'babylonjs/targetCamera';
import {ArcRotateCameraKeyboardMoveInput,ArcRotateCameraMouseWheelInput,ArcRotateCameraPointersInput,ArcRotateCameraInputsManager,ArcRotateCamera} from 'babylonjs/arcRotateCamera';
import {FreeCameraMouseInput,FreeCameraKeyboardMoveInput,FreeCameraInputsManager,FreeCamera} from 'babylonjs/freeCamera';
import {HemisphericLight} from 'babylonjs/hemisphericLight';
import {IShadowLight,ShadowLight,PointLight} from 'babylonjs/pointLight';
import {DirectionalLight} from 'babylonjs/directionalLight';
import {SpotLight} from 'babylonjs/spotLight';
import {CubeTexture,RenderTargetTexture,IMultiRenderTargetOptions,MultiRenderTarget,MirrorTexture,RefractionTexture,DynamicTexture,VideoTexture,RawTexture} from 'babylonjs/additionalTextures';
import {AudioEngine,Sound,SoundTrack,Analyser} from 'babylonjs/audio';
import {ILoadingScreen,DefaultLoadingScreen,SceneLoaderProgressEvent,ISceneLoaderPluginExtensions,ISceneLoaderPluginFactory,ISceneLoaderPlugin,ISceneLoaderPluginAsync,SceneLoader,FilesInput} from 'babylonjs/loader';
import {IShadowGenerator,ShadowGenerator} from 'babylonjs/shadows';
import {StringDictionary} from 'babylonjs/stringDictionary';
import {Tags,AndOrNotEvaluator} from 'babylonjs/userData';
import {FresnelParameters} from 'babylonjs/fresnel';
import {MultiMaterial} from 'babylonjs/multiMaterial';
import {Database} from 'babylonjs/offline';
import {FreeCameraTouchInput,TouchCamera} from 'babylonjs/touchCamera';
import {ProceduralTexture,CustomProceduralTexture} from 'babylonjs/procedural';
import {FreeCameraGamepadInput,ArcRotateCameraGamepadInput,GamepadManager,StickValues,GamepadButtonChanges,Gamepad,GenericPad,Xbox360Button,Xbox360Dpad,Xbox360Pad,PoseEnabledControllerType,MutableGamepadButton,ExtendedGamepadButton,PoseEnabledControllerHelper,PoseEnabledController,WebVRController,OculusTouchController,ViveController,GenericController,WindowsMotionController} from 'babylonjs/gamepad';
import {FollowCamera,ArcFollowCamera,UniversalCamera,GamepadCamera} from 'babylonjs/additionalCameras';
import {DepthRenderer} from 'babylonjs/depthRenderer';
import {GeometryBufferRenderer} from 'babylonjs/geometryBufferRenderer';
import {PostProcessOptions,PostProcess,PassPostProcess} from 'babylonjs/postProcesses';
import {BlurPostProcess} from 'babylonjs/additionalPostProcess_blur';
import {FxaaPostProcess} from 'babylonjs/additionalPostProcess_fxaa';
import {HighlightsPostProcess} from 'babylonjs/additionalPostProcess_highlights';
import {RefractionPostProcess,BlackAndWhitePostProcess,ConvolutionPostProcess,FilterPostProcess,VolumetricLightScatteringPostProcess,ColorCorrectionPostProcess,TonemappingOperator,TonemapPostProcess,DisplayPassPostProcess,ImageProcessingPostProcess} from 'babylonjs/additionalPostProcesses';
import {PostProcessRenderPipelineManager,PostProcessRenderPass,PostProcessRenderEffect,PostProcessRenderPipeline} from 'babylonjs/renderingPipeline';
