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--------- Co-authored-by: allyoucanmap <stefano.bovio@geosolutionsgroup.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,242 @@ | ||
| /* | ||
| * Copyright 2024, GeoSolutions Sas. | ||
| * All rights reserved. | ||
| * | ||
| * This source code is licensed under the BSD-style license found in the | ||
| * LICENSE file in the root directory of this source tree. | ||
| */ | ||
| import axios from 'axios'; | ||
| import proj4 from 'proj4'; | ||
|
|
||
| /** | ||
| * get ifc model main info such as: longitude, latitude, height and scale | ||
| * and additional info in case of existing a specified crs like: projectedCrs | ||
| * @param {object} ifcData includes 2 items: ifcApi, WebIFC | ||
| * @param {string} modelVersion the version of ifc file [e.g: IFC2x3, IFC4, IFC4x3] | ||
| * @param {number} modelID it is the model if of the ifc model e.g: 0,1,2 | ||
| * @return {object} return originProperties that includes: latitude, longitude, height, scale and "projectedCrs" in case of georeferenced IFC4 model | ||
| * @ | ||
| */ | ||
| // extract model origin point | ||
| function getModelOriginCoords(ifcData, modelVersion, modelID) { | ||
| const { ifcApi, WebIFC } = ifcData; | ||
| let originProperties = {}; | ||
| if (modelVersion?.includes("IFC4")) { | ||
| let projectedCrs; | ||
| let mapConversion; | ||
| let projectedCrsLineId = ifcApi.GetLineIDsWithType(modelID, WebIFC.IFCPROJECTEDCRS); // eslint-disable-line | ||
| let mapConversionLineId = ifcApi.GetLineIDsWithType(modelID, WebIFC.IFCMAPCONVERSION); // eslint-disable-line | ||
| if (projectedCrsLineId.size()) { | ||
| let typeID = projectedCrsLineId.get(0); | ||
| let projectedCrsObj = ifcApi.GetLine(modelID, typeID); // eslint-disable-line | ||
| projectedCrs = projectedCrsObj?.Name?.value; | ||
| } | ||
| if (mapConversionLineId.size()) { | ||
| let typeID = mapConversionLineId.get(0); | ||
| let mapConversionObj = ifcApi.GetLine(modelID, typeID); // eslint-disable-line | ||
| mapConversion = { | ||
| northings: mapConversionObj?.Northings?.value, // x coord | ||
| eastings: mapConversionObj?.Eastings?.value, // y coord | ||
| orthogonalHeight: mapConversionObj?.OrthogonalHeight?.value, // height (z coord) | ||
| xAxisOrdinate: mapConversionObj?.XAxisOrdinate?.value, | ||
| xAxisAbscissa: mapConversionObj?.XAxisAbscissa?.value, | ||
| rotation: Math.atan2(mapConversionObj?.XAxisOrdinate?.value || 0, mapConversionObj?.XAxisAbscissa?.value || 0) * 180.0 / Math. PI, | ||
| scale: mapConversionObj?.Scale?.value | ||
| }; | ||
| if (proj4.defs(projectedCrs)) { // if crs in not defined in MS, model will be locatied at 0,0 | ||
| let wgs84Origin = proj4(proj4.defs(projectedCrs), proj4.defs('EPSG:4326'), [mapConversion.eastings, mapConversion.northings]); | ||
| originProperties = { | ||
| projectedCrs, | ||
| longitude: wgs84Origin[0] || 0, | ||
| latitude: wgs84Origin[1] || 0, | ||
| height: mapConversion.orthogonalHeight || 0, | ||
| scale: mapConversion.scale || 1, | ||
| heading: mapConversion.rotation, | ||
| mapConversion | ||
| }; | ||
| } else { | ||
| originProperties = { | ||
| projectedCrs, | ||
| projectedCrsNotSupported: true, | ||
| mapConversion | ||
| }; | ||
| } | ||
| } | ||
| } | ||
| // todo: maybe in future enhancement, handling georeferenced ifc models with schema less than version 4 like IFC2x3 by getting projection info ref: (https://medium.com/@stijngoedertier/how-to-georeference-a-bim-model-1905d5154cfd) | ||
| return originProperties; | ||
| } | ||
|
|
||
| // extract the tile format from the uri | ||
| function getFormat(uri) { | ||
| const parts = uri.split(/\./g); | ||
| const format = parts[parts.length - 1]; | ||
| return format; | ||
| } | ||
|
|
||
| // extract version, bbox, format and properties from the ifc file | ||
| function extractCapabilities(ifcData, modelID, url) { | ||
| const { ifcApi } = ifcData; | ||
