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* as THREE from \"three\";\r\nimport * as flatbuffers from \"flatbuffers\";\r\nimport * as FB from \"./flatbuffers/fragments\";\r\nimport { Fragment } from \"./fragment\";\r\nimport { FragmentsGroup } from \"./fragments-group\";\r\nimport { IfcAlignmentData } from \"./alignment\";\r\n/**\r\n * Object to export and import sets of fragments efficiently using the library\r\n * [flatbuffers](https://flatbuffers.dev/).\r\n */\r\nexport class Serializer {\r\n    constructor() {\r\n        this.fragmentIDSeparator = \"|\";\r\n    }\r\n    import(bytes) {\r\n        const buffer = new flatbuffers.ByteBuffer(bytes);\r\n        const fbFragmentsGroup = FB.FragmentsGroup.getRootAsFragmentsGroup(buffer);\r\n        const fragmentsGroup = this.constructFragmentGroup(fbFragmentsGroup);\r\n        const length = fbFragmentsGroup.itemsLength();\r\n        for (let i = 0; i < length; i++) {\r\n            const fbFragment = fbFragmentsGroup.items(i);\r\n            if (!fbFragment)\r\n                continue;\r\n            const geometry = this.constructGeometry(fbFragment);\r\n            const materials = this.constructMaterials(fbFragment);\r\n            const { instances, colors } = this.constructInstances(fbFragment);\r\n            const fragment = new Fragment(geometry, materials, instances.length);\r\n            this.getComposites(fbFragment, fragment);\r\n            this.setInstances(instances, colors, fragment);\r\n            this.setID(fbFragment, fragment);\r\n            fragmentsGroup.items.push(fragment);\r\n            fragmentsGroup.add(fragment.mesh);\r\n        }\r\n        return fragmentsGroup;\r\n    }\r\n    export(group) {\r\n        var _a;\r\n        const builder = new flatbuffers.Builder(1024);\r\n        const items = [];\r\n        const G = FB.FragmentsGroup;\r\n        const F = FB.Fragment;\r\n        const C = FB.Civil;\r\n        let exportedCivil = null;\r\n        if ((_a = group.ifcCivil) === null || _a === void 0 ? void 0 : _a.horizontalAlignments) {\r\n            const A = FB.Alignment;\r\n            const resultH = group.ifcCivil.horizontalAlignments.exportData();\r\n            const posVectorH = A.createPositionVector(builder, resultH.coordinates);\r\n            const curveVectorH = A.createSegmentVector(builder, resultH.curveIndex);\r\n            const alignVectorH = A.createCurveVector(builder, resultH.alignmentIndex);\r\n            A.startAlignment(builder);\r\n            A.addPosition(builder, posVectorH);\r\n            A.addSegment(builder, curveVectorH);\r\n            A.addCurve(builder, alignVectorH);\r\n            const exportedH = FB.Alignment.endAlignment(builder);\r\n            const resultV = group.ifcCivil.verticalAlignments.exportData();\r\n            const posVectorV = A.createPositionVector(builder, resultV.coordinates);\r\n            const curveVectorV = A.createSegmentVector(builder, resultV.curveIndex);\r\n            const alignVectorV = A.createCurveVector(builder, resultV.alignmentIndex);\r\n            A.startAlignment(builder);\r\n            A.addPosition(builder, posVectorV);\r\n            A.addSegment(builder, curveVectorV);\r\n            A.addCurve(builder, alignVectorV);\r\n            const exportedV = FB.Alignment.endAlignment(builder);\r\n            const resultR = group.ifcCivil.realAlignments.exportData();\r\n            const posVectorR = A.createPositionVector(builder, resultR.coordinates);\r\n            const curveVectorR = A.createSegmentVector(builder, resultR.curveIndex);\r\n            const alignVectorR = A.createCurveVector(builder, resultR.alignmentIndex);\r\n            A.startAlignment(builder);\r\n            A.addPosition(builder, posVectorR);\r\n            A.addSegment(builder, curveVectorR);\r\n            A.addCurve(builder, alignVectorR);\r\n            const exportedR = FB.Alignment.endAlignment(builder);\r\n            C.startCivil(builder);\r\n            C.addAlignmentHorizontal(builder, exportedH);\r\n            C.addAlignmentVertical(builder, exportedV);\r\n            C.addAlignment3d(builder, exportedR);\r\n            exportedCivil = FB.Civil.endCivil(builder);\r\n        }\r\n        for (const fragment of group.items) {\r\n            const result = fragment.exportData();\r\n            const posVector = F.createPositionVector(builder, result.position);\r\n            