225 lines
8.1 KiB
C++
225 lines
8.1 KiB
C++
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// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2014 Alec Jacobson <alecjacobson@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#include "readPLY.h"
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#include "list_to_matrix.h"
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#include "ply.h"
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#include <iostream>
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template <
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typename Vtype,
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typename Ftype,
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typename Ntype,
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typename UVtype>
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IGL_INLINE bool igl::readPLY(
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const std::string filename,
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std::vector<std::vector<Vtype> > & V,
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std::vector<std::vector<Ftype> > & F,
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std::vector<std::vector<Ntype> > & N,
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std::vector<std::vector<UVtype> > & UV)
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{
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using namespace std;
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// Largely follows ply2iv.c
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FILE * ply_file = fopen(filename.c_str(),"r");
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if(ply_file == NULL)
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{
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return false;
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}
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return readPLY(ply_file,V,F,N,UV);
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}
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template <
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typename Vtype,
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typename Ftype,
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typename Ntype,
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typename UVtype>
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IGL_INLINE bool igl::readPLY(
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FILE * ply_file,
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std::vector<std::vector<Vtype> > & V,
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std::vector<std::vector<Ftype> > & F,
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std::vector<std::vector<Ntype> > & N,
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std::vector<std::vector<UVtype> > & UV)
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{
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using namespace std;
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typedef struct Vertex {
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double x,y,z; /* position */
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double nx,ny,nz; /* surface normal */
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double s,t; /* texture coordinates */
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void *other_props; /* other properties */
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} Vertex;
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typedef struct Face {
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unsigned char nverts; /* number of vertex indices in list */
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int *verts; /* vertex index list */
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void *other_props; /* other properties */
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} Face;
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igl::ply::PlyProperty vert_props[] = { /* list of property information for a vertex */
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{"x", PLY_DOUBLE, PLY_DOUBLE, offsetof(Vertex,x), 0, 0, 0, 0},
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{"y", PLY_DOUBLE, PLY_DOUBLE, offsetof(Vertex,y), 0, 0, 0, 0},
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{"z", PLY_DOUBLE, PLY_DOUBLE, offsetof(Vertex,z), 0, 0, 0, 0},
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{"nx", PLY_DOUBLE, PLY_DOUBLE, offsetof(Vertex,nx), 0, 0, 0, 0},
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{"ny", PLY_DOUBLE, PLY_DOUBLE, offsetof(Vertex,ny), 0, 0, 0, 0},
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{"nz", PLY_DOUBLE, PLY_DOUBLE, offsetof(Vertex,nz), 0, 0, 0, 0},
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{"s", PLY_DOUBLE, PLY_DOUBLE, offsetof(Vertex,s), 0, 0, 0, 0},
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{"t", PLY_DOUBLE, PLY_DOUBLE, offsetof(Vertex,t), 0, 0, 0, 0},
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};
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igl::ply::PlyProperty face_props[] = { /* list of property information for a face */
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{"vertex_indices", PLY_INT, PLY_INT, offsetof(Face,verts),
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1, PLY_UCHAR, PLY_UCHAR, offsetof(Face,nverts)},
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};
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int nelems;
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char ** elem_names;
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igl::ply::PlyFile * in_ply = igl::ply::ply_read(ply_file,&nelems,&elem_names);
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if(in_ply==NULL)
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{
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return false;
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}
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bool has_normals = false;
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bool has_texture_coords = false;
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igl::ply::PlyProperty **plist;
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int nprops;
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int elem_count;
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plist = ply_get_element_description (in_ply,"vertex", &elem_count, &nprops);
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int native_binary_type = igl::ply::get_native_binary_type2();
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if (plist != NULL)
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{
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/* set up for getting vertex elements */
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ply_get_property (in_ply,"vertex",&vert_props[0]);
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ply_get_property (in_ply,"vertex",&vert_props[1]);
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ply_get_property (in_ply,"vertex",&vert_props[2]);
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for (int j = 0; j < nprops; j++)
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{
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igl::ply::PlyProperty * prop = plist[j];
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if (igl::ply::equal_strings ("nx", prop->name)
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|| igl::ply::equal_strings ("ny", prop->name)
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|| igl::ply::equal_strings ("nz", prop->name))
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{
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ply_get_property (in_ply,"vertex",&vert_props[3]);
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ply_get_property (in_ply,"vertex",&vert_props[4]);
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ply_get_property (in_ply,"vertex",&vert_props[5]);
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has_normals = true;
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}
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if (igl::ply::equal_strings ("s", prop->name) ||
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igl::ply::equal_strings ("t", prop->name))
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{
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ply_get_property(in_ply,"vertex",&vert_props[6]);
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ply_get_property(in_ply,"vertex",&vert_props[7]);
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has_texture_coords = true;
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}
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}
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// Is this call necessary?
