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* as WEBIFC from \"web-ifc\";\r\nimport * as THREE from \"three\";\r\nimport * as FRAGS from \"bim-fragment\";\r\nimport { Event, Component } from \"../../../base-types\";\r\nimport { ToolComponent } from \"../../../core\";\r\nimport { IfcStreamingSettings } from \"./streaming-settings\";\r\nimport { isPointInFrontOfPlane, obbFromPoints } from \"../../../utils\";\r\nimport { SpatialStructure } from \"../../FragmentIfcLoader/src/spatial-structure\";\r\nimport { CivilReader } from \"../../FragmentIfcLoader/src/civil-reader\";\r\nimport { IfcMetadataReader } from \"../../FragmentIfcLoader/src/ifc-metadata-reader\";\r\n// TODO: Deduplicate with IfcFragmentLoader\r\nexport class FragmentIfcStreamConverter extends Component {\r\n    constructor(components) {\r\n        super(components);\r\n        this.onGeometryStreamed = new Event();\r\n        this.onAssetStreamed = new Event();\r\n        this.onProgress = new Event();\r\n        this.onIfcLoaded = new Event();\r\n        /** {@link Disposable.onDisposed} */\r\n        this.onDisposed = new Event();\r\n        this.settings = new IfcStreamingSettings();\r\n        this.enabled = true;\r\n        this._spatialTree = new SpatialStructure();\r\n        this._metaData = new IfcMetadataReader();\r\n        this._visitedGeometries = new Map();\r\n        this._webIfc = new WEBIFC.IfcAPI();\r\n        this._streamSerializer = new FRAGS.StreamSerializer();\r\n        this._geometries = new Map();\r\n        this._geometryCount = 0;\r\n        this._civil = new CivilReader();\r\n        this._groupSerializer = new FRAGS.Serializer();\r\n        this._assets = [];\r\n        this._meshesWithHoles = new Set();\r\n        this.components.tools.add(FragmentIfcStreamConverter.uuid, this);\r\n        this.settings.excludedCategories.add(WEBIFC.IFCOPENINGELEMENT);\r\n    }\r\n    get() {\r\n        return this._webIfc;\r\n    }\r\n    async dispose() {\r\n        this.onIfcLoaded.reset();\r\n        this.onGeometryStreamed.reset();\r\n        this.onAssetStreamed.reset();\r\n        this._webIfc = null;\r\n        await this.onDisposed.trigger(FragmentIfcStreamConverter.uuid);\r\n        this.onDisposed.reset();\r\n    }\r\n    async streamFromBuffer(data) {\r\n        const before = performance.now();\r\n        await this.readIfcFile(data);\r\n        await this.streamAllGeometries();\r\n        this.cleanUp();\r\n        console.log(`Streaming the IFC took ${performance.now() - before} ms!`);\r\n    }\r\n    async streamFromCallBack(loadCallback) {\r\n        const before = performance.now();\r\n        await this.streamIfcFile(loadCallback);\r\n        await this.streamAllGeometries();\r\n        this.cleanUp();\r\n        console.log(`Streaming the IFC took ${performance.now() - before} ms!`);\r\n    }\r\n    async readIfcFile(data) {\r\n        const { path, absolute, logLevel } = this.settings.wasm;\r\n        this._webIfc.SetWasmPath(path, absolute);\r\n        await this._webIfc.Init();\r\n        if (logLevel) {\r\n            this._webIfc.SetLogLevel(logLevel);\r\n        }\r\n        this._webIfc.OpenModel(data, this.settings.webIfc);\r\n    }\r\n    async streamIfcFile(loadCallback) {\r\n        const { path, absolute, logLevel } = this.settings.wasm;\r\n        this._webIfc.SetWasmPath(path, absolute);\r\n        await this._webIfc.Init();\r\n        if (logLevel) {\r\n            this._webIfc.SetLogLevel(logLevel);\r\n        }\r\n        this._webIfc.OpenModelFromCallback(loadCallback, this.settings.webIfc);\r\n    }\r\n    async streamAllGeometries() {\r\n        const { minGeometrySize, minAssetsSize } = this.settings;\r\n        // Precompute the level to which each item belongs\r\n        this._spatialTree.setUp(this._webIfc);\r\n        // Get all IFC objects and group them in chunks of specified size\r\n        const allIfcEntities = this._webIfc.GetIfcEntityList(0);\r\n        const chunks = [[]];\r\n        const group = new FRAGS.FragmentsGroup();\r\n        const { FILE_NAME, FILE_DESCRIPTION } = WEBIFC;\r\n        group.ifcMetadata = {\r\n            name: this._metaData.get(this._webIfc, FILE_NAME),\r\n            description: this._metaData.get(this._webIfc, FILE_DESCRIPTION),\r\n            schema: this._webIfc.GetModelSchema(0) || \"IFC2X3\",\r\n            maxExpressID: this._webIfc.GetMaxExpressID(0),\r\n        };\r\n        let counter = 0;\r\n        let index = 0;\r\n        for (const type of allIfcEntities) {\r\n            if (!this._webIfc.IsIfcElement(type) && type !