304 lines
11 KiB
C++
304 lines
11 KiB
C++
/* ========================================================================= *
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* *
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* OpenMesh *
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* Copyright (c) 2001-2015, RWTH-Aachen University *
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* Department of Computer Graphics and Multimedia *
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* All rights reserved. *
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* www.openmesh.org *
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* *
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*---------------------------------------------------------------------------*
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* This file is part of OpenMesh. *
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*---------------------------------------------------------------------------*
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* *
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* Redistribution and use in source and binary forms, with or without *
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* modification, are permitted provided that the following conditions *
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* are met: *
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* *
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* 1. Redistributions of source code must retain the above copyright notice, *
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* this list of conditions and the following disclaimer. *
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* *
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* 2. Redistributions in binary form must reproduce the above copyright *
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* notice, this list of conditions and the following disclaimer in the *
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* documentation and/or other materials provided with the distribution. *
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* *
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* 3. Neither the name of the copyright holder nor the names of its *
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* contributors may be used to endorse or promote products derived from *
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* this software without specific prior written permission. *
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* *
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS *
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED *
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER *
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, *
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, *
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR *
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING *
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS *
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
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* *
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* ========================================================================= */
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/** \file DecimaterT_impl.cc
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*/
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//=============================================================================
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//
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// CLASS DecimaterT - IMPLEMENTATION
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//
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//=============================================================================
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#define OPENMESH_BASE_DECIMATER_DECIMATERT_CC
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//== INCLUDES =================================================================
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#include <vector>
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#if defined(OM_CC_MIPS)
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# include <float.h>
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#else
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# include <cfloat>
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#endif
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//== NAMESPACE ===============================================================
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namespace OpenMesh {
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namespace Decimater {
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//== IMPLEMENTATION ==========================================================
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template<class Mesh>
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BaseDecimaterT<Mesh>::BaseDecimaterT(Mesh& _mesh) :
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mesh_(_mesh), cmodule_(nullptr), initialized_(false), observer_(nullptr) {
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// default properties
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mesh_.request_vertex_status();
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mesh_.request_edge_status();
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mesh_.request_face_status();
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}
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//-----------------------------------------------------------------------------
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template<class Mesh>
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BaseDecimaterT<Mesh>::~BaseDecimaterT() {
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// default properties
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mesh_.release_vertex_status();
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mesh_.release_edge_status();
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mesh_.release_face_status();
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// dispose of modules
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{
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set_uninitialized();
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typename ModuleList::iterator m_it, m_end = all_modules_.end();
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for (m_it = all_modules_.begin(); m_it != m_end; ++m_it)
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delete *m_it;
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all_modules_.clear();
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}
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}
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//-----------------------------------------------------------------------------
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template<class Mesh>
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bool BaseDecimaterT<Mesh>::is_collapse_legal(const CollapseInfo& _ci) {
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// std::clog << "McDecimaterT<>::is_collapse_legal()\n";
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// locked ?
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if (mesh_.status(_ci.v0).locked())
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return false;
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// this test checks:
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// is v0v1 deleted?
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// is v0 deleted?
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// is v1 deleted?
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// are both vlv0 and v1vl boundary edges?
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// are both v0vr and vrv1 boundary edges?
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// are vl and vr equal or both invalid?
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// one ring intersection test
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// edge between two boundary vertices should be a boundary edge
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if (!mesh_.is_collapse_ok(_ci.v0v1))
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return false;
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if (_ci.vl.is_valid() && _ci.vr.is_valid()
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&& mesh_.find_halfedge(_ci.vl, _ci.vr).is_valid()
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&& mesh_.valence(_ci.vl) == 3 && mesh_.valence(_ci.vr) == 3) {
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return false;
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}
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//--- feature test ---
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if (mesh_.status(_ci.v0).feature()
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&& !mesh_.status(mesh_.edge_handle(_ci.v0v1)).feature())
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return false;
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//--- test boundary cases ---
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if (mesh_.is_boundary(_ci.v0)) {
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// don't collapse a boundary vertex to an inner one
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if (!mesh_.is_boundary(_ci.v1))
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return false;
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// only one one ring intersection
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if (_ci.vl.is_valid() && _ci.vr.is_valid())
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return false;
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}
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// there have to be at least 2 incident faces at v0
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if (mesh_.cw_rotated_halfedge_handle(
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mesh_.cw_rotated_halfedge_handle(_ci.v0v1)) == _ci.v0v1)
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return false;
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// collapse passed all tests -> ok
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return true;
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}
