头文件
代码语言：javascript复制<AdditionalIncludeDirectories>C:Program Files (x86)CGALinclude;D:Cgalcmakeboost_1_82_0outputvc14.2-x64includeboost-1_82;D:CgalCGAL-5.5.2auxiliarygmpinclude;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>库
代码语言：javascript复制<AdditionalLibraryDirectories>D:Cgalcmakeboost_1_82_0outputvc14.2-x64lib;C:Program Files (x86)CGALlib;D:CgalCGAL-5.5.2auxiliarygmplib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
<AdditionalDependencies>D:CgalCGAL-5.5.2auxiliarygmpliblibgmp-10.lib;D:CgalCGAL-5.5.2auxiliarygmpliblibmpfr-4.lib;%(AdditionalDependencies)</AdditionalDependencies>这样就可以；了，5.5版本不用编译直接用 boost库需要编译一下，但是好像v142，v141可以用一个版本的文件 demo
代码语言：javascript复制#include <iostream>
#include <CGAL/Simple_cartesian.h>
typedef CGAL::Simple_cartesian<double> Kernel;
typedef Kernel::Point_2 Point_2;
typedef Kernel::Segment_2 Segment_2;
int main()
{
std::cout << "Hello World!n";
Point_2 p(1, 1), q(10, 10);
std::cout << "p = " << p << std::endl;
std::cout << "q = " << q.x() << " " << q.y() << std::endl;
std::cout << "sqdist(p,q) = "
<< CGAL::squared_distance(p, q) << std::endl;
Segment_2 s(p, q);
Point_2 m(5, 9);
std::cout << "m = " << m << std::endl;
std::cout << "sqdist(Segment_2(p,q), m) = "
<< CGAL::squared_distance(s, m) << std::endl;
std::cout << "p, q, and m ";
switch (CGAL::orientation(p, q, m)) {
case CGAL::COLLINEAR:
std::cout << "are collinearn";
break;
case CGAL::LEFT_TURN:
std::cout << "make a left turnn";
break;
case CGAL::RIGHT_TURN:
std::cout << "make a right turnn";
break;
}
std::cout << " midpoint(p,q) = " << CGAL::midpoint(p, q) << std::endl;
return 0;
}v140跳出以下错误
代码语言：javascript复制error C3249: “constexpr”函数的语句或子表达式非法
