Added Triangle 1 to 4 split

src/Unittests/unittests_trimesh_split.cc

@@ -0,0 +1,117 @@
+
+#include <gtest/gtest.h>
+#include <Unittests/unittests_common.hh>
+#include <iostream>
+
+namespace {
+
+class OpenMeshSplitTriangleMesh : public OpenMeshBase {
+
+    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...
+        }
+
+    // Member already defined in OpenMeshBase
+    //Mesh mesh_;
+};
+
+/*
+ * ====================================================================
+ * Define tests below
+ * ====================================================================
+ */
+
+/* splits a face that has a property in a triangle mesh with split_copy
+ * the property should be copied to the new faces
+ */
+TEST_F(OpenMeshSplitTriangleMesh, Split_Triangle_Mesh_1_4) {
+
+  mesh_.clear();
+
+  mesh_.request_vertex_status();
+  mesh_.request_edge_status();
+  mesh_.request_face_status();
+
+  // Add some vertices
+  Mesh::VertexHandle vhandle[6];
+
+  vhandle[0] = mesh_.add_vertex(Mesh::Point(0, 1, 0));
+  vhandle[1] = mesh_.add_vertex(Mesh::Point(1, 0, 0));
+  vhandle[2] = mesh_.add_vertex(Mesh::Point(2, 1, 0));
+  vhandle[3] = mesh_.add_vertex(Mesh::Point(3, 0, 0));
+  vhandle[4] = mesh_.add_vertex(Mesh::Point(4, 1, 0));
+  vhandle[5] = mesh_.add_vertex(Mesh::Point(2,-1, 0));
+
+  // Add three faces
+  std::vector<Mesh::VertexHandle> face_vhandles;
+
+  face_vhandles.push_back(vhandle[0]);
+  face_vhandles.push_back(vhandle[1]);
+  face_vhandles.push_back(vhandle[2]);
+  mesh_.add_face(face_vhandles);
+
+  face_vhandles.clear();
+
+  face_vhandles.push_back(vhandle[2]);
+  face_vhandles.push_back(vhandle[1]);
+  face_vhandles.push_back(vhandle[3]);
+  Mesh::FaceHandle to_split = mesh_.add_face(face_vhandles);
+
+  face_vhandles.clear();
+
+  face_vhandles.push_back(vhandle[2]);
+  face_vhandles.push_back(vhandle[3]);
+  face_vhandles.push_back(vhandle[4]);
+  mesh_.add_face(face_vhandles);
+
+  face_vhandles.clear();
+
+  face_vhandles.push_back(vhandle[1]);
+  face_vhandles.push_back(vhandle[5]);
+  face_vhandles.push_back(vhandle[3]);
+  mesh_.add_face(face_vhandles);
+
+  /* Test setup:
+   *
+   * edge x => halfedge x/x+1
+   * i.e. edge 0 => halfedge 0/1
+   *
+   * 0 --4--- 2 ------ 4
+   *  \      / \      /
+   *   0  0 2   6  2 /
+   *    \  /  1  \  /
+   *     1 ---8--- 3
+   *      \       /
+   *       \  3  /
+   *        \   /
+   *         \ /
+   *          5
+   */
+
+  EXPECT_EQ(4u, mesh_.n_faces());
+
+  // split face with new vertex
+  mesh_.split(to_split);
+
+  mesh_.garbage_collection();
+
+  EXPECT_EQ(10u, mesh_.n_faces());
+
+
+
+}
+
+}
+
+
+