const normalVector = F.createNormalVector(builder, result.normal);\r\n            const blockVector = F.createBlockIdVector(builder, result.blockID);\r\n            const indexVector = F.createIndexVector(builder, result.index);\r\n            const groupsVector = F.createGroupsVector(builder, result.groups);\r\n            const matsVector = F.createMaterialsVector(builder, result.materials);\r\n            const matricesVector = F.createMatricesVector(builder, result.matrices);\r\n            const colorsVector = F.createColorsVector(builder, result.colors);\r\n            const idsStr = builder.createString(result.ids);\r\n            const idStr = builder.createString(result.id);\r\n            const compositeStr = builder.createString(JSON.stringify(fragment.composites));\r\n            F.startFragment(builder);\r\n            F.addPosition(builder, posVector);\r\n            F.addNormal(builder, normalVector);\r\n            F.addBlockId(builder, blockVector);\r\n            F.addIndex(builder, indexVector);\r\n            F.addGroups(builder, groupsVector);\r\n            F.addMaterials(builder, matsVector);\r\n            F.addMatrices(builder, matricesVector);\r\n            F.addColors(builder, colorsVector);\r\n            F.addIds(builder, idsStr);\r\n            F.addId(builder, idStr);\r\n            F.addComposites(builder, compositeStr);\r\n            const exported = FB.Fragment.endFragment(builder);\r\n            items.push(exported);\r\n        }\r\n        const itemsVector = G.createItemsVector(builder, items);\r\n        const matrixVector = G.createCoordinationMatrixVector(builder, group.coordinationMatrix.elements);\r\n        let fragmentKeys = \"\";\r\n        for (const key in group.keyFragments) {\r\n            const fragmentID = group.keyFragments[key];\r\n            if (fragmentKeys.length)\r\n                fragmentKeys += this.fragmentIDSeparator;\r\n            fragmentKeys += fragmentID;\r\n        }\r\n        const fragmentKeysRef = builder.createString(fragmentKeys);\r\n        const keyIndices = [];\r\n        const itemsKeys = [];\r\n        const relsIndices = [];\r\n        const itemsRels = [];\r\n        const ids = [];\r\n        let keysCounter = 0;\r\n        let relsCounter = 0;\r\n        for (const expressID in group.data) {\r\n            keyIndices.push(keysCounter);\r\n            relsIndices.push(relsCounter);\r\n            const [keys, rels] = group.data[expressID];\r\n            const id = parseInt(expressID, 10);\r\n            ids.push(id);\r\n            for (const key of keys) {\r\n                itemsKeys.push(key);\r\n            }\r\n            for (const rel of rels) {\r\n                itemsRels.push(rel);\r\n            }\r\n            keysCounter += keys.length;\r\n            relsCounter += rels.length;\r\n        }\r\n        const groupID = builder.createString(group.uuid);\r\n        const groupName = builder.createString(group.name);\r\n        const ifcName = builder.createString(group.ifcMetadata.name);\r\n        const ifcDescription = builder.createString(group.ifcMetadata.description);\r\n        const ifcSchema = builder.createString(group.ifcMetadata.schema);\r\n        const keysIVector = G.createItemsKeysIndicesVector(builder, keyIndices);\r\n        const keysVector = G.createItemsKeysVector(builder, itemsKeys);\r\n        const relsIVector = G.createItemsRelsIndicesVector(builder, relsIndices);\r\n        const relsVector = G.createItemsRelsVector(builder, itemsRels);\r\n        const idsVector = G.createIdsVector(builder, ids);\r\n        const { min, max } = group.boundingBox;\r\n        const bbox = [min.x, min.y, min.z, max.x, max.y, max.z];\r\n        const bboxVector = G.createBoundingBoxVector(builder, bbox);\r\n        G.startFragmentsGroup(builder);\r\n        if (exportedCivil !