ImporterT.hh
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//=============================================================================
//
// Implements an importer module for arbitrary OpenMesh meshes
//
//=============================================================================
#ifndef __IMPORTERT_HH__
#define __IMPORTERT_HH__
//=== INCLUDES ================================================================
#include <OpenMesh/Core/IO/importer/BaseImporter.hh>
#include <OpenMesh/Core/Utils/vector_cast.hh>
#include <OpenMesh/Core/Utils/color_cast.hh>
#include <OpenMesh/Core/Mesh/Attributes.hh>
#include <OpenMesh/Core/System/omstream.hh>
//== NAMESPACES ===============================================================
namespace OpenMesh {
namespace IO {
//=== IMPLEMENTATION ==========================================================
template <class Mesh>
class ImporterT : public BaseImporter
{
public:
typedef typename Mesh::Point Point;
typedef typename Mesh::Normal Normal;
typedef typename Mesh::Color Color;
typedef typename Mesh::TexCoord2D TexCoord2D;
typedef typename Mesh::TexCoord3D TexCoord3D;
typedef std::vector<VertexHandle> VHandles;
ImporterT(Mesh& _mesh) : mesh_(_mesh), halfedgeNormals_() {}
virtual VertexHandle add_vertex(const Vec3f& _point)
{
return mesh_.add_vertex(vector_cast<Point>(_point));
}
virtual VertexHandle add_vertex()
{
return mesh_.new_vertex();
}
virtual FaceHandle add_face(const VHandles& _indices)
{
FaceHandle fh;
if (_indices.size() > 2)
{
VHandles::const_iterator it, it2, end(_indices.end());
// test for valid vertex indices
for (it=_indices.begin(); it!=end; ++it)
if (! mesh_.is_valid_handle(*it))
{
omerr() << "ImporterT: Face contains invalid vertex index\n";
return fh;
}
// don't allow double vertices
for (it=_indices.begin(); it!=end; ++it)
for (it2=it+1; it2!=end; ++it2)
if (*it == *it2)
{
omerr() << "ImporterT: Face has equal vertices\n";
return fh;
}
// try to add face
fh = mesh_.add_face(_indices);
// separate non-manifold faces and mark them
if (!fh.is_valid())
{
VHandles vhandles(_indices.size());
// double vertices
for (unsigned int j=0; j<_indices.size(); ++j)
{
// DO STORE p, reference may not work since vertex array
// may be relocated after adding a new vertex !
Point p = mesh_.point(_indices[j]);
vhandles[j] = mesh_.add_vertex(p);
// Mark vertices of failed face as non-manifold
if (mesh_.has_vertex_status()) {
mesh_.status(vhandles[j]).set_fixed_nonmanifold(true);
}
}
// add face
fh = mesh_.add_face(vhandles);
// Mark failed face as non-manifold
if (mesh_.has_face_status())
mesh_.status(fh).set_fixed_nonmanifold(true);
// Mark edges of failed face as non-two-manifold
if (mesh_.has_edge_status()) {
typename Mesh::FaceEdgeIter fe_it = mesh_.fe_iter(fh);
for(; fe_it.is_valid(); ++fe_it) {
mesh_.status(*fe_it).set_fixed_nonmanifold(true);
}
}
}
//write the half edge normals
if (mesh_.has_halfedge_normals())
{
//iterate over all incoming haldedges of the added face
for (typename Mesh::FaceHalfedgeIter fh_iter = mesh_.fh_begin(fh);
fh_iter != mesh_.fh_end(fh); ++fh_iter)
{
//and write the normals to it
typename Mesh::HalfedgeHandle heh = *fh_iter;
typename Mesh::VertexHandle vh = mesh_.to_vertex_handle(heh);
typename std::map<VertexHandle,Normal>::iterator it_heNs = halfedgeNormals_.find(vh);
if (it_heNs != halfedgeNormals_.end())
mesh_.set_normal(heh,it_heNs->second);
}
halfedgeNormals_.clear();
}
}
return fh;
}
// vertex attributes
virtual void set_point(VertexHandle _vh, const Vec3f& _point)
{
mesh_.set_point(_vh,vector_cast<Point>(_point));
}
virtual void set_normal(VertexHandle _vh, const Vec3f& _normal)
{
if (mesh_.has_vertex_normals())
mesh_.set_normal(_vh, vector_cast<Normal>(_normal));
//saves normals for half edges.
