using UnityEngine;

namespace Assets.Scripts {
    public static class Noise {
        public static float Get2DNoise(Vector2 pos, float offset, float scale) {
            return Mathf.PerlinNoise((pos.x + 0.1f) / VoxelData.ChunkWidth * scale + offset,
                                     (pos.y + 0.1f) / VoxelData.ChunkWidth * scale + offset);
        }

        public static bool Get3DNoise(Vector3 pos, float offset, float scale, float threshold) {
            float x = (pos.x + offset + 0.1f) * scale;
            float y = (pos.y + offset + 0.1f) * scale;
            float z = (pos.z + offset + 0.1f) * scale;

            float AB = Mathf.PerlinNoise(x, y);
            float BC = Mathf.PerlinNoise(y, z);
            float AC = Mathf.PerlinNoise(x, z);
            float BA = Mathf.PerlinNoise(y, x);
            float CB = Mathf.PerlinNoise(z, y);
            float CA = Mathf.PerlinNoise(z, x);

            return ((AB + BC + AC + BA + CB + CA) / 6f > threshold);
        }
    }
}