97f515985d
git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@2 fdac6126-5c0c-442c-9429-916003d36597
395 lines
10 KiB
C++
395 lines
10 KiB
C++
//=============================================================================
|
|
//
|
|
// OpenMesh
|
|
// Copyright (C) 2003 by Computer Graphics Group, RWTH Aachen
|
|
// www.openmesh.org
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// License
|
|
//
|
|
// This library 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, version 2.1.
|
|
//
|
|
// This library 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 for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public
|
|
// License along with this library; if not, write to the Free Software
|
|
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// $Revision: 1802 $
|
|
// $Date: 2008-05-19 11:55:07 +0200 (Mo, 19. Mai 2008) $
|
|
//
|
|
//=============================================================================
|
|
|
|
/** \file SmootherT.cc
|
|
|
|
*/
|
|
|
|
//=============================================================================
|
|
//
|
|
// CLASS SmootherT - IMPLEMENTATION
|
|
//
|
|
//=============================================================================
|
|
|
|
#define OPENMESH_SMOOTHERT_C
|
|
|
|
//== INCLUDES =================================================================
|
|
|
|
#include <OpenMesh/Core/Utils/vector_cast.hh>
|
|
#include <OpenMesh/Tools/Smoother/SmootherT.hh>
|
|
|
|
//== NAMESPACES ===============================================================
|
|
|
|
|
|
namespace OpenMesh {
|
|
namespace Smoother {
|
|
|
|
|
|
//== IMPLEMENTATION ==========================================================
|
|
|
|
|
|
template <class Mesh>
|
|
SmootherT<Mesh>::
|
|
SmootherT(Mesh& _mesh)
|
|
: mesh_(_mesh)
|
|
{
|
|
// request properties
|
|
mesh_.request_vertex_status();
|
|
mesh_.request_face_normals();
|
|
mesh_.request_vertex_normals();
|
|
|
|
// custom properties
|
|
mesh_.add_property(original_positions_);
|
|
mesh_.add_property(original_normals_);
|
|
mesh_.add_property(new_positions_);
|
|
mesh_.add_property(is_active_);
|
|
|
|
|
|
// default settings
|
|
component_ = Tangential_and_Normal;
|
|
continuity_ = C0;
|
|
tolerance_ = -1.0;
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
|
|
template <class Mesh>
|
|
SmootherT<Mesh>::
|
|
~SmootherT()
|
|
{
|
|
// free properties
|
|
mesh_.release_vertex_status();
|
|
mesh_.release_face_normals();
|
|
mesh_.release_vertex_normals();
|
|
|
|
// free custom properties
|
|
mesh_.remove_property(original_positions_);
|
|
mesh_.remove_property(original_normals_);
|
|
mesh_.remove_property(new_positions_);
|
|
mesh_.remove_property(is_active_);
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
|
|
template <class Mesh>
|
|
void
|
|
SmootherT<Mesh>::
|
|
initialize(Component _comp, Continuity _cont)
|
|
{
|
|
typename Mesh::VertexIter v_it, v_end(mesh_.vertices_end());
|
|
|
|
|
|
// store smoothing settings
|
|
component_ = _comp;
|
|
continuity_ = _cont;
|
|
|
|
|
|
// update normals
|
|
mesh_.update_face_normals();
|
|
mesh_.update_vertex_normals();
|
|
|
|
|
|
// store original points & normals
|
|
for (v_it=mesh_.vertices_begin(); v_it!=v_end; ++v_it)
|
|
{
|
|
mesh_.property(original_positions_, v_it) = mesh_.point(v_it);
|
|
mesh_.property(original_normals_, v_it) = mesh_.normal(v_it);
|
|
}
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
|
|
template <class Mesh>
|
|
void
|
|
SmootherT<Mesh>::
|
|
set_active_vertices()
|
|
{
|
|
typename Mesh::VertexIter v_it, v_end(mesh_.vertices_end());
|
|
|
|
|
|
// is something selected?
|
|
bool nothing_selected(true);
|
|
for (v_it=mesh_.vertices_begin(); v_it!=v_end; ++v_it)
|
|
if (mesh_.status(v_it).selected())
|
|
{ nothing_selected = false; break; }
|
|
|
|
|
|
// tagg all active vertices
|
|
bool active;
|
|
for (v_it=mesh_.vertices_begin(); v_it!=v_end; ++v_it)
|
|
{
|
|
active = ((nothing_selected || mesh_.status(v_it).selected())
|
|
&& !mesh_.is_boundary(v_it)
|
|
&& !mesh_.status(v_it).locked());
|
|
mesh_.property(is_active_, v_it) = active;
|
|
}
|
|
|
|
|
|
// C1: remove one ring of boundary vertices
|
|
if (continuity_ == C1)
|
|
{
|
|
typename Mesh::VVIter vv_it;
|
|
|
|
for (v_it=mesh_.vertices_begin(); v_it!=v_end; ++v_it)
|
|
if (mesh_.is_boundary(v_it))
|
|
for (vv_it=mesh_.vv_iter(v_it); vv_it; ++vv_it)
|
|
mesh_.property(is_active_, vv_it) = false;
|
|
}
|
|
|
|
|
|
// C2: remove two rings of boundary vertices
|
|
if (continuity_ == C2)
|
|
{
|
|
typename Mesh::VVIter vv_it;
|
|
|
|
