nerdcruft/libcruft-util
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coord: pass client class to coord base

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allows common typesafe implementation of cast and redim
This commit is contained in:
Danny Robson 2015-04-09 17:47:35 +10:00
parent 9f6c17d6cf
commit 5428c93b9a
5 changed files with 13 additions and 11 deletions
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4
colour.hpp
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@ -29,8 +29,8 @@
namespace util {
/// An RGBA colour POD type.
template <typename T>
struct colour : public coord::base<4,T,coord::rgba> {
using coord::base<4,T,coord::rgba>::base;
struct colour : public coord::base<4,T,colour,coord::rgba> {
using coord::base<4,T,util::colour,coord::rgba>::base;
static const colour WHITE;
static const colour BLACK;

7
coord/base.hpp
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@ -27,7 +27,7 @@
namespace util { namespace coord {
/////////////////////////////////////////////////////////////////////////
template <size_t S, typename T, typename ...tags>
template <size_t S, typename T, template <size_t, typename> class KLASS, typename ...tags>
struct base : public init <S,T,tags...> {
static_assert (S > 0, "coord dimensions must be strictly positive");
@ -44,8 +44,8 @@ namespace util { namespace coord {
explicit base (T v)
{ std::fill (std::begin (this->data), std::end (this->data), v); }
base (const base<S,T,tags...> &rhs) = default;
base& operator= (const base<S,T,tags...> &rhs) = default;
base (const base<S,T,KLASS,tags...> &rhs) = default;
base& operator= (const base<S,T,KLASS,tags...> &rhs) = default;
// element accessors
T& operator[] (size_t i) { return this->data[i]; }
@ -57,6 +57,7 @@ namespace util { namespace coord {
T* begin (void) { return std::begin (this->data); }
T* end (void) { return std::end (this->data); }
///////////////////////////////////////////////////////////////////////
// conversions
template <template <size_t, typename> class K>
K<S,T> as (void) const

4
extent.hpp
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@ -30,9 +30,9 @@ namespace util {
* A pure two-dimensional size, without positioning
*/
template <size_t S, typename T>
struct extent : public coord::base<S,T,coord::whd>
struct extent : public coord::base<S,T,extent,coord::whd>
{
using coord::base<S,T,coord::whd>::base;
using coord::base<S,T,util::extent,coord::whd>::base;
extent () = default;
extent (vector<S,T>);

4
point.hpp
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@ -32,9 +32,9 @@
namespace util {
/// An n-dimensional position in space.
template <size_t S, typename T>
struct point : public coord::base<S,T,coord::xyzw>
struct point : public coord::base<S,T,point,coord::xyzw>
{
using coord::base<S,T,coord::xyzw>::base;
using coord::base<S,T,util::point,coord::xyzw>::base;
// point operators
template <typename U> typename std::common_type<T,U>::type distance (const point<S,U> &) const;

5
vector.hpp
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@ -29,8 +29,9 @@
namespace util {
template <size_t S, typename T>
struct vector : public coord::base<S,T,coord::xyzw,coord::stpq> {
using coord::base<S,T,coord::xyzw,coord::stpq>::base;
struct vector : public coord::base<S,T,vector,coord::xyzw,coord::stpq>
{
using coord::base<S,T,util::vector,coord::xyzw,coord::stpq>::base;
bool is_zero (void) const;