using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using OpenTK.Graphics.OpenGL;
using MathNet.Numerics.LinearAlgebra.Single;

namespace bbiwarg.Graphics
{
    class Rectangle : IGraphicElement
    {
        public Vertex[] corners;
        public Color color;

        public Rectangle(Vertex[] corners, Color color)
        {
            this.corners = corners;
            this.color = color;
        }

        public void draw()
        {
            GL.Color4(color);

            GL.Begin(BeginMode.Polygon);
            GL.Vertex3(corners[0].x, corners[0].y, -corners[0].z);
            GL.Vertex3(corners[1].x, corners[0].y, -corners[0].z);
            GL.Vertex3(corners[1].x, corners[1].y, -corners[1].z);
            GL.Vertex3(corners[0].x, corners[1].y, -corners[1].z);
            GL.End();
        }

        public List<Vector> getVertices()
        {

            List<Vector> result = new List<Vector>();

            result.Add(new DenseVector(new float[] { corners[0].x, corners[0].y, -corners[0].z }));
            result.Add(new DenseVector(new float[] { corners[1].x, corners[0].y, -corners[0].z }));
            result.Add(new DenseVector(new float[] { corners[1].x, corners[1].y, -corners[1].z }));
            result.Add(new DenseVector(new float[] { corners[0].x, corners[1].y, -corners[1].z }));

            return result;

        }

        public uint[] getTriangleIndices()
        {
            return new uint[] { 0, 1, 2, 0, 2, 3 };
        }

        public Color getColor()
        {
            return color;
        }
    }
}