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three-onevent

Add an EventListener for Object3d in your three.js project.(support click,hover or gaze)

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48

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3yrs ago

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2

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1.0KB

License

MIT

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three-onEvent

Add an EventListener for Object3d (Mesh,Group) in your three.js project.

Installation

$ npm install three-onevent --save
# or
$ yarn add three-onevent
# or add onEvent.js with '<script>' tag

Get Started

It can be loaded as:

  • require ('three-onevent.js') or import 'three-onevent.js' as a module in webpack or rollup
  • use onEvent.js in browser <script src ='three-onevent/onEvent.js'>

Tutorial

  • make sure you have import three.js. See examples

1. Init onEvent

var scene = new THREE.Scene()
var camera = new THREE.PerspectiveCamera(fov,window.innerWidth/window.innerHeight,0.1,10000);
camera.position.set( 0, 0, 0 );
scene.add(camera);
var renderer = new THREE.WebGLRenderer({ antialias: true } );
renderer.setSize(window.innerWidth,window.innerHeight);
renderer.setPixelRatio(window.devicePixelRatio);

// init your events container before renderer.render()
// Require THREE.scene and THREE.camera as param
var threeOnEvent = new THREE.onEvent(scene,camera);

...

function animate() {
  requestAnimationFrame(render);
  renderer.render();
}
animate();

2. Add eventListener with 'on'

object3d.on(method:string,callback:function)

var geo = new THREE.CubeGeometry(5,5,5);
var mat = new THREE.MeshBasicMaterial({color:0x00aadd});
var mesh = new THREE.Mesh(geo,mat);
scene.add(mesh);
mesh.on('click',function(m) {
  m.scale.set(2,2,2); // m is link to mesh
})

3. Remove event with 'off' from Object3d

mesh.off('click'); // remove click event from mesh
mesh.off(); // remove all events from mesh

4. Remove all events

//remove all events from all Object3d
threeOnEvent.removeAll();

More Method

method: string 'click','hover','gaze'

  • click
  • hover
  • gaze
// hover eventLisener 
mesh.on('hover',function(m) {
  // mouse enter the mesh
  m.scale.set(2,2,2); 
},function(m) {
  // mouse leave out the mesh
  m.scale.set(1,1,1);
});
// webvr gaze eventListener
mesh.on('gaze',function(m) {
  // mesh is gazed in
  m.material.color = 0x00ddaa;
},function(m) {
  // mesh is gazed out
  m.material.color = 0x00aadd;
});
// render loop
function animate() {
  requestAnimationFrame(render);
  renderer.render();
  // update gaze loop 
  threeOnEvent.update(); 
}
animate();

Need Help?

Ask questions here.

Any advise?

PR welcome here.

Contributors

YoneChen yorkchan94@gmail.com

License

MIT

Please Star this Project if you like it! Following would also be appreciated!


three-onEvent中文文档

一款实用的three.js监听事件插件,支持3d物体(mesh,group)点击、悬停、凝视事件绑定。

安装

$ npm install three-onevent --save
# 或者
$ yarn add three-onevent
# 或者在页面引入 '<script type="javascript "src="onEvent.js">'

开始

引用方式

  •   1.node:webpack或者rollup模块引入:require ('three-onevent.js') 或者 import 'three-onevent.js'
  •   2.浏览器:在html引入onEvent.js <script src ='three-onevent/onEvent.js'>

初始化

  • 请确保已经引用three.js. See examples

    使用方法:THREE.onEvent(scene:THREE.Scene,camera:THREE.Camera);

var scene = new THREE.Scene()
var camera = new THREE.PerspectiveCamera(fov,window.innerWidth/window.innerHeight,0.1,10000);
camera.position.set( 0, 0, 0 );
scene.add(camera);
var renderer = new THREE.WebGLRenderer({ antialias: true } );
renderer.setSize(window.innerWidth,window.innerHeight);
renderer.setPixelRatio(window.devicePixelRatio);

// 在render渲染之前初始化
// 传入场景和相机
var threeOnEvent = new THREE.onEvent(scene,camera);

// 动画渲染
function animate() {
  requestAnimationFrame(render);
  renderer.render();
}
animate();

绑定事件 "on"

object3d.on(method:string,callback:function) 这里的object3d指的是THREE.Object3d的实例

// 给一个立方体绑定点击事件
var geo = new THREE.CubeGeometry(5,5,5);
var mat = new THREE.MeshBasicMaterial({color:0x00aadd});
var mesh = new THREE.Mesh(geo,mat);
mesh.on('click',function(m) {
  m.scale.set(2,2,2); // m指向mesh
})
scene.add(mesh);

移除事件 "off"

使用方法: mesh.off(method:stiring)

//移除点击事件
mesh.off('click');
//参数为空则移除所有绑定事件
mesh.off();

移除所有物体监听器

//移除已绑定的所有事件
threeOnEvent.removeAll();

method可选参数

method: string 'click','hover','gaze'

// hover鼠标悬停监听 
mesh.on('hover',function(m) {
  // mouse enter the mesh
  m.scale.set(2,2,2); 
},function(m) {
  // mouse leave out the mesh
  m.scale.set(1,1,1);
});
// webvr gaze凝视监听
mesh.on('gaze',function(m) {
  // mesh is gazed in
  m.material.color = 0x00ddaa;
},function(m) {
  // mesh is gazed out
  m.material.color = 0x00aadd;
});
// 动画渲染
function animate() {
  requestAnimationFrame(render);
  renderer.render();
  // 更新gaze凝视流 
  threeOnEvent.update(); 
}
animate();

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