for (v_it=mesh_.vertices_begin(); v_it!=v_end; ++v_it)
|
|
{
|
|
mesh_.status(v_it).set_tagged(false);
|
|
mesh_.status(v_it).set_tagged2(false);
|
|
}
|
|
|
|
for (v_it=mesh_.vertices_begin(); v_it!=v_end; ++v_it)
|
|
if (mesh_.is_boundary(v_it))
|
|
for (vv_it=mesh_.vv_iter(v_it); vv_it; ++vv_it)
|
|
mesh_.status(v_it).set_tagged(true);
|
|
|
|
for (v_it=mesh_.vertices_begin(); v_it!=v_end; ++v_it)
|
|
if (mesh_.status(v_it).tagged())
|
|
for (vv_it=mesh_.vv_iter(v_it); vv_it; ++vv_it)
|
|
mesh_.status(v_it).set_tagged2(true);
|
|
|
|
for (v_it=mesh_.vertices_begin(); v_it!=v_end; ++v_it)
|
|
{
|
|
if (mesh_.status(v_it).tagged2())
|
|
mesh_.property(is_active_, vv_it) = false;
|
|
mesh_.status(v_it).set_tagged(false);
|
|
mesh_.status(v_it).set_tagged2(false);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
|
|
template <class Mesh>
|
|
void
|
|
SmootherT<Mesh>::
|
|
set_relative_local_error(Scalar _err)
|
|
{
|
|
if (!mesh_.vertices_empty())
|
|
{
|
|
typename Mesh::VertexIter v_it(mesh_.vertices_begin()),
|
|
v_end(mesh_.vertices_end());
|
|
|
|
|
|
// compute bounding box
|
|
Point bb_min, bb_max;
|
|
bb_min = bb_max = mesh_.point(v_it);
|
|
for (++v_it; v_it!=v_end; ++v_it)
|
|
{
|
|
bb_min.minimize(mesh_.point(v_it));
|
|
bb_max.minimize(mesh_.point(v_it));
|
|
}
|
|
|
|
|
|
// abs. error = rel. error * bounding-diagonal
|
|
set_absolute_error(_err * (bb_max-bb_min).norm());
|
|
}
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
|
|
template <class Mesh>
|
|
void
|
|
SmootherT<Mesh>::
|
|
set_absolute_local_error(Scalar _err)
|
|
{
|
|
tolerance_ = _err;
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
|
|
template <class Mesh>
|
|
void
|
|
SmootherT<Mesh>::
|
|
disable_local_error_check()
|
|
{
|
|
tolerance_ = -1.0;
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
|
|
template <class Mesh>
|
|
void
|
|
SmootherT<Mesh>::
|
|
smooth(unsigned int _n)
|
|
{
|
|
// mark active vertices
|
|
set_active_vertices();
|
|
|
|
// smooth _n iterations
|
|
while (_n--)
|
|
{
|
|
compute_new_positions();
|
|
|
|
if (component_ == Tangential)
|
|
project_to_tangent_plane();
|
|
|
|
else if (tolerance_ >= 0.0)
|
|
local_error_check();
|
|
|
|
move_points();
|
|
}
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
|
|
template <class Mesh>
|
|
void
|
|
SmootherT<Mesh>::
|
|
compute_new_positions()
|
|
{
|
|
switch (continuity_)
|
|
{
|
|
case C0:
|
|
compute_new_positions_C0();
|
|
break;
|
|
|
|
case C1:
|
|
compute_new_positions_C1();
|
|
break;
|
|
|
|
case C2:
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
|
|
template <class Mesh>
|
|
void
|
|
SmootherT<Mesh>::
|
|
project_to_tangent_plane()
|
|
{
|
|
typename Mesh::VertexIter v_it(mesh_.vertices_begin()),
|
|
v_end(mesh_.vertices_end());
|
|
// Normal should be a vector type. In some environment a vector type
|
|
// is different from point type, e.g. OpenSG!
|
|
typename Mesh::Normal translation, normal;
|
|
|
|
|
|
for (; v_it != v_end; ++v_it)
|
|
{
|
|
if (is_active(v_it))
|
|
{
|
|
translation = new_position(v_it)-orig_position(v_it);
|
|
normal = orig_normal(v_it);
|
|
normal *= dot(translation, normal);
|
|
translation -= normal;
|
|
translation += vector_cast<typename Mesh::Normal>(orig_position(v_it));
|
|
set_new_position(v_it, translation);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
|
|
template <class Mesh>
|
|
void
|
|
SmootherT<Mesh>::
|
|
local_error_check()
|
|
{
|
|
typename Mesh::VertexIter v_it(mesh_.vertices_begin()),
|
|
v_end(mesh_.vertices_end());
|
|
|
|
typename Mesh::Normal translation;
|
|
typename Mesh::Scalar s;
|
|
|
|
|
|
for (; v_it != v_end; ++v_it)
|
|
{
|
|
if (is_active(v_it))
|
|
{
|
|
translation = new_position(v_it) - orig_position(v_it);
|
|
|
|
s = fabs(dot(translation, orig_normal(v_it)));
|
|
|
|
if (s > tolerance_)
|
|
{
|
|
translation *= (tolerance_ / s);
|
|
translation += vector_cast<NormalType>(orig_position(v_it));
|
|
set_new_position(v_it, translation);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
|
|
template <class Mesh>
|
|
void
|
|
SmootherT<Mesh>::
|
|
move_points()
|
|
{
|
|
typename Mesh::VertexIter v_it(mesh_.vertices_begin()),
|
|
v_end(mesh_.vertices_end());
|
|
|
|
for (; v_it != v_end; ++v_it)
|
|
if (is_active(v_it))
|
|
mesh_.set_point(v_it, mesh_.property(new_positions_, v_it));
|
|
}
|
|
|
|
|
|
//=============================================================================
|
|
} // namespace Smoother
|
|
} // namespace OpenMesh
|
|
//=============================================================================
|