效果图
demo
import './index.css';
// stats
var stats;
(function(){
stats = new Stats();
document.body.appendChild( stats.dom );
})();
// gui
var gui;
(function(){
gui = new dat.GUI();
var fn = new function() {
this.rotationSpeed = 0.02;
this.bouncingSpeed = 0.03 ;
}
gui.add(fn,'rotationSpeed', 0, 0.5);
gui.add(fn,'bouncingSpeed', 0, 0.5);
})();
// renderer
var renderer;
(function(){
renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.shadowMap.enabled = true;
renderer.setPixelRatio( window.devicePixelRatio );
renderer.gammaInput = true;
renderer.gammaOutput = true;
document.body.appendChild(renderer.domElement);
})();
// scene
var scene;
(function(){
scene = new THREE.Scene();
scene.background = new THREE.Color( 0xcce0ff );
scene.fog = new THREE.Fog( 0xcce0ff, 500, 10000 );
})();
// 相机
var camera;
(function(){
camera = new THREE.PerspectiveCamera( 30, window.innerWidth / window.innerHeight, 1, 10000 );
camera.position.set( 1000, 50, 1500 );
camera.updateMatrix();
})();
// controls
(function(){
var controls = new THREE.OrbitControls( camera, renderer.domElement );
controls.maxPolarAngle = Math.PI * 0.5;
controls.minDistance = 1000;
controls.maxDistance = 5000;
window.addEventListener('resize', function(){
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}, false);
})();
// 设置光源
(function(){
// 设置光源
var light = new THREE.DirectionalLight( 0xbbbbff, 1.5 );
light.position.set( -1000, 50, -1000 );
light.position.multiplyScalar( 1.3 );
light.castShadow = true;
var textureLoader = new THREE.TextureLoader();
var textureFlare0 = textureLoader.load( "./static/textures/lensflare/lensflare0.png" );
var textureFlare1 = textureLoader.load( "./static/textures/lensflare/lensflare2.png" );
var textureFlare2 = textureLoader.load( "./static/textures/lensflare/lensflare3.png" );
var lensflare = new THREE.Lensflare();
lensflare.addElement( new THREE.LensflareElement( textureFlare0, 512, 0 ) );
lensflare.addElement( new THREE.LensflareElement( textureFlare1, 512, 0 ) );
lensflare.addElement( new THREE.LensflareElement( textureFlare2, 60, 0.6 ) );
light.add( lensflare );
scene.add( light );
var light = new THREE.HemisphereLight( 0xbbbbff, 0x444422 );
scene.add( light );
})();
// 加载模型
var mixers = [];
var clock = new THREE.Clock();
var birdmesh;
(function(){
// 地面
var loader = new THREE.TextureLoader();
var groundTexture = loader.load( './static/textures/terrain/grasslight-big.jpg' );
groundTexture.wrapS = groundTexture.wrapT = THREE.RepeatWrapping;
groundTexture.repeat.set( 25, 25 );
groundTexture.anisotropy = 16;
var groundMaterial = new THREE.MeshLambertMaterial( { map: groundTexture } );
var mesh = new THREE.Mesh( new THREE.PlaneBufferGeometry( 20000, 20000 ), groundMaterial );
mesh.position.y = - 250;
mesh.rotation.x = - Math.PI / 2;
mesh.receiveShadow = true;
mesh.name = "ground";
scene.add( mesh );
// 鸟
var loader = new THREE.GLTFLoader();
loader.load( './static/models/gltf/Flamingo.glb', function( gltf ) {
birdmesh = gltf.scene.children[ 0 ];
var s = 0.35;
birdmesh.scale.set( s, s, s );
birdmesh.position.y = 15;
birdmesh.rotation.y = -1;
birdmesh.castShadow = true;
birdmesh.receiveShadow = true;
scene.add( birdmesh );
var mixer = new THREE.AnimationMixer( birdmesh );
mixer.clipAction( gltf.animations[ 0 ] ).setDuration( 1 ).play();
mixers.push( mixer );
} );
})();
// var rotateY = new THREE.Matrix4().makeRotationY( 0.005 );
var step = -2;
var flag = true;
var animate = function () {
requestAnimationFrame(animate);
// camera.applyMatrix( rotateY );
// camera.updateMatrixWorld();
var delta = clock.getDelta();
for ( var i = 0; i < mixers.length; i ++ ) {
mixers[ i ].update( delta );
}
if(birdmesh != null) {
if(birdmesh.position.x == -1000) {
flag = false;
}
if(birdmesh.position.x == 1000) {
flag = true;
}
if(flag){
birdmesh.rotation.y = -1;
birdmesh.position.x += step;
birdmesh.position.z -= (step+0.2);
}else {
birdmesh.rotation.y = 2.3;
birdmesh.position.x -= step;
birdmesh.position.z += (step+0.2);
}
}
stats.begin();
renderer.render( scene, camera );
stats.end();
};
animate();