44 lines
1.4 KiB
C++
44 lines
1.4 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/.
|
|
#ifndef IGL_ORIENT_OUTWARD_H
|
|
#define IGL_ORIENT_OUTWARD_H
|
|
#include "igl_inline.h"
|
|
#include <Eigen/Core>
|
|
namespace igl
|
|
{
|
|
// Orient each component (identified by C) of a mesh (V,F) so the normals on
|
|
// average point away from the patch's centroid.
|
|
//
|
|
// Inputs:
|
|
// V #V by 3 list of vertex positions
|
|
// F #F by 3 list of triangle indices
|
|
// C #F list of components (output of orientable_patches)
|
|
// Outputs:
|
|
// FF #F by 3 list of new triangle indices such that FF(~I,:) = F(~I,:) and
|
|
// FF(I,:) = fliplr(F(I,:)) (OK if &FF = &F)
|
|
// I max(C)+1 list of whether face has been flipped
|
|
template <
|
|
typename DerivedV,
|
|
typename DerivedF,
|
|
typename DerivedC,
|
|
typename DerivedFF,
|
|
typename DerivedI>
|
|
IGL_INLINE void 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);
|
|
};
|
|
|
|
#ifndef IGL_STATIC_LIBRARY
|
|
# include "orient_outward.cpp"
|
|
#endif
|
|
|
|
#endif
|