324 lines
13 KiB
C
324 lines
13 KiB
C
|
// Copyright (c) 2018 GeometryFactory (France).
|
||
|
|
// All rights reserved.
|
||
|
|
//
|
||
|
|
// This file is part of CGAL (www.cgal.org).
|
||
|
|
// You can redistribute it and/or modify it under the terms of the GNU
|
||
|
|
// General Public License as published by the Free Software Foundation,
|
||
|
|
// either version 3 of the License, or (at your option) any later version.
|
||
|
|
//
|
||
|
|
// Licensees holding a valid commercial license may use this file in
|
||
|
|
// accordance with the commercial license agreement provided with the software.
|
||
|
|
//
|
||
|
|
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
|
||
|
|
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
||
|
|
//
|
||
|
|
// $URL$
|
||
|
|
// $Id$
|
||
|
|
// SPDX-License-Identifier: GPL-3.0+
|
||
|
|
//
|
||
|
|
//
|
||
|
|
// Author(s) : Sebastien Loriot, Maxime Gimeno
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef CGAL_POLYGON_MESH_PROCESSING_EXTRUDE_H
|
||
|
|
#define CGAL_POLYGON_MESH_PROCESSING_EXTRUDE_H
|
||
|
|
|
||
|
|
#include <CGAL/license/Polygon_mesh_processing/meshing_hole_filling.h>
|
||
|
|
|
||
|
|
|
||
|
|
#include <CGAL/Polygon_mesh_processing/orientation.h>
|
||
|
|
#include <CGAL/boost/graph/named_params_helper.h>
|
||
|
|
#include <CGAL/boost/graph/named_function_params.h>
|
||
|
|
#include <CGAL/boost/graph/copy_face_graph.h>
|
||
|
|
#include <CGAL/Kernel_traits.h>
|
||
|
|
#include <CGAL/boost/graph/Euler_operations.h>
|
||
|
|
#include <vector>
|
||
|
|
|
||
|
|
namespace CGAL {
|
||
|
|
namespace Polygon_mesh_processing {
|
||
|
|
namespace extrude_impl{
|
||
|
|
|
||
|
|
template<typename BorderHalfedgesRange, class PolygonMesh>
|
||
|
|
void create_strip(const BorderHalfedgesRange& input_halfedges,
|
||
|
|
const BorderHalfedgesRange& output_halfedges,
|
||
|
|
PolygonMesh& mesh)
|
||
|
|
{
|
||
|
|
CGAL_assertion(input_halfedges.size() == output_halfedges.size());
|
||
|
|
typedef typename boost::graph_traits<PolygonMesh>::halfedge_descriptor halfedge_descriptor;
|
||
|
|
typedef typename boost::graph_traits<PolygonMesh>::face_descriptor face_descriptor;
|
||
|
|
for(std::size_t i = 0; i < input_halfedges.size(); ++i)
|
||
|
|
{
|
||
|
|
halfedge_descriptor h1 = input_halfedges[i], h2=output_halfedges[i],
|
||
|
|
nh1 = next(h1, mesh), ph2 = prev(h2, mesh);
|
||
|
|
halfedge_descriptor newh = halfedge(add_edge(mesh), mesh),
|
||
|
|
newh_opp = opposite(newh, mesh);
|
||
|
|
// set target vertices of the new halfedges
|
||
|
|
set_target(newh, target(h1, mesh), mesh);
|
||
|
|
set_target(newh_opp, target(ph2, mesh), mesh);
|
||
|
|
// update next/prev pointers
|
||
|
|
set_next(h1, newh_opp, mesh);
|
||
|
|
set_next(newh_opp, h2, mesh);
|
||
|
|
set_next(ph2, newh, mesh);
|
||
|
|
set_next(newh, nh1, mesh);
|
||
|
|
}
|
||
|
|
for(std::size_t i = 0; i < input_halfedges.size(); ++i)
|
||
|
|
{
|
||
|
|
halfedge_descriptor h = input_halfedges[i];
|
||
|
|
face_descriptor nf = add_face(mesh);
|
||
|
|
|
||
|
|
CGAL::cpp11::array<halfedge_descriptor, 4> hedges;
|
||
|
|
for (int k=0; k<4; ++k)
|
||
|
|
{
|
||
|
|
