CGAL 无法识别类型
CGAL doesn't recognize type
对于我的论文项目，我依赖于一年前另一个学生编写的一堆 CGAL 代码。不幸的是，由于错误，我无法编译代码。这些错误可能是以前的学生没有遇到过的，所以它们可能与我的设置有关而不是代码本身，但我不知道直接原因是什么。
错误在文件 CCBSegmentCalculator.h 中。代码如下：
#pragma once
#include "bezier_arrangement.h"
//Circulates around a PL_Arrrangement CCB, visiting the points between the segments that make up the CCB
// (so smaller-scale than the build-in iterator that only visits the PL_Arrangement vertices)
// --- Could be used in more places than it is now, e.g., in the SVGHandler
class CCBSegmentCirculator
{
public:
CCBSegmentCirculator(PL_Arrangement::Ccb_halfedge_const_circulator ccbCirculator);
const CCBSegmentCirculator& next();
PL_Point operator*();
PL_Point get(); // same as operator*
bool operator==(const CCBSegmentCirculator &other) const;
private:
const PL_Arrangement::Ccb_halfedge_const_circulator halfedgesBegin;
PL_Arrangement::Ccb_halfedge_const_circulator halfedge;
//Depending on this boolean ...
bool forward;
//... we are either using these forward iterators ...
// -> in which case the 'current' point is segment.source
Polyline::Segment_const_iterator segment;
Polyline::Segment_const_iterator segmentEnd;
//... or these reverse iterators
// -> in which case the 'current' point is segmentReverse.target
Polyline::Segment_const_reverse_iterator segmentReverse;
Polyline::Segment_const_reverse_iterator segmentReverseEnd;
void initHalfedge();
};
文件"bezier_arrangement.h"具有以下代码：
#pragma once
#include <CGAL/Cartesian.h>
#include <CGAL/CORE_algebraic_number_traits.h>
#include <CGAL/Arr_Bezier_curve_traits_2.h>
#include <CGAL/Arrangement_2.h>
#include <CGAL/Arrangement_with_history_2.h>
#include <CGAL/Arr_extended_dcel.h>
#include <CGAL/Iso_rectangle_2.h>
#include <CGAL/Arr_walk_along_line_point_location.h>
#include <CGAL/Arr_observer.h>
//#include <CGAL/basic.h>
#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
#include <CGAL/Arr_segment_traits_2.h>
#include <CGAL/Arr_polyline_traits_2.h>
struct FaceData
{
FaceData ()
{
colored = false;
solved = false;
};
bool colored = false;
bool solved = false;
};
//// Bezier curve traits ////
typedef CGAL::CORE_algebraic_number_traits Nt_traits;
typedef Nt_traits::Rational NT;
typedef Nt_traits::Rational Rational;
typedef Nt_traits::Algebraic Algebraic;
//Simple_cartesian = for easier debugging, no ref counting, values directly in objects
typedef CGAL::Cartesian<Rational> Kernel;
typedef CGAL::Cartesian<Algebraic> Alg_kernel;
//typedef Kernel::Point_2 Rat_Point;
typedef CGAL::Arr_Bezier_curve_traits_2<Kernel, Alg_kernel, Nt_traits> Traits;
typedef Traits::Curve_2 Bezier;
typedef Traits::Point_2 Point;
typedef Kernel::Iso_rectangle_2 BoundingBox;
typedef CGAL::Arr_face_extended_dcel<Traits, FaceData> Dcel;
typedef CGAL::Arrangement_with_history_2<Traits, Dcel> Arrangement; //Not really used anymore, because of crashes/problems/bugs
//// Polyline traits ////
// Instantiate the traits class using a user-defined kernel
// and Segment_traits_2.
