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ModProgMeshT_impl.hh
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//=============================================================================
//
// CLASS ModProgMeshT - IMPLEMENTATION
//
//=============================================================================
#define OPENMESH_DECIMATER_MODPROGMESH_CC
//== INCLUDES =================================================================
#include <vector>
#include <fstream>
// --------------------
#include <OpenMesh/Core/Utils/vector_cast.hh>
#include <OpenMesh/Core/IO/BinaryHelper.hh>
#include <OpenMesh/Core/Utils/Endian.hh>
// --------------------
#include <OpenMesh/Tools/Decimater/ModProgMeshT.hh>
//== NAMESPACE ===============================================================
namespace OpenMesh {
namespace Decimater {
//== IMPLEMENTATION ==========================================================
template <class MeshT>
bool
ModProgMeshT<MeshT>::
write( const std::string& _ofname )
{
// sort vertices
size_t i=0, N=Base::mesh().n_vertices(), n_base_vertices(0), n_base_faces(0);
std::vector<typename Mesh::VertexHandle> vhandles(N);
// base vertices
typename Mesh::VertexIter
v_it=Base::mesh().vertices_begin(),
v_end=Base::mesh().vertices_end();
for (; v_it != v_end; ++v_it)
if (!Base::mesh().status(*v_it).deleted())
{
vhandles[i] = *v_it;
Base::mesh().property( idx_, *v_it ) = i;
++i;
}
n_base_vertices = i;
// deleted vertices
typename InfoList::reverse_iterator
r_it=pmi_.rbegin(), r_end=pmi_.rend();
for (; r_it!=r_end; ++r_it)
{
vhandles[i] = r_it->v0;
Base::mesh().property( idx_, r_it->v0) = i;
++i;
}
// base faces
typename Mesh::ConstFaceIter f_it = Base::mesh().faces_begin(),
f_end = Base::mesh().faces_end();
for (; f_it != f_end; ++f_it)
if (!Base::mesh().status(*f_it).deleted())
++n_base_faces;
// ---------------------------------------- write progressive mesh
std::ofstream out( _ofname.c_str(), std::ios::binary );
if (!out)
return false;
// always use little endian byte ordering
bool swap = Endian::local() != Endian::LSB;
// write header
out << "ProgMesh";
IO::store( out, static_cast<unsigned int>(n_base_vertices), swap );//store in 32-bit
IO::store( out, static_cast<unsigned int>(n_base_faces) , swap );
IO::store( out, static_cast<unsigned int>(pmi_.size()) , swap );
Vec3f p;
// write base vertices
for (i=0; i<n_base_vertices; ++i)
{
assert (!Base::mesh().status(vhandles[i]).deleted());
p = vector_cast< Vec3f >( Base::mesh().point(vhandles[i]) );
IO::store( out, p, swap );
}
// write base faces
for (f_it=Base::mesh().faces_begin(); f_it != f_end; ++f_it)
{
if (!Base::mesh().status(*f_it).deleted())
{
typename Mesh::ConstFaceVertexIter fv_it(Base::mesh(), *f_it);
IO::store( out, static_cast<unsigned int>(Base::mesh().property( idx_, *fv_it )) );
IO::store( out, static_cast<unsigned int>(Base::mesh().property( idx_, *(++fv_it ))) );
IO::store( out, static_cast<unsigned int>(Base::mesh().property( idx_, *(++fv_it ))) );
}
}
// write detail info
for (r_it=pmi_.rbegin(); r_it!=r_end; ++r_it)
{
// store v0.pos, v1.idx, vl.idx, vr.idx
IO::store( out, vector_cast<Vec3f>(Base::mesh().point(r_it->v0)));
IO::store(out, static_cast<unsigned int>(Base::mesh().property(idx_, r_it->v1)));
IO::store( out,
r_it->vl.is_valid() ? static_cast<unsigned int>(Base::mesh().property(idx_, r_it->vl)) : -1);
IO::store( out,
r_it->vr.is_valid() ? static_cast<unsigned int>(Base::mesh().property(idx_, r_it->vr)) : -1);
}
return true;
}
//=============================================================================
} // END_NS_DECIMATER
} // END_NS_OPENMESH
//=============================================================================
ModProgMeshT.hh
OpenMesh
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition MeshItems.hh:59
OpenMesh::vector_cast
void vector_cast(const src_t &_src, dst_t &_dst, GenProg::Int2Type< n >)
Cast vector type to another vector type by copying the vector elements.
Definition vector_cast.hh:81
OpenMesh::Vec3f
VectorT< float, 3 > Vec3f
3-float vector
Definition Vector11T.hh:851
OpenMesh::Decimater
Software related to mesh decimation.
OpenMesh::VectorT::swap
void swap(VectorT< Scalar, DIM > &_v1, VectorT< Scalar, DIM > &_v2) noexcept(noexcept(_v1.swap(_v2)))
non-member swap
Definition Vector11T.hh:741
OpenMesh::PolyMeshT< AttribKernel >::ConstFaceIter
AttribKernel::ConstFaceIter ConstFaceIter
Definition PolyMeshT.hh:151
OpenMesh::PolyMeshT< AttribKernel >::ConstFaceVertexIter
AttribKernel::ConstFaceVertexIter ConstFaceVertexIter
Definition PolyMeshT.hh:177
OpenMesh::PolyMeshT< AttribKernel >::VertexIter
AttribKernel::VertexIter VertexIter
Definition PolyMeshT.hh:143
OpenMesh::Endian::LSB
@ LSB
Little endian (Intel family and clones).
Definition Endian.hh:78
OpenMesh::Endian::local
static Type local()
Return endian type of host system.
Definition Endian.hh:83
OpenMesh::Decimater::ModProgMeshT::write
bool write(const std::string &_ofname)
Write progressive mesh data to a file in proprietary binary format .pm.
Definition ModProgMeshT_impl.hh:82