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/****************************************************************************
* VCGLib o o *
* Visual and Computer Graphics Library o o *
* _ O _ *
* Copyright(C) 2004-2016 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
* All rights reserved. *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program 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 General Public License (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
#ifndef VCG_TRI_ATTRIBUTE_SEAM_H
#define VCG_TRI_ATTRIBUTE_SEAM_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;
enum ASMask
{
POSITION_PER_VERTEX = (1 << 0),
NORMAL_PER_VERTEX = (1 << 1),
NORMAL_PER_WEDGE = (1 << 2),
NORMAL_PER_FACE = (1 << 3),
COLOR_PER_VERTEX = (1 << 4),
COLOR_PER_WEDGE = (1 << 5),
COLOR_PER_FACE = (1 << 6),
TEXCOORD_PER_VERTEX = (1 << 7),
TEXCOORD_PER_WEDGE = (1 << 8)
};
template <typename src_trimesh_t, typename dst_trimesh_t>
struct ASExtract
{
const unsigned int mask;
ASExtract(unsigned int vmask = 0) : mask(vmask)
{
;
}
void operator () (const src_trimesh_t & sm, const typename src_trimesh_t::FaceType & f, int k, const dst_trimesh_t & dm, typename dst_trimesh_t::VertexType & v) const
{
(void)sm;
(void)dm;
const unsigned int m = this->mask;
const typename src_trimesh_t::VertexType & u = *(f.cV(k));
if ((m & AttributeSeam::POSITION_PER_VERTEX) != 0) v.P() = f.cP (k);
if ((m & AttributeSeam::NORMAL_PER_VERTEX) != 0) v.N() = u.cN ( );
if ((m & AttributeSeam::NORMAL_PER_WEDGE) != 0) v.N() = f.cWN(k);
if ((m & AttributeSeam::NORMAL_PER_FACE) != 0) v.N() = f.cN ( );
if ((m & AttributeSeam::COLOR_PER_VERTEX) != 0) v.C() = u.cC ( );
if ((m & AttributeSeam::COLOR_PER_WEDGE) != 0) v.C() = f.cWC(k);
if ((m & AttributeSeam::COLOR_PER_FACE) != 0) v.C() = f.cC ( );
if ((m & AttributeSeam::TEXCOORD_PER_VERTEX) != 0) v.T() = u.cT ( );
if ((m & AttributeSeam::TEXCOORD_PER_WEDGE) != 0) v.T() = f.cWT(k);
}
};
template <typename dst_trimesh_t>
struct ASCompare
{
const unsigned int mask;
ASCompare(unsigned int vmask = 0) : mask(vmask)
{
;
}
bool operator () (const dst_trimesh_t & sm, const typename dst_trimesh_t::VertexType & u, const typename dst_trimesh_t::VertexType & v) const
{
(void)sm;
const unsigned int m = this->mask;
/*
if ((m & (AttributeSeam::POSITION_PER_VERTEX)) != 0)
{
if (u.cP() != v.cP()) return false;
}
*/
if ((m & (AttributeSeam::NORMAL_PER_VERTEX | AttributeSeam::NORMAL_PER_WEDGE | AttributeSeam::NORMAL_PER_FACE)) != 0)
{
if (u.cN() != v.cN()) return false;
}
if ((m & (AttributeSeam::COLOR_PER_VERTEX | AttributeSeam::COLOR_PER_WEDGE | AttributeSeam::COLOR_PER_FACE)) != 0)
{
if (u.cC() != v.cC()) return false;
}
if ((m & (AttributeSeam::TEXCOORD_PER_VERTEX | AttributeSeam::TEXCOORD_PER_WEDGE)) != 0)
{
if (u.cT() != v.cT()) return false;
}
return true;
}
};
// 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;
typedef typename src_mesh_allocator_t :: template PointerUpdater<typename src_trimesh_t::VertexPointer> src_pointer_updater_t;
if ((src.vn <= 0) || (src.fn <= 0))
{
return true;
}
src_pointer_updater_t pt_upd;
src_vertex_i vi = src_mesh_allocator_t::AddVertices(src, 1, pt_upd);
src_vertex_t * vtx = &(*vi);
src_vertex_t * vtxbase = &(src.vert[0]);
const size_t vertex_count = src.vert.size();
const size_t vertex_pool_size = vertex_count;
std::vector<int> vloc;
vloc.reserve(vertex_pool_size);
vloc.resize(vertex_count, -2);
int vcount = int(src.vert.size());
int idx = 0;
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;
src.vert[idx].ImportData(*vtx);
}
else
{
int vidx = idx;
do
{
if (v_compare(src, src.vert[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, pt_upd);
pt_upd.Update(vtx);
pt_upd.Update(vtxbase);
(*vi).ImportData(*vtx);
idx = vcount;
vcount++;
}
else
{
idx = vidx;
}
}
f.V(k) = &(src.vert[idx]);
}
}
src_mesh_allocator_t::DeleteVertex(src, *vtx);
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::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;
/* GCC gets in troubles and need some hints ("template") to parse the following line */
typedef typename dst_mesh_allocator_t :: template 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;
}
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, 1 + int(vertex_count), pt_upd);
dst_vertex_t * vtx = &(dst.vert[0]);
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);
pt_upd.Update(vtx);
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));
}
dst_mesh_allocator_t::DeleteVertex(dst, *vtx);
return true;
}
};
} // end namespace tri
} // end namespace vcg
#endif // VCG_TRI_ATTRIBUTE_SEAM_H
|
