cd3587d21e
- mod normalFlipping & normalDeviation computes normals, if mesh hasn't normals - add 2 decimater unittest (decimating with normalFlipping and initialize all modules) git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@1049 fdac6126-5c0c-442c-9429-916003d36597
260 lines
9.4 KiB
C++
260 lines
9.4 KiB
C++
/*===========================================================================*\
|
|
* *
|
|
* OpenMesh *
|
|
* Copyright (C) 2001-2014 by Computer Graphics Group, RWTH Aachen *
|
|
* www.openmesh.org *
|
|
* *
|
|
*---------------------------------------------------------------------------*
|
|
* This file is part of OpenMesh. *
|
|
* *
|
|
* OpenMesh 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, either version 3 of *
|
|
* the License, or (at your option) any later version with the *
|
|
* following exceptions: *
|
|
* *
|
|
* If other files instantiate templates or use macros *
|
|
* or inline functions from this file, or you compile this file and *
|
|
* link it with other files to produce an executable, this file does *
|
|
* not by itself cause the resulting executable to be covered by the *
|
|
* GNU Lesser General Public License. This exception does not however *
|
|
* invalidate any other reasons why the executable file might be *
|
|
* covered by the GNU Lesser General Public License. *
|
|
* *
|
|
* OpenMesh 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 LesserGeneral Public *
|
|
* License along with OpenMesh. If not, *
|
|
* see <http://www.gnu.org/licenses/>. *
|
|
* *
|
|
\*===========================================================================*/
|
|
|
|
/*===========================================================================*\
|
|
* *
|
|
* $Revision$ *
|
|
* $Date$ *
|
|
* *
|
|
\*===========================================================================*/
|
|
|
|
/** \file ModNormalDeviationT.hh
|
|
*/
|
|
|
|
//=============================================================================
|
|
//
|
|
// CLASS ModNormalDeviationT
|
|
//
|
|
//=============================================================================
|
|
|
|
|
|
#ifndef OPENMESH_DECIMATER_MODNORMALDEVIATIONT_HH
|
|
#define OPENMESH_DECIMATER_MODNORMALDEVIATIONT_HH
|
|
|
|
|
|
//== INCLUDES =================================================================
|
|
|
|
#include <OpenMesh/Tools/Decimater/ModBaseT.hh>
|
|
#include <OpenMesh/Core/Utils/Property.hh>
|
|
#include <OpenMesh/Core/Geometry/NormalConeT.hh>
|
|
|
|
|
|
//== NAMESPACES ===============================================================
|
|
|
|
namespace OpenMesh {
|
|
namespace Decimater {
|
|
|
|
|
|
//== CLASS DEFINITION =========================================================
|
|
|
|
|
|
/** \brief Use Normal deviation to control decimation
|
|
*
|
|
* The module tracks the normals while decimating
|
|
* a normal cone consisting of all normals of the
|
|
* faces collapsed together is computed and if
|
|
* a collapse would increase the size of
|
|
* the cone to a value greater than the given value
|
|
* the collapse will be illegal.
|
|
*
|
|
* In binary and mode, the collapse is legal if:
|
|
* - The normal deviation after the collapse is lower than the given value
|
|
*
|
|
* In continuous mode the maximal deviation is returned
|
|
*/
|
|
template <class MeshT>
|
|
class ModNormalDeviationT : public ModBaseT< MeshT >
|
|
{
|
|
public:
|
|
|
|
DECIMATING_MODULE( ModNormalDeviationT, MeshT, NormalDeviation );
|
|
|
|
typedef typename Mesh::Scalar Scalar;
|
|
typedef typename Mesh::Point Point;
|
|
typedef typename Mesh::Normal Normal;
|
|
typedef typename Mesh::VertexHandle VertexHandle;
|
|
typedef typename Mesh::FaceHandle FaceHandle;
|
|
typedef typename Mesh::EdgeHandle EdgeHandle;
|
|
typedef NormalConeT<Scalar> NormalCone;
|
|
|
|
|
|
|
|
public:
|
|
|
|
/// Constructor
|
|
ModNormalDeviationT(MeshT& _mesh, float _max_dev = 180.0)
|
|
: Base(_mesh, true), mesh_(Base::mesh())
|
|
{
|
|
set_normal_deviation(_max_dev);
|
|
mesh_.add_property(normal_cones_);
|
|
|
|
const bool mesh_has_normals = _mesh.has_face_normals();
|
|
_mesh.request_face_normals();
|
|
|
|
if (!mesh_has_normals)
|
|
{
|
|
std::cerr << "Mesh has no face normals. Compute them automatically." << std::endl;
|
|
_mesh.update_face_normals();
|
|
}
|
|
}
|
|
|
|
|
|
/// Destructor
|
|
~ModNormalDeviationT() {
|
|
mesh_.remove_property(normal_cones_);
|
|
mesh_.release_face_normals();
|
|
}
|
|
|
|
|
|
/// Get normal deviation ( 0 .. 360 )
|
|
Scalar normal_deviation() const {
|
|
return normal_deviation_ / M_PI * 180.0;
|
|
}
|
|
|
|
/// Set normal deviation ( 0 .. 360 )
|
|
void set_normal_deviation(Scalar _s) {
|
|
normal_deviation_ = _s / 180.0 * M_PI;
|
|
}
|
|
|
|
|
|
/// Allocate and init normal cones
|
|
void initialize() {
|
|
if (!normal_cones_.is_valid())
|
|
mesh_.add_property(normal_cones_);
|
|
|
|
typename Mesh::FaceIter f_it = mesh_.faces_begin(),
|
|
f_end = mesh_.faces_end();
|
|
|
|
for (; f_it != f_end; ++f_it)
|
|
mesh_.property(normal_cones_, *f_it) = NormalCone(mesh_.normal(*f_it));
|
|
}
|
|
|
|
/** \brief Control normals when Decimating
|
|
*
|
|
* Binary and Cont. mode.
