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ModProgMeshT_impl.hh
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43
48 //=============================================================================
49 //
50 // CLASS ModProgMeshT - IMPLEMENTATION
51 //
52 //=============================================================================
53
54 #define OPENMESH_DECIMATER_MODPROGMESH_CC
55
56
57 //== INCLUDES =================================================================
58
59 #include <vector>
60 #include <fstream>
61 // --------------------
62 #include <OpenMesh/Core/Utils/vector_cast.hh>
63 #include <OpenMesh/Core/IO/BinaryHelper.hh>
64 #include <OpenMesh/Core/Utils/Endian.hh>
65 // --------------------
66 #include <OpenMesh/Tools/Decimater/ModProgMeshT.hh>
67
68
69 //== NAMESPACE ===============================================================
70
71 namespace OpenMesh {
72 namespace Decimater {
73
74
75
76 //== IMPLEMENTATION ==========================================================
77
78
79 template <class MeshT>
80 bool
81 ModProgMeshT<MeshT>::
82 write( const std::string& _ofname )
83 {
84 // sort vertices
85 size_t i=0, N=Base::mesh().n_vertices(), n_base_vertices(0), n_base_faces(0);
86 std::vector<typename Mesh::VertexHandle> vhandles(N);
87
88
89 // base vertices
90 typename Mesh::VertexIter
91 v_it=Base::mesh().vertices_begin(),
92 v_end=Base::mesh().vertices_end();
93
94 for (; v_it != v_end; ++v_it)
95 if (!Base::mesh().status(*v_it).deleted())
96 {
97 vhandles[i] = *v_it;
98 Base::mesh().property( idx_, *v_it ) = i;
99 ++i;
100 }
101 n_base_vertices = i;
102
103
104 // deleted vertices
105 typename InfoList::reverse_iterator
106 r_it=pmi_.rbegin(), r_end=pmi_.rend();
107
108 for (; r_it!=r_end; ++r_it)
109 {
110 vhandles[i] = r_it->v0;
111 Base::mesh().property( idx_, r_it->v0) = i;
112 ++i;
113 }
114
115
116 // base faces
117 typename Mesh::ConstFaceIter f_it = Base::mesh().faces_begin(),
118 f_end = Base::mesh().faces_end();
119 for (; f_it != f_end; ++f_it)
120 if (!Base::mesh().status(*f_it).deleted())
121 ++n_base_faces;
122
123 // ---------------------------------------- write progressive mesh
124
125 std::ofstream out( _ofname.c_str(), std::ios::binary );
126
127 if (!out)
128 return false;
129
130 // always use little endian byte ordering
131 bool swap = Endian::local() != Endian::LSB;
132
133 // write header
134 out << "ProgMesh";
135 IO::store( out, static_cast<unsigned int>(n_base_vertices), swap );//store in 32-bit
136 IO::store( out, static_cast<unsigned int>(n_base_faces) , swap );
137 IO::store( out, static_cast<unsigned int>(pmi_.size()) , swap );
138
139 Vec3f p;
140
141 // write base vertices
142 for (i=0; i<n_base_vertices; ++i)
143 {
144 assert (!Base::mesh().status(vhandles[i]).deleted());
145 p = vector_cast< Vec3f >( Base::mesh().point(vhandles[i]) );
146
147 IO::store( out, p, swap );
148 }
149
150
151 // write base faces
152 for (f_it=Base::mesh().faces_begin(); f_it != f_end; ++f_it)
153 {
154 if (!Base::mesh().status(*f_it).deleted())
155 {
156 typename Mesh::ConstFaceVertexIter fv_it(Base::mesh(), *f_it);
157
158 IO::store( out, static_cast<unsigned int>(Base::mesh().property( idx_, *fv_it )) );
159 IO::store( out, static_cast<unsigned int>(Base::mesh().property( idx_, *(++fv_it ))) );
160 IO::store( out, static_cast<unsigned int>(Base::mesh().property( idx_, *(++fv_it ))) );
161 }
162 }
163
164
165 // write detail info
166 for (r_it=pmi_.rbegin(); r_it!=r_end; ++r_it)
167 {
168 // store v0.pos, v1.idx, vl.idx, vr.idx
169 IO::store( out, vector_cast<Vec3f>(Base::mesh().point(r_it->v0)));
170 IO::store(out, static_cast<unsigned int>(Base::mesh().property(idx_, r_it->v1)));
171 IO::store( out,
172 r_it->vl.is_valid() ? static_cast<unsigned int>(Base::mesh().property(idx_, r_it->vl)) : -1);
173 IO::store( out,
174 r_it->vr.is_valid() ? static_cast<unsigned int>(Base::mesh().property(idx_, r_it->vr)) : -1);
175 }
176
177 return true;
178 }
179
180
181
182 //=============================================================================
183 } // END_NS_DECIMATER
184 } // END_NS_OPENMESH
185 //=============================================================================
186
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::PolyMeshT::ConstFaceVertexIter
Kernel::ConstFaceVertexIter ConstFaceVertexIter
Circulator.
Definition: PolyMeshT.hh:177
OpenMesh::VectorT< float, 3 >
OpenMesh::Decimater::ModProgMeshT::write
bool write(const std::string &_ofname)
Definition: ModProgMeshT_impl.hh:82
ModProgMeshT.hh
OpenMesh
Definition: MeshItems.hh:59
OpenMesh::Endian::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