libcruft-util/point.cpp

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/*
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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
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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
* 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.
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*
* Copyright 2011 Danny Robson <danny@nerdcruft.net>
*/
#include "point.hpp"
#include "debug.hpp"
#include "maths.hpp"
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#include <cmath>
#include <cstdlib>
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using util::point;
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///////////////////////////////////////////////////////////////////////////////
template <size_t S, typename T>
util::vector<S,T>
util::point<S,T>::to (point<S,T> rhs) const
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{
util::vector<S,T> out;
for (size_t i = 0; i < S; ++i)
out.data[i] = rhs.data[i] - this->data[i];
return out;
}
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//-----------------------------------------------------------------------------
template <size_t S, typename T>
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util::vector<S,T>
util::point<S,T>::from (point<S,T> rhs) const
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{
util::vector<S,T> out;
for (size_t i = 0; i < S; ++i)
out.data[i] = this->data[i] - rhs.data[i];
return out;
}
///////////////////////////////////////////////////////////////////////////////
template <size_t S, typename T>
void
util::point<S,T>::sanity (void) const
{
CHECK (std::all_of (this->begin (),
this->end (),
[] (auto i) { return !std::isnan (i); }));
}
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//-----------------------------------------------------------------------------
template <size_t S, typename T>
const util::point<S,T> util::point<S,T>::ORIGIN (T {0});
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//-----------------------------------------------------------------------------
template <size_t S, typename T>
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std::ostream&
util::operator<< (std::ostream &os, util::point<S,T> p) {
os << "point" << S << "(";
os << p.data[0];
for (size_t i = 1; i < S; ++i)
os << ", " << p.data[i];
os << ")";
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return os;
}
//-----------------------------------------------------------------------------
#define INSTANTIATE_S_T(S,T) \
template struct util::point<S,T>; \
template std::ostream& util::operator<< (std::ostream &os, util::point<S,T>); \
#define INSTANTIATE(T) \
INSTANTIATE_S_T(1,T) \
INSTANTIATE_S_T(2,T) \
INSTANTIATE_S_T(3,T) \
INSTANTIATE_S_T(4,T)
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INSTANTIATE(int16_t)
INSTANTIATE(uint16_t)
INSTANTIATE(int32_t)
INSTANTIATE(uint32_t)
INSTANTIATE(int64_t)
INSTANTIATE(uint64_t)
INSTANTIATE(float)
INSTANTIATE(double)