src/gallium/state_trackers/clover/core/geometry.hpp

   1 //
   2 // Copyright 2012 Francisco Jerez
   3 //
   4 // Permission is hereby granted, free of charge, to any person obtaining a
   5 // copy of this software and associated documentation files (the "Software"),
   6 // to deal in the Software without restriction, including without limitation
   7 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 // and/or sell copies of the Software, and to permit persons to whom the
   9 // Software is furnished to do so, subject to the following conditions:
  10 //
  11 // The above copyright notice and this permission notice shall be included in
  12 // all copies or substantial portions of the Software.
  13 //
  14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18 // OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19 // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20 // OTHER DEALINGS IN THE SOFTWARE.
  21 //
  22
  23 #ifndef _CORE_GEOMETRY_HPP_
  24 #define _CORE_GEOMETRY_HPP_
  25
  26 #include <array>
  27 #include <algorithm>
  28
  29 namespace clover {
  30    ///
  31    /// N-dimensional coordinate array.
  32    ///
  33    template<typename T, int N>
  34    class point {
  35    public:
  36       point() : a() {
  37       }
  38
  39       point(std::initializer_list<T> v) {
  40          auto it = std::copy(v.begin(), v.end(), a.begin());
  41          std::fill(it, a.end(), 0);
  42       }
  43
  44       point(const T *v) {
  45          std::copy(v, v + N, a.begin());
  46       }
  47
  48       T &operator[](int i) {
  49          return a[i];
  50       }
  51
  52       const T &operator[](int i) const {
  53          return a[i];
  54       }
  55
  56       point operator+(const point &p) const {
  57          point q;
  58          std::transform(a.begin(), a.end(), p.a.begin(),
  59                         q.a.begin(), std::plus<T>());
  60          return q;
  61       }
  62
  63       T operator()(const point &p) const {
  64          return std::inner_product(p.a.begin(), p.a.end(), a.begin(), 0);
  65       }
  66
  67    protected:
  68       std::array<T, N> a;
  69    };
  70 }
  71
  72 #endif