hedges[k]=h;
|
||
|
|
h = next(h, mesh);
|
||
|
|
}
|
||
|
|
|
||
|
|
set_face(hedges[0], nf, mesh);
|
||
|
|
set_face(hedges[1], nf, mesh);
|
||
|
|
set_face(hedges[2], nf, mesh);
|
||
|
|
set_face(hedges[3], nf, mesh);
|
||
|
|
set_halfedge(nf, hedges[0], mesh);
|
||
|
|
Euler::split_face(hedges[0], hedges[2], mesh);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
template<typename PMAP, typename Vector>
|
||
|
|
struct Const_dist_translation{
|
||
|
|
Const_dist_translation(PMAP map, const Vector& dir)
|
||
|
|
:map(map), dir(dir){}
|
||
|
|
|
||
|
|
template<typename VertexDescriptor, typename U>
|
||
|
|
void operator()(const VertexDescriptor vd, const U&) const
|
||
|
|
{
|
||
|
|
typename boost::property_traits<PMAP>::value_type p = get(map, vd) + dir;
|
||
|
|
put(map, vd, p);
|
||
|
|
}
|
||
|
|
|
||
|
|
PMAP map;
|
||
|
|
Vector dir;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct Identity_functor
|
||
|
|
{
|
||
|
|
template<typename T, typename U>
|
||
|
|
void operator()(const T&, const U&) const {}
|
||
|
|
};
|
||
|
|
}//end extrude_impl
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \ingroup PMP_meshing_grp
|
||
|
|
* \brief performs a generalized extrusion of `input` and puts it in `output`.
|
||
|
|
*
|
||
|
|
* This function extrudes the open surface mesh `input` and puts the result in `output`. The mesh generated is a closed
|
||
|
|
* surface mesh with a bottom and top part, both having the same graph combinatorics as `input` (except
|
||
|
|
* that the orientation of the faces of the bottom part is reversed). The bottom and the top parts are
|
||
|
|
* connected by a triangle strip between boundary cycles. The coordinates of the points associated to the
|
||
|
|
* vertices of the bottom and top part are first initialized to the same value as the corresponding
|
||
|
|
* vertices of `input`. Then for each vertex, a call to `bot` and `top` is done for the vertices of the
|
||
|
|
* bottom part and the top part, respectively.
|
||
|
|
* \attention `output` may be self intersecting.
|
||
|
|
* @tparam InputMesh a model of `FaceListGraph`
|
||
|
|
* @tparam OutputMesh a model of `FaceListGraph` and `MutableFaceGraph`
|
||
|
|
* @tparam NamedParameters1 a sequence of \ref pmp_namedparameters "Named Parameters" for `InputMesh`
|
||
|
|
* @tparam NamedParameters2 a sequence of \ref pmp_namedparameters "Named Parameters" for `OutputMesh`
|
||
|
|
* @tparam BottomFunctor a functor providing
|
||
|
|
* \code {.cpp}
|
||
|
|
* void operator()`(boost::graph_traits<InputMesh>::vertex_descriptor input_v,boost::graph_traits<OutputMesh>::vertex_descriptor output_v)
|
||
|
|
* \endcode
|
||
|
|
* where `output_v` is the copy of `input_v` from `input` into the bottom part of `output`.
|
||
|
|
*
|
||
|
|
* @tparam TopFunctor a functor providing a similar `operator()` as `BottomFunctor`.
|
||
|
|
* @param input an open surface mesh to extrude.
|
||
|
|
* @param output a surface mesh that will contain the result of the extrusion.
|
||
|
|
* @param bot functor that will transform all points copied from
|
||
|
|
* `input` in order to shape the bottom part of the extrusion.