== WEBIFC.IFCSPACE) {\r\n                continue;\r\n            }\r\n            if (this.settings.excludedCategories.has(type)) {\r\n                continue;\r\n            }\r\n            const result = this._webIfc.GetLineIDsWithType(0, type);\r\n            const size = result.size();\r\n            for (let i = 0; i < size; i++) {\r\n                if (counter > minGeometrySize) {\r\n                    counter = 0;\r\n                    index++;\r\n                    chunks.push([]);\r\n                }\r\n                const itemID = result.get(i);\r\n                chunks[index].push(itemID);\r\n                const level = this._spatialTree.itemsByFloor[itemID] || 0;\r\n                group.data.set(itemID, [[], [level, type]]);\r\n                counter++;\r\n            }\r\n        }\r\n        this._spatialTree.cleanUp();\r\n        let nextProgress = 0.01;\r\n        let chunkCounter = 0;\r\n        for (const chunk of chunks) {\r\n            chunkCounter++;\r\n            this._webIfc.StreamMeshes(0, chunk, (mesh) => {\r\n                this.getMesh(this._webIfc, mesh, group);\r\n            });\r\n            if (this._geometryCount > minGeometrySize) {\r\n                await this.streamGeometries();\r\n            }\r\n            if (this._assets.length > minAssetsSize) {\r\n                await this.streamAssets();\r\n            }\r\n            const currentProgress = chunkCounter / chunks.length;\r\n            if (currentProgress > nextProgress) {\r\n                nextProgress += 0.01;\r\n                nextProgress = Math.max(nextProgress, currentProgress);\r\n                await this.onProgress.trigger(Math.round(nextProgress * 100) / 100);\r\n            }\r\n        }\r\n        // Stream remaining assets and geometries\r\n        if (this._geometryCount) {\r\n            await this.streamGeometries();\r\n        }\r\n        if (this._assets.length) {\r\n            await this.streamAssets();\r\n        }\r\n        const { opaque, transparent } = group.geometryIDs;\r\n        for (const [id, { index, uuid }] of this._visitedGeometries) {\r\n            group.keyFragments.set(index, uuid);\r\n            const geometryID = id > 1 ? opaque : transparent;\r\n            geometryID.set(id, index);\r\n        }\r\n        // Delete assets that have no geometric representation\r\n        const ids = group.data.keys();\r\n        for (const id of ids) {\r\n            const [keys] = group.data.get(id);\r\n            if (!keys.length) {\r\n                group.data.delete(id);\r\n            }\r\n        }\r\n        const matrix = this._webIfc.GetCoordinationMatrix(0);\r\n        group.coordinationMatrix.fromArray(matrix);\r\n        group.civilData = this._civil.read(this._webIfc);\r\n        const buffer = this._groupSerializer.export(group);\r\n        await this.onIfcLoaded.trigger(buffer);\r\n        group.dispose(true);\r\n    }\r\n    cleanUp() {\r\n        this._webIfc = null;\r\n        this._webIfc = new WEBIFC.IfcAPI();\r\n        this._visitedGeometries.clear();\r\n        this._geometries.clear();\r\n        this._assets = [];\r\n        this._meshesWithHoles.clear();\r\n    }\r\n    getMesh(webIfc, mesh, group) {\r\n        const size = mesh.geometries.size();\r\n        const id = mesh.expressID;\r\n        const asset = { id, geometries: [] };\r\n        if (mesh.expressID === 664833) {\r\n            console.log(\"Heyyy\");\r\n        }\r\n        for (let i = 0; i < size; i++) {\r\n            const geometry = mesh.geometries.get(i);\r\n            const geometryID = geometry.geometryExpressID;\r\n            // Distinguish between opaque and transparent geometries\r\n            const factor = geometry.color.w === 1 ? 