370 lines
9.4 KiB
C++
370 lines
9.4 KiB
C++
#ifndef VCG_TRI_ATTRIBUTE_SEAM_H
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#define VCG_TRI_ATTRIBUTE_SEAM_H
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#include <vector>
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#include <vcg/complex/allocate.h>
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/*
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// sample extract functor
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void v_extract(const src_mesh_t & wm, const src_face_t & f, int k, const dst_mesh_t & vm, dst_vertex_t & v)
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{
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(void)wm;
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(void)vm;
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v.P() = f.cP (k);
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v.N() = f.cWN(k);
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v.C() = f.cWC(k);
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v.T() = f.cWT(k);
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}
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// sample compare functor
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bool v_compare(const dst_mesh_t & vm, const dst_vertex_t & u, const dst_vertex_t & v)
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{
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(void)vm;
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return
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(
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(u.cN() == v.cN())
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&& (u.cC() == v.cC())
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&& (u.cT() == v.cT())
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);
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}
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// sample copy functor
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void v_copy(const dst_mesh_t & vm, const dst_vertex_t & u, dst_vertex_t & v)
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{
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(void)vm;
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v.P() = u.cP();
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v.N() = u.cN();
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v.C() = u.cC();
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v.T() = u.cT();
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}
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// create seams
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AttributeSeam::SplitVertex(src, dst, v_extract, v_compare, v_copy, 1.10f);
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*/
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namespace vcg
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{
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namespace tri
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{
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class AttributeSeam
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{
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public:
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typedef AttributeSeam ThisType;
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enum ASMask
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{
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POSITION_PER_VERTEX = (1 << 0),
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NORMAL_PER_VERTEX = (1 << 1),
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NORMAL_PER_WEDGE = (1 << 2),
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NORMAL_PER_FACE = (1 << 3),
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COLOR_PER_VERTEX = (1 << 4),
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COLOR_PER_WEDGE = (1 << 5),
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COLOR_PER_FACE = (1 << 6),
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TEXCOORD_PER_VERTEX = (1 << 7),
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TEXCOORD_PER_WEDGE = (1 << 8)
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};
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template <typename src_trimesh_t, typename dst_trimesh_t>
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struct ASExtract
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{
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const unsigned int mask;
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ASExtract(unsigned int vmask = 0) : mask(vmask)
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{
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;
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}
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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
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{
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(void)sm;
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(void)dm;
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const unsigned int m = this->mask;
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const typename src_trimesh_t::VertexType & u = *(f.cV(k));
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if ((m & AttributeSeam::POSITION_PER_VERTEX) != 0) v.P() = f.cP (k);
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if ((m & AttributeSeam::NORMAL_PER_VERTEX) != 0) v.N() = u.cN ( );
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if ((m & AttributeSeam::NORMAL_PER_WEDGE) != 0) v.N() = f.cWN(k);
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if ((m & AttributeSeam::NORMAL_PER_FACE) != 0) v.N() = f.cN ( );
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if ((m & AttributeSeam::COLOR_PER_VERTEX) != 0) v.C() = u.cC ( );
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if ((m & AttributeSeam::COLOR_PER_WEDGE) != 0) v.C() = f.cWC(k);
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if ((m & AttributeSeam::COLOR_PER_FACE) != 0) v.C() = f.cC ( );
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if ((m & AttributeSeam::TEXCOORD_PER_VERTEX) != 0) v.T() = u.cT ( );
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if ((m & AttributeSeam::TEXCOORD_PER_WEDGE) != 0) v.T() = f.cWT(k);
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}
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};
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template <typename dst_trimesh_t>
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struct ASCompare
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{
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const unsigned int mask;
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ASCompare(unsigned int vmask = 0) : mask(vmask)
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{
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;
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}
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bool operator () (const dst_trimesh_t & sm, const typename dst_trimesh_t::VertexType & u, const typename dst_trimesh_t::VertexType & v) const
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{
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(void)sm;
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const unsigned int m = this->mask;
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/*
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if ((m & (AttributeSeam::POSITION_PER_VERTEX)) != 0)
