Advance Blender 5.2 web parity through M12-03D

web/app/src/engine-client/WebEngineClient.ts

@@ -30,6 +30,7 @@ import type {
   PaintStrokeSessionReceiptIR,
 } from "../../../protocol/paint-stroke-session";
 import type { PaintPBVHCapabilityRequest } from "../../../protocol/paint-pbvh-capability";
+import type { LibraryMainAppendReceiptIR, LibraryMainAppendRequestIR } from "../../../protocol/library-main-append";
 
 interface PendingRequest {
   resolve: (result: WebEngineResult) => void;
@@ -122,6 +123,28 @@ export class WebEngineClient {
     };
   }
 
+  async appendLibraryObject(
+    source: ArrayBuffer,
+    request: LibraryMainAppendRequestIR,
+  ): Promise<BlendOpenResult & { delta: SceneDelta; receipt: LibraryMainAppendReceiptIR }> {
+    const result = await this.request({ type: "appendLibraryObject", request, source }, [source]);
+    if (!result.snapshot || !result.delta || !result.libraryAppend) {
+      throw this.report("ASSET_MANIFEST_INVALID", "WebEngine did not return the committed library append", true);
+    }
+    this.geometryBuffers = result.geometryDelta
+      ? applyMeshGeometryDelta(this.geometryBuffers, result.geometryDelta)
+      : result.geometryBuffers ?? this.geometryBuffers;
+    this.nonMeshGeometryBuffers = result.nonMeshGeometryBuffers ?? this.nonMeshGeometryBuffers;
+    return {
+      status: result.status,
+      snapshot: result.snapshot,
+      geometryBuffers: [...this.geometryBuffers],
+      nonMeshGeometryBuffers: [...this.nonMeshGeometryBuffers],
+      delta: result.delta,
+      receipt: result.libraryAppend,
+    };
+  }
+
   async beginPaintStroke(session: PaintStrokeSessionBeginIR): Promise<PaintStrokeSessionReceiptIR> {
     const result = await this.request({ type: "beginPaintStroke", session });
     if (!result.paintStrokeSession) throw this.report("PAINT_SCHEMA_INVALID", "WebEngine did not open the paint pointer session", true);