mirror of
https://github.com/SoftFever/OrcaSlicer.git
synced 2025-10-23 08:41:11 -06:00
2ae2672ee9
Fixing dep build script on Windows and removing some warnings. Use bundled igl by default. Not building with the dependency scripts if not explicitly stated. This way, it will stay in Fix the libigl patch to include C source files in header only mode.
95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
|
|
//
|
|
// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
|
|
//
|
|
// This Source Code Form is subject to the terms of the Mozilla Public License
|
|
// v. 2.0. If a copy of the MPL was not distributed with this file, You can
|
|
// obtain one at http://mozilla.org/MPL/2.0/.
|
|
#include "orient_outward.h"
|
|
#include "per_face_normals.h"
|
|
#include "barycenter.h"
|
|
#include "doublearea.h"
|
|
#include <iostream>
|
|
|
|
template <
|
|
typename DerivedV,
|
|
typename DerivedF,
|
|
typename DerivedC,
|
|
typename DerivedFF,
|
|
typename DerivedI>
|
|
IGL_INLINE void igl::orient_outward(
|
|
const Eigen::PlainObjectBase<DerivedV> & V,
|
|
const Eigen::PlainObjectBase<DerivedF> & F,
|
|
const Eigen::PlainObjectBase<DerivedC> & C,
|
|
Eigen::PlainObjectBase<DerivedFF> & FF,
|
|
Eigen::PlainObjectBase<DerivedI> & I)
|
|
{
|
|
using namespace Eigen;
|
|
using namespace std;
|
|
assert(C.rows() == F.rows());
|
|
assert(F.cols() == 3);
|
|
assert(V.cols() == 3);
|
|
|
|
// number of faces
|
|
const int m = F.rows();
|
|
// number of patches
|
|
const int num_cc = C.maxCoeff()+1;
|
|
I.resize(num_cc);
|
|
if(&FF != &F)
|
|
{
|
|
FF = F;
|
|
}
|
|
DerivedV N,BC,BCmean;
|
|
Matrix<typename DerivedV::Scalar,Dynamic,1> A;
|
|
VectorXd totA(num_cc), dot(num_cc);
|
|
Matrix<typename DerivedV::Scalar,3,1> Z(1,1,1);
|
|
per_face_normals(V,F,Z.normalized(),N);
|
|
barycenter(V,F,BC);
|
|
doublearea(V,F,A);
|
|
BCmean.setConstant(num_cc,3,0);
|
|
dot.setConstant(num_cc,1,0);
|
|
totA.setConstant(num_cc,1,0);
|
|
// loop over faces
|
|
for(int f = 0;f<m;f++)
|
|
{
|
|
BCmean.row(C(f)) += A(f)*BC.row(f);
|
|
totA(C(f))+=A(f);
|
|
}
|
|
// take area weighted average
|
|
for(int c = 0;c<num_cc;c++)
|
|
{
|
|
BCmean.row(c) /= (typename DerivedV::Scalar) totA(c);
|
|
}
|
|
// subtract bcmean
|
|
for(int f = 0;f<m;f++)
|
|
{
|
|
BC.row(f) -= BCmean.row(C(f));
|
|
dot(C(f)) += A(f)*N.row(f).dot(BC.row(f));
|
|
}
|
|
// take area weighted average
|
|
for(int c = 0;c<num_cc;c++)
|
|
{
|
|
dot(c) /= (typename DerivedV::Scalar) totA(c);
|
|
if(dot(c) < 0)
|
|
{
|
|
I(c) = true;
|
|
}else
|
|
{
|
|
I(c) = false;
|
|
}
|
|
}
|
|
// flip according to I
|
|
for(int f = 0;f<m;f++)
|
|
{
|
|
if(I(C(f)))
|
|
{
|
|
FF.row(f) = FF.row(f).reverse().eval();
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef IGL_STATIC_LIBRARY
|
|
// Explicit template instantiation
|
|
template void igl::orient_outward<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, 1, 0, -1, 1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, 1, 0, -1, 1> >(Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&);
|
|
#endif
|
|
|