图片.png

    var scene = new THREE.Scene();
    var camera = new THREE.PerspectiveCamera(45,window.innerWidth/window.innerHeight,0.1,1000);
    camera.position.set(0,20,40);
    camera.lookAt(scene.position);
    var renderer = new THREE.WebGLRenderer();
    renderer.setSize(window.innerWidth,window.innerHeight);
    renderer.setClearColor('#CCCCCC');
    renderer.shadowMapEnabled = true;
    //坐标
    var axes = new THREE.AxisHelper(4);
    scene.add(axes);
    //
    var planeGeometry = new THREE.PlaneGeometry(40,10,1,1);
    var planeMaterial = new THREE.MeshLambertMaterial({
        color:0x8DCC87
    });
    var plane = new THREE.Mesh(planeGeometry,planeMaterial);
    plane.position.set(0,0,0);
    plane.rotation.x = -0.5*Math.PI;
    plane.receiveShadow = true;
    scene.add(plane);

    //立方体1
    var cubeGeometry = new THREE.BoxGeometry(4,4,4);
    var cubeMaterial = new THREE.MeshLambertMaterial({
        color:0x0000FF
    });
    var cube = new THREE.Mesh(cubeGeometry,cubeMaterial);
    cube.position.set(-16,2,0);
    cube.castShadow = true;
    cube.receiveShadow = true;
    scene.add(cube);
    //立方体2
    var cubeGeometry = new THREE.BoxGeometry(4,4,4);
    var cubeMaterial = new THREE.MeshLambertMaterial({
        color:0x22FFDD
    });
    var cube2 = new THREE.Mesh(cubeGeometry,cubeMaterial);
    cube2.position.set(16,2,0);
    cube2.castShadow = true;
    cube2.receiveShadow = true;
    scene.add(cube2);
    //圆球
    var sphereGeometry = new THREE.SphereGeometry(2,20,20);
    var sphereMaterial = new THREE.MeshLambertMaterial({
        color:0xFF00F7
    });
    var sphere = new THREE.Mesh(sphereGeometry,sphereMaterial);
    sphere.position.set(16,6,0);
    sphere.castShadow = true;
    scene.add(sphere);

    var ambientLight = new THREE.AmbientLight('#212121');
    scene.add(ambientLight);
    var pointLight = new THREE.SpotLight(0xFFFFFF);
    pointLight.position.set(0,80,0);
    pointLight.castShadow = true;
    scene.add(pointLight);
    document.body.appendChild(renderer.domElement);
    renderer.render(scene,camera);
    var step = 90;
    var angle = 0;
    function run() {
        step += 1;
        angle = step*Math.PI/180;
        //camera.position.x = 16*(Math.sin(step));
        sphere.position.x = 16*(Math.sin(angle));
        sphere.position.y = 6+(8*Math.abs(Math.cos(angle)));
        if(step > 2699){
            step = 2699;
        }
        console.log(sphere.position.y);
        requestAnimationFrame(run);
        renderer.render(scene,camera);
    }
    run()