放弃吧 放弃吧 三星连珠都很难了 ，九星连珠要跑到什么时候（*ﾟ∀ﾟ）つ―{}@{}@{}-　来吃烧烤

简单代码重复练习加深印象。
公转周期基本是按照实际来编写的。半径和运转半径就是瞎编的，意思一下。

image.png

<script type="text/javascript">
    var controls = new function ()  {
        this.spend = 1;
        this.year = 0;
    }
    var gui = new dat.GUI();
    gui.add(controls,'spend',0,100,"公转速度");
    gui.add(controls,'year',"渲染次数").listen();

    var scene = new THREE.Scene();
    var camera = new THREE.PerspectiveCamera(45,window.innerWidth/window.innerHeight,0.1,1000);
    camera.position.set(-30,30,40);
    camera.lookAt(scene.position);

    var renderer = new THREE.WebGLRenderer();
    renderer.setSize(window.innerWidth,window.innerHeight);
    renderer.setClearColor('#1f1f1f');

    function drawSphere(x,y,z,r,colorS) {
        var sphereGeometry = new THREE.SphereGeometry(r,20,20);
        var sphereMaterial = new THREE.MeshLambertMaterial({
            color:colorS
        });
        var sphere = new THREE.Mesh(sphereGeometry,sphereMaterial);
        sphere.position.x = x;
        sphere.position.y = y;
        sphere.position.z = z;
        scene.add(sphere);
        return sphere;
    }
    //想按照比例来做是不存在的 ,因为实际比例太变态了。
    sphere1 = drawSphere(0,0,0,4,0xFF0000);
    sphere2 = drawSphere(5.7,0,0,1.5,'#01ADFF');//水星
    sphere3 = drawSphere(10.8,0,0,1,'#ffb200');//金星
    sphere4 = drawSphere(15,0,0,1.2,'#0400ff');//地球
    sphere5 = drawSphere(18,0,0,1.4,'#b8291e');//火星
    sphere6 = drawSphere(22,0,0,1.3,'#515302');//木星
    sphere7 = drawSphere(25,0,0,2.0,'#524c3d');//土星
    sphere8 = drawSphere(29,0,0,2.1,'#d000dd');//天王星
    sphere9 = drawSphere(35,0,0,1.9,'#00ffa6');//海王星 想按照比例来做 是不存在的


    var ambientLight = new THREE.AmbientLight('#222222');
    scene.add(ambientLight);
    var spotLight = new THREE.SpotLight(0xFFFFFF);
    spotLight.position.set(-40,80,-40);
    scene.add(spotLight);

    document.body.appendChild(renderer.domElement);

    renderer.render(scene,camera);

    var speed2 = 2*Math.PI*Math.random();
    var speed3 = 2*Math.PI*Math.random();
    var speed4 = 2*Math.PI*Math.random();
    var speed5 = 2*Math.PI*Math.random();
    var speed6 = 2*Math.PI*Math.random();
    var speed7 = 2*Math.PI*Math.random();
    var speed8 = 2*Math.PI*Math.random();
    var speed9 = 2*Math.PI*Math.random();
    function run() {
        controls.year += 1;
        var beishu = 500;
        speed2 += (1/0.241)*controls.spend/beishu;
        speed3 += (1/0.615)*controls.spend/beishu;
        speed4 += 1*controls.spend/beishu;
        speed5 += (1/1.881)*controls.spend/beishu;
        speed6 += (1/11.86)*controls.spend/beishu;
        speed7 += (1/29.46)*controls.spend/beishu;
        speed8 += (1/84.01)*controls.spend/beishu;
        speed9 += (1/164.8)*controls.spend/beishu;
        sphere2.position.x = 8*Math.cos(speed2);
        sphere2.position.z = 8*Math.sin(speed2);
        sphere3.position.x = 12*Math.cos(speed3);
        sphere3.position.z = 12*Math.sin(speed3);
        sphere4.position.x = 15*Math.cos(speed4);
        sphere4.position.z = 15*Math.sin(speed4);
        sphere5.position.x = 18*Math.cos(speed5);
        sphere5.position.z = 18*Math.sin(speed5);
        sphere6.position.x = 22*Math.cos(speed6);
        sphere6.position.z = 22*Math.sin(speed6);
        sphere7.position.x = 25*Math.cos(speed7);
        sphere7.position.z = 25*Math.sin(speed7);
        sphere8.position.x = 29*Math.cos(speed8);
        sphere8.position.z = 29*Math.sin(speed8);
        sphere9.position.x = 33*Math.cos(speed9);
        sphere9.position.z = 33*Math.sin(speed9);
        var zer2 = (sphere2.position.x/sphere2.position.z).toFixed(1);
        var zer3 = (sphere3.position.x/sphere3.position.z).toFixed(1);
        var zer4 = (sphere4.position.x/sphere4.position.z).toFixed(1);
        var zer5 = (sphere5.position.x/sphere5.position.z).toFixed(1);
        //太阳 水星 金星 地球 火星 5星连珠的时候 停止运行
        if((zer3 == zer2)&&(zer3 == zer4)&&(zer5 == zer4)){
            controls.spend = 0;
            alert("2080年 五星连珠，世界末日！");
        }

        renderer.render(scene,camera);
        requestAnimationFrame(run);
    }
    run();
</script>