1 files changed, 50 insertions, 38 deletions
diff --git a/lib/c++/descriptor.hpp b/lib/c++/descriptor.hpp
index 18ea440..1e3402f 100644
--- a/lib/c++/descriptor.hpp
+++ b/lib/c++/descriptor.hpp
@@ -165,7 +165,7 @@ public:
 	static constexpr typename saw::native_data_type<T>::type cs2 = 1./3.;
 };
 
-/*
+
 template<typename T>
 class df_info<T,sch::Descriptor<3, 27>> {
 public:
@@ -175,35 +175,35 @@ public:
 	static constexpr uint64_t Q = 27u;
 
 	static constexpr std::array<std::array<int32_t, D>, Q> directions = {{
-		{ 0, 0, 0},
-		{-1, 0, 0},
-		{ 1, 0, 0},
+		{ 0, 0, 0},  // 0
+		{-1, 0, 0},  // 1
+		{ 1, 0, 0},  // 2
 		// Expand into 2D
-		{ 0, -1, 0},
-		{-1, -1, 0},
-		{ 1, -1, 0},
-		{ 0, 1, 0},
-		{-1, 1, 0},
-		{ 1, 1, 0},
+		{ 0, -1, 0}, // 3
+		{-1, -1, 0}, // 4
+		{ 1, -1, 0}, // 5
+		{ 0, 1, 0},  // 6
+		{-1, 1, 0},  // 7
+		{ 1, 1, 0},  // 8
 		// Expand into 3D
-		{ 0, 0, -1},
-		{-1, 0, -1},
-		{ 1, 0, -1},
-		{ 0, -1, -1},
-		{-1, -1, -1},
-		{ 1, -1, -1},
-		{ 0, 1, -1},
-		{-1, 1, -1},
-		{ 1, 1, -1},
-		{ 0, 0, 1},
-		{-1, 0, 1},
-		{ 1, 0, 1},
-		{ 0, -1, 1},
-		{-1, -1, 1},
-		{ 1, -1, 1},
-		{ 0, 1, 1},
-		{-1, 1, 1},
-		{ 1, 1, 1}
+		{ 0, 0, -1}, // 9
+		{-1, 0, -1}, // 10
+		{ 1, 0, -1}, // 11
+		{ 0, -1, -1},// 12
+		{-1, -1, -1},// 13
+		{ 1, -1, -1},// 14
+		{ 0, 1, -1}, // 15
+		{-1, 1, -1}, // 16
+		{ 1, 1, -1}, // 17
+		{ 0, 0, 1},  // 18
+		{-1, 0, 1},  // 19
+		{ 1, 0, 1},  // 20
+		{ 0, -1, 1}, // 21
+		{-1, -1, 1}, // 22
+		{ 1, -1, 1}, // 23
+		{ 0, 1, 1},  // 24
+		{-1, 1, 1},  // 25
+		{ 1, 1, 1}   // 26
 	}};
 
 	static constexpr std::array<typename saw::native_data_type<T>::type,Q> weights = {
@@ -215,25 +215,37 @@ public:
 		1./36.,
 		1./36.,
 		1./36.,
+		1./36.,
+		8./27.,
+		1./9.,
+		1./9.,
+		1./9.,
+		1./9.,
+		1./36.,
+		1./36.,
+		1./36.,
+		1./36.,
+		8./27.,
+		1./9.,
+		1./9.,
+		1./9.,
+		1./9.,
+		1./36.,
+		1./36.,
+		1./36.,
 		1./36.
 	};
 
 	static constexpr std::array<uint64_t,Q> opposite_index = {
-		0,
-		2,
-		1,
-		4,
-		3,
-		6,
-		5,
-		8,
-		7
+		0,2,1,
+		6,8,7,3,5,4,
+		18,20,19,24,26,25,21,23,22,9,11,10,15,17,16,12,14,13
 	};
 
 	static constexpr typename saw::native_data_type<T>::type inv_cs2 = 3.0;
 	static constexpr typename saw::native_data_type<T>::type cs2 = 1./3.;
 };
-*/
+
 
 template<typename Schema>
 class cell_schema_builder {