|
|
*
|
|
* The module tracks the normals while decimating
|
|
* a normal cone consisting of all normals of the
|
|
* faces collapsed together is computed and if
|
|
* a collapse would increase the size of
|
|
* the cone to a value greater than the given value
|
|
* the collapse will be illegal.
|
|
*
|
|
* @param _ci Collapse info data
|
|
* @return Half of the normal cones size (radius in radians)
|
|
*/
|
|
float collapse_priority(const CollapseInfo& _ci) {
|
|
// simulate collapse
|
|
mesh_.set_point(_ci.v0, _ci.p1);
|
|
|
|
|
|
typename Mesh::Scalar max_angle(0.0);
|
|
typename Mesh::ConstVertexFaceIter vf_it(mesh_, _ci.v0);
|
|
typename Mesh::FaceHandle fh, fhl, fhr;
|
|
|
|
if (_ci.v0vl.is_valid()) fhl = mesh_.face_handle(_ci.v0vl);
|
|
if (_ci.vrv0.is_valid()) fhr = mesh_.face_handle(_ci.vrv0);
|
|
|
|
for (; vf_it.is_valid(); ++vf_it) {
|
|
fh = *vf_it;
|
|
if (fh != _ci.fl && fh != _ci.fr) {
|
|
NormalCone nc = mesh_.property(normal_cones_, fh);
|
|
|
|
nc.merge(NormalCone(mesh_.calc_face_normal(fh)));
|
|
if (fh == fhl) nc.merge(mesh_.property(normal_cones_, _ci.fl));
|
|
if (fh == fhr) nc.merge(mesh_.property(normal_cones_, _ci.fr));
|
|
|
|
if (nc.angle() > max_angle) {
|
|
max_angle = nc.angle();
|
|
if (max_angle > 0.5 * normal_deviation_)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// undo simulation changes
|
|
mesh_.set_point(_ci.v0, _ci.p0);
|
|
|
|
|
|
return (max_angle < 0.5 * normal_deviation_ ? max_angle : float( Base::ILLEGAL_COLLAPSE ));
|
|
}
|
|
|
|
/// set the percentage of normal deviation
|
|
void set_error_tolerance_factor(double _factor) {
|
|
if (_factor >= 0.0 && _factor <= 1.0) {
|
|
// the smaller the factor, the smaller normal_deviation_ gets
|
|
// thus creating a stricter constraint
|
|
// division by error_tolerance_factor_ is for normalization
|
|
Scalar normal_deviation = (normal_deviation_ * 180.0/M_PI) * _factor / this->error_tolerance_factor_;
|
|
set_normal_deviation(normal_deviation);
|
|
this->error_tolerance_factor_ = _factor;
|
|
}
|
|
}
|
|
|
|
|
|
void postprocess_collapse(const CollapseInfo& _ci) {
|
|
// account for changed normals
|
|
typename Mesh::VertexFaceIter vf_it(mesh_, _ci.v1);
|
|
for (; vf_it.is_valid(); ++vf_it)
|
|
mesh_.property(normal_cones_, *vf_it).
|
|
merge(NormalCone(mesh_.normal(*vf_it)));
|
|
|
|
|
|
// normal cones of deleted triangles
|
|
typename Mesh::FaceHandle fh;
|
|
|
|
if (_ci.vlv1.is_valid()) {
|
|
fh = mesh_.face_handle(mesh_.opposite_halfedge_handle(_ci.vlv1));
|
|
if (fh.is_valid())
|
|
mesh_.property(normal_cones_, fh).
|
|
merge(mesh_.property(normal_cones_, _ci.fl));
|
|
}
|
|
|
|
if (_ci.v1vr.is_valid()) {
|
|
fh = mesh_.face_handle(mesh_.opposite_halfedge_handle(_ci.v1vr));
|
|
if (fh.is_valid())
|
|
mesh_.property(normal_cones_, fh).
|
|
merge(mesh_.property(normal_cones_, _ci.fr));
|
|
}
|
|
}
|
|
|
|
|
|
|
|
private:
|
|
|
|
Mesh& mesh_;
|
|
Scalar normal_deviation_;
|
|
OpenMesh::FPropHandleT<NormalCone> normal_cones_;
|
|
};
|
|
|
|
|
|
//=============================================================================
|
|
} // END_NS_DECIMATER
|
|
} // END_NS_OPENMESH
|
|
//=============================================================================
|
|
#endif // OPENMESH_DECIMATER_MODNORMALDEVIATIONT_HH defined
|
|
//=============================================================================
|
|
|