<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Point</title>
<script src="../../three-part/threejs/three.js"></script>
<script src="../../three-part/utils/stats.min.js"></script>
<script src="../../three-part/utils/dat.gui.min.js"></script>
<script src="../controls/TrackballControls.js"></script>
<script src="../util/util.js"></script>
<style>
body {
margin: 0;
overflow: hidden;
}
</style>
</head>
<body>
<div id="container"></div>
<script type="text/javascript">
init();
function init() {
// show FPS
let stats = initStats();
// resize
window.addEventListener('resize', onResize, false);
let scene = new THREE.Scene();
let camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000);
camera.position.x = 0;
camera.position.y = 0;
camera.position.z = 150;
camera.lookAt(scene.position);
let renderer = new THREE.WebGLRenderer();
renderer.setClearColor(new THREE.Color(0x000000));
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.shadowMap.enabled = true;
document.getElementById("container").appendChild(renderer.domElement);
// init trackball control
let trackballControls = initTrackballControls(camera, renderer);
let clock = new THREE.Clock();
createPoints();
// attributes which can be modified in GUI
const controls = {
};
// init GUI
initGUI();
renderScene();
function initGUI(){
let gui = new dat.GUI();
}
function createPoints() {
let geom = new THREE.Geometry();
let material = new THREE.PointsMaterial({
size: 2,
// Defines whether vertex coloring is used. Default is THREE.NoColors.
vertexColors: THREE.VertexColors,
color: 0xffffff
});
for (let x = -15; x < 15; x++) {
for (let y = -10; y < 10; y++) {
let particle = new THREE.Vector3(x * 4, y * 4, 0);
geom.vertices.push(particle);
geom.colors.push(new THREE.Color(Math.random() * 0xffffff));
}
}
// A class for displaying points.
let points = new THREE.Points(geom, material);
scene.add(points);
}
function onResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function renderScene(){
trackballControls.update(clock.getDelta());
stats.update();
requestAnimationFrame(renderScene);
renderer.render(scene, camera);
}
}
</script>
</body>
</html>
运行结果：
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