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globe.html
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globe.html
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<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="utf-8">
<title>Globe and Texture</title>
<style>
div {
border : 1px solid;
}
</style>
</head>
<body>
<div id="webgl_view"></div>
<script type="text/javascript" src="three.js" charset="utf-8"></script>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
<script>
var height = 640;
var width = 640;
var container = $('#webgl_view');
container.css({
height : height + "px",
width : width + "px"});
// (1) 球体
var geometry = new THREE.SphereGeometry(1, 32, 32);
var material = new THREE.MeshPhongMaterial({
map: THREE.ImageUtils.loadTexture('land_shallow_topo_2048.jpg') });
var sphere = new THREE.Mesh(geometry, material);
// (2) ライト（平行光)
var light = new THREE.DirectionalLight(0xffffff);
light.position.x = Math.sin(Math.PI * 23.4 / 180.0);
light.position.y = Math.cos(Math.PI * 23.4 / 180.0);
light.position.z = 0;
// (3) 環境光
var alight = new THREE.AmbientLight(0x444444);
// (4) Scene
var scene = new THREE.Scene();
scene.add(sphere);
scene.add(light);
scene.add(alight);
// (5) Camera (視野角, アスペクト比(縦横比), 描画対象(最小距離), 描画対象(最大距離)
var camera = new THREE.PerspectiveCamera(90, (height / width), 0.1, 10);
// (6) WebGL Renderer
var renderer = new THREE.WebGLRenderer();
renderer.setSize(height, width);
renderer.setClearColor(0x101010);
renderer.clear(true);
container.append(renderer.domElement);
// (7) Animation (Rotate)
function animation() {
var time = (new Date()).getTime();
sphere.rotation.y = time / 3000;
camera.position.x = 1.5 * Math.sin(-1.0 * time / 10000);
camera.position.y = 1.0 * Math.sin(time / 10000);
camera.position.z = 1.5 * Math.cos(-1.0 * time / 10000);
camera.lookAt(new THREE.Vector3(-1.0 * camera.position.x,-1.0 * camera.position.y,-1.0 * camera.position.z));
renderer.render(scene, camera);
requestAnimationFrame(animation);
}
animation();
</script>
</body>
</html>