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Daily Creative Coding

元「30 min. Processing」。毎日、Creative Codingします。

Three.jsでたくさんの球

See the Pen [2017/03/18] some lights and many spheres by aadebdeb (@aadebdeb) on CodePen.

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>[2017/03/18] some lights and many spheres</title>
  <style>
    body {
      margin: 0;
      overflow: hidden;
    }
  </style>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/stats.js/r16/Stats.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/dat-gui/0.6.3/dat.gui.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/84/three.min.js"></script>
  <script>

    window.onload = function() {
      init();
      render();
    };
    window.onresize = onResize;

    var camera, scene, renderer;
    var stats;
    var controller;

    var ambientLight, PointLight;

    function init() {



      initGui();
      initStats();

      initScene();
      initCamera();
      initRenderer();
    }

    function initStats() {
      stats = new Stats();
      stats.setMode(0);
      stats.domElement.style.position = 'absolute';
      stats.domElement.style.left = '0px';
      stats.domElement.style.top = '0px';
      document.body.appendChild(stats.domElement);
    }

    function initGui() {
      controller = new function() {
        this.clearColor = '#999999';
        this.materialColor = '#ff0000';
        this.ambientColor = '#666666';
        this.ambientIntensity = 1;
        this.pointColor = '#00ff00';
        this.pointIntensity = 1;
      };

      gui = new dat.GUI();
      gui.addColor(controller, 'clearColor').onChange(function(e) {
        renderer.setClearColor(e);
      });
      gui.addColor(controller, 'materialColor').onChange(function(e) {
        scene.traverse(function(obj) {
          if (obj instanceof THREE.Mesh) {
            obj.material.color = new THREE.Color(e);
          }
        });
      });
      gui.addColor(controller, 'ambientColor').onChange(function(e) {
        ambientLight.color = new THREE.Color(e);
      });
      gui.add(controller, 'ambientIntensity', 0, 10).onChange(function(e)  {
        ambientLight.intensity = e;
      })
      gui.addColor(controller, 'pointColor').onChange(function(e) {
        pointLight.color = new THREE.Color(e);
      });
      gui.add(controller, 'pointIntensity', 0, 10).onChange(function(e)  {
        pointLight.intensity = e;
      })
    }

    function initRenderer() {
      renderer = new THREE.WebGLRenderer();
      renderer.setClearColor(new THREE.Color(controller.clearColor));
      renderer.setSize(window.innerWidth, window.innerHeight);
      document.body.appendChild(renderer.domElement);
    }

    function initCamera() {
      camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000);
      camera.position.set(0, 0, 200);
      camera.lookAt(0, 0, 0);
    }

    function initScene() {
      scene = new THREE.Scene();
      for (var i = 0; i < 1000; i++) {
        var sphere = new THREE.Mesh(
          new THREE.SphereGeometry(5),
          new THREE.MeshPhongMaterial({color: new THREE.Color(controller.materialColor)})
        );
        sphere.position.set(
          getRandom(-100, 100),
          getRandom(-100, 100),
          getRandom(-100, 100)
        );
        scene.add(sphere);
      }

      ambientLight = new THREE.AmbientLight(new THREE.Color(controller.ambientColor));
      ambientLight.intensity = controller.ambientIntensity;
      scene.add(ambientLight);

      pointLight = new THREE.SpotLight(new THREE.Color(controller.pointColor));
      pointLight.position.set(200, 200, 200);
      pointLight.intensty = controller.pointIntensity;
      scene.add(pointLight);
    }

    function getRandom(min, max) {
      return Math.random() * (max - min) + min;
    }



    function render() {
      renderer.setClearColor(controller.clearColor);
      stats.update();
      renderer.render(scene, camera);
      requestAnimationFrame(render);
    }


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

  </script>
</head>
<body>
</body>
</html>
f:id:aa_debdeb:20170318172115p:plain