//they will be written, when the face is added
if (mesh_.has_halfedge_normals())
halfedgeNormals_[_vh] = vector_cast<Normal>(_normal);
}
virtual void set_color(VertexHandle _vh, const Vec4uc& _color)
{
if (mesh_.has_vertex_colors())
mesh_.set_color(_vh, color_cast<Color>(_color));
}
virtual void set_color(VertexHandle _vh, const Vec3uc& _color)
{
if (mesh_.has_vertex_colors())
mesh_.set_color(_vh, color_cast<Color>(_color));
}
virtual void set_color(VertexHandle _vh, const Vec4f& _color)
{
if (mesh_.has_vertex_colors())
mesh_.set_color(_vh, color_cast<Color>(_color));
}
virtual void set_color(VertexHandle _vh, const Vec3f& _color)
{
if (mesh_.has_vertex_colors())
mesh_.set_color(_vh, color_cast<Color>(_color));
}
virtual void set_texcoord(VertexHandle _vh, const Vec2f& _texcoord)
{
if (mesh_.has_vertex_texcoords2D())
mesh_.set_texcoord2D(_vh, vector_cast<TexCoord2D>(_texcoord));
}
virtual void set_texcoord(HalfedgeHandle _heh, const Vec2f& _texcoord)
{
if (mesh_.has_halfedge_texcoords2D())
mesh_.set_texcoord2D(_heh, vector_cast<TexCoord2D>(_texcoord));
}
virtual void set_texcoord(VertexHandle _vh, const Vec3f& _texcoord)
{
if (mesh_.has_vertex_texcoords3D())
mesh_.set_texcoord3D(_vh, vector_cast<TexCoord3D>(_texcoord));
}
virtual void set_texcoord(HalfedgeHandle _heh, const Vec3f& _texcoord)
{
if (mesh_.has_halfedge_texcoords3D())
mesh_.set_texcoord3D(_heh, vector_cast<TexCoord3D>(_texcoord));
}
// edge attributes
virtual void set_color(EdgeHandle _eh, const Vec4uc& _color)
{
if (mesh_.has_edge_colors())
mesh_.set_color(_eh, color_cast<Color>(_color));
}
virtual void set_color(EdgeHandle _eh, const Vec3uc& _color)
{
if (mesh_.has_edge_colors())
mesh_.set_color(_eh, color_cast<Color>(_color));
}
virtual void set_color(EdgeHandle _eh, const Vec4f& _color)
{
if (mesh_.has_edge_colors())
mesh_.set_color(_eh, color_cast<Color>(_color));
}
virtual void set_color(EdgeHandle _eh, const Vec3f& _color)
{
if (mesh_.has_edge_colors())
mesh_.set_color(_eh, color_cast<Color>(_color));
}
// face attributes
virtual void set_normal(FaceHandle _fh, const Vec3f& _normal)
{
if (mesh_.has_face_normals())
mesh_.set_normal(_fh, vector_cast<Normal>(_normal));
}
virtual void set_color(FaceHandle _fh, const Vec3uc& _color)
{
if (mesh_.has_face_colors())
mesh_.set_color(_fh, color_cast<Color>(_color));
}
virtual void set_color(FaceHandle _fh, const Vec4uc& _color)
{
if (mesh_.has_face_colors())
mesh_.set_color(_fh, color_cast<Color>(_color));
}
virtual void set_color(FaceHandle _fh, const Vec3f& _color)
{
if (mesh_.has_face_colors())
mesh_.set_color(_fh, color_cast<Color>(_color));
}
virtual void set_color(FaceHandle _fh, const Vec4f& _color)
{
if (mesh_.has_face_colors())
mesh_.set_color(_fh, color_cast<Color>(_color));
}
virtual void add_face_texcoords( FaceHandle _fh, VertexHandle _vh, const std::vector<Vec2f>& _face_texcoords)
{
// get first halfedge handle
HalfedgeHandle cur_heh = mesh_.halfedge_handle(_fh);
HalfedgeHandle end_heh = mesh_.prev_halfedge_handle(cur_heh);
// find start heh
while( mesh_.to_vertex_handle(cur_heh) != _vh && cur_heh != end_heh )
cur_heh = mesh_.next_halfedge_handle( cur_heh);
for(unsigned int i=0; i<_face_texcoords.size(); ++i)
{
set_texcoord( cur_heh, _face_texcoords[i]);
cur_heh = mesh_.next_halfedge_handle( cur_heh);
}
}
virtual void add_face_texcoords( FaceHandle _fh, VertexHandle _vh, const std::vector<Vec3f>& _face_texcoords)
{
// get first halfedge handle