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//-----------------------------------------------------------------------------
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template<class Mesh>
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float BaseDecimaterT<Mesh>::collapse_priority(const CollapseInfo& _ci) {
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typename ModuleList::iterator m_it, m_end = bmodules_.end();
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for (m_it = bmodules_.begin(); m_it != m_end; ++m_it) {
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if ((*m_it)->collapse_priority(_ci) < 0.0)
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return ModBaseT< Mesh >::ILLEGAL_COLLAPSE;
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}
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return cmodule_->collapse_priority(_ci);
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}
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//-----------------------------------------------------------------------------
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template<class Mesh>
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void BaseDecimaterT<Mesh>::postprocess_collapse(CollapseInfo& _ci) {
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typename ModuleList::iterator m_it, m_end = bmodules_.end();
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for (m_it = bmodules_.begin(); m_it != m_end; ++m_it)
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(*m_it)->postprocess_collapse(_ci);
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cmodule_->postprocess_collapse(_ci);
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}
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//-----------------------------------------------------------------------------
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template<class Mesh>
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void BaseDecimaterT<Mesh>::preprocess_collapse(CollapseInfo& _ci) {
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typename ModuleList::iterator m_it, m_end = bmodules_.end();
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for (m_it = bmodules_.begin(); m_it != m_end; ++m_it)
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(*m_it)->preprocess_collapse(_ci);
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cmodule_->preprocess_collapse(_ci);
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}
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//-----------------------------------------------------------------------------
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template<class Mesh>
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void BaseDecimaterT<Mesh>::set_error_tolerance_factor(double _factor) {
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if (_factor >= 0.0 && _factor <= 1.0) {
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typename ModuleList::iterator m_it, m_end = bmodules_.end();
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for (m_it = bmodules_.begin(); m_it != m_end; ++m_it)
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(*m_it)->set_error_tolerance_factor(_factor);
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cmodule_->set_error_tolerance_factor(_factor);
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}
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}
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//-----------------------------------------------------------------------------
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template<class Mesh>
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void BaseDecimaterT<Mesh>::info(std::ostream& _os) {
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if (initialized_) {
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_os << "initialized : yes" << std::endl;
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_os << "binary modules: " << bmodules_.size() << std::endl;
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for (ModuleListIterator m_it = bmodules_.begin(); m_it != bmodules_.end();
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++m_it) {
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_os << " " << (*m_it)->name() << std::endl;
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}
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_os << "priority module: " << cmodule_->name().c_str() << std::endl;
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} else {
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_os << "initialized : no" << std::endl;
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_os << "available modules: " << all_modules_.size() << std::endl;
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for (ModuleListIterator m_it = all_modules_.begin();
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m_it != all_modules_.end(); ++m_it) {
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_os << " " << (*m_it)->name() << " : ";
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if ((*m_it)->is_binary()) {
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_os << "binary";
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if ((*m_it)->name() == "Quadric") {
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_os << " and priority (special treatment)";
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}
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} else {
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_os << "priority";
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}
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_os << std::endl;
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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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bool BaseDecimaterT<Mesh>::initialize() {
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if (initialized_) {
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return true;
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}
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// FIXME: quadric module shouldn't be treated specially.
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// Q: Why?
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// A: It isn't generic and breaks encapsulation. Also, using string
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// name comparison is not reliable, since you can't guarantee that
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// no one else will name their custom module "Quadric".
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// Q: What should be done instead?
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// A: ModBaseT API should support modules that can be both binary
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// and priority, or BETTER YET, let the DecimaterT API specify the
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// priority module explicitly.
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// find the priority module: either the only non-binary module in the list, or "Quadric"
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Module *quadric = nullptr;
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Module *pmodule = nullptr;
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for (ModuleListIterator m_it = all_modules_.begin(), m_end =
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all_modules_.end(); m_it != m_end; ++m_it) {
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if ((*m_it)->name() == "Quadric")
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quadric = *m_it;
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if (!(*m_it)->is_binary()) {
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if (pmodule) {
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// only one priority module allowed!
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set_uninitialized();
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return false;
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}
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pmodule = *m_it;
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}
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}
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// Quadric is used as default priority module (even if it is set to be binary)
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if (!pmodule && quadric) {
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pmodule = quadric;
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}
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if (!pmodule) {
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// At least one priority module required
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set_uninitialized();
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return false;
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}
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// set pmodule as the current priority module
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cmodule_ = pmodule;
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for (ModuleListIterator m_it = all_modules_.begin(), m_end =
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all_modules_.end(); m_it != m_end; ++m_it) {
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// every module gets initialized
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(*m_it)->initialize();
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if (*m_it != pmodule) {
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// all other modules are binary, and go into bmodules_ list
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bmodules_.push_back(*m_it);
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}
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}
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return initialized_ = true;
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}
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//=============================================================================
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}// END_NS_DECIMATER
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} // END_NS_OPENMESH
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//=============================================================================
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