|
||
|
|
* @param top functor that will transform all points copied from
|
||
|
|
* `input` in order to shape the top part of the extrusion.
|
||
|
|
* @param np_in an optional sequence of \ref pmp_namedparameters "Named Parameters" among the ones listed below
|
||
|
|
*
|
||
|
|
* \cgalNamedParamsBegin
|
||
|
|
* \cgalParamBegin{vertex_point_map}
|
||
|
|
* the property map that contains the points associated to the vertices of `input`.
|
||
|
|
* If this parameter is omitted, an internal property map for `CGAL::vertex_point_t`
|
||
|
|
* should be available for the vertices of `input` \cgalParamEnd
|
||
|
|
* \cgalNamedParamsEnd
|
||
|
|
*
|
||
|
|
* * @param np_out an optional sequence of \ref pmp_namedparameters "Named Parameters" among the ones listed below
|
||
|
|
*
|
||
|
|
* \cgalNamedParamsBegin
|
||
|
|
* \cgalParamBegin{vertex_point_map}
|
||
|
|
* the property map that will contain the points associated to the vertices of `output`.
|
||
|
|
* If this parameter is omitted, an internal property map for `CGAL::vertex_point_t`
|
||
|
|
* should be available for the vertices of `output` \cgalParamEnd
|
||
|
|
* \cgalNamedParamsEnd
|
||
|
|
*/
|
||
|
|
template <class InputMesh,
|
||
|
|
class OutputMesh,
|
||
|
|
class BottomFunctor,
|
||
|
|
class TopFunctor,
|
||
|
|
class NamedParameters1,
|
||
|
|
class NamedParameters2
|
||
|
|
>
|
||
|
|
void extrude_mesh(const InputMesh& input,
|
||
|
|
OutputMesh& output,
|
||
|
|
const BottomFunctor& bot,
|
||
|
|
const TopFunctor& top,
|
||
|
|
const NamedParameters1& np_in,
|
||
|
|
const NamedParameters2& np_out)
|
||
|
|
{
|
||
|
|
typedef typename boost::graph_traits<InputMesh>::vertex_descriptor input_vertex_descriptor;
|
||
|
|
typedef typename boost::graph_traits<InputMesh>::halfedge_descriptor input_halfedge_descriptor;
|
||
|
|
|
||
|
|
typedef typename boost::graph_traits<OutputMesh>::vertex_descriptor output_vertex_descriptor;
|
||
|
|
typedef typename boost::graph_traits<OutputMesh>::halfedge_descriptor output_halfedge_descriptor;
|
||
|
|
|
||
|
|
CGAL_assertion(!CGAL::is_closed(input));
|
||
|
|
typedef typename GetVertexPointMap < OutputMesh, NamedParameters2>::type VPMap;
|
||
|
|
typedef typename GetVertexPointMap < InputMesh, NamedParameters1>::const_type IVPMap;
|
||
|
|
|
||
|
|
VPMap output_vpm = choose_param(get_param(np_out, internal_np::vertex_point),
|
||
|
|
get_property_map(vertex_point, output));
|
||
|
|
IVPMap input_vpm = choose_param(get_param(np_in, internal_np::vertex_point),
|
||
|
|
get_const_property_map(vertex_point, input));
|
||
|
|
|
||
|
|
std::vector<std::pair<input_vertex_descriptor, output_vertex_descriptor> > bottom_v2v;
|
||
|
|
std::vector<std::pair<input_halfedge_descriptor, output_halfedge_descriptor> > bottom_h2h;
|
||
|
|
copy_face_graph(input, output, std::back_inserter(bottom_v2v),
|
||
|
|
std::back_inserter(bottom_h2h), Emptyset_iterator(),
|
||
|
|
input_vpm, output_vpm);
|
||
|
|
|
||
|
|
// create the offset for the other side
|
||
|
|
for(std::size_t i = 0; i< bottom_v2v.size(); ++i)
|
||
|
|
{
|
||
|
|
bot(bottom_v2v[i].first, bottom_v2v[i].second);
|
||
|
|
}
|
||
|
|
CGAL::Polygon_mesh_processing::reverse_face_orientations(output);
|
||
|
|
|
||
|
