From 259c7326f78d5495f5dc51c619932599a5279f68 Mon Sep 17 00:00:00 2001
From: Sebastiano Tronto <sebastiano@tronto.net>
Date: Sun, 22 Oct 2023 12:49:20 +0200
Subject: Progess with transformation implementation

---
 utils/TRANSFORMATIONS.txt |  6 +++
 utils/mirror.sh           |  2 +-
 utils/transform_moves.txt | 95 +++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 102 insertions(+), 1 deletion(-)
 create mode 100644 utils/transform_moves.txt

(limited to 'utils')

diff --git a/utils/TRANSFORMATIONS.txt b/utils/TRANSFORMATIONS.txt
index 6ff6946..58446e8 100644
--- a/utils/TRANSFORMATIONS.txt
+++ b/utils/TRANSFORMATIONS.txt
@@ -8,6 +8,12 @@ the rotation that brings the F face on top and the D face on front.
 A composed rotation + mirror is obtained by applying the corresponding
 rotation to the solved cube mirrored along the M plane.
 
+For example, to apply the transformation RBm (mirrored RB) to a cube C:
+	1a. Apply a mirror along the M plane to the solved cube
+	1b. Rotate the mirrored cube with z' y2
+	3.  Apply the cube C to the transformed solved cube
+	4.  Apply the transformations of step 1a and 1b in reverse
+
 The orientation of pieces after a rotation ignores the new position
 of centers.  A rotated cube can technically be inconsistent, because
 the parity of the edge permutation has to be adjusted considering the
diff --git a/utils/mirror.sh b/utils/mirror.sh
index 57b02d1..41a434f 100755
--- a/utils/mirror.sh
+++ b/utils/mirror.sh
@@ -1,3 +1,3 @@
 #!/bin/sh
 
-sed 's/R/l/g ; s/L/R/g ; s/l/L/g'
+tr 'LR' 'RL'
diff --git a/utils/transform_moves.txt b/utils/transform_moves.txt
new file mode 100644
index 0000000..469008b
--- /dev/null
+++ b/utils/transform_moves.txt
@@ -0,0 +1,95 @@
+UFr	U	U
+UFr	R	R
+UFr	F	F
+
+ULr	U	U
+ULr	R	F
+ULr	F	L
+
+UBr	U	U
+UBr	R	L
+UBr	F	B
+
+URr	U	U
+URr	R	B
+URr	F	R
+
+DFr	U	D
+DFr	R	L
+DFr	F	F
+
+DLr	U	D
+DLr	R	B
+DLr	F	L
+
+DBr	U	D
+DBr	R	R
+DBr	F	B
+
+DRr	U	D
+DRr	R	F
+DRr	F	R
+
+RUr	U	R
+RUr	R	F
+RUr	F	U
+
+RFr	U	R
+RFr	R	D
+RFr	F	F
+
+RDr	U	R
+RDr	R	B
+RDr	F	D
+
+RBr	U	R
+RBr	R	U
+RBr	F	B
+
+LUr	U	L
+LUr	R	B
+LUr	F	U
+
+LFr	U	L
+LFr	R	U
+LFr	F	F
+
+LDr	U	L
+LDr	R	F
+LDr	F	D
+
+LBr	U	L
+LBr	R	D
+LBr	F	B
+
+FUr	U	F
+FUr	R	L
+FUr	F	U
+
+FRr	U	F
+FRr	R	U
+FRr	F	R
+
+FDr	U	F	
+FDr	R	R
+FDr	F	D
+
+FLr	U	F
+FLr	R	D
+FLr	F	L
+
+BUr	U	B
+BUr	R	R
+BUr	F	U
+
+BRr	U	B
+BRr	R	D
+BRr	F	R
+
+BDr	U	B
+BDr	R	L
+BDr	F	D
+
+BLr	U	B
+BLr	R	U
+BLr	F	L
-- 
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