using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using OpenTK;

namespace Template_P3
{
    public class SceneClassItem
    {
        private Template_P3.Mesh mosh;
        private SceneClassItem parent;
        private List<SceneClassItem> children = new List<SceneClassItem>();
        private Matrix4 transform;
        Shader shader;                          // shader to use for rendering
        Texture wood;
        //private Vector3 position;
        // create shaders
        //private Matrix4 transform = new Matrix4(new Vector4(1,0,0,0), new Vector4(0, 1, 0, 0), new Vector4(0, 0, 1, 0), new Vector4(0, 0, 0, 1));
        public SceneClassItem(Mesh m, SceneClassItem p, Vector3 pos, Texture w, float a)
        {
            mosh = m;
            parent = p;
            Matrix4 transm;
            wood = w;
            //position = new Vector3(p.position.X += pos.X, p.position.Y += pos.Y, p.position.Z += pos.Z);
            if (p == null)
            {
                transm = Matrix4.CreateFromAxisAngle(new Vector3(0, 1, 0), a);
                transm *= Matrix4.CreateTranslation(pos);
                transm *= Matrix4.CreatePerspectiveFieldOfView(1.2f, 1.3f, .1f, 1000);

                transform = transm;
            }
            else {
                transm = Matrix4.CreateFromAxisAngle(new Vector3(0, 1, 0), 499f);
                transm = Matrix4.CreateTranslation(pos);

                transform = p.transform * transm;
            }

            //Matrix4 transm = new Matrix4(new Vector4(1, 0, 0, 0), new Vector4(0, 1, 0, 0), new Vector4(0, 0, 1, 0), new Vector4(pos.X, pos.Y, pos.Z, 1));


            shader = new Shader("../../shaders/vs.glsl", "../../shaders/fs.glsl");


        }
        public void AddChild(SceneClassItem scikid)
        {
            children.Add(scikid);
        }
        /*public Template_P3.Mesh mesh
        {
            get
            {
                return this.mesh;
            }
            set
            {
                this.mesh = mosh;
            }
        }*/
        public List<SceneClassItem> kids
        {
            get
            {
                return this.kids;
            }
            set
            {
                this.kids = children;
            }
        }
        public void RendGL()
        {
            mosh.Render(shader, transform, wood);
            for (int i = 0;i<children.Count;i++)
            { children[i].RendGL(); }
        }

    }
}