typedef CGAL::Exact_predicates_exact_constructions_kernel PL_Kernel;
typedef CGAL::Arr_segment_traits_2<PL_Kernel> Segment_traits;
typedef CGAL::Arr_polyline_traits_2<Segment_traits> PL_traits;
// Identical instantiation can be achieved using the default Kernel:
// typedef CGAL::Arr_polyline_traits_2<> Geom_traits_2;
typedef PL_traits::Point_2 PL_Point;
typedef PL_traits::Segment_2 Segment;
typedef PL_traits::Curve_2 Polyline;
typedef CGAL::Arr_extended_dcel<PL_traits, bool/*not used*/, double, FaceData> PL_Dcel;
typedef CGAL::Arrangement_with_history_2<PL_traits, PL_Dcel> PL_Arrangement; //This is now the only type of arrangement that we actually use
//Handles
typedef PL_Arrangement::Vertex_const_handle Vertex_handle;
typedef PL_Arrangement::Halfedge_const_handle Halfedge_handle;
typedef PL_Arrangement::Curve_const_handle Curve_handle;
//Point location
typedef CGAL::Arr_walk_along_line_point_location<PL_Arrangement> PointLocationAlg;
typedef CGAL::Arr_point_location_result<PL_Arrangement>::Type PointLocationResult;
//Less function to use for (vertex/halfedge/face) handle sets
template <class Handle> struct HandleLess
{
bool operator()(Handle a, Handle b)
{
return (a.ptr() - b.ptr() < 0);
}
};
typedef std::set<Vertex_handle, HandleLess<Vertex_handle>> VertexHandleSet;
//Arrangement observer that keeps the face colours correct
class FaceColorObserver : public CGAL::Arr_observer<PL_Arrangement>
{
private:
bool coloredBeforeMerge;
public:
FaceColorObserver(PL_Arrangement& arrangement) :
CGAL::Arr_observer<PL_Arrangement>(arrangement)
{}
virtual void after_split_face(Face_handle oldFace, Face_handle newFace, bool)
{
newFace->data().colored = oldFace->data().colored;
}
virtual void before_merge_face(Face_handle face1, Face_handle face2, Halfedge_handle)
{
//The assumption is that only same-color faces get merged
CGAL_precondition(face1->data().colored == face2->data().colored);
coloredBeforeMerge = face1->data().colored;// && face2->data().colored;
}
virtual void after_merge_face(Face_handle newFace)
{
newFace->data().colored = coloredBeforeMerge;
}
};
//Arrangement of line segments
typedef CGAL::Arrangement_2<Segment_traits> Seg_Arrangement;
我遇到的错误与 CGAL 认为定义的多段线类型没有成员 Segment_const_iterator 或根本无法正确识别该类型有关。我不确定，因为它被翻译成内部 CGAL 类型。我得到的错误是：
Error C2039 'Segment_const_iterator': is not a member of 'CGAL::internal::Polycurve_2<SubcurveType_2,PointType_2>' CurvedNonograms c:\users\demeessias\documents. studie[=12=].masterthesis\curvednonograms-code\curvednonograms\curvednonograms\ccbsegmentcirculator.h 39
重复包含 segment、segmentEnd、segmentReverse 和 segmentReverseEnd.
定义的行
根据 the documentation，Curve_2 应该有 Segment_const_iterator 的定义。
再一次，错误可能不在代码本身，而是在我的 CGAL 的 build/linking 某处。重新安装 CGAL 没有帮助，我很确定我已经在相关的地方链接了它，但是构建软件的这一部分并不是我的强项，所以我可能不了解所有相关的地方。
编辑：输出中给出的第一个错误是：
c:\users\demeessias\documents. studie[=13=].masterthesis\curvednonograms-code\curvednonograms\curvednonograms\svghandler.cpp(94): error C2039: 'begin_segments': is not a member of 'CGAL::_Curve_data_ex<CGAL::internal::X_monotone_polycurve_2<CGAL::Arr_segment_2<Kernel_>,CGAL::Point_2<Kernel_>>,CGAL::_Unique_list<Data_>>' 2> with 2> [ 2> Kernel_=PL_Kernel, 2> Data_=CGAL::internal::Polycurve_2<CGAL::Arr_segment_2<PL_Kernel>,CGAL::Point_2<CGAL::Epeck>> * 2> ]
这与上面显示的代码文件不同，因为代码中有更多错误，但所有错误似乎都源于类似的问题。还有一些形式的警告：
2>c:\program files (x86)\microsoft visual studio 14.0\vc\include\xutility(313): warning C4503: '__LINE__Var': decorated name length exceeded, name was truncated
将 CCBSegmentCalculator.h 添加到不同的项目以仅编译它会出现以下错误：
Severity Code Description Project File Line Suppression State
Error (active) class "CGAL::internal::Polycurve_2<CGAL::Arr_segment_2<CGAL::Exact_predicates_exact_constructions_kernel>, CGAL::Point_2<CGAL::Epeck>>" has no member "Segment_const_iterator" CurvedNonogramsGenerator c:\Users\DeMeessias\Documents. Studie[=15=].MasterThesis\Code\CurvedNonogramsGenerator\CurvedNonogramsGenerator\CCBSegmentCirculator.h 28
