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114 lines
3.5 KiB
C++
114 lines
3.5 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2016 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 "readBF.h"
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#include "list_to_matrix.h"
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#include <vector>
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#include <cstdio>
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#include <fstream>
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#include <cassert>
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#include <functional>
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template <
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typename DerivedWI,
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typename DerivedP,
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typename DerivedO>
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IGL_INLINE bool igl::readBF(
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const std::string & filename,
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Eigen::PlainObjectBase<DerivedWI> & WI,
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Eigen::PlainObjectBase<DerivedP> & P,
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Eigen::PlainObjectBase<DerivedO> & O)
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{
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using namespace std;
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ifstream is(filename);
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if(!is.is_open())
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{
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return false;
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}
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string line;
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std::vector<typename DerivedWI::Scalar> vWI;
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std::vector<typename DerivedP::Scalar> vP;
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std::vector<std::vector<typename DerivedO::Scalar> > vO;
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while(getline(is, line))
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{
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int wi,p;
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double cx,cy,cz;
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if(sscanf(line.c_str(), "%d %d %lg %lg %lg",&wi,&p,&cx,&cy,&cz) != 5)
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{
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return false;
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}
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vWI.push_back(wi);
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vP.push_back(p);
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vO.push_back({cx,cy,cz});
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}
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list_to_matrix(vWI,WI);
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list_to_matrix(vP,P);
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list_to_matrix(vO,O);
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return true;
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}
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template <
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typename DerivedWI,
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typename DerivedbfP,
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typename DerivedO,
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typename DerivedC,
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typename DerivedBE,
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typename DerivedP>
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IGL_INLINE bool igl::readBF(
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const std::string & filename,
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Eigen::PlainObjectBase<DerivedWI> & WI,
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Eigen::PlainObjectBase<DerivedbfP> & bfP,
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Eigen::PlainObjectBase<DerivedO> & offsets,
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Eigen::PlainObjectBase<DerivedC> & C,
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Eigen::PlainObjectBase<DerivedBE> & BE,
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Eigen::PlainObjectBase<DerivedP> & P)
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{
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using namespace Eigen;
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using namespace std;
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if(!readBF(filename,WI,bfP,offsets))
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{
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return false;
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}
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C.resize(WI.rows(),3);
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vector<bool> computed(C.rows(),false);
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// better not be cycles in bfP
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std::function<Eigen::RowVector3d(const int)> locate_tip;
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locate_tip =
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[&offsets,&computed,&bfP,&locate_tip,&C](const int w)->Eigen::RowVector3d
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{
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if(w<0) return Eigen::RowVector3d(0,0,0);
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if(computed[w]) return C.row(w);
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computed[w] = true;
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return C.row(w) = locate_tip(bfP(w)) + offsets.row(w);
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};
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int num_roots = (bfP.array() == -1).count();
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BE.resize(WI.rows()-num_roots,2);
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P.resize(BE.rows());
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for(int c = 0;c<C.rows();c++)
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{
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locate_tip(c);
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assert(c>=0);
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// weight associated with this bone
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const int wi = WI(c);
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if(wi >= 0)
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{
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// index into C
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const int p = bfP(c);
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assert(p >= 0 && "No weights for roots allowed");
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// index into BE
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const int pwi = WI(p);
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P(wi) = pwi;
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BE(wi,0) = p;
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BE(wi,1) = c;
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}
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}
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return true;
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}
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#ifdef IGL_STATIC_LIBRARY
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template bool igl::readBF<Eigen::Matrix<int, -1, 1, 0, -1, 1>, Eigen::Matrix<int, -1, 1, 0, -1, 1>, Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, 1, 0, -1, 1> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&);
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#endif
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