using UnityEngine;

namespace CrawfisSoftware
{
    public class LightProbesCreator : MonoBehaviour
    {
        [SerializeField] private Vector3 lowerBottomLeft;
        [SerializeField] private Vector3 upperTopRight;
        [Range(2, 30)]
        [SerializeField] private int numberInX = 5;
        [Range(2, 30)]
        [SerializeField] private int numberInZ = 5;
        [Range(2, 30)]
        [SerializeField] private int numberInY = 2;

        public void Create()
        {
            Vector3 delta = upperTopRight - lowerBottomLeft;
            float deltaX = delta.x / (float) (numberInX-1);
            float deltaZ = delta.z / (float) (numberInZ-1);
            float deltaY = delta.y / (float) (numberInY-1);
            Vector3[] probePositions = new Vector3[numberInX * numberInY * numberInZ];
            var group = gameObject.AddComponent<LightProbeGroup>();
            group.name = "Auto Generated Light Probes";
            int index = 0;
            for (int i = 0; i < numberInX; i++)
            {
                float x = i * deltaX + lowerBottomLeft.x;
                for (int j = 0; j < numberInY; j++)
                {
                    float y = j * deltaY + lowerBottomLeft.y;
                    for (int k = 0; k < numberInZ; k++)
                    {
                        float z = k * deltaZ + lowerBottomLeft.z;
                        probePositions[index] = new Vector3(x, y, z);
                        index++;
                    }
                }
            }
            group.probePositions = probePositions;
        }
    }
}