|
// collect border halfedges for the creation of the triangle strip
|
||
|
|
std::vector<std::pair<input_vertex_descriptor, output_vertex_descriptor> > top_v2v;
|
||
|
|
std::vector<std::pair<input_halfedge_descriptor, output_halfedge_descriptor> > top_h2h;
|
||
|
|
copy_face_graph(input, output, std::inserter(top_v2v, top_v2v.end()),
|
||
|
|
std::inserter(top_h2h, top_h2h.end()), Emptyset_iterator(),
|
||
|
|
input_vpm, output_vpm);
|
||
|
|
for(std::size_t i = 0; i< top_v2v.size(); ++i)
|
||
|
|
{
|
||
|
|
top(top_v2v[i].first, top_v2v[i].second);
|
||
|
|
}
|
||
|
|
std::vector<output_halfedge_descriptor> border_hedges;
|
||
|
|
std::vector<output_halfedge_descriptor> offset_border_hedges;
|
||
|
|
for(std::size_t i = 0; i< top_h2h.size(); ++i)
|
||
|
|
{
|
||
|
|
input_halfedge_descriptor h = top_h2h[i].first;
|
||
|
|
if( CGAL::is_border(h, input) )
|
||
|
|
{
|
||
|
|
border_hedges.push_back(top_h2h[i].second);
|
||
|
|
offset_border_hedges.push_back(bottom_h2h[i].second);
|
||
|
|
CGAL_assertion(is_border(border_hedges.back(), output));
|
||
|
|
CGAL_assertion(is_border(offset_border_hedges.back(), output));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// now create a triangle strip
|
||
|
|
extrude_impl::create_strip(border_hedges, offset_border_hedges, output);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \ingroup PMP_meshing_grp
|
||
|
|
* fills `output` with a closed mesh bounding the volume swept by `input` when translating its
|
||
|
|
* vertices by `v`. The mesh is oriented so that the faces corresponding to `input`
|
||
|
|
* in `output` have the same orientation.
|
||
|
|
* \attention `output` may be self intersecting.
|
||
|
|
* @tparam InputMesh a model of the concept `FaceListGraph`
|
||
|
|
* @tparam OutputMesh a model of the concept `FaceListGraph` and `MutableFaceGraph`
|
||
|
|
* @tparam Vector_3 vector type from the same CGAL kernel as the point of the vertex point map used for `OutputMesh`.
|
||
|
|
* @tparam NamedParameters1 a sequence of \ref pmp_namedparameters "Named Parameters" for `InputMesh`
|
||
|
|
* @tparam NamedParameters2 a sequence of \ref pmp_namedparameters "Named Parameters" for `OutputMesh`
|
||
|
|
* @param input an open surface mesh to extrude.
|
||
|
|
* @param output a surface mesh that will contain the result of the extrusion.
|
||
|
|
* @param v the vector defining the direction of the extrusion
|
||
|
|
* @param np_in an optional sequence of \ref pmp_namedparameters "Named Parameters" among the ones listed below
|
||
|
|
*
|
||
|
|
* \cgalNamedParamsBegin
|
||
|
|
* \cgalParamBegin{vertex_point_map}
|
||
|
|
* the property map that contains the points associated to the vertices of `input`.
|
||
|
|
* If this parameter is omitted, an internal property map for `CGAL::vertex_point_t`
|
||
|
|
* should be available for the vertices of `input` \cgalParamEnd
|
||
|
|
* \cgalNamedParamsEnd
|
||
|
|
*
|
||
|
|
* * @param np_out an optional sequence of \ref pmp_namedparameters "Named Parameters" among the ones listed below
|
||
|
|
*
|
||
|
|
* \cgalNamedParamsBegin
|
||
|
|
* \cgalParamBegin{vertex_point_map}
|
||
|
|
* the property map that will contain the points associated to the vertices of `output`.
