WebVisuals/Frozen_Forest.html at master · Thibaut-H/WebVisuals · GitHub

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<!DOCTYPE html>
<html>

<head>
    <title>Frozen Forest</title>
    <script src="http://threejs.org/build/three.min.js"></script>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
    <script src="https://rawgithub.com/mrdoob/three.js/master/examples/js/SimplexNoise.js"></script>
    <script src="https://threejs.org/examples/js/controls/OrbitControls.js"></script>
    <link href='https://fonts.googleapis.com/css?family=Pacifico' rel='stylesheet' type='text/css'>

</head>
<style>
    body {
            margin: 0;
            overflow: hidden;
            background-color: #000000;
    }
    body, html{
        background-color: black;
        text-align: center;
        font-family: 'Ropa Sans', sans-serif;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        -khtml-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }
</style>
<body>
<div id="WebGL-output">
</div>

<script type="text/javascript">
    $(document).ready(function(e) {
    });
    var camera;
    var webGLRenderer;
    function init() {
        ThreeSimplexNoise = SimplexNoise;
        threeSimplex = new ThreeSimplexNoise();
        var scene = new THREE.Scene();
        camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000);
        webGLRenderer = new THREE.WebGLRenderer();
        webGLRenderer.setClearColor(new THREE.Color(0x3f547a));
        webGLRenderer.setSize(window.innerWidth, window.innerHeight);
        scene.fog = new THREE.Fog( 0x3f547a, 300, 500 );
        camera.position.x = 150;
        camera.position.y = 100;
        camera.position.z = 150;

        camera.rotation.y += 0.25;
        camera.rotation.x -= 0.25;
        var light	= new THREE.AmbientLight( 0x888888 );
	    scene.add( light );
        var cameraControls;
        cameraControls = new THREE.OrbitControls(camera, webGLRenderer.domElement);
        document.getElementById("WebGL-output").appendChild(webGLRenderer.domElement);
        var cloud;
        var trees;

        createParticles(2.5, true, 0.8, true, true, 0xffffff, 0);
        createParticles(.8, true, 0.6, true, true, 0xffffff, 1);

        render();
        function createParticles(size, transparent, opacity, vertexColors, sizeAttenuation, color, type) {
            var geom = new THREE.Geometry();
            var material = new THREE.PointsMaterial({
                size: size,
                transparent: transparent,
                opacity: opacity,
                vertexColors: vertexColors,
                sizeAttenuation: sizeAttenuation,
                color: color
            });
            if(type){
                createSnowVerts(geom);
                cloud = new THREE.Points(geom, material);
                cloud.name = "particles";
                scene.add(cloud);
            }
            else{
                createTreeVerts(geom);
                trees = new THREE.Points(geom, material);
                trees.name = "particles";
                scene.add(trees);
            }
        }//end createParticles

        function createTreeVerts(geom){
            for (var i = -500; i < 500; i++) {
                for (var j = -500; j < 500; j++) {
                    var z = threeSimplex.noise(i/8, j/8);
                    var particle = new THREE.Vector3(i,z*10,j);
                    geom.vertices.push(particle);
                    var color = new THREE.Color(0.25+z, 0.4+z, 0.52+z);
                    color.setHSL(color.getHSL().h, color.getHSL().s, color.getHSL().l);
                    geom.colors.push(color);
                }
            }
        }//end createTreeVerts

        function createSnowVerts(geom){
            var range = 1000;
            for (var i = 0; i < 300000; i++) {
                var particle = new THREE.Vector3(
                    Math.random() * range - range / 2,
                    Math.abs(Math.random() * range - range / 2) + 20,
                    Math.random() * range - range / 2);
                geom.vertices.push(particle);
                var color = new THREE.Color(0xffffff);
                color.setHSL(color.getHSL().h, color.getHSL().s, color.getHSL().l);
                geom.colors.push(color);
            }
        }//end createSnowVerts

        function render() {
            trees.rotation.y -= 0.001;
            cloud.rotation.y -= 0.0015;
            requestAnimationFrame(render);
            webGLRenderer.render(scene, camera);
        }
    }//end init
        function onResize() {
            camera.aspect = window.innerWidth / window.innerHeight;
            camera.updateProjectionMatrix();
            webGLRenderer.setSize(window.innerWidth, window.innerHeight);
        }//end onResize

    window.onload = init;
    window.addEventListener('resize', onResize, false);
</script>
</body>
</html>