02-geometrias2D.html


<!DOCTYPE html>
<html>
<head>
    <title>three.js webgl - controls</title>
    <meta charset="utf-8">
    <script src="../frameworks/three.min.js"></script>
    <script src="../frameworks/dat.gui.min.js"></script>
    <style>
        body {
            margin: 0;
            overflow: hidden;
        }
    </style>
    <script>

    var renderer;
    var scene;
    var camera;
    var clock;
    var control;

    function init() {

        scene = new THREE.Scene();

        camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000);

        renderer = new THREE.WebGLRenderer();
        renderer.setClearColor(0x000000, 1.0);
        renderer.physicallyCorrectLights = true;
        renderer.gammaInput = true;
        renderer.gammaOutput = true;
        renderer.shadowMap.enabled = true;
        renderer.toneMapping = THREE.ReinhardToneMapping;
        renderer.setPixelRatio( window.devicePixelRatio );
        renderer.setSize( window.innerWidth, window.innerHeight );

        var planeGeometry = new THREE.PlaneGeometry(25, 20);
        var planeMaterial = new THREE.MeshLambertMaterial({color: 0xcccccc});
        var plane = new THREE.Mesh(planeGeometry, planeMaterial);
        plane.receiveShadow = true;
        plane.rotation.x = -0.5 * Math.PI;
        plane.position.x = 0;
        plane.position.y = -2;
        plane.position.z = 0;

        scene.add(plane);

        var darkMaterial = new THREE.MeshPhongMaterial({color: 0x086113, transparent:true, opacity:1, side: THREE.DoubleSide });
        var wireframeMaterial = new THREE.MeshBasicMaterial( { color: 0x000000, wireframe: true, transparent: true } ); 
        var multiMaterial =[ darkMaterial, wireframeMaterial ]; 
        var shape;
    
        // plane
        var plane=new THREE.PlaneGeometry(4, 4);
        shape = THREE.SceneUtils.createMultiMaterialObject( plane, multiMaterial );
        shape.children[ 0 ].castShadow = true;
        shape.children[ 0 ].name= "plane";
        shape.position.set(-6,0,-3)
        scene.add( shape );

        // ring
        var ring=new THREE.RingGeometry (1,2, 16);
        shape = THREE.SceneUtils.createMultiMaterialObject( ring, multiMaterial );
        shape.children[ 0 ].castShadow = true;
        shape.children[ 0 ].name= "ring";
        shape.position.set(0,0,-3)
        scene.add( shape );

        // circle
        var circle=new THREE.CircleGeometry( 2, 25 );
        shape = THREE.SceneUtils.createMultiMaterialObject( circle, multiMaterial );
        shape.children[ 0 ].castShadow = true;
        shape.children[ 0 ].name= "circle";
        shape.position.set(6,0,-3)
        scene.add( shape );

        camera.position.x = 15;
        camera.position.y = 16;
        camera.position.z = 13;
        camera.lookAt(scene.position);


        var ambient = new THREE.AmbientLight(0xffffff,0.3);
        scene.add(ambient);
        var light = new THREE.DirectionalLight(0xffffff, 1, 100, 2 );
        light.position.set(10, 20 , 20); 
        light.castShadow = true;
        light.shadow.mapSize.width = 3 * 512; 
        light.shadow.mapSize.height = 3 * 512;
        light.shadow.bias = 0.1;
        light.shadow.camera.top = 25; //X
        light.shadow.camera.right = 25;
        light.shadow.camera.left = -25;
        light.shadow.camera.bottom = -25;
        light.shadow.camera.visible = true;
        
        scene.add(light);

        control = new function() {
            this.rotationSpeed = 0.5;
            this.opacity = 1;
            this.color = 0x086113;
            this.plane=true;
            this.ring=true;
            this.circle=true;
        };
        addControlGui(control);

        clock = new THREE.Clock();
        document.body.appendChild(renderer.domElement);

        render();
    }

    function addControlGui(controlObject) {
        var gui = new dat.GUI();
        gui.add(controlObject, 'rotationSpeed', -1, 1);
        gui.add(controlObject, 'opacity', 0.1, 1);
        gui.addColor(controlObject, 'color');
        gui.add(controlObject, 'plane');
        gui.add(controlObject, 'ring');
        gui.add(controlObject, 'circle');
    }

    function render() {

        var delta =  clock.getDelta();
        var rotSpeed = delta*control.rotationSpeed;
        camera.position.x = camera.position.x * Math.cos(rotSpeed) + camera.position.z * Math.sin(rotSpeed);
        camera.position.z = camera.position.z * Math.cos(rotSpeed) - camera.position.x * Math.sin(rotSpeed);
        camera.lookAt(scene.position);

        scene.getObjectByName('plane').material.opacity = control.opacity;
        scene.getObjectByName('plane').material.color = new THREE.Color(control.color);
        
        scene.getObjectByName('plane').parent.visible=control.plane;
        scene.getObjectByName('circle').parent.visible=control.circle;
        scene.getObjectByName('ring').parent.visible=control.ring;

        
        requestAnimationFrame(render);
        renderer.render(scene, camera);
    }


    function handleResize() {
        camera.aspect = window.innerWidth / window.innerHeight;
        camera.updateProjectionMatrix();
        renderer.setSize(window.innerWidth, window.innerHeight);
    }

    window.addEventListener("DOMContentLoaded", function(event) {
            init();
    });
    window.addEventListener('resize', handleResize, false);

    </script>
</head>
<body>
</body>
</html>