(C++) BoostGeometryExample4

 

 

Boost.Geometry example 4: CalcPlane: determine the plane passing through three point is a Boost.Geometry example.

 

CalcCrossProduct and CalcPlane are maintained in CppGeometry. See CppGeometry for the heavily used, debugged and tested versions of CalcCrossProduct and CalcPlane.

Technical facts

 

Application type(s)

• Desktop application

Operating system(s) or programming environment(s)

• Lubuntu 15.04 (vivid)

IDE(s):

• Qt Creator 3.1.1

Project type:

• GUI application

C++ standard:

• C++11

Compiler(s):

• G++ 4.9.2

Libraries used:

• Qt: version 5.4.1 (32 bit)
• STL: GNU ISO C++ Library, version 4.9.2

 

 

 

 

 

Qt project file: ./CppBoostGeometryExample4/CppBoostGeometryExample4.pro

 

---

exists(../../ConsoleApplication.pri) {   include(../../ConsoleApplication.pri) } !exists(../../ConsoleApplication.pri) {   QT += core   QT += gui   greaterThan(QT_MAJOR_VERSION, 4): QT += widgets   CONFIG   += console   CONFIG   -= app_bundle   TEMPLATE = app   CONFIG(release, debug|release) {     DEFINES += NDEBUG NTRACE_BILDERBIKKEL   }   QMAKE_CXXFLAGS += -std=c++11 -Wall -Wextra -Weffc++   unix {     QMAKE_CXXFLAGS += -Werror   } } exists(../../Libraries/Boost.pri) {   include(../../Libraries/Boost.pri) } !exists(../../Libraries/Boost.pri) {   win32 {     INCLUDEPATH += \       ../../Libraries/boost_1_55_0   } } SOURCES += main.cpp

 

 

 

 

 

./CppBoostGeometryExample4/main.cpp

 

---

#include <cassert> #include <functional> #include <iostream> #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Weffc++" #pragma GCC diagnostic ignored "-Wunused-local-typedefs" #pragma GCC diagnostic ignored "-Wunused-variable" #include <boost/geometry.hpp> #include <boost/geometry/geometries/point_xy.hpp> #include <boost/geometry/geometries/point.hpp> #pragma GCC diagnostic pop typedef boost::geometry::model::point<int,3,boost::geometry::cs::cartesian> Point3D; std::function<bool(const Point3D& lhs, const Point3D& rhs)> OrderByX() noexcept {   return [](const Point3D& lhs, const Point3D& rhs)   {     using boost::geometry::get;     if (get<0>(lhs) < get<0>(rhs)) return true;     if (get<0>(lhs) > get<0>(rhs)) return false;     if (get<1>(lhs) < get<1>(rhs)) return true;     if (get<1>(lhs) > get<1>(rhs)) return false;     return get<2>(lhs) < get<2>(rhs);   }; } std::function<bool(const Point3D& lhs, const Point3D& rhs)> OrderByZ() noexcept {   return [](const Point3D& lhs, const Point3D& rhs)   {     using boost::geometry::get;     if (get<2>(lhs) < get<2>(rhs)) return true;     if (get<2>(lhs) > get<2>(rhs)) return false;     if (get<1>(lhs) < get<1>(rhs)) return true;     if (get<1>(lhs) > get<1>(rhs)) return false;     return get<0>(lhs) < get<0>(rhs);   }; } std::ostream& operator<<(std::ostream& os, const Point3D& p) {   using boost::geometry::get;   os << "("  << get<0>(p) << "," << get<1>(p) << "," << get<2>(p) << ")";   return os; } int main() {   std::vector<Point3D> v {     Point3D(0,0,0),     Point3D(0,0,1),     Point3D(0,1,0),     Point3D(0,1,1),     Point3D(1,0,0),     Point3D(1,0,1),     Point3D(1,1,0),     Point3D(1,1,1)   };   std::random_shuffle(v.begin(),v.end());   std::cout << "Random" << '\n';   for (const auto p:v) { std::cout << p << '\n'; }   std::sort(v.begin(),v.end(),OrderByX());   std::cout << "Sorted by X-Y-Z" << '\n';   for (const auto p:v) { std::cout << p << '\n'; }   std::sort(v.begin(),v.end(),OrderByZ());   std::cout << "Sorted by Z-Y-X" << '\n';   for (const auto p:v) { std::cout << p << '\n'; } } /* Screen output Random (1,0,0) (0,0,1) (1,1,0) (0,1,0) (0,0,0) (1,0,1) (1,1,1) (0,1,1) Sorted by X-Y-Z (0,0,0) (0,0,1) (0,1,0) (0,1,1) (1,0,0) (1,0,1) (1,1,0) (1,1,1) Sorted by Z-Y-X (0,0,0) (1,0,0) (0,1,0) (1,1,0) (0,0,1) (1,0,1) (0,1,1) (1,1,1) Press <RETURN> to close this window... */