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{
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if (u.cP() != v.cP()) return false;
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}
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*/
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if ((m & (AttributeSeam::NORMAL_PER_VERTEX | AttributeSeam::NORMAL_PER_WEDGE | AttributeSeam::NORMAL_PER_FACE)) != 0)
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{
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if (u.cN() != v.cN()) return false;
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}
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if ((m & (AttributeSeam::COLOR_PER_VERTEX | AttributeSeam::COLOR_PER_WEDGE | AttributeSeam::COLOR_PER_FACE)) != 0)
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{
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if (u.cC() != v.cC()) return false;
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}
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if ((m & (AttributeSeam::TEXCOORD_PER_VERTEX | AttributeSeam::TEXCOORD_PER_WEDGE)) != 0)
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{
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if (u.cT() != v.cT()) return false;
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}
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return true;
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}
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};
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// in-place version
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template <typename src_trimesh_t, typename extract_wedge_attribs_t, typename compare_vertex_attribs_t>
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static inline bool SplitVertex(src_trimesh_t & src, extract_wedge_attribs_t v_extract, compare_vertex_attribs_t & v_compare)
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{
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typedef typename src_trimesh_t::VertexType src_vertex_t;
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typedef typename src_trimesh_t::VertexIterator src_vertex_i;
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typedef typename src_trimesh_t::FaceType src_face_t;
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typedef typename src_trimesh_t::FaceIterator src_face_i;
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typedef typename src_trimesh_t::VertContainer src_vertex_container_t;
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typedef vcg::tri::Allocator<src_trimesh_t> src_mesh_allocator_t;
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typedef typename src_mesh_allocator_t :: template PointerUpdater<typename src_trimesh_t::VertexPointer> src_pointer_updater_t;
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if ((src.vn <= 0) || (src.fn <= 0))
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{
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return true;
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}
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src_pointer_updater_t pt_upd;
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src_vertex_i vi = src_mesh_allocator_t::AddVertices(src, 1, pt_upd);
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src_vertex_t * vtx = &(*vi);
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src_vertex_t * vtxbase = &(src.vert[0]);
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const size_t vertex_count = src.vert.size();
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const size_t vertex_pool_size = vertex_count;
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std::vector<int> vloc;
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vloc.reserve(vertex_pool_size);
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vloc.resize(vertex_count, -2);
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int vcount = int(src.vert.size());
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int idx = 0;
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for (src_face_i it=src.face.begin(); it!=src.face.end(); ++it)
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{
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src_face_t & f = (*it);
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if (f.IsD()) continue;
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for (int k=0; k<3; ++k)
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{
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idx = (f.cV(k) - vtxbase);
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v_extract(src, f, k, src, *vtx);
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if (vloc[idx] == -2)
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{
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vloc[idx] = -1;
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src.vert[idx].ImportData(*vtx);
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}
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else
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{
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int vidx = idx;
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do
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{
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if (v_compare(src, src.vert[vidx], *vtx)) break;
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vidx = vloc[vidx];
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} while (vidx >= 0);
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if (vidx < 0)
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{
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vloc.push_back(vloc[idx]);
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vloc[idx] = vcount;
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vi = src_mesh_allocator_t::AddVertices(src, 1, pt_upd);
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pt_upd.Update(vtx);
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pt_upd.Update(vtxbase);
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(*vi).ImportData(*vtx);
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idx = vcount;
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vcount++;
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}
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else
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{
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idx = vidx;
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}
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}
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f.V(k) = &(src.vert[idx]);
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}
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}
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src_mesh_allocator_t::DeleteVertex(src, *vtx);
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return true;
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}
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// out-of-place version
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template <typename src_trimesh_t, typename dst_trimesh_t, typename extract_wedge_attribs_t, typename compare_vertex_attribs_t, typename copy_vertex_t>
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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)
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{
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typedef typename src_trimesh_t::VertexType src_vertex_t;
