some code reorganization

[blank.git] / src / noise.hpp

diff --git a/src/noise.hpp b/src/noise.hpp
deleted file mode 100644 (file)
index cbfd48e..0000000
--- a/src/noise.hpp
+++ /dev/null
@@ -1,99 +0,0 @@
-#ifndef BLANK_NOISE_HPP_
-#define BLANK_NOISE_HPP_
-
-#include <cstdint>
-#include <limits>
-#include <glm/glm.hpp>
-
-
-namespace blank {
-
-class GaloisLFSR {
-
-public:
-       // seed should be non-zero
-       explicit GaloisLFSR(std::uint64_t seed) noexcept;
-
-       // get the next bit
-       bool operator ()() noexcept;
-
-       template<class T>
-       T operator ()(T &out) noexcept {
-               constexpr int num_bits =
-                       std::numeric_limits<T>::digits +
-                       std::numeric_limits<T>::is_signed;
-               for (int i = 0; i < num_bits; ++i) {
-                       operator ()();
-               }
-               return out = static_cast<T>(state);
-       }
-
-private:
-       std::uint64_t state;
-       // bits 64, 63, 61, and 60 set to 1 (counting from 1 lo to hi)
-       static constexpr std::uint64_t mask = 0xD800000000000000;
-
-};
-
-
-/// (3D only) adaptation of Stefan Gustavson's SimplexNoise java class
-class SimplexNoise {
-
-public:
-       explicit SimplexNoise(unsigned int seed) noexcept;
-
-       float operator ()(const glm::vec3 &) const noexcept;
-
-private:
-       int Perm(int idx) const noexcept;
-       int Perm12(int idx) const noexcept;
-       const glm::vec3 &Grad(int idx) const noexcept;
-
-private:
-       int perm[512];
-       int perm12[512];
-       glm::vec3 grad[12];
-
-};
-
-
-/// implementation of Worley noise (aka Cell or Voroni noise)
-class WorleyNoise {
-
-public:
-       explicit WorleyNoise(unsigned int seed) noexcept;
-
-       float operator ()(const glm::vec3 &) const noexcept;
-
-private:
-       const unsigned int seed;
-       const int num_points;
-
-};
-
-
-template<class Noise>
-float OctaveNoise(
-       const Noise &noise,
-       const glm::vec3 &in,
-       int num,
-       float persistence,
-       float frequency = 1.0f,
-       float amplitude = 1.0f,
-       float growth = 2.0f
-) {
-       float total = 0.0f;
-       float max = 0.0f;
-       for (int i = 0; i < num; ++i) {
-               total += noise(in * frequency) * amplitude;
-               max += amplitude;
-               amplitude *= persistence;
-               frequency *= growth;
-       }
-
-       return total / max;
-}
-
-}
-
-#endif