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first commit.

This commit is contained in:
Marco Di Benedetto 2009-10-23 10:04:51 +00:00
parent 1994b5b493
commit d650013e60
1 changed files with 278 additions and 0 deletions
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278
vcg/complex/trimesh/attribute_seam.h Normal file
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#ifndef VCG_TRI_ATTRIBUTE_SEAM_H
#define VCG_TRI_ATTRIBUTE_SEAM_H
#include <vector>
#include <vcg/complex/trimesh/allocate.h>
/*
// sample extract functor
void v_extract(const src_mesh_t & wm, const src_face_t & f, int k, const dst_mesh_t & vm, dst_vertex_t & v)
{
(void)wm;
(void)vm;
v.P() = f.cP (k);
v.N() = f.cWN(k);
v.C() = f.cWC(k);
v.T() = f.cWT(k);
}
// sample compare functor
bool v_compare(const dst_mesh_t & vm, const dst_vertex_t & u, const dst_vertex_t & v)
{
(void)vm;
return
(
(u.cN() == v.cN())
&& (u.cC() == v.cC())
&& (u.cT() == v.cT())
);
}
// sample copy functor
void v_copy(const dst_mesh_t & vm, const dst_vertex_t & u, dst_vertex_t & v)
{
(void)vm;
v.P() = u.cP();
v.N() = u.cN();
v.C() = u.cC();
v.T() = u.cT();
}
// create seams
AttributeSeam::SplitVertex(src, dst, v_extract, v_compare, v_copy, 1.10f);
*/
namespace vcg
{
namespace tri
{
class AttributeSeam
{
public:
typedef AttributeSeam ThisType;
// in-place version
template <typename src_trimesh_t, typename extract_wedge_attribs_t, typename compare_vertex_attribs_t>
static inline bool SplitVertex(src_trimesh_t & src, extract_wedge_attribs_t v_extract, compare_vertex_attribs_t & v_compare)
{
typedef typename src_trimesh_t::VertexType src_vertex_t;
typedef typename src_trimesh_t::VertexIterator src_vertex_i;
typedef typename src_trimesh_t::FaceType src_face_t;
typedef typename src_trimesh_t::FaceIterator src_face_i;
typedef vcg::tri::Allocator<src_trimesh_t> src_mesh_allocator_t;
if ((src.vn <= 0) || (src.fn <= 0))
{
return true;
}
const size_t vertex_count = src.vert.size();
const size_t vertex_pool_size = vertex_count;
const src_vertex_t * vtxbase = &(src.vert[0]);
std::vector<int> vloc;
vloc.reserve(vertex_pool_size);
vloc.resize(vertex_count, -2);
std::vector<src_vertex_t> & new_vertices = src.vert;
src_vertex_t vtx;
int vcount = int(new_vertices.size());
int idx = 0;
src_vertex_i vi;
for (src_face_i it=src.face.begin(); it!=src.face.end(); ++it)
{
src_face_t & f = (*it);
if (f.IsD()) continue;
for (int k=0; k<3; ++k)
{
idx = (f.cV(k) - vtxbase);
v_extract(src, f, k, src, vtx);
if (vloc[idx] == -2)
{
vloc[idx] = -1;
new_vertices[idx] = vtx;
}
else
{
int vidx = idx;
do
{
if (v_compare(src, new_vertices[vidx], vtx)) break;
vidx = vloc[vidx];
} while (vidx >= 0);
if (vidx < 0)
{
vloc.push_back(vloc[idx]);
vloc[idx] = vcount;
vi = src_mesh_allocator_t::AddVertices(src, 1);
*vi = vtx;
vtxbase = &(src.vert[0]);
idx = vcount;
vcount++;
}
else
{
idx = vidx;
}
}
f.V(k) = &(src.vert[idx]);
}
}
return true;
}
