lisyarus/psemek
1
0
Fork 1
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Switch lazy perlin arguments from vectors to points

Browse source
This commit is contained in:
Nikita Lisitsa 2022-11-19 22:57:22 +03:00
parent 445ac3419e
commit 4e5ed4edad
1 changed files with 9 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
libs/pcg/include/psemek/pcg/lazy_perlin.hpp
View file

@ -7,6 +7,7 @@
#include <psemek/geom/box.hpp>
#include <unordered_map>
#include <optional>
namespace psemek::pcg
{
@ -15,7 +16,7 @@ namespace psemek::pcg
{
template <typename T, std::size_t N, typename F, typename G>
T perlin_impl(geom::vector<T, N> p, int grid_size, F && grid_at, G && bound)
T perlin_impl(geom::point<T, N> p, int grid_size, F && grid_at, G && bound)
{
geom::vector<int, N> ip;
for (std::size_t i = 0; i < N; ++i)
@ -24,7 +25,7 @@ namespace psemek::pcg
}
ip = bound(ip);
geom::vector<T, N> t = (p - geom::cast<T>(ip) * T(grid_size)) / T(grid_size);
geom::vector<T, N> t = (p - p.zero() - geom::cast<T>(ip) * T(grid_size)) / T(grid_size);
T values[1 << N];
@ -73,7 +74,7 @@ namespace psemek::pcg
, subgrid_(std::move(subgrid))
{}
T operator()(geom::vector<T, N> p) const;
T operator()(geom::point<T, N> p) const;
private:
int grid_size_;
@ -94,7 +95,7 @@ namespace psemek::pcg
, gen_(std::move(generator))
{}
T operator()(geom::vector<T, N> p) const;
T operator()(geom::point<T, N> p) const;
auto subview(geom::box<T, N> const & box) const;
@ -136,7 +137,7 @@ namespace psemek::pcg
grid_.resize(dims);
}
T operator()(geom::vector<T, N> p) const;
T operator()(geom::point<T, N> p) const;
private:
int const grid_size_;
@ -158,7 +159,7 @@ namespace psemek::pcg
};
template <typename T, std::size_t N>
T lazy_perlin_view<T, N>::operator()(geom::vector<T, N> p) const
T lazy_perlin_view<T, N>::operator()(geom::point<T, N> p) const
{
return detail::perlin_impl(p, grid_size_, [this](auto const & c){
return subgrid_(c - origin_);
@ -173,7 +174,7 @@ namespace psemek::pcg
}
template <typename T, std::size_t N>
T lazy_perlin<T, N>::operator()(geom::vector<T, N> p) const
T lazy_perlin<T, N>::operator()(geom::point<T, N> p) const
{
return detail::perlin_impl(p, grid_size_, [this](auto const & c){ return grid_at(c); }, [](auto const & p){ return p; });
}
@ -203,7 +204,7 @@ namespace psemek::pcg
}
template <typename T, std::size_t N>
T bounded_lazy_perlin<T, N>::operator()(geom::vector<T, N> p) const
T bounded_lazy_perlin<T, N>::operator()(geom::point<T, N> p) const
{
return detail::perlin_impl(p, grid_size_, [this](auto const & c){ return grid_at(c); }, [this](auto p){
for (std::size_t i = 0; i < N; ++i)