using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Emgu.CV;
using Emgu.CV.Structure;
using bbiwarg.Utility;
using bbiwarg.Detectors.Fingers;

namespace bbiwarg.Images
{
    public enum FingerImageState {
        none = 0,
        possibleFingerSlice = 1,
        fingerSlice = 2,
        fingerDetected = 3,
        fingerTracked = 4
    }

    class FingerImage
    {
        private Image<Gray, byte> image;

        public FingerImage(int width, int height) {
            image = new Image<Gray, byte>(width, height);
        }

        public FingerImageState getStateAt(int x, int y) {
            return (FingerImageState)image.Data[y, x, 0];
        }

        public void drawFinger(Finger finger, FingerImageState state) {
            FingerSliceTrail trail = finger.SliceTrail;
            for (int i = 0; i < trail.NumSlices; i++) {
                drawLine(trail[i].Line, FingerImageState.fingerSlice);
            }
            drawLine(finger.LineSegment, state);
        }

        public void drawLine(Utility.LineSegment2D line, FingerImageState state)
        {
            image.Draw(new LineSegment2DF(line.P1, line.P2), new Gray((byte)state), 1);
        }
    }
}