using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;
using System;
using System.IO;

public class UVMeshDeform : MonoBehaviour {

    Texture2D deformer;
    public Material deformermat;
    public float midway;
    Vector2[] uvdeform;
    Vector2[] uvdest;
    public GameObject destination;

    void Start()
    {
        Mesh oldmesh = GetComponent<MeshFilter>().sharedMesh;
        Mesh newmesh = Instantiate(oldmesh) as Mesh;
        Mesh destmesh = destination.GetComponent<MeshFilter>().sharedMesh;
        GetComponent<MeshFilter>().sharedMesh = newmesh;
        Vector3[] verticesold = newmesh.vertices;
        Vector3[] verticesnew = destmesh.vertices;
        uvdeform = newmesh.uv;
        deformer = new Texture2D(512,512,TextureFormat.RGBAFloat,false);
        for (int p = 0; p < uvdeform.Length; p++)
        {
            //Color pixels = deformer.GetPixelBilinear(uvdeform[p].x, uvdeform[p].y);

            //verticesold[p].x += verticesnew[p].x - verticesold[p].x;
            //verticesold[p].y += verticesnew[p].y - verticesold[p].y;
            //verticesold[p].z += verticesnew[p].z - verticesold[p].z;

            Color pixels = new Color((verticesnew[p].x - verticesold[p].x) + (midway / 255), (verticesnew[p].y - verticesold[p].y) + (midway / 255), (verticesnew[p].z - verticesold[p].z) + (midway / 255));

            deformer.SetPixel(Mathf.RoundToInt(uvdeform[p].x * deformer.width), Mathf.RoundToInt(uvdeform[p].y * deformer.height), pixels);

            verticesold[p].x += pixels.r - (midway / 255);
            verticesold[p].y += pixels.g - (midway / 255);
            verticesold[p].z += pixels.b - (midway / 255);

            //print(pixels.r);
        }
        byte[] bytes = deformer.EncodeToPNG();
        File.WriteAllBytes(Application.dataPath + "SavedScreen.png", bytes);
        newmesh.vertices = verticesold;
        newmesh.RecalculateBounds();
    }
}