== null) {\r\n            G.addCivil(builder, exportedCivil);\r\n        }\r\n        G.addId(builder, groupID);\r\n        G.addName(builder, groupName);\r\n        G.addIfcName(builder, ifcName);\r\n        G.addIfcDescription(builder, ifcDescription);\r\n        G.addIfcSchema(builder, ifcSchema);\r\n        G.addMaxExpressId(builder, group.ifcMetadata.maxExpressID);\r\n        G.addItems(builder, itemsVector);\r\n        G.addFragmentKeys(builder, fragmentKeysRef);\r\n        G.addIds(builder, idsVector);\r\n        G.addItemsKeysIndices(builder, keysIVector);\r\n        G.addItemsKeys(builder, keysVector);\r\n        G.addItemsRelsIndices(builder, relsIVector);\r\n        G.addItemsRels(builder, relsVector);\r\n        G.addCoordinationMatrix(builder, matrixVector);\r\n        G.addBoundingBox(builder, bboxVector);\r\n        const result = FB.FragmentsGroup.endFragmentsGroup(builder);\r\n        builder.finish(result);\r\n        return builder.asUint8Array();\r\n    }\r\n    getComposites(fbFragment, fragment) {\r\n        const composites = fbFragment.composites() || \"{}\";\r\n        fragment.composites = JSON.parse(composites);\r\n    }\r\n    setID(fbFragment, fragment) {\r\n        const id = fbFragment.id();\r\n        if (id) {\r\n            fragment.id = id;\r\n            fragment.mesh.uuid = id;\r\n        }\r\n    }\r\n    setInstances(instances, colors, fragment) {\r\n        for (let i = 0; i < instances.length; i++) {\r\n            fragment.setInstance(i, instances[i]);\r\n            if (colors.length) {\r\n                fragment.mesh.setColorAt(i, colors[i]);\r\n            }\r\n        }\r\n    }\r\n    constructInstances(fragment) {\r\n        const matricesData = fragment.matricesArray();\r\n        const colorData = fragment.colorsArray();\r\n        const colors = [];\r\n        const idsString = fragment.ids();\r\n        const id = fragment.id();\r\n        if (!matricesData || !idsString) {\r\n            throw new Error(`Error: Can't load empty fragment: ${id}`);\r\n        }\r\n        const ids = idsString.split(\"|\");\r\n        const singleInstance = matricesData.length === 16;\r\n        const manyItems = ids.length > 1;\r\n        const isMergedFragment = singleInstance && manyItems;\r\n        if (isMergedFragment) {\r\n            const transform = new THREE.Matrix4().fromArray(matricesData);\r\n            const instances = [{ ids, transform }];\r\n            return { instances, colors };\r\n        }\r\n        // Instanced fragment\r\n        const instances = [];\r\n        for (let i = 0; i < matricesData.length; i += 16) {\r\n            const matrixArray = matricesData.subarray(i, i + 17);\r\n            const transform = new THREE.Matrix4().fromArray(matrixArray);\r\n            const id = ids[i / 16];\r\n            instances.push({ ids: [id], transform });\r\n        }\r\n        if (colorData && colorData.length === instances.length * 3) {\r\n            for (let i = 0; i < colorData.length; i += 3) {\r\n                const [r, g, b] = colorData.subarray(i, i + 4);\r\n                const color = new THREE.Color(r, g, b);\r\n                colors.push(color);\r\n            }\r\n        }\r\n        return { instances, colors };\r\n    }\r\n    constructMaterials(fragment) {\r\n        const materials = fragment.materialsArray();\r\n        const matArray = [];\r\n        if (!materials)\r\n            return matArray;\r\n        for (let i = 0; i < materials.length; i += 5) {\r\n            const opacity = materials[i];\r\n            const transparent = Boolean(materials[i + 1]);\r\n            const red = materials[i + 2];\r\n            const green = materials[i + 3];\r\n            const blue = materials[i + 4];\r\n            const color = new THREE.Color(red, green, blue);\r\n            const material = new THREE.MeshLambertMaterial({\r\n                color,\r\n                opacity,\r\n                transparent,\r\n            });\r\n            matArray.push(material);\r\n        }\r\n        return matArray;\r\n    }\r\n    constructFragmentGroup(group) {\r\n        const fragmentsGroup = new FragmentsGroup();\r\n        const FBcivil = group.civil();\r\n        const horizontalAlignments = new IfcAlignmentData();\r\n        const verticalAlignments = new IfcAlignmentData();\r\n        const realAlignments = new IfcAlignmentData();\r\n        if (FBcivil) {\r\n            const FBalignmentH = FBcivil.alignmentHorizontal();\r\n            this.getAlignmentData(FBalignmentH, horizontalAlignments);\r\n            const FBalignmentV = FBcivil.alignmentVertical();\r\n            this.getAlignmentData(FBalignmentV, verticalAlignments);\r\n            const FBalignment3D = FBcivil.alignment3d();\r\n            this.getAlignmentData(FBalignment3D, realAlignments);\r\n            fragmentsGroup.ifcCivil = {\r\n                horizontalAlignments,\r\n                verticalAlignments,\r\n                realAlignments,\r\n            };\r\n        }\r\n        // fragmentsGroup.ifcCivil?.horizontalAlignments\r\n        fragmentsGroup.uuid = group.id() || fragmentsGroup.uuid;\r\n        fragmentsGroup.name = group.name() || \"\";\r\n        fragmentsGroup.ifcMetadata = {\r\n            name: group.ifcName() || \"\",\r\n            description: group.ifcDescription() || \"\",\r\n            schema: group.ifcSchema() || \"IFC2X3\",\r\n            maxExpressID: group.maxExpressId() || 0,\r\n        };\r\n        const defaultMatrix = new THREE.Matrix4().elements;\r\n        const matrixArray = group.coordinationMatrixArray() || defaultMatrix;\r\n        const ids = group.idsArray() || new Uint32Array();\r\n        const keysIndices = group.itemsKeysIndicesArray() || new Uint32Array();\r\n        const keysArray = group.itemsKeysArray() || new Uint32Array();\r\n        const relsArray = group.itemsRelsArray() || new Uint32Array();\r\n        const relsIndices = group.itemsRelsIndicesArray() || new Uint32Array();\r\n        const keysIdsString = group.fragmentKeys() || \"\";\r\n        const keysIdsArray = keysIdsString.split(this.fragmentIDSeparator);\r\n        this.setGroupData(fragmentsGroup, ids, keysIndices, keysArray, 0);\r\n        this.setGroupData(fragmentsGroup, ids, relsIndices, relsArray, 1);\r\n        const bbox = group.boundingBoxArray() || [0, 0, 0, 0, 0, 0];\r\n        const [minX, minY, minZ, maxX, maxY, maxZ] = bbox;\r\n        fragmentsGroup.boundingBox.min.set(minX, minY, minZ);\r\n        fragmentsGroup.boundingBox.max.set(maxX, maxY, maxZ);\r\n        for (let i = 0; i < keysIdsArray.length; i++) {\r\n            fragmentsGroup.keyFragments[i] = keysIdsArray[i];\r\n        }\r\n        if (matrixArray.length === 16) {\r\n            fragmentsGroup.coordinationMatrix.fromArray(matrixArray);\r\n        }\r\n        return fragmentsGroup;\r\n    }\r\n    getAlignmentData(alignment, result) {\r\n        if (alignment) {\r\n            if (alignment.positionArray) {\r\n                result.coordinates = alignment.positionArray();\r\n                for (let j = 0; j < alignment.curveLength(); j++) {\r\n                    result.alignmentIndex.push(alignment.curve(j));\r\n                }\r\n                for (let j = 0; j < alignment.segmentLength(); j++) {\r\n                    result.curveIndex.push(alignment.segment(j));\r\n                }\r\n            }\r\n        }\r\n    }\r\n    setGroupData(group, ids, indices, array, index) {\r\n        for (let i = 0; i < indices.length; i++) {\r\n            const expressID = ids[i];\r\n            const currentIndex = indices[i];\r\n            const nextIndex = indices[i + 1] || array.length;\r\n            const keys = [];\r\n            for (let j = currentIndex; j < nextIndex; j++) {\r\n                keys.push(array[j]);\r\n            }\r\n            if (!group.data[expressID]) {\r\n                group.data[expressID] = [[], []];\r\n            }\r\n            group.data[expressID][index] = keys;\r\n        }\r\n    }\r\n    constructGeometry(fragment) {\r\n        const position = fragment.positionArray();\r\n        const normal = fragment.normalArray();\r\n        const blockID = fragment.blockIdArray();\r\n        const index = fragment.indexArray();\r\n        const groups = fragment.groupsArray();\r\n        if (!index)\r\n            throw new Error(\"Index not found!\");\r\n        const geometry = new THREE.BufferGeometry();\r\n        geometry.setIndex(Array.from(index));\r\n        this.loadAttribute(geometry, \"position\", position, 3);\r\n        this.loadAttribute(geometry, \"normal\", normal, 3);\r\n        this.loadAttribute(geometry, \"blockID\", blockID, 1);\r\n        this.loadGeometryGroups(groups, geometry);\r\n        return geometry;\r\n    }\r\n    loadGeometryGroups(groups, geometry) {\r\n        if (!groups)\r\n            return;\r\n        for (let i = 0; i < groups.length; i += 3) {\r\n            const start = groups[i];\r\n            const count = groups[i + 1];\r\n            const materialIndex = groups[i + 2];\r\n            geometry.addGroup(start, count, materialIndex);\r\n        }\r\n    }\r\n    loadAttribute(geometry, name, data, size) {\r\n        if (!data)\r\n            return;\r\n        geometry.setAttribute(name, new THREE.BufferAttribute(data, size));\r\n    }\r\n}\r\n//# 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