using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;

public class SellmeierEquatiionView : MonoBehaviour
{

    private SellmeierEquation _equation;

    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        
    }


    private float[] SamplePlot(SellmeierEquation equation) {
        int samplesCount = 30;

        float startLength = 0.3f;
        float endLength = 0.6f;


        float[] result = new float[samplesCount];

        for (int i = 0; i < samplesCount; i++) {

            if(i > 0) {
                float step = ((endLength - startLength) / (samplesCount - 1));
                result[i] = equation.Calc(startLength + step * i);
            } else {
                result[i] = equation.Calc(startLength);
            }
        }


        return result;
    }

    private void OnDrawGizmos() {
        if (_equation == null) {
            var coeffs = new SellmeierEquation.Coefficients(
                new float[] { 0.99654f, 0.18964f, 0.00411f },
                new float[] { 0.00787f, 0.02191f, 3.85727f });
            _equation = new SellmeierEquation(coeffs);
        }

        var samples = SamplePlot(_equation);

        float minValue = samples.Min();
        float maxValue = samples.Max();


        float n365 = _equation.Calc(0.365f);
        float n395 = _equation.Calc(0.395f);
        float n405 = _equation.Calc(0.405f);

        Debug.Log($"n365 = {n365}, n395 = {n395}, n405 = {n405}");

        for (int i = 0; i < samples.Length - 1; i++) {
            var n1 = samples[i];
            var n2 = samples[i + 1];

            float n1Scaled = (n1 - minValue) / (maxValue - minValue);
            float n2Scaled = (n2 - minValue) / (maxValue - minValue);

            Gizmos.DrawLine(transform.position + Vector3.right * (i / (float)samples.Length) + Vector3.up * n1Scaled, transform.position + Vector3.right * ((i + 1) / (float)samples.Length) + Vector3.up * n2Scaled);
        }

       
    }
}