better paint perspective

packages/datalib/src/PerspectiveConfig.ts

@@ -154,3 +154,13 @@ export interface MultipleDatabaseInfo {
     [database: string]: DatabaseInfo;
   };
 }
+
+export function switchPerspectiveReferenceDirection(ref: PerspectiveReferenceConfig): PerspectiveReferenceConfig {
+  return {
+    designerId: ref.designerId,
+    sourceId: ref.targetId,
+    targetId: ref.sourceId,
+    isAutoGenerated: ref.isAutoGenerated,
+    columns: ref.columns.map(x => ({ source: x.target, target: x.source })),
+  };
+}