小猫抓毛线球开源

来源：互联网发布：淘宝怎么看交易记录编辑：程序博客网时间：2024/04/19 17:27

<!DOCTYPE html>

<html >

<head>

<style>

@import url(http://fonts.googleapis.com/css?family=Open+Sans:800);

#world{

position: absolute;

width:100%;

height: 100%;

background-color: #6ecccc;

overflow:hidden;

}

#credits{

position:absolute;

width:100%;

margin: auto;

bottom:0;

margin-bottom:20px;

font-family:'Open Sans', sans-serif;

color:#328685;

font-size:0.7em;

text-transform: uppercase;

text-align : center;

}

#credits a {

color:#328685;

}

#credits a:hover {

color:#630d15;

}

</style>

</head>

<body>

//THREEJS RELATED VARIABLES

var scene,

camera, fieldOfView, aspectRatio, nearPlane, farPlane,

gobalLight, shadowLight, backLight,

renderer,

container,

controls;

//SCREEN & MOUSE VARIABLES

var HEIGHT, WIDTH, windowHalfX, windowHalfY,

mousePos = { x: 0, y: 0 },

oldMousePos = {x:0, y:0},

ballWallDepth = 28;

//3D OBJECTS VARIABLES

var hero;

//INIT THREE JS, SCREEN AND MOUSE EVENTS

function initScreenAnd3D() {

HEIGHT = window.innerHeight;

WIDTH = window.innerWidth;

windowHalfX = WIDTH / 2;

windowHalfY = HEIGHT / 2;

scene = new THREE.Scene();

aspectRatio = WIDTH / HEIGHT;

fieldOfView = 50;

nearPlane = 1;

farPlane = 2000;

camera = new THREE.PerspectiveCamera(

fieldOfView,

aspectRatio,

nearPlane,

farPlane

);

camera.position.x = 0;

camera.position.z = 300;

camera.position.y = 250;

camera.lookAt(new THREE.Vector3(0, 60, 0));

renderer = new THREE.WebGLRenderer({ alpha: true, antialias: true });

renderer.setSize(WIDTH, HEIGHT);

renderer.shadowMapEnabled = true;

container = document.getElementById('world');

container.appendChild(renderer.domElement);

window.addEventListener('resize', handleWindowResize, false);

document.addEventListener('mousemove', handleMouseMove, false);

document.addEventListener('touchmove', handleTouchMove, false);

controls = new THREE.OrbitControls(camera, renderer.domElement);

controls.minPolarAngle = -Math.PI / 2;

controls.maxPolarAngle = Math.PI / 2;

controls.noZoom = true;

controls.noPan = true;

//*/

}

function handleWindowResize() {

HEIGHT = window.innerHeight;

WIDTH = window.innerWidth;

windowHalfX = WIDTH / 2;

windowHalfY = HEIGHT / 2;

renderer.setSize(WIDTH, HEIGHT);

camera.aspect = WIDTH / HEIGHT;

camera.updateProjectionMatrix();

}

function handleMouseMove(event) {

mousePos = {x:event.clientX, y:event.clientY};

}

function handleTouchMove(event) {

if (event.touches.length == 1) {

event.preventDefault();

mousePos = {x:event.touches[0].pageX, y:event.touches[0].pageY};

}

function createLights() {

globalLight = new THREE.HemisphereLight(0xffffff, 0xffffff, .5)

shadowLight = new THREE.DirectionalLight(0xffffff, .9);

shadowLight.position.set(200, 200, 200);

shadowLight.castShadow = true;

shadowLight.shadowDarkness = .2;

shadowLight.shadowMapWidth = shadowLight.shadowMapHeight = 2048;

backLight = new THREE.DirectionalLight(0xffffff, .4);

backLight.position.set(-100, 100, 100);

backLight.castShadow = true;

backLight.shadowDarkness = .1;

backLight.shadowMapWidth = shadowLight.shadowMapHeight = 2048;

scene.add(globalLight);

scene.add(shadowLight);

scene.add(backLight);