1 : -1;\r\n            const transpGeometryID = geometryID * factor;\r\n            if (!this._visitedGeometries.has(transpGeometryID)) {\r\n                if (!this._visitedGeometries.has(geometryID)) {\r\n                    // This is the first time we see this geometry\r\n                    this.getGeometry(webIfc, geometryID);\r\n                }\r\n                // Save geometry for fragment generation\r\n                // separating transparent and opaque geometries\r\n                const index = this._visitedGeometries.size;\r\n                const uuid = THREE.MathUtils.generateUUID();\r\n                this._visitedGeometries.set(transpGeometryID, { uuid, index });\r\n            }\r\n            const geometryData = this._visitedGeometries.get(transpGeometryID);\r\n            if (geometryData === undefined) {\r\n                throw new Error(\"Error getting geometry data for streaming!\");\r\n            }\r\n            const data = group.data.get(id);\r\n            if (!data) {\r\n                throw new Error(\"Data not found!\");\r\n            }\r\n            data[0].push(geometryData.index);\r\n            const { x, y, z, w } = geometry.color;\r\n            const color = [x, y, z, w];\r\n            const transformation = geometry.flatTransformation;\r\n            asset.geometries.push({ color, geometryID, transformation });\r\n        }\r\n        this._assets.push(asset);\r\n    }\r\n    getGeometry(webIfc, id) {\r\n        const geometry = webIfc.GetGeometry(0, id);\r\n        const index = webIfc.GetIndexArray(geometry.GetIndexData(), geometry.GetIndexDataSize());\r\n        const vertexData = webIfc.GetVertexArray(geometry.GetVertexData(), geometry.GetVertexDataSize());\r\n        const position = new Float32Array(vertexData.length / 2);\r\n        const normal = new Float32Array(vertexData.length / 2);\r\n        for (let i = 0; i < vertexData.length; i += 6) {\r\n            position[i / 2] = vertexData[i];\r\n            position[i / 2 + 1] = vertexData[i + 1];\r\n            position[i / 2 + 2] = vertexData[i + 2];\r\n            normal[i / 2] = vertexData[i + 3];\r\n            normal[i / 2 + 1] = vertexData[i + 4];\r\n            normal[i / 2 + 2] = vertexData[i + 5];\r\n        }\r\n        // const bbox = makeApproxBoundingBox(position, index);\r\n        const obb = obbFromPoints(position);\r\n        const boundingBox = new Float32Array(obb.transformation.elements);\r\n        // Simple hole test: see if all triangles are facing away the center\r\n        // Using the vertex normal because it's easier\r\n        // Geometries with holes are treated as transparent items\r\n        // in the visibility test for geometry streaming\r\n        // Not perfect, but it will work for most cases and all the times it fails\r\n        // are false positives, so it's always on the safety side\r\n        const centerArray = [obb.center.x, obb.center.y, obb.center.z];\r\n        let hasHoles = false;\r\n        for (let i = 0; i < position.length - 2; i += 3) {\r\n            const x = position[i];\r\n            const y = position[i + 1];\r\n            const z = position[i + 2];\r\n            const nx = normal[i];\r\n            const ny = normal[i + 1];\r\n            const nz = normal[i + 2];\r\n            const pos = [x, y, z];\r\n            const nor = [nx, ny, nz];\r\n            if (isPointInFrontOfPlane(centerArray, pos, nor)) {\r\n                hasHoles = true;\r\n                break;\r\n            }\r\n        }\r\n        this._geometries.set(id, {\r\n            position,\r\n            normal,\r\n            index,\r\n            boundingBox,\r\n            hasHoles,\r\n        });\r\n        geometry.delete();\r\n        this._geometryCount++;\r\n    }\r\n    async streamAssets() {\r\n        await this.onAssetStreamed.trigger(this._assets);\r\n        this._assets = null;\r\n        this._assets = [];\r\n    }\r\n    async streamGeometries() {\r\n        let buffer = this._streamSerializer.export(this._geometries);\r\n        let data = {};\r\n        for (const [id, { boundingBox, hasHoles }] of this._geometries) {\r\n            data[id] = { boundingBox, hasHoles };\r\n        }\r\n        await this.onGeometryStreamed.trigger({ data, buffer });\r\n        // Force memory disposal of all created items\r\n        data = null;\r\n        buffer = null;\r\n        this._geometries.clear();\r\n        this._geometryCount = 0;\r\n    }\r\n}\r\nFragmentIfcStreamConverter.uuid = \"d9999a00-e1f5-4d3f-8cfe-c56e08609764\";\r\nToolComponent.libraryUUIDs.add(FragmentIfcStreamConverter.uuid);\r\n//# 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