Commit 6465c08e authored by Jan Möbius's avatar Jan Möbius

Added HalfedgeLoop iterator to iterate over loops of halfedges (faces, hoes). closes #1979

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@988 fdac6126-5c0c-442c-9429-916003d36597
parent ae7ae806
#include <gtest/gtest.h>
#include <Unittests/unittests_common.hh>
#include <iostream>
namespace {
class OpenMeshTrimeshCirculatorHalfedgeLoop : public OpenMeshBase {
protected:
// This function is called before each test is run
virtual void SetUp() {
}
// 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
* ====================================================================
*/
/*
* Small HalfedgeLoop Test without holes in it
*/
TEST_F(OpenMeshTrimeshCirculatorHalfedgeLoop, HalfedgeLoopWithFace) {
mesh_.clear();
// 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_.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
*/
//circle around face 1
Mesh::HalfedgeLoopIter hl_it = mesh_.hl_begin(mesh_.halfedge_handle(3));
Mesh::HalfedgeLoopIter hl_end = mesh_.hl_end(mesh_.halfedge_handle(3));
EXPECT_EQ(3, hl_it->idx() ) << "Index wrong in HalfedgeLoopIter at initialization";
EXPECT_TRUE(hl_it.is_valid()) << "Iterator invalid in HalfedgeLoopIter at initialization";
++hl_it;
EXPECT_EQ(6, hl_it->idx() ) << "Index wrong in HalfedgeLoopIter at step 1";
EXPECT_TRUE(hl_it.is_valid()) << "Iterator invalid in HalfedgeLoopIter at step 1";
++hl_it;
EXPECT_EQ(8, hl_it->idx() ) << "Index wrong in HalfedgeLoopIter at step 2";
EXPECT_TRUE(hl_it.is_valid()) << "Iterator invalid in HalfedgeLoopIter at step 2";
++hl_it;
EXPECT_EQ(3, hl_it->idx() ) << "Index wrong in HalfedgeLoopIter at step 3";
EXPECT_FALSE( hl_it.is_valid() ) << "Iterator invalid in HalfedgeLoopIter at end";
EXPECT_TRUE( hl_it == hl_end ) << "End iterator for HalfedgeLoopIter not matching";
//check const iterators
Mesh::HalfedgeLoopIter chl_it = mesh_.chl_begin(mesh_.halfedge_handle(3));
Mesh::HalfedgeLoopIter chl_end = mesh_.chl_end(mesh_.halfedge_handle(3));
EXPECT_EQ(3, chl_it->idx() ) << "Index wrong in ConstHalfedgeLoopIter at initialization";
EXPECT_TRUE(chl_it.is_valid()) << "Iterator invalid in ConstHalfedgeLoopIter at initialization";
++chl_it;
EXPECT_EQ(6, chl_it->idx() ) << "Index wrong in ConstHalfedgeLoopIter at step 1";
EXPECT_TRUE(chl_it.is_valid()) << "Iterator invalid in ConstHalfedgeLoopIter at step 1";
++chl_it;
EXPECT_EQ(8, chl_it->idx() ) << "Index wrong in ConstHalfedgeLoopIter at step 2";
EXPECT_TRUE(chl_it.is_valid()) << "Iterator invalid in ConstHalfedgeLoopIter at step 2";
++chl_it;
EXPECT_EQ(3, chl_it->idx() ) << "Index wrong in ConstHalfedgeLoopIter at step 3";
EXPECT_FALSE( chl_it.is_valid() ) << "Iterator invalid in ConstHalfedgeLoopIter at end";
EXPECT_TRUE( chl_it == chl_end ) << "End iterator for ConstHalfedgeLoopIter not matching";
}
/*
* Small HalfedgeLoop Test around a boundary
*/
TEST_F(OpenMeshTrimeshCirculatorHalfedgeLoop, HalfedgeLoopWithoutFace) {
mesh_.clear();
// 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[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:
*
* H => hole (no face)
* fx => face #x
* edge 0 => halfedge 0/1
*
* 0 --4--- 2 -10--- 4
* \ / \ /
* 0 f0 2 6 f2 8
* \ / H \ /
* 1 ---16---3
* \ /
* 12 f3 14
* \ /
* \ /
* 5
*/
//circle around the hole
Mesh::HalfedgeLoopIter hl_it = mesh_.hl_begin(mesh_.halfedge_handle(3));
Mesh::HalfedgeLoopIter hl_end = mesh_.hl_end(mesh_.halfedge_handle(3));
EXPECT_EQ(3, hl_it->idx() ) << "Index wrong in HalfedgeLoopIter at initialization";
EXPECT_TRUE(hl_it.is_valid()) << "Iterator invalid in HalfedgeLoopIter at initialization";
++hl_it;
EXPECT_EQ(17, hl_it->idx() ) << "Index wrong in HalfedgeLoopIter at step 1";
EXPECT_TRUE(hl_it.is_valid()) << "Iterator invalid in HalfedgeLoopIter at step 1";
++hl_it;
EXPECT_EQ(7, hl_it->idx() ) << "Index wrong in HalfedgeLoopIter at step 2";
EXPECT_TRUE(hl_it.is_valid()) << "Iterator invalid in HalfedgeLoopIter at step 2";
++hl_it;
EXPECT_EQ(3, hl_it->idx() ) << "Index wrong in HalfedgeLoopIter at step 3";
EXPECT_FALSE( hl_it.is_valid() ) << "Iterator invalid in HalfedgeLoopIter at end";
EXPECT_TRUE( hl_it == hl_end ) << "End iterator for HalfedgeLoopIter not matching";
//check const iterators
Mesh::HalfedgeLoopIter chl_it = mesh_.chl_begin(mesh_.halfedge_handle(3));
Mesh::HalfedgeLoopIter chl_end = mesh_.chl_end(mesh_.halfedge_handle(3));
EXPECT_EQ(3, chl_it->idx() ) << "Index wrong in ConstHalfedgeLoopIter at initialization";
EXPECT_TRUE(chl_it.is_valid()) << "Iterator invalid in ConstHalfedgeLoopIter at initialization";
++chl_it;
EXPECT_EQ(17, chl_it->idx() ) << "Index wrong in ConstHalfedgeLoopIter at step 1";
EXPECT_TRUE(chl_it.is_valid()) << "Iterator invalid in ConstHalfedgeLoopIter at step 1";
++chl_it;
EXPECT_EQ(7, chl_it->idx() ) << "Index wrong in ConstHalfedgeLoopIter at step 2";
EXPECT_TRUE(chl_it.is_valid()) << "Iterator invalid in ConstHalfedgeLoopIter at step 2";
++chl_it;
EXPECT_EQ(3, chl_it->idx() ) << "Index wrong in ConstHalfedgeLoopIter at step 3";
EXPECT_FALSE( chl_it.is_valid() ) << "Iterator invalid in ConstHalfedgeLoopIter at end";
EXPECT_TRUE( chl_it == chl_end ) << "End iterator for ConstHalfedgeLoopIter not matching";
}
}
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