mirror of https://github.com/CGAL/cgal
47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
/*! \file draw_polygon_with_holes_2.cpp
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*/
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#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
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#include <CGAL/Polygon_2.h>
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#include <CGAL/Polygon_with_holes_2.h>
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#include <CGAL/draw_polygon_with_holes_2.h>
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using K=CGAL::Exact_predicates_inexact_constructions_kernel;
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using Point_2=K::Point_2;
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using Polygon_2=CGAL::Polygon_2<K>;
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using Polygon_with_holes_2=CGAL::Polygon_with_holes_2<K>;
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Polygon_2 triangle(double x, double y)
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{ // Create a triangle (x, y)
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Polygon_2 P;
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P.push_back(Point_2(x, y));
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P.push_back(Point_2(x+0.5, y+1));
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P.push_back(Point_2(x+1, y));
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return P;
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}
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Polygon_2 rectangle(double l)
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{ // Create a rectangle with given side length.
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Polygon_2 P;
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P.push_back(Point_2(0, 0));
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P.push_back(Point_2(l, 0));
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P.push_back(Point_2(l, l));
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P.push_back(Point_2(0, l));
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return P;
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}
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int main()
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{
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// Create a large rectangle A, with 3 triangle holes
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Polygon_with_holes_2 A(rectangle(4));
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Polygon_2 H1(triangle(1, 1));
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Polygon_2 H2(triangle(2, 1));
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Polygon_2 H3(triangle(1.5, 2));
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A.add_hole(H1);
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A.add_hole(H2);
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A.add_hole(H3);
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CGAL::draw(A);
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return 0;
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}
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