| const version = ifcApi?.GetModelSchema(modelID) !== undefined ? ifcApi.GetModelSchema(modelID)?.includes("IFC4")? "IFC4" : ifcApi.GetModelSchema(modelID) : 'IFC4'; // eslint-disable-line | ||
| const format = getFormat(url || ''); | ||
| return { | ||
| version, | ||
| format, | ||
| properties: {} | ||
| }; | ||
| } | ||
|
|
||
| /** | ||
| * get ifc response and additional parsed information such as: version, bbox, format and properties | ||
| * @param {object} this object includes: data --> ifc raw data, ifcData: is an object includes ifcApi object (from web-ifc) that enable to read ifc content | ||
| * @return {object} return json object includes meshes array [geometry data of ifc model], extent of ifc model, center and size | ||
| * @ | ||
| */ | ||
| export const ifcDataToJSON = ({ data, ifcModule }) => { | ||
| const { ifcApi } = ifcModule; | ||
| const settings = { | ||
| COORDINATE_TO_ORIGIN: false, // this property change the position for IFC4 with projection if true | ||
| USE_FAST_BOOLS: true | ||
| }; | ||
| let rawFileData = new Uint8Array(data); | ||
| const modelID = ifcApi.OpenModel(rawFileData, settings); // eslint-disable-line | ||
| ifcApi.LoadAllGeometry(modelID); // eslint-disable-line | ||
| const coordinationMatrix = ifcApi.GetCoordinationMatrix(modelID); // eslint-disable-line | ||
| if (coordinationMatrix) { | ||
| ifcApi.SetGeometryTransformation(modelID, coordinationMatrix); // eslint-disable-line | ||
| } | ||
| let meshes = []; | ||
| let minx = Infinity; | ||
| let maxx = -Infinity; | ||
| let miny = Infinity; | ||
| let maxy = -Infinity; | ||
| let minz = Infinity; | ||
| let maxz = -Infinity; | ||
| ifcApi.StreamAllMeshes(modelID, (mesh) => { // eslint-disable-line | ||
| const placedGeometries = mesh.geometries; | ||
| let geometry = []; | ||
| for (let i = 0; i < placedGeometries.size(); i++) { | ||
| const placedGeometry = placedGeometries.get(i); | ||
| const ifcGeometry = ifcApi.GetGeometry(modelID, placedGeometry.geometryExpressID); // eslint-disable-line | ||
| const ifcVertices = ifcApi.GetVertexArray(ifcGeometry.GetVertexData(), ifcGeometry.GetVertexDataSize()); // eslint-disable-line | ||
| const ifcIndices = ifcApi.GetIndexArray(ifcGeometry.GetIndexData(), ifcGeometry.GetIndexDataSize()); // eslint-disable-line | ||
| const positions = new Float64Array(ifcVertices.length / 2); | ||
| const normals = new Float32Array(ifcVertices.length / 2); | ||
| for (let j = 0; j < ifcVertices.length; j += 6) { | ||
| const x = ifcVertices[j]; // index = 0 | ||
| const y = ifcVertices[j + 1]; // index = 1 | ||
| const z = ifcVertices[j + 2]; // index = 2 | ||
| if (x < minx) { minx = x; } | ||
| if (y < miny) { miny = y; } | ||
| if (z < minz) { minz = z; } | ||
| if (x > maxx) { maxx = x; } | ||
| if (y > maxy) { maxy = y; } | ||
| if (z > maxz) { maxz = z; } | ||
| positions[j / 2] = x; | ||
| positions[j / 2 + 1] = y; | ||
| positions[j / 2 + 2] = z; | ||
| normals[j / 2] = ifcVertices[j + 3]; // index = 3 | ||
| normals[j / 2 + 1] = ifcVertices[j + 4]; // index = 4 | ||
| normals[j / 2 + 2] = ifcVertices[j + 5]; // index = 5 | ||
| } | ||
| geometry.push({ | ||
| color: placedGeometry.color, | ||
| positions, | ||
| normals, | ||
| indices: Array.from(ifcIndices), | ||
| flatTransformation: placedGeometry.flatTransformation | ||
| }); | ||
| ifcGeometry.delete(); | ||
| } | ||
| const propertyLines = ifcApi.GetLine(modelID, mesh.expressID); // eslint-disable-line | ||
| meshes.push({ | ||
| geometry, | ||
| id: mesh.expressID, | ||
| properties: Object.keys(propertyLines).reduce((acc, key) => { | ||
| acc[key] = propertyLines[key]?.value || propertyLines[key]; | ||
| return acc; | ||
| }, {}) | ||
| }); | ||
| }); | ||
| ifcApi.CloseModel(modelID); // eslint-disable-line | ||
| return { | ||
| meshes, | ||
| extent: [minx, miny, maxx, maxy, minz, maxz], | ||
| center: [minx + (maxx - minx) / 2, miny + (maxy - miny) / 2, minz + (maxz - minz) / 2], | ||
| size: [maxx - minx, maxy - miny, maxz - minz] | ||
| }; | ||
| }; | ||
|
|
||
