A estrutura da páxina é a seguinte:



	var material  = new THREE.MeshPhongMaterial( { color: 0x00ffff, side: THREE.DoubleSide} );

	// Cono 1
	var geometria1 = new THREE.CylinderGeometry( 60, 0, 150, 60 );
	var cono1 = new THREE.Mesh( geometria1, material );
	cono1.scale.multiplyScalar(0.8);
        cono1.position.y = +59;
	scene.add( cono1 );

	// Cono 2
	var geometria2 = new THREE.CylinderGeometry( 0, 60, 150, 60 );
	var cono2 = new THREE.Mesh( geometria2, material );
	cono2.scale.multiplyScalar(0.8);
        cono2.position.y = -59;
	scene.add( cono2 );

	// Plano
        var geometria3 = new THREE.PlaneGeometry( 250, 250 );
	var material2 = new THREE.MeshLambertMaterial({ color: 0xffff00,
                                                        side: THREE.DoubleSide,
                                                        transparent:true,
                                                        opacity:0.9  } );
        miplano = new THREE.Mesh( geometria3, material2 );
        miplano.position.z = z;
        scene.add( miplano );