using UnityEngine;
using UnityEngine.InputSystem;

public class Noise : MonoBehaviour
{
    [SerializeField]
    private ComputeShader noiseShader;
    [Space(15)] 
    public float frequency = 0.001f;
    public float amplitude = 1;
    public int octaves = 4;
    public float persistence = 0.5f;


    public void Generate(int numPointsPerAxis, int numThreadsPerAxis, Vector3 offset)
    {
        var pointsBuffer = Buffers.pointsBuffer;
        
        noiseShader.SetBuffer(0, "points", pointsBuffer);
        noiseShader.SetInt("numPointsPerAxis", numPointsPerAxis);
        
        noiseShader.SetFloat("frequency", frequency);
        noiseShader.SetInt("octaves", octaves);
        noiseShader.SetFloat("amplitude", amplitude);
        noiseShader.SetFloat("persistence", persistence);

        var vec4 = new Vector4(offset.x, offset.y, offset.z, 0);
        
        noiseShader.SetVector("offset", vec4);

        
        noiseShader.Dispatch(0, numThreadsPerAxis,numThreadsPerAxis,numThreadsPerAxis);
        
        #if UNITY_EDITOR
            Vector4[] arr = new Vector4[pointsBuffer.count];
            Buffers.pointsBuffer.GetData(arr,0,0, pointsBuffer.count);

            var min = arr[0].w;
            var max = min;
            foreach (var p in arr)
            {
                if (min > p.w)
                    min = p.w;
                if (max < p.w)
                    max = p.w;
            }
            
            Debug.Log($"{min} || {max}");
        #endif
    }
}