Error (active) class "CGAL::internal::Polycurve_2<CGAL::Arr_segment_2<CGAL::Exact_predicates_exact_constructions_kernel>, CGAL::Point_2<CGAL::Epeck>>" has no member "Segment_const_iterator" CurvedNonogramsGenerator c:\Users\DeMeessias\Documents. Studie[=15=].MasterThesis\Code\CurvedNonogramsGenerator\CurvedNonogramsGenerator\CCBSegmentCirculator.h 29
Error (active) class "CGAL::internal::Polycurve_2<CGAL::Arr_segment_2<CGAL::Exact_predicates_exact_constructions_kernel>, CGAL::Point_2<CGAL::Epeck>>" has no member "Segment_const_reverse_iterator" CurvedNonogramsGenerator c:\Users\DeMeessias\Documents. Studie[=15=].MasterThesis\Code\CurvedNonogramsGenerator\CurvedNonogramsGenerator\CCBSegmentCirculator.h 32
Error (active) class "CGAL::internal::Polycurve_2<CGAL::Arr_segment_2<CGAL::Exact_predicates_exact_constructions_kernel>, CGAL::Point_2<CGAL::Epeck>>" has no member "Segment_const_reverse_iterator" CurvedNonogramsGenerator c:\Users\DeMeessias\Documents. Studie[=15=].MasterThesis\Code\CurvedNonogramsGenerator\CurvedNonogramsGenerator\CCBSegmentCirculator.h 33
Error C2039 'Segment_const_iterator': is not a member of 'CGAL::internal::Polycurve_2<SubcurveType_2,PointType_2>' CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 28
Error C3646 'segment': unknown override specifier CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 28
Error C4430 missing type specifier - int assumed. Note: C++ does not support default-int CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 28
Error C2039 'Segment_const_iterator': is not a member of 'CGAL::internal::Polycurve_2<SubcurveType_2,PointType_2>' CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 29
Error C3646 'segmentEnd': unknown override specifier CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 29
Error C4430 missing type specifier - int assumed. Note: C++ does not support default-int CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 29
Error C2039 'Segment_const_reverse_iterator': is not a member of 'CGAL::internal::Polycurve_2<SubcurveType_2,PointType_2>' CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 32
Error C3646 'segmentReverse': unknown override specifier CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 32
Error C4430 missing type specifier - int assumed. Note: C++ does not support default-int CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 32
Error C2039 'Segment_const_reverse_iterator': is not a member of 'CGAL::internal::Polycurve_2<SubcurveType_2,PointType_2>' CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 33
Error C3646 'segmentReverseEnd': unknown override specifier CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 33
Error C4430 missing type specifier - int assumed. Note: C++ does not support default-int CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 33
将Segment_const_iterator和Segment_const_reverse_iterator分别替换为Subcurve_const_iterator和Subcurve_const_reverse_iterator。
您可能需要分别用 subcurves_begin() 和 subcurves_end() 替换 begin_segments() 和 end_segments()。
在（我认为）4.2 版中，我们对代码进行了重大更改。其中一项更改是扩展了 arr_polyline_traits_2 特征 class 支持的折线的定义。现在，多段线可以是不一定是线段的线性曲线链。例如，它可以有一条或两条射线作为第一条和最后一条，甚至可以是一条线。 （官方的说法是，一段折线可以是任何可以由两点构造的曲线）。
对于我的论文项目，我依赖于一年前另一个学生编写的一堆 CGAL 代码。不幸的是，由于错误，我无法编译代码。这些错误可能是以前的学生没有遇到过的，所以它们可能与我的设置有关而不是代码本身，但我不知道直接原因是什么。
错误在文件 CCBSegmentCalculator.h 中。代码如下：
#pragma once
#include "bezier_arrangement.h"
//Circulates around a PL_Arrrangement CCB, visiting the points between the segments that make up the CCB
// (so smaller-scale than the build-in iterator that only visits the PL_Arrangement vertices)
// --- Could be used in more places than it is now, e.g., in the SVGHandler
class CCBSegmentCirculator
{
public:
CCBSegmentCirculator(PL_Arrangement::Ccb_halfedge_const_circulator ccbCirculator);
const CCBSegmentCirculator& next();
PL_Point operator*();
PL_Point get(); // same as operator*
bool operator==(const CCBSegmentCirculator &other) const;
private:
const PL_Arrangement::Ccb_halfedge_const_circulator halfedgesBegin;
PL_Arrangement::Ccb_halfedge_const_circulator halfedge;
//Depending on this boolean ...
