177 lines
4.8 KiB
C++
177 lines
4.8 KiB
C++
/*
|
|
* 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 2010-2015 Danny Robson <danny@nerdcruft.net>
|
|
*/
|
|
|
|
#include "extent.hpp"
|
|
|
|
#include "debug.hpp"
|
|
#include "maths.hpp"
|
|
|
|
#include <cmath>
|
|
|
|
using util::extent;
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
template <size_t S, typename T>
|
|
extent<S,T>::extent (vector<S,T> _v)
|
|
{
|
|
std::transform (std::begin (_v),
|
|
std::end (_v),
|
|
this->begin (),
|
|
[] (auto i) {
|
|
// using std::abs gives unsigned abs warnings under clang. this tricks
|
|
// it sufficiently to quiet the warnings.
|
|
return i < 0 ? -i : i;
|
|
});
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
template <size_t S, typename T>
|
|
T
|
|
extent<S,T>::diameter (void) const
|
|
{
|
|
return static_cast<T> (
|
|
std::sqrt (
|
|
std::accumulate (std::begin (this->data),
|
|
std::end (this->data),
|
|
T {0},
|
|
[] (auto a, auto b) { return a + b * b; })
|
|
)
|
|
);
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
template <size_t S, typename T>
|
|
T
|
|
extent<S,T>::area (void) const
|
|
{
|
|
return std::accumulate (std::begin (this->data),
|
|
std::end (this->data),
|
|
T {1},
|
|
std::multiplies<T> ());
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
template <size_t S, typename T>
|
|
extent<S,T>
|
|
extent<S,T>::expanded (util::vector<S,T> mag) const
|
|
{
|
|
return *this + mag;
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
template <size_t S, typename T>
|
|
extent<S,T>
|
|
extent<S,T>::expanded (T t) const
|
|
{
|
|
return *this + util::vector<S,T> {t};
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
template <size_t S, typename T>
|
|
extent<S,T>
|
|
extent<S,T>::contracted (vector<S,T> t) const
|
|
{
|
|
return *this - t;
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
template <size_t S, typename T>
|
|
extent<S,T>
|
|
extent<S,T>::contracted (T t) const
|
|
{
|
|
return *this - vector<S,T> {t};
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
template <size_t S, typename T>
|
|
bool
|
|
extent<S,T>::empty (void) const
|
|
{
|
|
return almost_equal (area(), 0);
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
template <size_t S, typename T>
|
|
const extent<S,T> extent<S,T>::MIN { 0 };
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
template <size_t S, typename T>
|
|
const extent<S,T> extent<S,T>::MAX {
|
|
std::numeric_limits<T>::max ()
|
|
};
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
namespace debug {
|
|
template <size_t S, typename T>
|
|
struct validator<extent,S,T> {
|
|
static bool is_valid (const extent<S,T> &e)
|
|
{
|
|
return std::all_of (std::begin (e.data),
|
|
std::end (e.data),
|
|
[] (auto i) { return i >= 0; });
|
|
}
|
|
};
|
|
}
|
|
|
|
template bool debug::valid (const extent<2,float>&);
|
|
template bool debug::valid (const extent<2,double>&);
|
|
template bool debug::valid (const extent<2,uint16_t>&);
|
|
template bool debug::valid (const extent<2,uint32_t>&);
|
|
template bool debug::valid (const extent<2,uint64_t>&);
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
template <size_t S, typename T>
|
|
std::ostream&
|
|
util::operator<< (std::ostream &os, extent<S,T> e)
|
|
{
|
|
os << "[";
|
|
std::copy (std::begin (e.data),
|
|
std::end (e.data),
|
|
std::ostream_iterator<T> (os, ", "));
|
|
os << "]";
|
|
return os;
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
namespace util {
|
|
#define INSTANTIATE_S_T(S,T) \
|
|
template struct extent<S,T>; \
|
|
template std::ostream& operator<< (std::ostream&, extent<S,T>);
|
|
|
|
#define INSTANTIATE(T) \
|
|
INSTANTIATE_S_T(2,T) \
|
|
INSTANTIATE_S_T(3,T)
|
|
|
|
INSTANTIATE(uint16_t)
|
|
INSTANTIATE(uint32_t)
|
|
INSTANTIATE(uint64_t)
|
|
INSTANTIATE(float)
|
|
INSTANTIATE(double)
|
|
}
|