function Scene(){
    var self = this;
    var W, H;
    var camera, scene, renderer;
    var geometry, material, mesh;
    var pointLight, ambientLight;
    var mouseX = 0;
    var mouseY = 0;
    var nbmesh = 1;
    var edge_w = 100;
    var edge_h = 150;
    var levels = 10; // slow? lower this
    
    this.init = function(){
      // SET
      scene = new THREE.Scene();
      W = window.innerWidth;
      H = window.innerHeight;
      
      // LIGHTS
      pointLight = new THREE.PointLight(0xD0D0D0, 2, 1000);
       pointLight.position.z = 100;
       pointLight.position.y = 100;
       pointLight.position.x = 500;
       scene.add(pointLight);
      ambientLight = new THREE.AmbientLight( 0x404040 );
      //scene.add(ambientLight);
      
      // CAMERA
      camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 1, 10000 );
      camera.position.x = 500;
      
      // CAST
      geometry = new THREE.CubeGeometry( edge_w, edge_h, edge_w );
      
      var mesh;
      var color;
      
      //color = new THREE.Color(0xff0000);
      color = new THREE.Color("rgb(153,90,0)");
      material = new THREE.MeshPhongMaterial( { color:color, wireframe: false } );
      mesh = new THREE.Mesh( geometry, material );
        
      scene.add(mesh);  
      mesh.matrix.makeTranslation(0,-125,0);
      mesh.matrixAutoUpdate=false;
  
      function tree (n, mat, c) {
        if(n > 0) {
          var new_mat = new THREE.Matrix4();
          var new_mat2 = new THREE.Matrix4();
          var new_mat_t0 = new THREE.Matrix4();
          var new_mat_t = new THREE.Matrix4();
          var new_mat_r = new THREE.Matrix4();
          var new_mat_r2 = new THREE.Matrix4();
          var new_mat_s = new THREE.Matrix4();
          var mat2 = mat.clone();
          var col1 = c.clone();
          var col2 = c.clone();
          //col1.offsetHSL(0.12,0,0);
          col1.g += 0.64/levels;
          material = new THREE.MeshPhongMaterial( { color:col1, wireframe: false } );
          mesh = new THREE.Mesh(geometry, material);
          new_mat_t0.makeTranslation(edge_w/2,0,0);
          new_mat_t.makeTranslation(0,edge_h,0);
          new_mat_r.makeRotationZ(-Math.PI/4);
          new_mat_r2.makeRotationY(Math.PI/2);
          new_mat_s.makeScale(0.75,0.75,0.75);
          new_mat.multiply(new_mat_r2);  //      
          new_mat.multiply(new_mat_t0);
          new_mat.multiply(new_mat_r);        
          new_mat.multiply(new_mat_s);        
          new_mat.multiply(new_mat_t);
          new_mat.multiply(mat);
          mesh.matrix.copy(new_mat);
          mesh.matrixAutoUpdate=false;
          mesh.updateMatrix=false; //
          scene.add(mesh);
          tree(n-1, mesh.matrix.clone(), col1);
  
          //col2.offsetHSL(0.12,0,0);
          col2.g += 0.64/levels;
          material = new THREE.MeshPhongMaterial( { color:col2, wireframe: false } );
          mesh = new THREE.Mesh(geometry, material);
          new_mat_t0.makeTranslation(-edge_w/2,0,0);
          new_mat_t.makeTranslation(0,edge_h,0);
          new_mat_r.makeRotationZ(Math.PI/4);
          new_mat_r2.makeRotationY(Math.PI/2);
          new_mat_s.makeScale(0.75,0.75,0.75);
          new_mat2.multiply(new_mat_r2);  //      
          new_mat2.multiply(new_mat_t0);
          new_mat2.multiply(new_mat_r);        
          new_mat2.multiply(new_mat_s);        
          new_mat2.multiply(new_mat_t);
          new_mat2.multiply(mat);
          mesh.matrix.copy(new_mat2);
          mesh.matrixAutoUpdate=false;
          mesh.updateMatrix=false; //
          scene.add(mesh);
          tree(n-1, mesh.matrix.clone(), col2);
        }
      }
      
      tree(levels, mesh.matrix, color);
      
      // ACTION
      renderer = new THREE.WebGLRenderer();
      renderer.setSize( window.innerWidth, window.innerHeight );
      document.querySelector('.scene').appendChild( renderer.domElement );
      
      window.addEventListener( "resize", this.onresize);
      document.addEventListener( "mousemove", this.onmousemove);
    }
    
    this.animate = function(){
      requestAnimationFrame(self.animate);
  
       camera.position.z += ( mouseX - camera.position.z ) * .05;
       camera.position.y += ( - mouseY + 100 - camera.position.y ) * .05;
      camera.lookAt( scene.position );
      renderer.render(scene, camera);
    }
    
    this.onresize = function(){
      W = window.innerWidth
      H = window.innerHeight
      camera.aspect = W / H;
      camera.updateProjectionMatrix();
      renderer.setSize(W, H, true);
      renderer.render(scene, camera);
    }
    
    this.onmousemove = function(e){
       mouseX = ( event.clientX - W/2 );
       mouseY = ( event.clientY - H/2 ); 
    }
    
    this.init();
    this.animate();
  }
  
  var s = new Scene();