}

function createFloor(){

floor = new THREE.Mesh(new THREE.PlaneBufferGeometry(1000,1000), new THREE.MeshBasicMaterial({color: 0x6ecccc}));

floor.rotation.x = -Math.PI/2;

floor.position.y = 0;

floor.receiveShadow = true;

scene.add(floor);

}

function createHero() {

hero = new Cat();

scene.add(hero.threeGroup);

}

function createBall() {

ball = new Ball();

scene.add(ball.threeGroup);

}

// BALL RELATED CODE

var woolNodes = 10,

woolSegLength = 2,

gravity = -.8,

accuracy =1;

Ball = function(){

var redMat = new THREE.MeshLambertMaterial ({

color: 0x630d15,

shading:THREE.FlatShading

});

var stringMat = new THREE.LineBasicMaterial({

color: 0x630d15,

linewidth: 3

});

this.threeGroup = new THREE.Group();

this.ballRay = 8;

this.verts = [];

// string

var stringGeom = new THREE.Geometry();

for (var i=0; i< woolNodes; i++ ){

var v = new THREE.Vector3(0, -i*woolSegLength, 0);

stringGeom.vertices.push(v);

var woolV = new WoolVert();

woolV.x = woolV.oldx = v.x;

woolV.y = woolV.oldy = v.y;

woolV.z = 0;

woolV.fx = woolV.fy = 0;

woolV.isRootNode = (i==0);

woolV.vertex = v;

if (i > 0) woolV.attach(this.verts[(i - 1)]);

this.verts.push(woolV);

}

this.string = new THREE.Line(stringGeom, stringMat);

// body

var bodyGeom = new THREE.SphereGeometry(this.ballRay, 5,4);

this.body = new THREE.Mesh(bodyGeom, redMat);

this.body.position.y = -woolSegLength*woolNodes;

var wireGeom = new THREE.TorusGeometry( this.ballRay, .5, 3, 10, Math.PI*2 );

this.wire1 = new THREE.Mesh(wireGeom, redMat);

this.wire1.position.x = 1;

this.wire1.rotation.x = -Math.PI/4;

this.wire2 = this.wire1.clone();

this.wire2.position.y = 1;

this.wire2.position.x = -1;

this.wire1.rotation.x = -Math.PI/4 + .5;

this.wire1.rotation.y = -Math.PI/6;

this.wire3 = this.wire1.clone();

this.wire3.rotation.x = -Math.PI/2 + .3;

this.wire4 = this.wire1.clone();

this.wire4.position.x = -1;

this.wire4.rotation.x = -Math.PI/2 + .7;

this.wire5 = this.wire1.clone();

this.wire5.position.x = 2;

this.wire5.rotation.x = -Math.PI/2 + 1;

this.wire6 = this.wire1.clone();

this.wire6.position.x = 2;

this.wire6.position.z = 1;

this.wire6.rotation.x = 1;

this.wire7 = this.wire1.clone();

this.wire7.position.x = 1.5;

this.wire7.rotation.x = 1.1;

this.wire8 = this.wire1.clone();

this.wire8.position.x = 1;

this.wire8.rotation.x = 1.3;

this.wire9 = this.wire1.clone();

this.wire9.scale.set(1.2,1.1,1.1);

this.wire9.rotation.z = Math.PI/2;

this.wire9.rotation.y = Math.PI/2;

this.wire9.position.y = 1;

this.body.add(this.wire1);

this.body.add(this.wire2);

this.body.add(this.wire3);

this.body.add(this.wire4);

this.body.add(this.wire5);

this.body.add(this.wire6);

this.body.add(this.wire7);

this.body.add(this.wire8);

this.body.add(this.wire9);

this.threeGroup.add(this.string);

this.threeGroup.add(this.body);

this.threeGroup.traverse( function ( object ) {

if ( object instanceof THREE.Mesh ) {

object.castShadow = true;

object.receiveShadow = true;

}});

}

The next part of the code is largely inspired by this codepen :

http://codepen.io/dissimulate/pen/KrAwx?editors=001

thanks to dissimulate for his great work

Permission is hereby granted, free of charge, to any person obtaining a copy

of this software and associated documentation files (the "Software"), to deal

in the Software without restriction, including without limitation the rights

to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

copies of the Software, and to permit persons to whom the Software is

furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in

all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

THE SOFTWARE.

