3D viewer: switch STEP engine to occt-wasm (OCCT V8, module worker); fix mobile rendering (Uint16 chunking, index wrapping, tight near/far); state-coloured box + debug line; app widget parity; licenses/docs

2026-08-28 20:02:11 +02:00
parent 41ec295954
commit 18f8afaf69
10 changed files with 7157 additions and 129 deletions
@@ -1,38 +1,17 @@
-self.onmessage = function (e) {
+import { OcctKernel } from "https://YOUR-INSTANCE.example.com/api/notes/__OCCT_JS_ID__/download";
+let kernel = null;
+let initP = null;
+self.onmessage = async function (e) {
    var d = e.data;
-    if (d.type === 'loadLib') {
-        try { importScripts(d.libUrl); } catch (err) {
-            self.postMessage({ type: 'error', message: 'importScripts: ' + (err && err.message || err) }); return;
-        }
-        if (typeof self.occtimportjs !== 'function') {
-            self.postMessage({ type: 'error', message: 'STEP parser not found.' }); return;
-        }
-        self.occtimportjs({ locateFile: function () { return 'occt.wasm'; }, wasmBinary: d.wasm }).then(function (occt) {
-            self.occt = occt;
-            self.postMessage({ type: 'ready' });
-        }).catch(function (err) {
-            self.postMessage({ type: 'error', message: 'STEP init: ' + (err && err.message || err) });
-        });
-        return;
-    }
-    if (d.type === 'parse' && self.occt) {
-        try {
-            var result = self.occt.ReadStepFile(d.data, d.params);
-            var meshes = [];
-            (result.meshes || []).forEach(function (m) {
-                if (!m.attributes || !m.attributes.position) return;
-                var out = { position: m.attributes.position.array, color: m.color };
-                if (m.attributes.index && m.attributes.index.array) out.index = m.attributes.index.array;
-                meshes.push(out);
-            });
-            var transfer = [];
-            meshes.forEach(function (m) {
-                if (m.position && m.position.buffer) transfer.push(m.position.buffer);
-                if (m.index && m.index.buffer) transfer.push(m.index.buffer);
-            });
-            self.postMessage({ type: 'done', success: !!result.success, meshes: meshes }, transfer);
-        } catch (err) {
-            self.postMessage({ type: 'error', message: 'parse: ' + (err && err.message || err) });
-        }
+    if (d.type !== "parse") return;
+    try {
+        if (!initP) initP = OcctKernel.init({ wasm: d.wasm });
+        kernel = await initP;
+        var shape = kernel.importStep(d.data);
+        var mesh = kernel.tessellate(shape, d.params);
+        kernel.release(shape);
+        self.postMessage({ type: "done", positions: mesh.positions, normals: mesh.normals, indices: mesh.indices }, [mesh.positions.buffer, mesh.normals.buffer, mesh.indices.buffer]);
+    } catch (err) {
+        self.postMessage({ type: "error", message: "parse: " + (err && err.message || err) });
    }
 };