You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 

67 lines
2.2 KiB

// This file is part of libigl, a simple c++ geometry processing library.
//
// Copyright (C) 2020 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_TETRAHEDRALIZED_GRID_H
#define IGL_TETRAHEDRALIZED_GRID_H
#include "igl_inline.h"
#include <Eigen/Core>
namespace igl
{
enum TetrahedralizedGripType
{
TETRAHEDRALIZED_GRID_TYPE_5 = 0,
TETRAHEDRALIZED_GRID_TYPE_6_ROTATIONAL = 1,
NUM_TETRAHEDRALIZED_GRID_TYPE = 2
};
// Construct vertices of a regular grid, suitable for input to
// `igl::marching_tets`
//
// Inputs:
// nx number of grid vertices in x direction
// ny number of grid vertices in y direction
// nz number of grid vertices in z direction
// type type of tetrahedralization of cube to use
// Outputs:
// GV nx*ny*nz by 3 list of grid vertex positions
// GT (nx-1)*(ny-1)*(nz-1)*k by 4 list of tetrahedron indices into rows of
// V, where k is the number of tets per cube (dependent on type)
//
// See also: triangulated_grid, quad_grid
template <
typename DerivedGV,
typename DerivedGT>
IGL_INLINE void tetrahedralized_grid(
const int nx,
const int ny,
const int nz,
const TetrahedralizedGripType type,
Eigen::PlainObjectBase<DerivedGV> & GV,
Eigen::PlainObjectBase<DerivedGT> & GT);
//
// Inputs:
// GV nx*ny*nz by 3 list of grid vertex positions
// side 3-long list {nx,ny,nz} see above
// type type of tetrahedralization of cube to use
// Outputs:
// GT (nx-1)*(ny-1)*(nz-1)*k by 4 list of tetrahedron indices into rows of
// V, where k is the number of tets per cube (dependent on type)
//
template <
typename DerivedGV,
typename Derivedside,
typename DerivedGT>
IGL_INLINE void tetrahedralized_grid(
const Eigen::MatrixBase<DerivedGV> & GV,
const Eigen::MatrixBase<Derivedside> & side,
const TetrahedralizedGripType type,
Eigen::PlainObjectBase<DerivedGT> & GT);
}
#ifndef IGL_STATIC_LIBRARY
# include "tetrahedralized_grid.cpp"
#endif
#endif