WoolVert = function(){

this.x = 0;

this.y = 0;

this.z = 0;

this.oldx = 0;

this.oldy = 0;

this.fx = 0;

this.fy = 0;

this.isRootNode = false;

this.constraints = [];

this.vertex = null;

}

WoolVert.prototype.update = function(){

var wind = 0;//.1+Math.random()*.5;

this.add_force(wind, gravity);

nx = this.x + ((this.x - this.oldx)*.9) + this.fx;

ny = this.y + ((this.y - this.oldy)*.9) + this.fy;

this.oldx = this.x;

this.oldy = this.y;

this.x = nx;

this.y = ny;

this.vertex.x = this.x;

this.vertex.y = this.y;

this.vertex.z = this.z;

this.fy = this.fx = 0

}

WoolVert.prototype.attach = function(point) {

this.constraints.push(new Constraint(this, point));

};

WoolVert.prototype.add_force = function(x, y) {

this.fx += x;

this.fy += y;

};

Constraint = function(p1, p2) {

this.p1 = p1;

this.p2 = p2;

this.length = woolSegLength;

};

Ball.prototype.update = function(posX, posY, posZ){

var i = accuracy;

while (i--) {

var nodesCount = woolNodes;

while (nodesCount--) {

var v = this.verts[nodesCount];

if (v.isRootNode) {

v.x = posX;

v.y = posY;

v.z = posZ;

}

else {

var constraintsCount = v.constraints.length;

while (constraintsCount--) {

var c = v.constraints[constraintsCount];

var diff_x = c.p1.x - c.p2.x,

diff_y = c.p1.y - c.p2.y,

dist = Math.sqrt(diff_x * diff_x + diff_y * diff_y),

diff = (c.length - dist) / dist;

var px = diff_x * diff * .5;

var py = diff_y * diff * .5;

c.p1.x += px;

c.p1.y += py;

c.p2.x -= px;

c.p2.y -= py;

c.p1.z = c.p2.z = posZ;

}

if (nodesCount == woolNodes-1){

this.body.position.x = this.verts[nodesCount].x;

this.body.position.y = this.verts[nodesCount].y;

this.body.position.z = this.verts[nodesCount].z;

this.body.rotation.z += (v.y <= this.ballRay)? (v.oldx-v.x)/10 : Math.min(Math.max( diff_x/2, -.1 ), .1);

}

if (v.y < this.ballRay) {

v.y = this.ballRay;

}

nodesCount = woolNodes;

while (nodesCount--) this.verts[nodesCount].update();

this.string.geometry.verticesNeedUpdate = true;

}

Ball.prototype.receivePower = function(tp){

this.verts[woolNodes-1].add_force(tp.x, tp.y);

}

// Enf of the code inspired by dissmulate

// Make everything work together :

var t=0;

function loop(){

render();

t+=.05;

hero.updateTail(t);

var ballPos = getBallPos();

ball.update(ballPos.x,ballPos.y, ballPos.z);

ball.receivePower(hero.transferPower);

hero.interactWithBall(ball.body.position);

requestAnimationFrame(loop);

}

function getBallPos(){

var vector = new THREE.Vector3();

vector.set(

( mousePos.x / window.innerWidth ) * 2 - 1,

- ( mousePos.y / window.innerHeight ) * 2 + 1,

0.1 );

vector.unproject( camera );

var dir = vector.sub( camera.position ).normalize();

var distance = (ballWallDepth - camera.position.z) / dir.z;

var pos = camera.position.clone().add( dir.multiplyScalar( distance ) );

return pos;

}

function render(){

if (controls) controls.update();

renderer.render(scene, camera);

}

window.addEventListener('load', init, false);

function init(event){

initScreenAnd3D();

createLights();

createFloor()

createHero();

createBall();

loop();

}

</script>

</body>

</html>

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