import {SSAORenderingPipeline,SSAO2RenderingPipeline,LensRenderingPipeline,StandardRenderingPipeline} from 'babylonjs/additionalRenderingPipeline';
import {DefaultRenderingPipeline} from 'babylonjs/defaultRenderingPipeline';
import {Bone,BoneIKController,BoneLookController,Skeleton} from 'babylonjs/bones';
import {SphericalPolynomial,SphericalHarmonics,CubeMapToSphericalPolynomialTools,CubeMapInfo,PanoramaToCubeMapTools,HDRInfo,HDRTools,HDRCubeTexture} from 'babylonjs/hdr';
import {CSG} from 'babylonjs/csg';
import {Polygon,PolygonMeshBuilder} from 'babylonjs/polygonMesh';
import {LensFlare,LensFlareSystem} from 'babylonjs/lensFlares';
import {PhysicsJointData,PhysicsJoint,DistanceJoint,MotorEnabledJoint,HingeJoint,Hinge2Joint,IMotorEnabledJoint,DistanceJointData,SpringJointData,PhysicsImpostorParameters,IPhysicsEnabledObject,PhysicsImpostor,PhysicsImpostorJoint,PhysicsEngine,IPhysicsEnginePlugin,PhysicsHelper,PhysicsRadialExplosionEvent,PhysicsGravitationalFieldEvent,PhysicsUpdraftEvent,PhysicsVortexEvent,PhysicsRadialImpulseFalloff,PhysicsUpdraftMode,PhysicsForceAndContactPoint,PhysicsRadialExplosionEventData,PhysicsGravitationalFieldEventData,PhysicsUpdraftEventData,PhysicsVortexEventData,CannonJSPlugin,OimoJSPlugin} from 'babylonjs/physics';
import {TGATools,DDSInfo,DDSTools,KhronosTextureContainer} from 'babylonjs/textureFormats';
import {Debug,RayHelper,DebugLayer,BoundingBoxRenderer} from 'babylonjs/debug';
import {MorphTarget,MorphTargetManager} from 'babylonjs/morphTargets';
import {IOctreeContainer,Octree,OctreeBlock} from 'babylonjs/octrees';
import {SIMDHelper} from 'babylonjs/simd';
import {VRDistortionCorrectionPostProcess,AnaglyphPostProcess,StereoscopicInterlacePostProcess,FreeCameraDeviceOrientationInput,ArcRotateCameraVRDeviceOrientationInput,VRCameraMetrics,DevicePose,PoseControlled,WebVROptions,WebVRFreeCamera,DeviceOrientationCamera,VRDeviceOrientationFreeCamera,VRDeviceOrientationGamepadCamera,VRDeviceOrientationArcRotateCamera,AnaglyphFreeCamera,AnaglyphArcRotateCamera,AnaglyphGamepadCamera,AnaglyphUniversalCamera,StereoscopicFreeCamera,StereoscopicArcRotateCamera,StereoscopicGamepadCamera,StereoscopicUniversalCamera,VRTeleportationOptions,VRExperienceHelperOptions,VRExperienceHelper} from 'babylonjs/vr';
import {JoystickAxis,VirtualJoystick,VirtualJoysticksCamera,FreeCameraVirtualJoystickInput} from 'babylonjs/virtualJoystick';
import {OutlineRenderer,EdgesRenderer,IHighlightLayerOptions,HighlightLayer} from 'babylonjs/highlights';
import {SceneSerializer} from 'babylonjs/serialization';
import {AssetTaskState,AbstractAssetTask,IAssetsProgressEvent,AssetsProgressEvent,MeshAssetTask,TextFileAssetTask,BinaryFileAssetTask,ImageAssetTask,ITextureAssetTask,TextureAssetTask,CubeTextureAssetTask,HDRCubeTextureAssetTask,AssetsManager} from 'babylonjs/assetsManager';
import {ReflectionProbe} from 'babylonjs/probes';
import {BackgroundMaterial} from 'babylonjs/backgroundMaterial';
import {Layer} from 'babylonjs/layer';
import {IEnvironmentHelperOptions,EnvironmentHelper} from 'babylonjs/environmentHelper';