bool forward;
//... we are either using these forward iterators ...
// -> in which case the 'current' point is segment.source
Polyline::Segment_const_iterator segment;
Polyline::Segment_const_iterator segmentEnd;
//... or these reverse iterators
// -> in which case the 'current' point is segmentReverse.target
Polyline::Segment_const_reverse_iterator segmentReverse;
Polyline::Segment_const_reverse_iterator segmentReverseEnd;
void initHalfedge();
};
文件"bezier_arrangement.h"具有以下代码：
#pragma once
#include <CGAL/Cartesian.h>
#include <CGAL/CORE_algebraic_number_traits.h>
#include <CGAL/Arr_Bezier_curve_traits_2.h>
#include <CGAL/Arrangement_2.h>
#include <CGAL/Arrangement_with_history_2.h>
#include <CGAL/Arr_extended_dcel.h>
#include <CGAL/Iso_rectangle_2.h>
#include <CGAL/Arr_walk_along_line_point_location.h>
#include <CGAL/Arr_observer.h>
//#include <CGAL/basic.h>
#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
#include <CGAL/Arr_segment_traits_2.h>
#include <CGAL/Arr_polyline_traits_2.h>
struct FaceData
{
FaceData ()
{
colored = false;
solved = false;
};
bool colored = false;
bool solved = false;
};
//// Bezier curve traits ////
typedef CGAL::CORE_algebraic_number_traits Nt_traits;
typedef Nt_traits::Rational NT;
typedef Nt_traits::Rational Rational;
typedef Nt_traits::Algebraic Algebraic;
//Simple_cartesian = for easier debugging, no ref counting, values directly in objects
typedef CGAL::Cartesian<Rational> Kernel;
typedef CGAL::Cartesian<Algebraic> Alg_kernel;
//typedef Kernel::Point_2 Rat_Point;
typedef CGAL::Arr_Bezier_curve_traits_2<Kernel, Alg_kernel, Nt_traits> Traits;
typedef Traits::Curve_2 Bezier;
typedef Traits::Point_2 Point;
typedef Kernel::Iso_rectangle_2 BoundingBox;
typedef CGAL::Arr_face_extended_dcel<Traits, FaceData> Dcel;
typedef CGAL::Arrangement_with_history_2<Traits, Dcel> Arrangement; //Not really used anymore, because of crashes/problems/bugs
//// Polyline traits ////
// Instantiate the traits class using a user-defined kernel
// and Segment_traits_2.