|
||
|
|
* If this parameter is omitted, an internal property map for `CGAL::vertex_point_t`
|
||
|
|
* should be available for the vertices of `output` \cgalParamEnd
|
||
|
|
* \cgalNamedParamsEnd
|
||
|
|
*/
|
||
|
|
template <class InputMesh,
|
||
|
|
class OutputMesh,
|
||
|
|
class NamedParameters1,
|
||
|
|
class NamedParameters2>
|
||
|
|
void extrude_mesh(const InputMesh& input,
|
||
|
|
OutputMesh& output,
|
||
|
|
#ifdef DOXYGEN_RUNNING
|
||
|
|
Vector_3 v,
|
||
|
|
#else
|
||
|
|
typename GetGeomTraits<OutputMesh, NamedParameters2>::type::Vector_3 v,
|
||
|
|
#endif
|
||
|
|
const NamedParameters1& np_in,
|
||
|
|
const NamedParameters2& np_out)
|
||
|
|
{
|
||
|
|
typedef typename GetVertexPointMap < OutputMesh, NamedParameters2>::type VPMap;
|
||
|
|
VPMap output_vpm = choose_param(get_param(np_out, internal_np::vertex_point),
|
||
|
|
get_property_map(vertex_point, output));
|
||
|
|
|
||
|
|
extrude_impl::Const_dist_translation<
|
||
|
|
typename GetVertexPointMap<OutputMesh, NamedParameters2>::type,
|
||
|
|
typename GetGeomTraits<OutputMesh, NamedParameters2>::type::Vector_3> bot(output_vpm,
|
||
|
|
v);
|
||
|
|
extrude_impl::Identity_functor top;
|
||
|
|
extrude_mesh(input, output, bot,top, np_in, np_out);
|
||
|
|
}
|
||
|
|
//convenience overload
|
||
|
|
template <class InputMesh,
|
||
|
|
class OutputMesh,
|
||
|
|
typename Vector>
|
||
|
|
void extrude_mesh(const InputMesh& input,
|
||
|
|
OutputMesh& output,
|
||
|
|
Vector dir)
|
||
|
|
{
|
||
|
|
extrude_mesh(input, output, dir,
|
||
|
|
parameters::all_default(),
|
||
|
|
parameters::all_default());
|
||
|
|
}
|
||
|
|
|
||
|
|
template <class InputMesh,
|
||
|
|
class OutputMesh,
|
||
|
|
typename Vector,
|
||
|
|
typename CGAL_PMP_NP_TEMPLATE_PARAMETERS>
|
||
|
|
void extrude_mesh(const InputMesh& input,
|
||
|
|
OutputMesh& output,
|
||
|
|
Vector dir,
|
||
|
|
const CGAL_PMP_NP_CLASS& np)
|
||
|
|
{
|
||
|
|
extrude_mesh(input, output, dir,
|
||
|
|
np,
|
||
|
|
parameters::all_default());
|
||
|
|
}
|
||
|
|
|
||
|
|
template <class InputMesh,
|
||
|
|
class OutputMesh,
|
||
|
|
class BottomFunctor,
|
||
|
|
class TopFunctor>
|
||
|
|
void extrude_mesh(const InputMesh& input,
|
||
|
|
OutputMesh& output,
|
||
|
|
const BottomFunctor& bot,
|
||
|
|
const TopFunctor& top)
|
||
|
|
{
|
||
|
|
extrude_mesh(input, output, bot, top,
|
||
|
|
parameters::all_default(), parameters::all_default());
|
||
|
|
}
|
||
|
|
|
||
|
|
}} //end CGAL::PMP
|
||
|
|
#endif //CGAL_POLYGON_MESH_PROCESSING_EXTRUDE_H
|