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typedef typename src_trimesh_t::FaceType src_face_t;
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typedef typename src_trimesh_t::ConstFaceIterator src_face_ci;
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typedef typename dst_trimesh_t::VertContainer dst_vertex_container_t;
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typedef typename dst_trimesh_t::VertexType dst_vertex_t;
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typedef typename dst_trimesh_t::VertexIterator dst_vertex_i;
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typedef typename dst_trimesh_t::FaceType dst_face_t;
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typedef typename dst_trimesh_t::FaceIterator dst_face_i;
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typedef vcg::tri::Allocator<dst_trimesh_t> dst_mesh_allocator_t;
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/* GCC gets in troubles and need some hints ("template") to parse the following line */
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typedef typename dst_mesh_allocator_t :: template PointerUpdater<typename dst_trimesh_t::VertexPointer> dst_pointer_updater_t;
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if (reinterpret_cast<const void *>(&src) == reinterpret_cast<const void *>(&dst))
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{
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return false;
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}
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dst.Clear();
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if ((src.vn <= 0) || (src.fn <= 0))
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{
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return true;
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}
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const size_t vertex_count = src.vert.size();
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const size_t vertex_pool_size = vertex_count;
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const src_vertex_t * vtxbase = &(src.vert[0]);
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std::vector<int> vloc;
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vloc.reserve(vertex_pool_size);
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vloc.resize(vertex_count, -2);
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dst_vertex_i vv;
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dst_pointer_updater_t pt_upd;
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pt_upd.preventUpdateFlag = true;
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dst_mesh_allocator_t::AddVertices(dst, 1 + int(vertex_count), pt_upd);
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dst_vertex_t * vtx = &(dst.vert[0]);
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dst_face_i fbase = dst_mesh_allocator_t::AddFaces(dst, src.fn);
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dst_face_i fi = fbase;
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int vcount = int(dst.vert.size());
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int idx = 0;
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for (src_face_ci it=src.face.begin(); it!=src.face.end(); ++it)
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{
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const src_face_t & wf = (*it);
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if (wf.IsD()) continue;
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dst_face_t & vf = (*fi);
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for (int k=0; k<3; ++k)
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{
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idx = (wf.cV(k) - vtxbase);
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v_extract(src, wf, k, dst, *vtx);
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if (vloc[idx] == -2)
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{
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vloc[idx] = -1;
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v_copy(dst, *vtx, dst.vert[idx]);
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}
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else
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{
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int vidx = idx;
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do
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{
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if (v_compare(dst, dst.vert[vidx], *vtx)) break;
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vidx = vloc[vidx];
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} while (vidx >= 0);
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if (vidx < 0)
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{
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vloc.push_back(vloc[idx]);
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vloc[idx] = vcount;
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vv = dst_mesh_allocator_t::AddVertices(dst, 1, pt_upd);
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pt_upd.Update(vtx);
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v_copy(dst, *vtx, *vv);
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idx = vcount;
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vcount++;
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}
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else
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{
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idx = vidx;
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}
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}
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vf.V(k) = reinterpret_cast<dst_vertex_t *>(idx);
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}
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fi++;
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}
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{
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std::vector<int> tmp;
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vloc.swap(tmp);
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}
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dst_vertex_t * vstart = &(dst.vert[0]);
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for (dst_face_i it=fbase; it!=dst.face.end(); ++it)
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{
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dst_face_t & vf = (*it);
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vf.V(0) = vstart + reinterpret_cast<const int>(vf.V(0));
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vf.V(1) = vstart + reinterpret_cast<const int>(vf.V(1));
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vf.V(2) = vstart + reinterpret_cast<const int>(vf.V(2));
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}
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dst_mesh_allocator_t::DeleteVertex(dst, *vtx);
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return true;
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}
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};
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} // end namespace tri
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} // end namespace vcg
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#endif // VCG_TRI_ATTRIBUTE_SEAM_H
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