typedef CGAL::Exact_predicates_exact_constructions_kernel PL_Kernel;
typedef CGAL::Arr_segment_traits_2<PL_Kernel> Segment_traits;
typedef CGAL::Arr_polyline_traits_2<Segment_traits> PL_traits;
// Identical instantiation can be achieved using the default Kernel:
// typedef CGAL::Arr_polyline_traits_2<> Geom_traits_2;
typedef PL_traits::Point_2 PL_Point;
typedef PL_traits::Segment_2 Segment;
typedef PL_traits::Curve_2 Polyline;
typedef CGAL::Arr_extended_dcel<PL_traits, bool/*not used*/, double, FaceData> PL_Dcel;
typedef CGAL::Arrangement_with_history_2<PL_traits, PL_Dcel> PL_Arrangement; //This is now the only type of arrangement that we actually use
//Handles
typedef PL_Arrangement::Vertex_const_handle Vertex_handle;
typedef PL_Arrangement::Halfedge_const_handle Halfedge_handle;
typedef PL_Arrangement::Curve_const_handle Curve_handle;
//Point location
typedef CGAL::Arr_walk_along_line_point_location<PL_Arrangement> PointLocationAlg;
typedef CGAL::Arr_point_location_result<PL_Arrangement>::Type PointLocationResult;
//Less function to use for (vertex/halfedge/face) handle sets
template <class Handle> struct HandleLess
{
bool operator()(Handle a, Handle b)
{
return (a.ptr() - b.ptr() < 0);
}
};
typedef std::set<Vertex_handle, HandleLess<Vertex_handle>> VertexHandleSet;
//Arrangement observer that keeps the face colours correct
class FaceColorObserver : public CGAL::Arr_observer<PL_Arrangement>
{
private:
bool coloredBeforeMerge;
public:
FaceColorObserver(PL_Arrangement& arrangement) :
CGAL::Arr_observer<PL_Arrangement>(arrangement)
{}
virtual void after_split_face(Face_handle oldFace, Face_handle newFace, bool)
{
newFace->data().colored = oldFace->data().colored;
}
virtual void before_merge_face(Face_handle face1, Face_handle face2, Halfedge_handle)
{
//The assumption is that only same-color faces get merged
CGAL_precondition(face1->data().colored == face2->data().colored);
coloredBeforeMerge = face1->data().colored;// && face2->data().colored;
}
virtual void after_merge_face(Face_handle newFace)
{
newFace->data().colored = coloredBeforeMerge;
}
};
//Arrangement of line segments
typedef CGAL::Arrangement_2<Segment_traits> Seg_Arrangement;
我遇到的错误与 CGAL 认为定义的多段线类型没有成员 Segment_const_iterator 或根本无法正确识别该类型有关。我不确定，因为它被翻译成内部 CGAL 类型。我得到的错误是：
Error C2039 'Segment_const_iterator': is not a member of 'CGAL::internal::Polycurve_2<SubcurveType_2,PointType_2>' CurvedNonograms c:\users\demeessias\documents. studie[=12=].masterthesis\curvednonograms-code\curvednonograms\curvednonograms\ccbsegmentcirculator.h 39
重复包含 segment、segmentEnd、segmentReverse 和 segmentReverseEnd.
根据 the documentation，Curve_2 应该有 Segment_const_iterator 的定义。
再一次，错误可能不在代码本身，而是在我的 CGAL 的 build/linking 某处。重新安装 CGAL 没有帮助，我很确定我已经在相关的地方链接了它，但是构建软件的这一部分并不是我的强项，所以我可能不了解所有相关的地方。
编辑：输出中给出的第一个错误是：
c:\users\demeessias\documents. studie[=13=].masterthesis\curvednonograms-code\curvednonograms\curvednonograms\svghandler.cpp(94): error C2039: 'begin_segments': is not a member of 'CGAL::_Curve_data_ex<CGAL::internal::X_monotone_polycurve_2<CGAL::Arr_segment_2<Kernel_>,CGAL::Point_2<Kernel_>>,CGAL::_Unique_list<Data_>>' 2> with 2> [ 2> Kernel_=PL_Kernel, 2> Data_=CGAL::internal::Polycurve_2<CGAL::Arr_segment_2<PL_Kernel>,CGAL::Point_2<CGAL::Epeck>> * 2> ]
这与上面显示的代码文件不同，因为代码中有更多错误，但所有错误似乎都源于类似的问题。还有一些形式的警告：
2>c:\program files (x86)\microsoft visual studio 14.0\vc\include\xutility(313): warning C4503: '__LINE__Var': decorated name length exceeded, name was truncated
将 CCBSegmentCalculator.h 添加到不同的项目以仅编译它会出现以下错误：
Severity Code Description Project File Line Suppression State
