X-Git-Url: https://git.localhorst.tv/?a=blobdiff_plain;f=src%2Frand%2FSimplexNoise.hpp;fp=src%2Frand%2FSimplexNoise.hpp;h=a91e1c4bfd83ec1a492a8b32cd936ed020a94d39;hb=dfe661278fe5fd69e821d530d50b78082d19ce54;hp=0000000000000000000000000000000000000000;hpb=88073614253d3a9c678848a6e905c3794aa831ca;p=tacos.git

diff --git a/src/rand/SimplexNoise.hpp b/src/rand/SimplexNoise.hpp
new file mode 100644
index 0000000..a91e1c4
--- /dev/null
+++ b/src/rand/SimplexNoise.hpp
@@ -0,0 +1,35 @@
+#ifndef TACOS_RAND_SIMPLEXNOISE_HPP_
+#define TACOS_RAND_SIMPLEXNOISE_HPP_
+
+#include <cstdint>
+#include <glm/glm.hpp>
+
+
+namespace tacos {
+
+class SimplexNoise {
+
+public:
+	explicit SimplexNoise(std::uint64_t 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];
+	glm::ivec3 second_ints[8];
+	glm::ivec3 third_ints[8];
+	glm::vec3 second_floats[8];
+	glm::vec3 third_floats[8];
+
+};
+
+}
+
+#endif