| export const getWebIFC = () => import('web-ifc') | ||
| .then(WebIFC => { | ||
| const ifcApi = new WebIFC.IfcAPI(); | ||
| ifcApi.SetWasmPath('./web-ifc/'); // eslint-disable-line | ||
| return ifcApi.Init().then(() => { return { ifcApi, WebIFC } }); // eslint-disable-line | ||
| }); | ||
|
|
||
| let ifcCache = {}; | ||
| export const getIFCModel = (url) => { | ||
| const request = ifcCache[url] | ||
| ? () => Promise.resolve(ifcCache[url]) | ||
| : () => axios.get(url, { | ||
| responseType: 'arraybuffer' | ||
| }).then(({ data }) => { | ||
| ifcCache[url] = data; | ||
| return data; | ||
| }); | ||
| return request() | ||
| .then((data) => { | ||
| return getWebIFC() | ||
| .then((ifcModule) => { | ||
| return { data, ifcModule }; | ||
| }); | ||
| }); | ||
| }; | ||
| /** | ||
| * Common requests to IFC | ||
| * @module api.IFC | ||
| */ | ||
|
|
||
| /** | ||
| * get ifc response and additional parsed information such as: version, bbox, format and properties | ||
| * @param {string} url URL of the IFC.ifc file | ||
| * @ | ||
| */ | ||
| export const getCapabilities = (url) => { | ||
| return getIFCModel(url) | ||
| .then(({ ifcModule, data }) => { | ||
| const { ifcApi } = ifcModule; | ||
| const settings = { | ||
| COORDINATE_TO_ORIGIN: false, | ||
| USE_FAST_BOOLS: true | ||
| }; | ||
| const modelID = ifcApi.OpenModel(new Uint8Array(data), settings); // eslint-disable-line | ||
|
|
||
| let capabilities = extractCapabilities(ifcModule, modelID, url); | ||
| // extract model origin info by reading IFCProjectedCRS, IFCMapCONVERSION in case of IFC4 | ||
| const modelOriginProperties = getModelOriginCoords(ifcModule, capabilities.version, modelID); | ||
| capabilities.properties = { | ||
| ...capabilities.properties, | ||
| ...modelOriginProperties | ||
| }; | ||
| ifcApi.CloseModel(modelID); // eslint-disable-line | ||
| let properties = capabilities.properties; | ||
| // todo: getting bbox needs to enhance to get the accurate bbox of the ifc model | ||
| let bbox = { | ||
| bounds: { | ||
| minx: properties.longitude || 0 - 0.001, | ||
| miny: properties.latitude || 0 - 0.001, | ||
| maxx: properties.longitude || 0 + 0.001, | ||
| maxy: properties.latitude || 0 + 0.001 | ||
| }, | ||
| crs: 'EPSG:4326' | ||
| }; | ||
| return { ...capabilities, ...(bbox && { bbox })}; | ||
| }); | ||
| }; | ||
|
|
||
| /** | ||
| * constant of MODEL 'format' | ||
| */ | ||
| export const MODEL = "MODEL"; | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| /* | ||
| * Copyright 2024, GeoSolutions Sas. | ||
| * All rights reserved. | ||
| * | ||
| * This source code is licensed under the BSD-style license found in the | ||
| * LICENSE file in the root directory of this source tree. | ||
| */ | ||
| import { getCapabilities } from '../Model'; | ||
| import expect from 'expect'; | ||
|
|
||
| describe('Test Model API for ifc models', () => { | ||
| it('should extract capabilities from ifc model', (done) => { | ||
| getCapabilities('base/web/client/test-resources/ifcModels/ifcModel.ifc').then(({ bbox, format, version, properties }) => { | ||
| try { | ||
| expect(format).toBeTruthy(); | ||
| expect(format).toBe('ifc'); | ||
| expect(version).toBeTruthy(); | ||
| expect(version).toBe('IFC4'); | ||
| expect(properties).toBeTruthy(); | ||
| expect(properties).toEqual({ | ||
| projectedCrs: 'EPSG:5834', | ||
| projectedCrsNotSupported: true, | ||
| mapConversion: { northings: 5334600, eastings: 4468005, orthogonalHeight: 515, xAxisOrdinate: 0, xAxisAbscissa: 1, rotation: 0, scale: 1 } | ||
| }); | ||
| expect(bbox).toBeTruthy(); | ||
| expect(bbox.crs).toBe('EPSG:4326'); | ||
| expect(Math.round(bbox.bounds.minx)).toBe(0); | ||
| expect(Math.round(bbox.bounds.miny)).toBe(0); | ||
| expect(Math.round(bbox.bounds.maxx)).toBe(0); | ||
| expect(Math.round(bbox.bounds.maxy)).toBe(0); | ||
| } catch (e) { | ||
| done(e); | ||
| } | ||
| done(); | ||
| }); | ||
| }); | ||
| }); |
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