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#ifndef slic3r_ExPolygonCollection_hpp_
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#define slic3r_ExPolygonCollection_hpp_
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#include "ExPolygon.hpp"
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class ExPolygonCollection
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ExPolygons expolygons;
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operator Polygons() const;
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void scale(double factor);
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void translate(double x, double y);
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void rotate(double angle, const Point ¢er);
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bool contains_point(const Point &point) const;
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void simplify(double tolerance);
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void convex_hull(Polygon* hull) const;