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noise/basis: parameterise lerp function

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This commit is contained in:
Danny Robson 2015-05-18 15:01:06 +10:00
parent ebbc90c88d
commit cacaee4c5d
2 changed files with 11 additions and 11 deletions
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16
noise/basis.cpp
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@ -82,27 +82,27 @@ basis::eval (double, double) const
///////////////////////////////////////////////////////////////////////////////
template <util::noise::lerp_function L>
template <util::noise::lerp_t<double> L>
value<L>::value (seed_t _seed):
basis (_seed)
{ ; }
//-----------------------------------------------------------------------------
template <util::noise::lerp_function L>
template <util::noise::lerp_t<double> L>
value<L>::value ()
{ ; }
//-----------------------------------------------------------------------------
template <util::noise::lerp_function L>
template <util::noise::lerp_t<double> L>
util::range<double>
value<L>::bounds (void) const
{ return { -1.0, 1.0 }; }
//-----------------------------------------------------------------------------
template <util::noise::lerp_function L>
template <util::noise::lerp_t<double> L>
double
value<L>::eval (double x, double y) const {
intmax_t x_int = static_cast<intmax_t> (x);
@ -140,27 +140,27 @@ namespace util {
///////////////////////////////////////////////////////////////////////////////
template <util::noise::lerp_function L>
template <util::noise::lerp_t<double> L>
gradient<L>::gradient (seed_t _seed):
basis (_seed)
{ ; }
//-----------------------------------------------------------------------------
template <util::noise::lerp_function L>
template <util::noise::lerp_t<double> L>
gradient<L>::gradient ()
{ ; }
//-----------------------------------------------------------------------------
template <util::noise::lerp_function L>
template <util::noise::lerp_t<double> L>
util::range<double>
gradient<L>::bounds (void) const
{ return { -sqrt(2.0) / 2.0, sqrt (2.0) / 2.0 }; }
//-----------------------------------------------------------------------------
template <util::noise::lerp_function L>
template <util::noise::lerp_t<double> L>
double
gradient<L>::eval (double x, double y) const {
intmax_t x_int = static_cast<intmax_t> (x);

6
noise/basis.hpp
View File

@ -23,7 +23,7 @@
namespace util {
namespace noise {
typedef double (*lerp_function)(double, double, double);
template <typename T> using lerp_t = T (*)(T,T,T);
struct basis {
typedef uint64_t seed_t;
@ -40,7 +40,7 @@ namespace util {
/// Perlin: single value per grid space
template <lerp_function L>
template <lerp_t<double>>
struct value : public basis {
value (seed_t);
value ();
@ -51,7 +51,7 @@ namespace util {
/// Perlin: interpolated value across each grid space
template <lerp_function L>
template <lerp_t<double>L>
struct gradient : public basis {
gradient (seed_t);
gradient ();