Added unittest for vector cross product

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@754 fdac6126-5c0c-442c-9429-916003d36597

src/Unittests/unittests.cc

@@ -17,6 +17,7 @@
 #include "unittests_trimesh_garbage_collection.hh"
 #include "unittests_randomNumberGenerator.hh"
 #include "unittests_split_copy.hh"
+#include "unittests_vector_type.hh"
 
 int main(int _argc, char** _argv) {
 

src/Unittests/unittests_vector_type.hh

@@ -0,0 +1,62 @@
+#ifndef INCLUDE_UNITTESTS_OpenMeshVectorTest_HH
+#define INCLUDE_UNITTESTS_OpenMeshVectorTest_HH
+
+#include <gtest/gtest.h>
+#include <Unittests/unittests_common.hh>
+#include <iostream>
+
+class OpenMeshVectorTest : public testing::Test {
+
+    protected:
+
+        // This function is called before each test is run
+        virtual void SetUp() {
+            
+            // Do some initial stuff with the member data here...
+        }
+
+        // This function is called after all tests are through
+        virtual void TearDown() {
+
+            // Do some final stuff with the member data here...
+        }
+
+};
+
+
+
+/*
+ * ====================================================================
+ * Define tests below
+ * ====================================================================
+ */
+
+/* Compute surface area via cross product
+ */
+TEST_F(OpenMeshVectorTest, ComputeTriangleSurfaceWithCrossProduct) {
+
+
+  //
+  // vec1
+  //  x
+  //  |
+  //  |
+  //  |
+  //  x------>x vec2
+  //
+
+  OpenMesh::Vec3d vec1(0.0,1.0,0.0);
+  OpenMesh::Vec3d vec2(1.0,0.0,0.0);
+
+  double area = 0.5 * cross(vec1,vec2).norm();
+  EXPECT_EQ(0.5f , area ) << "Wrong area in cross product function";
+
+  area = 0.5 * ( vec1 % vec2 ).norm();
+  EXPECT_EQ(0.5f , area ) << "Wrong area in cross product operator";
+
+}
+
+
+
+
+#endif // INCLUDE GUARD