From 0be89a4796543a7e7b8c244d3f1aabcf672cf114 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Thu, 5 Mar 2009 10:25:22 +0000
Subject: big addons: * add Homogeneous expression for vector and set of
 vectors (aka matrix)   => the next step will be to overload operator* * add
 homogeneous normalization (again for vector and set of vectors) * add a
 Replicate expression (with uni-directional replication   facilities) => for
 all of them I'll add examples once we agree on the API * fix gcc-4.4 warnings
 * rename reverse.cpp array_reverse.cpp

---
 test/geo_homogeneous.cpp | 79 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 test/geo_homogeneous.cpp

(limited to 'test/geo_homogeneous.cpp')

diff --git a/test/geo_homogeneous.cpp b/test/geo_homogeneous.cpp
new file mode 100644
index 000000000..aea6f746e
--- /dev/null
+++ b/test/geo_homogeneous.cpp
@@ -0,0 +1,79 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2009 Gael Guennebaud <g.gael@free.fr>
+//
+// Eigen is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 3 of the License, or (at your option) any later version.
+//
+// Alternatively, 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 2 of
+// the License, or (at your option) any later version.
+//
+// Eigen 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 Lesser General Public License or the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License and a copy of the GNU General Public License along with
+// Eigen. If not, see <http://www.gnu.org/licenses/>.
+
+#include "main.h"
+#include <Eigen/Geometry>
+
+template<typename Scalar,int Size> void homogeneous(void)
+{
+  /* this test covers the following files:
+     Homogeneous.h
+  */
+
+  typedef Matrix<Scalar,Size,Size> MatrixType;
+  typedef Matrix<Scalar,Size,1> VectorType;
+  
+  typedef Matrix<Scalar,Size+1,Size> HMatrixType;
+  typedef Matrix<Scalar,Size+1,1> HVectorType;
+
+  Scalar largeEps = test_precision<Scalar>();
+  if (ei_is_same_type<Scalar,float>::ret)
+    largeEps = 1e-3f;
+
+  Scalar eps = ei_random<Scalar>() * 1e-2;
+
+  VectorType v0 = VectorType::Random(),
+             v1 = VectorType::Random(),
+             ones = VectorType::Ones();
+
+  HVectorType hv0 = HVectorType::Random(),
+              hv1 = HVectorType::Random();
+  
+  MatrixType m0 = MatrixType::Random(),
+             m1 = MatrixType::Random();
+  
+  HMatrixType hm0 = HMatrixType::Random(),
+              hm1 = HMatrixType::Random();
+
+  hv0 << v0, 1;
+  VERIFY_IS_APPROX(v0.homogeneous(), hv0);
+  VERIFY_IS_APPROX(v0, hv0.hnormalized());
+  
+  hm0 << m0, ones.transpose();
+  VERIFY_IS_APPROX(m0.colwise().homogeneous(), hm0);
+  VERIFY_IS_APPROX(m0, hm0.colwise().hnormalized());
+  hm0.row(Size-1).setRandom();
+  for(int j=0; j<Size; ++j)
+    m0.col(j) = hm0.col(j).start(Size) / hm0(Size,j);
+  VERIFY_IS_APPROX(m0, hm0.colwise().hnormalized());
+}
+
+void test_geo_homogeneous()
+{
+  for(int i = 0; i < g_repeat; i++) {
+    CALL_SUBTEST(( homogeneous<float,1>() ));
+    CALL_SUBTEST(( homogeneous<double,3>() ));
+    CALL_SUBTEST(( homogeneous<double,8>() ));
+  }
+}
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