1 files changed, 25 insertions, 0 deletions
diff --git a/source/blender/gpencil_modifiers/intern/lineart/lineart_cpp_bridge.cc b/source/blender/gpencil_modifiers/intern/lineart/lineart_cpp_bridge.cc
new file mode 100644
index 00000000000..174399618a5
--- /dev/null
+++ b/source/blender/gpencil_modifiers/intern/lineart/lineart_cpp_bridge.cc
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+/** \file
+ * \ingroup modifiers
+ */
+
+#include "BLI_sort.hh"
+#include "BLI_vector.hh"
+#include "MOD_lineart.h"
+#include "lineart_intern.h"
+
+static bool cmp_adjacent_items(const LineartAdjacentEdge &p1, const LineartAdjacentEdge &p2)
+{
+  int a = p1.v1 - p2.v1;
+  int b = p1.v2 - p2.v2;
+  /* parallel_sort() requires cmp() to return true when the first element needs to appear before
+   * the second element in the sorted array, false otherwise (strict weak ordering), see
+   * https://en.cppreference.com/w/cpp/named_req/Compare. */
+  return a < 0 ? true : (a == 0 ? b < 0 : false);
+}
+
+void lineart_sort_adjacent_items(LineartAdjacentEdge *ai, int length)
+{
+  blender::parallel_sort(ai, ai + length - 1, cmp_adjacent_items);
+}