Initial commit

viewer/manifesto/manifesto.js

@@ -0,0 +1,41 @@
+export class AIM3DManifest {
+  constructor(manifest) {
+    if (typeof manifest === "string" && manifest.trim().startsWith("{")) {
+      this.manifestJson = JSON.parse(manifest);
+      this.manifestUrl = null;
+    } else if (typeof manifest === "object") {
+      this.manifestJson = manifest;
+      this.manifestUrl = null;
+    } else {
+      this.manifestUrl = manifest;
+      this.manifestJson = null;
+    }
+  }
+
+  async loadManifest() {
+    if (this.manifestUrl) {
+      const response = await fetch(this.manifestUrl);
+      this.manifestJson = await response.json();
+    }
+
+    this.manifest = this.manifestJson;
+
+    this.scenes = this.manifest?.items?.filter(
+      item => item.type === "Scene"
+    ) || [];
+  }
+
+  annotationsFromScene(scene) {
+    const result = [];
+
+    for (const page of scene?.items || []) {
+      if (page.type !== "AnnotationPage") continue;
+
+      for (const annotation of page.items || []) {
+        result.push(annotation);
+      }
+    }
+
+    return result;
+  }
+}