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ply_get_other_properties(in_ply,"vertex",
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offsetof(Vertex,other_props));
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V.resize(elem_count,std::vector<Vtype>(3));
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if(has_normals)
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{
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N.resize(elem_count,std::vector<Ntype>(3));
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}else
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{
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N.resize(0);
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}
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if(has_texture_coords)
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{
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UV.resize(elem_count,std::vector<UVtype>(2));
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}else
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{
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UV.resize(0);
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}
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for(int j = 0;j<elem_count;j++)
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{
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Vertex v;
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ply_get_element_setup(in_ply,"vertex",3,vert_props);
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ply_get_element(in_ply,(void*)&v, &native_binary_type);
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V[j][0] = v.x;
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V[j][1] = v.y;
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V[j][2] = v.z;
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if(has_normals)
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{
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N[j][0] = v.nx;
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N[j][1] = v.ny;
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N[j][2] = v.nz;
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}
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if(has_texture_coords)
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{
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UV[j][0] = v.s;
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UV[j][1] = v.t;
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}
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}
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}
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plist = ply_get_element_description (in_ply,"face", &elem_count, &nprops);
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if (plist != NULL)
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{
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F.resize(elem_count);
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ply_get_property(in_ply,"face",&face_props[0]);
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for (int j = 0; j < elem_count; j++)
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{
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Face f;
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ply_get_element(in_ply, (void *) &f, &native_binary_type);
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for(size_t c = 0;c<f.nverts;c++)
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{
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F[j].push_back(f.verts[c]);
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}
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}
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}
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ply_close(in_ply);
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return true;
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}
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedN,
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typename DerivedUV>
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IGL_INLINE bool igl::readPLY(
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const std::string filename,
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Eigen::PlainObjectBase<DerivedV> & V,
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Eigen::PlainObjectBase<DerivedF> & F,
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Eigen::PlainObjectBase<DerivedN> & N,
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Eigen::PlainObjectBase<DerivedUV> & UV)
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{
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std::vector<std::vector<typename DerivedV::Scalar> > vV;
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std::vector<std::vector<typename DerivedF::Scalar> > vF;
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std::vector<std::vector<typename DerivedN::Scalar> > vN;
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std::vector<std::vector<typename DerivedUV::Scalar> > vUV;
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if(!readPLY(filename,vV,vF,vN,vUV))
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{
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return false;
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}
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return
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list_to_matrix(vV,V) &&
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list_to_matrix(vF,F) &&
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list_to_matrix(vN,N) &&
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list_to_matrix(vUV,UV);
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}
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template <
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typename DerivedV,
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typename DerivedF>
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IGL_INLINE bool igl::readPLY(
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const std::string filename,
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Eigen::PlainObjectBase<DerivedV> & V,
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Eigen::PlainObjectBase<DerivedF> & F)
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{
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Eigen::MatrixXd N,UV;
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return readPLY(filename,V,F,N,UV);
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}
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#ifdef IGL_STATIC_LIBRARY
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// Explicit template instantiation
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template bool igl::readPLY<double, int, double, double>(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const, std::vector<std::vector<double, std::allocator<double> >, std::allocator<std::vector<double, std::allocator<double> > > >&, std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >&, std::vector<std::vector<double, std::allocator<double> >, std::allocator<std::vector<double, std::allocator<double> > > >&, std::vector<std::vector<double, std::allocator<double> >, std::allocator<std::vector<double, std::allocator<double> > > >&);
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template bool igl::readPLY<Eigen::Matrix<double, Eigen::Dynamic, Eigen::Dynamic>, Eigen::Matrix<int, Eigen::Dynamic, Eigen::Dynamic>, Eigen::Matrix<double, Eigen::Dynamic, Eigen::Dynamic>, Eigen::Matrix<double, Eigen::Dynamic, Eigen::Dynamic> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const, Eigen::PlainObjectBase<Eigen::Matrix<double, Eigen::Dynamic, Eigen::Dynamic> > &, Eigen::PlainObjectBase<Eigen::Matrix<int, Eigen::Dynamic, Eigen::Dynamic> > &, Eigen::PlainObjectBase<Eigen::Matrix<double, Eigen::Dynamic, Eigen::Dynamic> > &, Eigen::PlainObjectBase<Eigen::Matrix<double, Eigen::Dynamic, Eigen::Dynamic> > &);
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template bool igl::readPLY<Eigen::Matrix<double, Eigen::Dynamic, Eigen::Dynamic>, Eigen::Matrix<int, Eigen::Dynamic, Eigen::Dynamic> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const, Eigen::PlainObjectBase<Eigen::Matrix<double, Eigen::Dynamic, Eigen::Dynamic> > &, Eigen::PlainObjectBase<Eigen::Matrix<int, Eigen::Dynamic, Eigen::Dynamic> > &);
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template bool igl::readPLY<Eigen::Matrix<float, -1, 3, 1, -1, 3>, Eigen::Matrix<int, -1, 3, 1, -1, 3> >(std::string, Eigen::PlainObjectBase<Eigen::Matrix<float, -1, 3, 1, -1, 3> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 3, 1, -1, 3> >&);
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#endif
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