4 files changed, 49 insertions, 2 deletions
diff --git a/qml/python/game.py b/qml/python/game.py
index de7842a..428fa02 100644
--- a/qml/python/game.py
+++ b/qml/python/game.py
@@ -133,7 +133,7 @@ class Game(object):
         """ Create a normalized board, translated on lower coord.
         """
 
-        for transformation in [Translation(self), Rotation(self), Symmetry(self)]:
+        for transformation in [Translation(self), Rotation(self), Symmetry(self), ToIndex(self)]:
             if not transformation.is_valid():
                 continue
 
diff --git a/qml/python/tests/test2.sgf b/qml/python/tests/test2.sgf
new file mode 100644
index 0000000..292a61f
--- /dev/null
+++ b/qml/python/tests/test2.sgf
@@ -0,0 +1,6 @@
+(;GM[1]FF[3]
+;AW[ok][qk][rl][mm][ln][pn][op][pp][rp][qq][rq][pr][qr][sr]
+AB[qn][qo][ro][np][qp][mq][oq][pq];B[on]
+(;W[po];B[pm];W[no];B[oo])
+(;W[oo];B[no];W[pm];B[po])
+)
diff --git a/qml/python/tests/test_transformations.py b/qml/python/tests/test_transformations.py
index b802b9f..d244e48 100644
--- a/qml/python/tests/test_transformations.py
+++ b/qml/python/tests/test_transformations.py
@@ -3,7 +3,7 @@
 
 import unittest
 
-from python.transformations import Rotation, Translation, Symmetry
+from python.transformations import Rotation, Translation, Symmetry, ToIndex
 
 class FakeBoard():
 
@@ -132,3 +132,15 @@ class TestRotation(unittest.TestCase):
         symmetry.y_flip = False
         self.assertFalse(symmetry.is_valid())
 
+
+class TestToIndex(unittest.TestCase):
+    """ Test the toIndex transformation.
+    """
+
+    def test_apply_points(self):
+        """ Test the points index.
+        """
+        toIndex = ToIndex(FakeBoard(2, 1, 8, 5))
+        self.assertEqual(0, toIndex.apply_points((2, 1)))
+        self.assertEqual(7, toIndex.apply_points((2, 2)))
+        self.assertEqual(8, toIndex.apply_points((3, 2)))
diff --git a/qml/python/transformations.py b/qml/python/transformations.py
index 3bb9383..40aafc0 100644
--- a/qml/python/transformations.py
+++ b/qml/python/transformations.py
@@ -123,3 +123,32 @@ class Symmetry(object):
             "RIGHT": self.board.side["LEFT" if self.x_flip else "RIGHT"],
             "BOTTOM":self.board.side["TOP" if self.y_flip else "BOTTOM"]
         }
+
+class ToIndex(object):
+    """" Transform each point position in point index.
+    """
+
+    def __init__(self, board):
+        self.board = board
+
+    def is_valid(self):
+        """ This transformation is always valid.
+        """
+        return True;
+
+    def apply_points(self, coord, name = None):
+        """
+        """
+        x_size = min(19, self.board.max_x - self.board.min_x + 1)
+        x, y = coord
+        return (x - self.board.min_x) + (y - self.board.min_y) * x_size
+
+    def get_new_size(self):
+        """ The size is not changed.
+        """
+        return self.board.min_x, self.board.min_y, self.board.max_x, self.board.max_y
+
+    def get_new_side(self):
+        """ There is no changes on the sides.
+        """
+        return self.board.side