Merge pull request #132 from xeokit/support-glb-json-independent-spli…

…tting

Support glb json independent splitting

convert2xkt.conf.js

@@ -96,15 +96,32 @@ module.exports = {
             // (i.e. more draw calls). We recommend using the default value unless you get
             // precision problems when rendering (i.e. jittering, or misalignment of objects).
 
-            "minTileSize": 200
+            "minTileSize": 200,
+
+            // When converting .gltf source files that are accompanied by metadata JSON
+            // files, this will cause the metadata JSON files to not be embedded within the XKT output
+            // files, and instead be output separately. When converting split glTF / GLB models
+            // and outputting a manifest of split XKT files, the JSON files will be listed in the
+            // manifest alongside the XKT files.
+
+            "externalMetadata": true
         },
+
         "glb": {
             "reuseGeometries": true,
             "includeTextures": true,
             "includeNormals": false,
             // "includeTypes":[],
             "excludeTypes": [],
-            "minTileSize": 200
+            "minTileSize": 200,
+
+            // When converting GLB source files that are accompanied by metadata JSON
+            // files, this will cause the metadata JSON files to not be embedded within the XKT output
+            // files, and instead be output separately. When converting split glTF / GLB models
+            // and outputting a manifest of split XKT files, the JSON files will be listed in the
+            // manifest alongside the XKT files.
+
+            "externalMetadata": true
         },
 
         //----------------------------------------------------------------------------

convert2xkt.conf.json

@@ -35,14 +35,16 @@
             "includeTextures": true,
             "includeNormals": false,
             "excludeTypes": [],
-            "minTileSize": 200
+            "minTileSize": 200,
+            "externalMetadata": true
         },
         "glb": {
             "reuseGeometries": true,
             "includeTextures": true,
             "includeNormals": false,
             "excludeTypes": [],
-            "minTileSize": 200
+            "minTileSize": 200,
+            "externalMetadata": true
         },
         "json": {
             "center": false,

convert2xkt.js

@@ -8,7 +8,7 @@ const defaultConfigs = require(`./convert2xkt.conf.js`);
 
 const WebIFC = require("web-ifc/web-ifc-api-node.js");
 const path = require("path");
-const { createValidator } = require("@typeonly/validator");
+const {createValidator} = require("@typeonly/validator");
 
 // const validator = createValidator({
 //     bundle: require("./types.to.json")
@@ -44,8 +44,6 @@ const options = program.opts();
 
 let configs = defaultConfigs;
 
-
-
 if (options.source === undefined && options.sourcemanifest === undefined) {
     console.error('[convert2xkt] [ERROR]: Please specify path to source file or manifest.');
     program.help();
@@ -107,11 +105,6 @@ async function main() {
             process.exit(1);
         }
 
-        if (manifest.metadataOutFiles && numInputFiles !== manifest.metadataOutFiles.length) {
-            console.error(`[convert2xkt] [ERROR]: Input manifest invalid - length of gltfOutFiles and metadataOutFiles don't match`);
-            process.exit(1);
-        }
-
         const outputDir = getBasePath(options.output).trim();
         if (outputDir !== "" && !fs.existsSync(outputDir)) {
             fs.mkdirSync(outputDir, {recursive: true});
@@ -132,26 +125,36 @@ async function main() {
             converterApplication: "convert2xkt",
             converterApplicationVersion: `v${npmPackage.version}`,
             conversionDate: formatDate(new Date()),
-            outputDir: outputDir,
+            outputDir,
             xktFiles: []
         };
 
+        const sourceConfigs =  configs.sourceConfigs || {};
+        const formatConfig = sourceConfigs["gltf"] || configs["glb"] || {};
+        const externalMetadata = (!!formatConfig.externalMetadata);
+        if (externalMetadata) {
+            xktManifest.metaModelFiles = [];
+            for (let i = 0, len = manifest.metadataOutFiles.length; i < len; i++) {
+                const metadataSource = manifest.metadataOutFiles[i];
+                xktManifest.metaModelFiles.push(metadataSource.substring(metadataSource.lastIndexOf('/') + 1));
+            }
+        }
+
         let i = 0;
 
         const convertNextFile = () => {
 
             const source = manifest.gltfOutFiles[i];
-            const metaModelSource = manifest.metadataOutFiles ? manifest.metadataOutFiles[i] : null;
+            const metaModelSource = (i < manifest.metadataOutFiles.length) ? manifest.metadataOutFiles[i] : null;
             const outputFileName = getFileNameWithoutExtension(source);
-
             const outputFileNameXKT = `${outputFileName}.xkt`;
 
             convert2xkt({
                 WebIFC,
                 configs,
                 source,
                 format: "gltf",
-                metaModelSource,
+                metaModelSource: (!externalMetadata) ? metaModelSource : null,
                 output: path.join(outputDir, outputFileNameXKT),
                 includeTypes: options.include ? options.include.slice(",") : null,
                 excludeTypes: options.exclude ? options.exclude.slice(",") : null,

dist/convert2xkt.cjs.js

@@ -27457,6 +27457,8 @@ function convert2xkt({
                 reject(err);
                 return;
             }
+        } else {
+            log(`Not embedding metadata in XKT`);
         }
 
         let metaModelJSON;