using System;

using OpenTK;
using org.budnhead.core;
using org.budnhead.tools;

using System.Drawing;


namespace org.budnhead.graphics
{
	public class Scene
	{
		ShaderProgram		shader;
		WorldObject			root;

		public Scene()
		{
			shader = ResourceLibrary.getResource<ShaderProgram>("default");
			root = new ObjectGroup();
		}

		public Scene(GLSceneOrientation sceneOrientation)
		{
			shader = ResourceLibrary.getResource<ShaderProgram>("default");
			root = new ObjectGroup();
		}

		public Scene(Scene source){
			this.shader				= source.shader;
			this.root				= source.root;
		}


		public WorldObject RootObject {
			get { return this.root; }
			set { this.root = value; } 
		}

		public void draw(Viewport viewport){
			Matrix4	objectMatrix = Matrix4.Identity;

			shader.use();

			if (root != null){
				draw( viewport, objectMatrix, root );
			}

			foreach (WorldObject child in Actor.activeActors.ToArray()){
				draw( viewport, objectMatrix, child );
			}

		}

		public void draw(Viewport viewport,Matrix4 baseMatrix,WorldObject wo){
			Matrix4 objectMatrix = wo.BufferedTransformation * baseMatrix;

			//Console.WriteLine("draw(,{0}",wo);

			//Console.WriteLine("draw(): o={0}\noM=\n{1}",wo,objectMatrix);
			shader.setup(objectMatrix, viewport.SceneOrientation);

			Model3D m3d = wo.getModel3D();
			if (m3d != null){
				m3d.draw();
			}

			foreach (WorldObject child in wo.Children){
				draw( viewport, objectMatrix, child );
			}

		}



	}
}