mirror of https://github.com/CGAL/cgal
43 lines
1.4 KiB
C++
43 lines
1.4 KiB
C++
#include <CGAL/Polynomial.h>
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#include <CGAL/Polynomial_traits_d.h>
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#include <CGAL/Polynomial_type_generator.h>
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int main(){
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CGAL::set_pretty_mode(std::cout);
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typedef CGAL::Polynomial_type_generator<int,3>::Type Poly_3;
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typedef CGAL::Polynomial_traits_d<Poly_3> PT_3;
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//construction using shift
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Poly_3 x = PT_3::Shift()(Poly_3(1),1,0); // x_0^1
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Poly_3 y = PT_3::Shift()(Poly_3(1),1,1); // x_1^1
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Poly_3 z = PT_3::Shift()(Poly_3(1),1,2); // x_2^1
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Poly_3 F = x*y*y*z*z*z;
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std::cout << "The trivariate polynomial F: " << F << std::endl;
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std::cout << std::endl;
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PT_3::Swap swap;
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PT_3::Move move;
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PT_3::Permute permute;
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std::cout << "x and z swapped: "<< swap(F,0,2) // = x^3*y^2*z
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<< std::endl;
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std::cout << "x and y swapped: "<< swap(F,0,1) // = x^2*y*z^3
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<< std::endl << std::endl;
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std::cout << "x moved to outermost position : "
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<< move(F,0,2) // = x^2*y^3*z
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<< std::endl;
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std::cout << "Same as swap(swap(F,0,1),1,2) : "
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<< swap(swap(F,0,1),1,2) // = x^2*y^3*z
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<< std::endl;
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std::cout << "Same as the permutation (0,1,2)->(2,0,1): ";
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std::vector<int> perm;
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perm.push_back(2);perm.push_back(0);perm.push_back(1);
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std::cout << permute(F,perm.begin(),perm.end())// = x^2*y^3*z
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<< std::endl;
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}
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