Error (active) class "CGAL::internal::Polycurve_2<CGAL::Arr_segment_2<CGAL::Exact_predicates_exact_constructions_kernel>, CGAL::Point_2<CGAL::Epeck>>" has no member "Segment_const_iterator" CurvedNonogramsGenerator c:\Users\DeMeessias\Documents. Studie[=15=].MasterThesis\Code\CurvedNonogramsGenerator\CurvedNonogramsGenerator\CCBSegmentCirculator.h 28
Error (active) class "CGAL::internal::Polycurve_2<CGAL::Arr_segment_2<CGAL::Exact_predicates_exact_constructions_kernel>, CGAL::Point_2<CGAL::Epeck>>" has no member "Segment_const_iterator" CurvedNonogramsGenerator c:\Users\DeMeessias\Documents. Studie[=15=].MasterThesis\Code\CurvedNonogramsGenerator\CurvedNonogramsGenerator\CCBSegmentCirculator.h 29
Error (active) class "CGAL::internal::Polycurve_2<CGAL::Arr_segment_2<CGAL::Exact_predicates_exact_constructions_kernel>, CGAL::Point_2<CGAL::Epeck>>" has no member "Segment_const_reverse_iterator" CurvedNonogramsGenerator c:\Users\DeMeessias\Documents. Studie[=15=].MasterThesis\Code\CurvedNonogramsGenerator\CurvedNonogramsGenerator\CCBSegmentCirculator.h 32
Error (active) class "CGAL::internal::Polycurve_2<CGAL::Arr_segment_2<CGAL::Exact_predicates_exact_constructions_kernel>, CGAL::Point_2<CGAL::Epeck>>" has no member "Segment_const_reverse_iterator" CurvedNonogramsGenerator c:\Users\DeMeessias\Documents. Studie[=15=].MasterThesis\Code\CurvedNonogramsGenerator\CurvedNonogramsGenerator\CCBSegmentCirculator.h 33
Error C2039 'Segment_const_iterator': is not a member of 'CGAL::internal::Polycurve_2<SubcurveType_2,PointType_2>' CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 28
Error C3646 'segment': unknown override specifier CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 28
Error C4430 missing type specifier - int assumed. Note: C++ does not support default-int CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 28
Error C2039 'Segment_const_iterator': is not a member of 'CGAL::internal::Polycurve_2<SubcurveType_2,PointType_2>' CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 29
Error C3646 'segmentEnd': unknown override specifier CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 29
Error C4430 missing type specifier - int assumed. Note: C++ does not support default-int CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 29
Error C2039 'Segment_const_reverse_iterator': is not a member of 'CGAL::internal::Polycurve_2<SubcurveType_2,PointType_2>' CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 32
Error C3646 'segmentReverse': unknown override specifier CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 32
Error C4430 missing type specifier - int assumed. Note: C++ does not support default-int CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 32
Error C2039 'Segment_const_reverse_iterator': is not a member of 'CGAL::internal::Polycurve_2<SubcurveType_2,PointType_2>' CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 33
Error C3646 'segmentReverseEnd': unknown override specifier CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 33
Error C4430 missing type specifier - int assumed. Note: C++ does not support default-int CurvedNonogramsGenerator c:\users\demeessias\documents. studie[=15=].masterthesis\code\curvednonogramsgenerator\curvednonogramsgenerator\ccbsegmentcirculator.h 33
将Segment_const_iterator和Segment_const_reverse_iterator分别替换为Subcurve_const_iterator和Subcurve_const_reverse_iterator。
您可能需要分别用 subcurves_begin() 和 subcurves_end() 替换 begin_segments() 和 end_segments()。
在（我认为）4.2 版中，我们对代码进行了重大更改。其中一项更改是扩展了 arr_polyline_traits_2 特征 class 支持的折线的定义。现在，多段线可以是不一定是线段的线性曲线链。例如，它可以有一条或两条射线作为第一条和最后一条，甚至可以是一条线。 （官方的说法是，一段折线可以是任何可以由两点构造的曲线）。