using UnityEngine;
using UnityEngine.SceneManagement;
using System.Collections;
using OpenCVForUnity.ImgprocModule;
using OpenCVForUnity.CoreModule;
using OpenCVForUnity.UnityUtils;

namespace OpenCVForUnityExample
{
    /// <summary>
    /// Drawing Example
    /// An example of drawing to an image using the Imgproc class.
    /// </summary>
    public class DrawingExample : MonoBehaviour
    {
        // Use this for initialization
        void Start ()
        {
            Texture2D imgTexture = Resources.Load ("chessboard") as Texture2D;
            
            Mat imgMat = new Mat (imgTexture.height, imgTexture.width, CvType.CV_8UC3);
            
            Utils.texture2DToMat (imgTexture, imgMat);
            Debug.Log ("imgMat.ToString() " + imgMat.ToString ());


            Imgproc.line (imgMat, new Point (50, 50), new Point (400, 105), new Scalar (0, 0, 200), 3);  

            Imgproc.rectangle (imgMat, new Point (150, 200), new Point (300, 300), new Scalar (0, 200, 0), 5);

            Imgproc.circle (imgMat, new Point (500, 300), 80, new Scalar (200, 0, 0), 1);

            Imgproc.arrowedLine (imgMat, new Point (100, 500), new Point (550, 350), new Scalar (255, 255, 0), 4, Imgproc.LINE_8, 0, 0.1);


            double angle = 100;
            Imgproc.ellipse (imgMat, new Point (200, 400), new Size (80, 150), angle, angle - 200, angle + 100, new Scalar (255, 255, 255), -1);


            int[] face = {Imgproc.FONT_HERSHEY_SIMPLEX, Imgproc.FONT_HERSHEY_PLAIN, Imgproc.FONT_HERSHEY_DUPLEX, Imgproc.FONT_HERSHEY_COMPLEX, 
                Imgproc.FONT_HERSHEY_TRIPLEX, Imgproc.FONT_HERSHEY_COMPLEX_SMALL, Imgproc.FONT_HERSHEY_SCRIPT_SIMPLEX, 
                Imgproc.FONT_HERSHEY_SCRIPT_COMPLEX, Imgproc.FONT_ITALIC
            };
        

            Imgproc.putText (imgMat, "OpenCV", new Point (50, 50), face [0], 1.2, new Scalar (0, 0, 200), 2, Imgproc.LINE_AA, false);
            Imgproc.putText (imgMat, "OpenCV", new Point (50, 100), face [1], 1.2, new Scalar (0, 200, 0), 2, Imgproc.LINE_AA, false);
            Imgproc.putText (imgMat, "OpenCV", new Point (50, 150), face [2], 1.2, new Scalar (200, 0, 0), 2, Imgproc.LINE_AA, false);
            Imgproc.putText (imgMat, "OpenCV", new Point (50, 200), face [3], 1.2, new Scalar (0, 100, 100), 2, Imgproc.LINE_AA, false);
            Imgproc.putText (imgMat, "OpenCV", new Point (50, 250), face [4], 1.2, new Scalar (100, 100, 0), 2, Imgproc.LINE_AA, false);
            Imgproc.putText (imgMat, "OpenCV", new Point (50, 300), face [5], 1.2, new Scalar (100, 0, 100), 2, Imgproc.LINE_AA, false);
            Imgproc.putText (imgMat, "OpenCV", new Point (50, 350), face [6], 1.2, new Scalar (100, 100, 100), 2, Imgproc.LINE_AA, false);
            Imgproc.putText (imgMat, "OpenCV", new Point (50, 400), face [7], 1.2, new Scalar (100, 100, 200), 2, Imgproc.LINE_AA, false);
            Imgproc.putText (imgMat, "OpenCV", new Point (300, 50), face [0] | face [8], 1.2, new Scalar (100, 200, 100), 2, Imgproc.LINE_AA, false);
            Imgproc.putText (imgMat, "OpenCV", new Point (300, 100), face [1] | face [8], 1.2, new Scalar (200, 100, 100), 2, Imgproc.LINE_AA, false);
            Imgproc.putText (imgMat, "OpenCV", new Point (300, 150), face [2] | face [8], 1.2, new Scalar (200, 200, 100), 2, Imgproc.LINE_AA, false);
            Imgproc.putText (imgMat, "OpenCV", new Point (300, 200), face [3] | face [8], 1.2, new Scalar (200, 100, 200), 2, Imgproc.LINE_AA, false);
            Imgproc.putText (imgMat, "OpenCV", new Point (300, 250), face [4] | face [8], 1.2, new Scalar (100, 200, 200), 2, Imgproc.LINE_AA, false);
            Imgproc.putText (imgMat, "OpenCV", new Point (300, 300), face [5] | face [8], 1.2, new Scalar (100, 200, 255), 2, Imgproc.LINE_AA, false);
            Imgproc.putText (imgMat, "OpenCV", new Point (300, 350), face [6] | face [8], 1.2, new Scalar (100, 255, 200), 2, Imgproc.LINE_AA, false);
            Imgproc.putText (imgMat, "OpenCV", new Point (300, 400), face [7] | face [8], 1.2, new Scalar (255, 200, 100), 2, Imgproc.LINE_AA, false);


            Texture2D texture = new Texture2D (imgMat.cols (), imgMat.rows (), TextureFormat.RGBA32, false);
            Utils.matToTexture2D (imgMat, texture);
        
            gameObject.GetComponent<Renderer> ().material.mainTexture = texture;
        }
    
        // Update is called once per frame
        void Update ()
        {
        
        }

        /// <summary>
        /// Raises the back button click event.
        /// </summary>
        public void OnBackButtonClick ()
        {
            SceneManager.LoadScene ("OpenCVForUnityExample");
        }
    }
}