102 lines
2.5 KiB
C++
102 lines
2.5 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2015 Danny Robson <danny@nerdcruft.net>
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*/
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#ifdef __UTIL_EXTENT_IPP
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#error
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#endif
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#define __UTIL_EXTENT_IPP
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#include <algorithm>
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#include <limits>
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///////////////////////////////////////////////////////////////////////////////
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template <size_t S, typename T>
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constexpr
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T
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util::extent<S,T>::diameter (void) const
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{
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return static_cast<T> (
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std::sqrt (
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std::accumulate (std::begin (this->data),
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std::end (this->data),
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T {0},
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[] (auto a, auto b) { return a + b * b; })
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)
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);
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}
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///////////////////////////////////////////////////////////////////////////////
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template <size_t S, typename T>
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constexpr
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T
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util::extent<S,T>::area (void) const
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{
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return std::accumulate (std::begin (this->data),
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std::end (this->data),
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T {1},
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std::multiplies<T> ());
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}
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///////////////////////////////////////////////////////////////////////////////
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template <size_t S, typename T>
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template <typename U>
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constexpr
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U
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util::extent<S,T>::aspect (void) const
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{
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return static_cast<U> (this->w) / this->h;
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}
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///////////////////////////////////////////////////////////////////////////////
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template <size_t S, typename T>
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template <typename U>
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bool
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util::extent<S,T>::includes (point<S,U> p) const
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{
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for (size_t i = 0; i < S; ++i)
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if (p[i] < 0 || static_cast<T> (p[i]) >= this->data[i])
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return false;
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return true;
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}
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///////////////////////////////////////////////////////////////////////////////
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template <size_t S, typename T>
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constexpr
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util::extent<S,T>
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util::extent<S,T>::max (void)
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{
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return extent<S,T> {
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std::numeric_limits<T>::max ()
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};
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}
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//-----------------------------------------------------------------------------
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template <size_t S, typename T>
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constexpr
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util::extent<S,T>
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util::extent<S,T>::min (void)
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{
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return extent<S,T> { 0 };
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}
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