c55b06644d
Function skip_features() Defaults to false git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@86 fdac6126-5c0c-442c-9429-916003d36597
420 lines
10 KiB
C++
420 lines
10 KiB
C++
//=============================================================================
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//
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// OpenMesh
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// Copyright (C) 2003 by Computer Graphics Group, RWTH Aachen
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// www.openmesh.org
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//
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//-----------------------------------------------------------------------------
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//
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// License
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//
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// This library is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as published
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// by the Free Software Foundation, version 2.1.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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//-----------------------------------------------------------------------------
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//
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// $Revision$
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// $Date$
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//
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//=============================================================================
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/** \file SmootherT.cc
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*/
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//=============================================================================
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//
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// CLASS SmootherT - IMPLEMENTATION
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//
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//=============================================================================
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#define OPENMESH_SMOOTHERT_C
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//== INCLUDES =================================================================
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#include <OpenMesh/Core/Utils/vector_cast.hh>
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#include <OpenMesh/Tools/Smoother/SmootherT.hh>
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//== NAMESPACES ===============================================================
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namespace OpenMesh {
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namespace Smoother {
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//== IMPLEMENTATION ==========================================================
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template <class Mesh>
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SmootherT<Mesh>::
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SmootherT(Mesh& _mesh)
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: mesh_(_mesh),
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skip_features_(false)
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{
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// request properties
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mesh_.request_vertex_status();
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mesh_.request_face_normals();
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mesh_.request_vertex_normals();
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// custom properties
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mesh_.add_property(original_positions_);
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mesh_.add_property(original_normals_);
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mesh_.add_property(new_positions_);
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mesh_.add_property(is_active_);
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// default settings
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component_ = Tangential_and_Normal;
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continuity_ = C0;
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tolerance_ = -1.0;
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}
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//-----------------------------------------------------------------------------
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template <class Mesh>
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SmootherT<Mesh>::
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~SmootherT()
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{
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// free properties
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mesh_.release_vertex_status();
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mesh_.release_face_normals();
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mesh_.release_vertex_normals();
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// free custom properties
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mesh_.remove_property(original_positions_);
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mesh_.remove_property(original_normals_);
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mesh_.remove_property(new_positions_);
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mesh_.remove_property(is_active_);
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}
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//-----------------------------------------------------------------------------
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template <class Mesh>
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void
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SmootherT<Mesh>::
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initialize(Component _comp, Continuity _cont)
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{
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typename Mesh::VertexIter v_it, v_end(mesh_.vertices_end());
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// store smoothing settings
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component_ = _comp;
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continuity_ = _cont;
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// update normals
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mesh_.update_face_normals();
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mesh_.update_vertex_normals();
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// store original points & normals
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for (v_it=mesh_.vertices_begin(); v_it!=v_end; ++v_it)
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{
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mesh_.property(original_positions_, v_it) = mesh_.point(v_it);
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mesh_.property(original_normals_, v_it) = mesh_.normal(v_it);
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}
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}
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//-----------------------------------------------------------------------------
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template <class Mesh>
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void
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SmootherT<Mesh>::
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set_active_vertices()
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{
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typename Mesh::VertexIter v_it, v_end(mesh_.vertices_end());
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// is something selected?
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bool nothing_selected(true);
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for (v_it=mesh_.vertices_begin(); v_it!=v_end; ++v_it)
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if (mesh_.status(v_it).selected())
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{ nothing_selected = false; break; }
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// tagg all active vertices
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bool active;
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for (v_it=mesh_.vertices_begin(); v_it!=v_end; ++v_it)
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{
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active = ((nothing_selected || mesh_.status(v_it).selected())
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&& !mesh_.is_boundary(v_it)
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&& !mesh_.status(v_it).locked());
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if ( skip_features_ ) {
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active = active && !mesh_.status(v_it).feature();
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typename Mesh::VertexOHalfedgeIter voh_it(mesh_,v_it);
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for ( ; voh_it ; ++voh_it ) {
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// If the edge is a feature edge, skip the current vertex while smoothing
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if ( mesh_.status(mesh_.edge_handle(voh_it.handle())).feature() )
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active = false;
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typename Mesh::FaceHandle fh1 = mesh_.face_handle(voh_it.handle() );
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typename Mesh::FaceHandle fh2 = mesh_.face_handle(mesh_.opposite_halfedge_handle(voh_it.handle() ) );
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// If one of the faces is a feature, lock current vertex
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if ( fh1.is_valid() && mesh_.status( fh1 ).feature() )
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active = false;
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if ( fh2.is_valid() && mesh_.status( fh2 ).feature() )
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active = false;
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}
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}
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mesh_.property(is_active_, v_it) = active;
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}
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// C1: remove one ring of boundary vertices
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if (continuity_ == C1)
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{
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typename Mesh::VVIter vv_it;
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for (v_it=mesh_.vertices_begin(); v_it!=v_end; ++v_it)
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if (mesh_.is_boundary(v_it))
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for (vv_it=mesh_.vv_iter(v_it); vv_it; ++vv_it)
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mesh_.property(is_active_, vv_it) = false;
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}
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// C2: remove two rings of boundary vertices
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if (continuity_ == C2)
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{
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typename Mesh::VVIter vv_it;
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for (v_it=mesh_.vertices_begin(); v_it!=v_end; ++v_it)
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{
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mesh_.status(v_it).set_tagged(false);
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mesh_.status(v_it).set_tagged2(false);
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}
