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385 lines
14 KiB
385 lines
14 KiB
/**************************************************************************** |
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* VCGLib o o * |
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* Visual and Computer Graphics Library o o * |
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* _ O _ * |
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* Copyright(C) 2004-2016 \/)\/ * |
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* Visual Computing Lab /\/| * |
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* ISTI - Italian National Research Council | * |
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* \ * |
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* All rights reserved. * |
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* * |
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* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This program is distributed in the hope that it will be useful, * |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) * |
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* for more details. * |
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* * |
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****************************************************************************/ |
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#ifndef VCG_TRI_ATTRIBUTE_SEAM_H |
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#define VCG_TRI_ATTRIBUTE_SEAM_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 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::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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