55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
/*
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* This file is part of libgim.
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*
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* libgim is free software: you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* libgim is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with libgim. If not, see <http://www.gnu.org/licenses/>.
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*
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* Copyright 2015 Danny Robson <danny@nerdcruft.net>
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*/
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#ifndef __UTIL_BEZIER_HPP
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#define __UTIL_BEZIER_HPP
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#include "point.hpp"
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#include <iostream>
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namespace util {
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template <size_t S>
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class bezier {
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public:
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bezier (const util::point2f (&)[S+1]);
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point2f eval (float t) const;
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// Calculate the expanded polynomial coeffecients in terms of t
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std::array<vector2f,S+1>
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coeffs (void) const;
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size_t intersections (point2f from, point2f to) const;
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float distance (point2f) const;
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point2f& operator[] (size_t idx);
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const point2f& operator[] (size_t idx) const;
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private:
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point2f m_points[S+1];
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};
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template <size_t S>
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std::ostream& operator<< (std::ostream&, const bezier<S>&);
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}
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#endif
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