nerdcruft/libcruft-util
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colour: add generic ostream operators

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This commit is contained in:
Danny Robson 2015-04-09 20:44:54 +10:00
parent 7c33efda62
commit 0d1fb0147e
2 changed files with 22 additions and 10 deletions
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25
colour.cpp
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@ -21,6 +21,7 @@
#include "range.hpp"
#include "random.hpp"
#include "stream.hpp"
//-----------------------------------------------------------------------------
@ -87,15 +88,25 @@ namespace util {
//-----------------------------------------------------------------------------
template <size_t S, typename T>
std::ostream&
util::operator<< (std::ostream &os, const util::colour4f &c) {
os << "colour(" << c.r << ", " << c.g << ", " << c.b << ", " << c.a << ")";
util::operator<< (std::ostream &os, util::colour<S,T> c) {
os << "colour(";
for (size_t i = 0; i < S - 1; ++i)
os << stream::numeric<T> (c[i]) << ", ";
os << stream::numeric<T> (c[S-1]) << ")";
return os;
}
//-----------------------------------------------------------------------------
template struct util::colour<3,float>;
template struct util::colour<3,double>;
template struct util::colour<4,float>;
template struct util::colour<4,double>;
#define INSTANTIATE_S_T(S,T) \
template struct util::colour<S,T>; \
template std::ostream& util::operator<< (std::ostream&, util::colour<S,T>);
#define INSTANTIATE_S(S) \
INSTANTIATE_S_T(S,uint8_t) \
INSTANTIATE_S_T(S,float) \
INSTANTIATE_S_T(S,double)
INSTANTIATE_S(3)
INSTANTIATE_S(4)

7
colour.hpp
View File

@ -29,8 +29,7 @@
namespace util {
/// An RGBA colour POD type.
template <size_t S, typename T>
struct colour : public coord::base<S,T,colour,coord::rgba>
{
struct colour : public coord::base<S,T,colour,coord::rgba> {
using coord::base<S,T,util::colour,coord::rgba>::base;
static const colour WHITE;
@ -45,7 +44,9 @@ namespace util {
// Serialisation
const json::tree::node& operator>> (const json::tree::node&, util::colour4f&);
std::ostream& operator<< (std::ostream&, const util::colour4f&);
template <size_t S, typename T>
std::ostream& operator<< (std::ostream&, util::colour<S,T>);
}
#endif