HalfedgeHandle cur_heh = mesh_.halfedge_handle(_fh);
HalfedgeHandle end_heh = mesh_.prev_halfedge_handle(cur_heh);
// find start heh
while( mesh_.to_vertex_handle(cur_heh) != _vh && cur_heh != end_heh )
cur_heh = mesh_.next_halfedge_handle( cur_heh);
for(unsigned int i=0; i<_face_texcoords.size(); ++i)
{
set_texcoord( cur_heh, _face_texcoords[i]);
cur_heh = mesh_.next_halfedge_handle( cur_heh);
}
}
virtual void set_face_texindex( FaceHandle _fh, int _texId ) {
if ( mesh_.has_face_texture_index() ) {
mesh_.set_texture_index(_fh , _texId);
}
}
virtual void add_texture_information( int _id , std::string _name ) {
OpenMesh::MPropHandleT< std::map< int, std::string > > property;
if ( !mesh_.get_property_handle(property,"TextureMapping") ) {
mesh_.add_property(property,"TextureMapping");
}
if ( mesh_.property(property).find( _id ) == mesh_.property(property).end() )
mesh_.property(property)[_id] = _name;
}
// low-level access to mesh
virtual BaseKernel* kernel() { return &mesh_; }
bool is_triangle_mesh() const
{ return Mesh::is_triangles(); }
void reserve(unsigned int nV, unsigned int nE, unsigned int nF)
{
mesh_.reserve(nV, nE, nF);
}
// query number of faces, vertices, normals, texcoords
size_t n_vertices() const { return mesh_.n_vertices(); }
size_t n_faces() const { return mesh_.n_faces(); }
size_t n_edges() const { return mesh_.n_edges(); }
void prepare() { }
void finish() { }
private:
Mesh& mesh_;
// stores normals for halfedges of the next face
std::map<VertexHandle,Normal> halfedgeNormals_;
};
//=============================================================================
} // namespace IO
} // namespace OpenMesh
//=============================================================================
#endif
//=============================================================================
OpenMesh::HalfedgeHandle
Handle for a halfedge entity.
Definition: Handles.hh:132
OpenMesh::BaseKernel
This class provides low-level property management like adding/removing properties and access to prope...
Definition: BaseKernel.hh:102
omstream.hh
This file provides the streams omlog, omout, and omerr.
OpenMesh::FaceHandle
Handle for a face entity.
Definition: Handles.hh:146
Attributes.hh
This file provides some macros containing attribute usage.
OpenMesh::BaseHandle::is_valid
bool is_valid() const
The handle is valid iff the index is not negative.
Definition: Handles.hh:77
OpenMesh
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition: MeshItems.hh:64
OpenMesh::VectorT< float, 3 >
OpenMesh::IO::ImporterT
This class template provides an importer module for OpenMesh meshes.
Definition: ImporterT.hh:85
OpenMesh::Attributes::TexCoord3D
Add 3D texture coordinates (vertices, halfedges)
Definition: Attributes.hh:93
OpenMesh::VertexHandle
Handle for a vertex entity.
Definition: Handles.hh:125
OpenMesh::Attributes::Normal
Add normals to mesh item (vertices/faces)
Definition: Attributes.hh:87
OpenMesh::Attributes::Color
Add colors to mesh item (vertices/faces/edges)
Definition: Attributes.hh:88
OpenMesh::IO::BaseImporter
Base class for importer modules.
Definition: BaseImporter.hh:88
VectorT< float, 4 >
OpenMesh::MPropHandleT
Handle representing a mesh property.
Definition: Property.hh:543
OpenMesh::EdgeHandle
Handle for a edge entity.
Definition: Handles.hh:139
OpenMesh::Attributes::TexCoord2D
Add 2D texture coordinates (vertices, halfedges)
Definition: Attributes.hh:92