Initial commit

viewer/IIIF/iiif.js

@@ -0,0 +1,40 @@
+//import manifest from "@iiif/3d-manifesto-dev/dist-esmodule/";
+import * as manifesto from "@iiif/3d-manifesto-dev/dist-esmodule";
+
+export class IIIFManifest {
+  constructor(manifest) {
+    // Is manifest JSON or URL?
+    if (isJsonString(manifest)) {
+      this.manifestJson = manifest;
+      this.manifestUrl = null;
+      this.manifest = manifesto.parseManifest(manifest);
+    } else {
+      this.manifestJson = null;
+      this.manifestUrl = manifest;
+    }
+  }
+
+  async loadManifest() {
+    if (this.manifestUrl)
+      this.manifestJson = await manifesto.loadManifest(this.manifestUrl);
+
+    if (this.manifestJson)
+      this.manifest = await manifesto.parseManifest(this.manifestJson);
+
+    if (this.manifest)
+      this.scenes = this.manifest?.getSequences()[0]?.getScenes() || [];
+  }
+
+  annotationsFromScene(scene) {
+    return scene?.getContent() || [];
+  }
+}
+
+function isJsonString(str) {
+  try {
+    JSON.parse(str);
+  } catch (e) {
+    return false;
+  }
+  return true;
+}