using UnityEngine;
using UnityEngine.Rendering;
using UnityEngine.UI;


public class ModifyTexture : MonoBehaviour
{
    //public Texture2D sourceTexture;  // The texture to modify
    public Color paleColor = Color.white; // The pale color
    public Color darkColor = Color.black; // The dark color
    public GameObject Cube;

    //private Texture2D modifiedTexture;


    public void ChangeValue()
    {
        // Create a new texture in a format that supports SetPixels (e.g., RGBA32)
        Texture2D sourceTexture = Resources.Load<Texture2D>("CABTEXTURE/TEXT.1.2");//Cube.GetComponent<MeshRenderer>().material.GetTexture("_BaseMap") as Texture2D;
        Texture2D NewTexture = new(sourceTexture.width, sourceTexture.height, TextureFormat.RGBA32, false);

        // Copy pixel data from source texture to the new texture
        Color[] pixels = sourceTexture.GetPixels();  // Get original pixels
        NewTexture.SetPixels(pixels);  // Copy them to the new texture
        NewTexture.Apply();  // Apply the changes to make it ready for modification

        darkColor=DOIT.CSc(this.transform.GetComponent<InputField>().text,255);

        // Now modify the texture's pixels
        ModifyTexturePixels(NewTexture, paleColor, darkColor,Color.black);

        // Apply the modified texture to the material or object
        Cube.GetComponent<MeshRenderer>().material.SetTexture("_BaseMap",NewTexture);
    }

    public static void ModifyTexturePixels(Texture2D texture, Color pale, Color dark, Color Grouth)
    {
        // Get the pixels of the texture

        //print("--------From ModifyTexture-----------");
        Color32[] pixels = texture.GetPixels32();
        Color32[] newPixels = new Color32[pixels.Length];

        for (int i = 0; i < pixels.Length; i++)
            {
                byte grayR = pixels[i].r; // Assumes grayscale, so R=G=B
                byte grayG = pixels[i].g; // Assumes grayscale, so R=G=B
                //byte grayB = pixels[i].r; // Assumes grayscale, so R=G=B

                if(grayR!=grayG){
                    newPixels[i] = Grouth; }
                else{
                   float normalizedValue = grayR / 255f;
                    newPixels[i] = Color.Lerp(dark, pale, normalizedValue); 
                }
                
            }

        texture.SetPixels32(newPixels);
        texture.Apply(); // Apply the changes to make them visible

    }

}