BLI: add slice method to index mask and generic span

1 files changed, 10 insertions, 0 deletions

diff --git a/source/blender/functions/FN_generic_span.hh b/source/blender/functions/FN_generic_span.hh
index e2c49697ba9..6f0147b7fb3 100644
--- a/source/blender/functions/FN_generic_span.hh
+++ b/source/blender/functions/FN_generic_span.hh
@@ -93,6 +93,11 @@ class GSpan {
     const int64_t new_size = std::max<int64_t>(0, std::min(size, size_ - start));
     return GSpan(*type_, POINTER_OFFSET(data_, type_->size() * start), new_size);
   }
+
+  GSpan slice(const IndexRange range) const
+  {
+    return this->slice(range.start(), range.size());
+  }
 };
 
 /**
@@ -169,6 +174,11 @@ class GMutableSpan {
     const int64_t new_size = std::max<int64_t>(0, std::min(size, size_ - start));
     return GMutableSpan(*type_, POINTER_OFFSET(data_, type_->size() * start), new_size);
   }
+
+  GMutableSpan slice(IndexRange range) const
+  {
+    return this->slice(range.start(), range.size());
+  }
 };
 
 }  // namespace blender::fn