1 files changed, 47 insertions, 0 deletions
diff --git a/src/copy_mask.cc b/src/copy_mask.cc
new file mode 100644
index 0000000..4dd0538
--- /dev/null
+++ b/src/copy_mask.cc
@@ -0,0 +1,47 @@
+#include <cmath>
+
+#include <cctk.h>
+#include <cctk_Arguments.h>
+#include <cctk_Parameters.h>
+
+#include "copy_mask.hh"
+
+namespace NoExcision {
+
+#ifdef HAVE_CARPET
+  using namespace Carpet;
+#endif
+
+  /**
+   * Modify the mask according to the CarpetReduce mask in order to be able to do the local reductions.
+   */
+
+  extern "C" 
+    void CopyMask (CCTK_ARGUMENTS)
+    {
+      DECLARE_CCTK_ARGUMENTS;
+      DECLARE_CCTK_PARAMETERS;
+
+      CCTK_REAL * const weight =
+        static_cast <CCTK_REAL *>
+        (CCTK_VarDataPtr (cctkGH, 0, "CarpetReduce::weight"));
+
+      if (not weight) {
+        CCTK_WARN (CCTK_WARN_ABORT,
+                   "CarpetReduce is not active, or CarpetReduce::mask does not have storage");
+      }
+
+      for (int k = 0; k < cctk_lsh[2]; ++ k) {
+        for (int j = 0; j < cctk_lsh[1]; ++ j) {
+          for (int i = 0; i < cctk_lsh[0]; ++ i) {
+            int const ind = CCTK_GFINDEX3D (cctkGH, i, j, k);
+
+            red_mask[ind] = weight[ind];
+          }
+        }
+      }
+
+    }
+
+
+} // namespace NoExcision