From 5911a4b627e1c6676c5522a8ecd61a2a834f544e Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Wed, 12 Sep 2012 17:57:38 +0200
Subject: More work on transformations

---
 tests/centering_check.c      |  3 +-
 tests/transformation_check.c | 75 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 77 insertions(+), 1 deletion(-)
 create mode 100644 tests/transformation_check.c

(limited to 'tests')

diff --git a/tests/centering_check.c b/tests/centering_check.c
index bfee2806..eca67c85 100644
--- a/tests/centering_check.c
+++ b/tests/centering_check.c
@@ -70,7 +70,8 @@ static int check_centering(double a, double b, double c,
 	UnitCellTransformation *t;
 	int fail = 0;
 
-	STATUS("Checking %s %c (ua %c) %5.2e %5.2e %5.2e %5.2f %5.2f %5.2f\n",
+	STATUS("   --------------->  "
+	       "Checking %s %c (ua %c) %5.2e %5.2e %5.2e %5.2f %5.2f %5.2f\n",
 	       str_lattice(latt), cen, ua, a, b, c, al, be, ga);
 
 	cell = cell_new_from_parameters(a, b, c,
diff --git a/tests/transformation_check.c b/tests/transformation_check.c
new file mode 100644
index 00000000..771e44fe
--- /dev/null
+++ b/tests/transformation_check.c
@@ -0,0 +1,75 @@
+/*
+ * transformation_check.c
+ *
+ * Check that unit cell transformations work
+ *
+ * Copyright © 2012 Thomas White <taw@physics.org>
+ *
+ * This file is part of CrystFEL.
+ *
+ * CrystFEL is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * CrystFEL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with CrystFEL.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+#include <cell.h>
+#include <cell-utils.h>
+
+
+int main(int argc, char *argv[])
+{
+	int fail = 0;
+	UnitCell *cell, *cnew, *cback;
+	UnitCellTransformation *tfn, *inv;
+
+	cell = cell_new_from_parameters(50e-10, 55e-10, 70e-10,
+	                                deg2rad(67.0),
+	                                deg2rad(70.0),
+	                                deg2rad(77.0));
+	if ( cell == NULL ) return 1;
+
+	tfn = tfn_identity();
+	if ( tfn == NULL ) return 1;
+
+	tfn_combine(tfn, tfn_vector(0,1,0),
+	                 tfn_vector(1,0,0),
+	                 tfn_vector(0,0,1));
+
+
+	cell_print(cell);
+	tfn_print(tfn);
+
+	cnew = cell_transform(cell, tfn);
+	cell_print(cnew);
+
+	cback = cell_transform_inverse(cnew, tfn);
+	inv = tfn_inverse(tfn);
+	tfn_print(inv);
+	cell_print(cback);
+
+	cell_get_cartesian(cell, &ax1, &ay1, &az1,
+	                         &by1, &by1, &bz1,
+	                         &cx1, &cy1, &cz1);
+	cell_get_cartesian(cback, &ax, &ay, &az, &by, &by, &bz, &cx, &cy, &cz);
+
+	return fail;
+}
-- 
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