libcruft-util/geom/cylinder.cpp

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/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2015 Danny Robson <danny@nerdcruft.net>
*/
#include "cylinder.hpp"
using util::geom::cylinder;
///////////////////////////////////////////////////////////////////////////////
template <size_t S, typename T>
bool
cylinder<S,T>::includes (util::point<S,T> p_) const
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{
auto p10 = p1 - p0;
auto p_0 = p_ - p0;
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auto l = dot (p10, p_0);
if (l < 0 || l > norm2 (p10))
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return false;
auto d = dot (p10, p10) - l * l * norm2 (p10);
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if (d > radius * radius)
return false;
return true; // d
}
///////////////////////////////////////////////////////////////////////////////
template struct util::geom::cylinder<2,float>;
template struct util::geom::cylinder<3,float>;