make RenderObjectExporter.getData async

src/extensions/geo-export/glb-exporter.ts

@@ -264,7 +264,7 @@ export class GlbExporter extends MeshExporter<GlbData> {
         }
     }
 
-    getData() {
+    async getData() {
         const binaryBufferLength = this.byteOffset;
 
         const gltf = {
@@ -334,7 +334,7 @@ export class GlbExporter extends MeshExporter<GlbData> {
     }
 
     async getBlob(ctx: RuntimeContext) {
-        return new Blob([this.getData().glb], { type: 'model/gltf-binary' });
+        return new Blob([(await this.getData()).glb], { type: 'model/gltf-binary' });
     }
 
     constructor(private style: Style, boundingBox: Box3D) {

src/extensions/geo-export/mesh-exporter.ts

@@ -278,7 +278,7 @@ export abstract class MeshExporter<D extends RenderObjectExportData> implements
         }
     }
 
-    abstract getData(): D;
+    abstract getData(ctx: RuntimeContext): Promise<D>;
 
     abstract getBlob(ctx: RuntimeContext): Promise<Blob>;
 }

src/extensions/geo-export/obj-exporter.ts

@@ -256,7 +256,7 @@ export class ObjExporter extends MeshExporter<ObjData> {
         }
     }
 
-    getData() {
+    async getData() {
         return {
             obj: StringBuilder.getString(this.obj),
             mtl: StringBuilder.getString(this.mtl)
@@ -264,7 +264,7 @@ export class ObjExporter extends MeshExporter<ObjData> {
     }
 
     async getBlob(ctx: RuntimeContext) {
-        const { obj, mtl } = this.getData();
+        const { obj, mtl } = await this.getData();
         const objData = new Uint8Array(obj.length);
         asciiWrite(objData, obj);
         const mtlData = new Uint8Array(mtl.length);

src/extensions/geo-export/render-object-exporter.ts

@@ -15,6 +15,6 @@ export type RenderObjectExportData = {
 export interface RenderObjectExporter<D extends RenderObjectExportData> {
     readonly fileExtension: string
     add(renderObject: GraphicsRenderObject, webgl: WebGLContext, ctx: RuntimeContext): Promise<void> | undefined
-    getData(): D
+    getData(ctx: RuntimeContext): Promise<D>
     getBlob(ctx: RuntimeContext): Promise<Blob>
 }

src/extensions/geo-export/stl-exporter.ts

@@ -89,7 +89,7 @@ export class StlExporter extends MeshExporter<StlData> {
         }
     }
 
-    getData() {
+    async getData() {
         const stl = new Uint8Array(84 + 50 * this.triangleCount);
 
         asciiWrite(stl, `Exported from Mol* ${PLUGIN_VERSION}`);
@@ -106,7 +106,7 @@ export class StlExporter extends MeshExporter<StlData> {
     }
 
     async getBlob(ctx: RuntimeContext) {
-        return new Blob([this.getData().stl], { type: 'model/stl' });
+        return new Blob([(await this.getData()).stl], { type: 'model/stl' });
     }
 
     constructor(boundingBox: Box3D) {