// out-of-place version
template <typename src_trimesh_t, typename dst_trimesh_t, typename extract_wedge_attribs_t, typename compare_vertex_attribs_t, typename copy_vertex_t>
static inline bool SplitVertex(const src_trimesh_t & src, dst_trimesh_t & dst, extract_wedge_attribs_t & v_extract, compare_vertex_attribs_t & v_compare, copy_vertex_t & v_copy)
{
typedef typename src_trimesh_t::VertexType src_vertex_t;
typedef typename src_trimesh_t::FaceType src_face_t;
typedef typename src_trimesh_t::ConstFaceIterator src_face_ci;
typedef typename dst_trimesh_t::VertContainer dst_vertex_container_t;
typedef typename dst_trimesh_t::VertexType dst_vertex_t;
typedef typename dst_trimesh_t::VertexIterator dst_vertex_i;
typedef typename dst_trimesh_t::FaceType dst_face_t;
typedef typename dst_trimesh_t::FaceIterator dst_face_i;
typedef vcg::tri::Allocator<dst_trimesh_t> dst_mesh_allocator_t;
typedef dst_mesh_allocator_t::PointerUpdater<typename dst_trimesh_t::VertexPointer> dst_pointer_updater_t;
if (reinterpret_cast<const void *>(&src) == reinterpret_cast<const void *>(&dst))
{
return false;
}
dst.Clear();
if ((src.vn <= 0) || (src.fn <= 0))
{
return true;
}
dst_trimesh_t dummy_mesh;
dummy_mesh.vert = dst.vert;
dst_mesh_allocator_t::AddVertices(dummy_mesh, 1);
dst_vertex_t & vtx = dummy_mesh.vert[0];
const size_t vertex_count = src.vert.size();
const size_t vertex_pool_size = vertex_count;
const src_vertex_t * vtxbase = &(src.vert[0]);
std::vector<int> vloc;
vloc.reserve(vertex_pool_size);
vloc.resize(vertex_count, -2);
dst_vertex_i vv;
dst_pointer_updater_t pt_upd;
pt_upd.preventUpdateFlag = true;
dst_mesh_allocator_t::AddVertices(dst, int(vertex_count), pt_upd);
dst_face_i fbase = dst_mesh_allocator_t::AddFaces(dst, src.fn);
dst_face_i fi = fbase;
int vcount = int(dst.vert.size());
int idx = 0;
for (src_face_ci it=src.face.begin(); it!=src.face.end(); ++it)
{
const src_face_t & wf = (*it);
if (wf.IsD()) continue;
dst_face_t & vf = (*fi);
for (int k=0; k<3; ++k)
{
idx = (wf.cV(k) - vtxbase);
v_extract(src, wf, k, dst, vtx);
if (vloc[idx] == -2)
{
vloc[idx] = -1;
v_copy(dst, vtx, dst.vert[idx]);
}
else
{
int vidx = idx;
do
{
if (v_compare(dst, dst.vert[vidx], vtx)) break;
vidx = vloc[vidx];
} while (vidx >= 0);
if (vidx < 0)
{
vloc.push_back(vloc[idx]);
vloc[idx] = vcount;
vv = dst_mesh_allocator_t::AddVertices(dst, 1, pt_upd);
v_copy(dst, vtx, *vv);
idx = vcount;
vcount++;
}
else
{
idx = vidx;
}
}
vf.V(k) = reinterpret_cast<dst_vertex_t *>(idx);
}
fi++;
}
{
std::vector<int> tmp;
vloc.swap(tmp);
}
dst_vertex_t * vstart = &(dst.vert[0]);
for (dst_face_i it=fbase; it!=dst.face.end(); ++it)
{
dst_face_t & vf = (*it);
vf.V(0) = vstart + reinterpret_cast<const int>(vf.V(0));
vf.V(1) = vstart + reinterpret_cast<const int>(vf.V(1));
vf.V(2) = vstart + reinterpret_cast<const int>(vf.V(2));
}
return true;
}
};
} // end namespace tri
} // end namespace vcg
#endif // VCG_TRI_ATTRIBUTE_SEAM_H