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for (v_it=mesh_.vertices_begin(); v_it!=v_end; ++v_it)
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if (mesh_.is_boundary(v_it))
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for (vv_it=mesh_.vv_iter(v_it); vv_it; ++vv_it)
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mesh_.status(v_it).set_tagged(true);
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for (v_it=mesh_.vertices_begin(); v_it!=v_end; ++v_it)
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if (mesh_.status(v_it).tagged())
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for (vv_it=mesh_.vv_iter(v_it); vv_it; ++vv_it)
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mesh_.status(v_it).set_tagged2(true);
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for (v_it=mesh_.vertices_begin(); v_it!=v_end; ++v_it)
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{
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if (mesh_.status(v_it).tagged2())
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mesh_.property(is_active_, vv_it) = false;
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mesh_.status(v_it).set_tagged(false);
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mesh_.status(v_it).set_tagged2(false);
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}
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}
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}
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//-----------------------------------------------------------------------------
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template <class Mesh>
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void
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SmootherT<Mesh>::
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set_relative_local_error(Scalar _err)
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{
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if (!mesh_.vertices_empty())
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{
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typename Mesh::VertexIter v_it(mesh_.vertices_begin()),
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v_end(mesh_.vertices_end());
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// compute bounding box
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Point bb_min, bb_max;
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bb_min = bb_max = mesh_.point(v_it);
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for (++v_it; v_it!=v_end; ++v_it)
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{
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bb_min.minimize(mesh_.point(v_it));
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bb_max.minimize(mesh_.point(v_it));
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}
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// abs. error = rel. error * bounding-diagonal
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set_absolute_error(_err * (bb_max-bb_min).norm());
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}
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}
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//-----------------------------------------------------------------------------
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template <class Mesh>
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void
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SmootherT<Mesh>::
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set_absolute_local_error(Scalar _err)
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{
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tolerance_ = _err;
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}
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//-----------------------------------------------------------------------------
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template <class Mesh>
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void
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SmootherT<Mesh>::
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disable_local_error_check()
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{
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tolerance_ = -1.0;
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}
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//-----------------------------------------------------------------------------
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template <class Mesh>
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void
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SmootherT<Mesh>::
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smooth(unsigned int _n)
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{
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// mark active vertices
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set_active_vertices();
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// smooth _n iterations
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while (_n--)
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{
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compute_new_positions();
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if (component_ == Tangential)
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project_to_tangent_plane();
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else if (tolerance_ >= 0.0)
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local_error_check();
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move_points();
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}
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}
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//-----------------------------------------------------------------------------
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template <class Mesh>
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void
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SmootherT<Mesh>::
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compute_new_positions()
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{
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switch (continuity_)
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{
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case C0:
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compute_new_positions_C0();
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break;
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case C1:
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compute_new_positions_C1();
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break;
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case C2:
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break;
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}
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}
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//-----------------------------------------------------------------------------
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template <class Mesh>
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void
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SmootherT<Mesh>::
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project_to_tangent_plane()
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{
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typename Mesh::VertexIter v_it(mesh_.vertices_begin()),
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v_end(mesh_.vertices_end());
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// Normal should be a vector type. In some environment a vector type
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// is different from point type, e.g. OpenSG!
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typename Mesh::Normal translation, normal;
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for (; v_it != v_end; ++v_it)
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{
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if (is_active(v_it))
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{
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translation = new_position(v_it)-orig_position(v_it);
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normal = orig_normal(v_it);
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normal *= dot(translation, normal);
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translation -= normal;
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translation += vector_cast<typename Mesh::Normal>(orig_position(v_it));
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set_new_position(v_it, translation);
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}
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}
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}
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//-----------------------------------------------------------------------------
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template <class Mesh>
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void
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SmootherT<Mesh>::
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local_error_check()
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{
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typename Mesh::VertexIter v_it(mesh_.vertices_begin()),
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v_end(mesh_.vertices_end());
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typename Mesh::Normal translation;
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typename Mesh::Scalar s;
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for (; v_it != v_end; ++v_it)
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{
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if (is_active(v_it))
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{
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translation = new_position(v_it) - orig_position(v_it);
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s = fabs(dot(translation, orig_normal(v_it)));
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if (s > tolerance_)
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{
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translation *= (tolerance_ / s);
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translation += vector_cast<NormalType>(orig_position(v_it));
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set_new_position(v_it, translation);
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}
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}
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}
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}
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//-----------------------------------------------------------------------------
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template <class Mesh>
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void
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SmootherT<Mesh>::
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move_points()
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{
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typename Mesh::VertexIter v_it(mesh_.vertices_begin()),
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v_end(mesh_.vertices_end());
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for (; v_it != v_end; ++v_it)
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if (is_active(v_it))
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mesh_.set_point(v_it, mesh_.property(new_positions_, v_it));
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}
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//=============================================================================
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} // namespace Smoother
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} // namespace OpenMesh
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//=============================================================================
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