1 files changed, 6 insertions, 0 deletions
diff --git a/source/blender/blenlib/BLI_scanfill.h b/source/blender/blenlib/BLI_scanfill.h
index 8f281023177..744d30397d4 100644
--- a/source/blender/blenlib/BLI_scanfill.h
+++ b/source/blender/blenlib/BLI_scanfill.h
@@ -123,6 +123,12 @@ void BLI_scanfill_begin_arena(ScanFillContext *sf_ctx, struct MemArena *arena);
 void BLI_scanfill_end_arena(ScanFillContext *sf_ctx, struct MemArena *arena);
 
 /* scanfill_utils.c */
+
+/**
+ * Call before scan-fill to remove self intersections.
+ *
+ * \return false if no changes were made.
+ */
 bool BLI_scanfill_calc_self_isect(ScanFillContext *sf_ctx,
                                   ListBase *fillvertbase,
                                   ListBase *filledgebase);