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124 lines
4.6 KiB
124 lines
4.6 KiB
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2013 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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#ifndef IGL_READOBJ_H
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#define IGL_READOBJ_H
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#include "igl_inline.h"
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// History:
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// return type changed from void to bool Alec 18 Sept 2011
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// added pure vector of vectors version that has much more support Alec 31 Oct
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// 2011
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#ifndef IGL_NO_EIGEN
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# include <Eigen/Core>
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#endif
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#include <string>
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#include <vector>
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#include <cstdio>
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namespace igl
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{
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/// Read a mesh from an ascii obj file, filling in vertex positions, normals
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/// and texture coordinates. Mesh may have faces of any number of degree
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///
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/// @tparam Scalar type for positions and vectors (will be read as double and cast
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/// to Scalar)
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/// @tparam Index type for indices (will be read as int and cast to Index)
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/// @param[in] str path to .obj file
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/// @param[out] V double matrix of vertex positions #V by 3
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/// @param[out] TC double matrix of texture coordinats #TC by 2
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/// @param[out] N double matrix of corner normals #N by 3
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/// @param[out] F #F list of face indices into vertex positions
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/// @param[out] FTC #F list of face indices into vertex texture coordinates
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/// @param[out] FN #F list of face indices into vertex normals
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// @param[out] FM #tuple list containing (vertex index, normal index, texture coordinates index, material)
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/// @return true on success, false on errors
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template <typename Scalar, typename Index>
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IGL_INLINE bool readOBJ(
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const std::string obj_file_name,
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std::vector<std::vector<Scalar > > & V,
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std::vector<std::vector<Scalar > > & TC,
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std::vector<std::vector<Scalar > > & N,
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std::vector<std::vector<Index > > & F,
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std::vector<std::vector<Index > > & FTC,
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std::vector<std::vector<Index > > & FN,
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std::vector<std::tuple<std::string, Index, Index >> &FM
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);
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/// \overload
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template <typename Scalar, typename Index>
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IGL_INLINE bool readOBJ(
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const std::string obj_file_name,
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std::vector<std::vector<Scalar > > & V,
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std::vector<std::vector<Scalar > > & TC,
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std::vector<std::vector<Scalar > > & N,
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std::vector<std::vector<Index > > & F,
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std::vector<std::vector<Index > > & FTC,
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std::vector<std::vector<Index > > & FN);
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/// @param[in,out] obj_file pointer to already opened .obj file (will be
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/// closed)
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template <typename Scalar, typename Index>
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IGL_INLINE bool readOBJ(
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FILE * obj_file,
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std::vector<std::vector<Scalar > > & V,
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std::vector<std::vector<Scalar > > & TC,
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std::vector<std::vector<Scalar > > & N,
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std::vector<std::vector<Index > > & F,
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std::vector<std::vector<Index > > & FTC,
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std::vector<std::vector<Index > > & FN,
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std::vector<std::tuple<std::string, Index, Index >> &FM);
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/// \overload
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template <typename Scalar, typename Index>
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IGL_INLINE bool readOBJ(
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const std::string obj_file_name,
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std::vector<std::vector<Scalar > > & V,
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std::vector<std::vector<Index > > & F);
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/// \overload
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/// \brief Eigen Wrappers. These will return true only if the data is perfectly
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/// "rectangular": All faces are the same degree, all have the same number of
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/// textures/normals etc.
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template <
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typename DerivedV,
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typename DerivedTC,
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typename DerivedCN,
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typename DerivedF,
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typename DerivedFTC,
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typename DerivedFN>
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IGL_INLINE bool readOBJ(
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const std::string str,
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Eigen::PlainObjectBase<DerivedV>& V,
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Eigen::PlainObjectBase<DerivedTC>& TC,
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Eigen::PlainObjectBase<DerivedCN>& CN,
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Eigen::PlainObjectBase<DerivedF>& F,
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Eigen::PlainObjectBase<DerivedFTC>& FTC,
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Eigen::PlainObjectBase<DerivedFN>& FN);
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/// \overload
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template <typename DerivedV, typename DerivedF>
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IGL_INLINE bool readOBJ(
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const std::string str,
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Eigen::PlainObjectBase<DerivedV>& V,
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Eigen::PlainObjectBase<DerivedF>& F);
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/// \overload
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/// \brief Polygon mesh version.
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/// @param[out] I #I vectorized list of polygon corner indices into rows of some matrix V
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/// @param[out] C #P+1 list of cumulative polygon sizes so that C(i+1)-C(i) = size of
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/// the ith polygon, and so I(C(i)) through I(C(i+1)-1) are the indices of
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/// the ith polygon
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template <typename DerivedV, typename DerivedI, typename DerivedC>
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IGL_INLINE bool readOBJ(
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const std::string str,
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Eigen::PlainObjectBase<DerivedV>& V,
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Eigen::PlainObjectBase<DerivedI>& I,
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Eigen::PlainObjectBase<DerivedC>& C);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "readOBJ.cpp"
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#endif
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#endif
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