摘要：
Git基础 什么是git? git是一个版本控制系统,也可以说当你的代码发生变化进行管理的工具.在git出现之前这样的工具SVN,CVS. git和github的区别, 简单来说,git是一个版本控制的工具,github是一个代码托管平台,一个代码仓库. 用git管理项目 首先进入项目目录,启动gi
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posted @ 2019-04-15 22:38
FindSoul
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摘要：
Ansible-playbook简介 什么是playbook? 简单点说,playbook就是ansible用于配置,部署和管控节点机器的剧本,将一系列命令的集合归一使用,类似于shell脚本,不过更加强大. playbook与shell脚本比对 它们功能形似,playbook和shell脚本一样,
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posted @ 2019-04-11 21:07
FindSoul
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摘要：
ansible背景 1.什么是ansible? ansible是新出现的自动化运维工具，基于Python开发，集合了众多运维工具（puppet、cfengine、chef、func、fabric）的优点，实现了批量系统配置、批量程序部署、批量运行命令等功能。 2.ansible的是怎么工作的? an
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posted @ 2019-04-09 17:16
FindSoul
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摘要：
什么是HBuilder? HBbuilder是DCloud(数字天堂)推出的一款支持HTML5的WEB开发IDE,主体是由java编写的,它将HTML/JS代码块进行代码封装,达到简单数据形成代码的特点,对开发者特别友好. MUI? 移动APP布局框架, - 最接近原生APP操作 HTMLPLUS
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posted @ 2019-03-28 18:24
FindSoul
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MongoDB背景 MongoDB是一个很有意思的数据库,一个介于关系型数据库和非关系型数据库之间,但它是(NoSQL)非关系数据库且功能最丰富,最接近关系的数据库,它的数据就是存放在内存中,对数据的操作大部分在内存中,但MongoDB并不是单纯的内存数据库,MongoDB是由C++编写的,是一个基
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posted @ 2019-03-27 16:44
FindSoul
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AI背景 在当今互联网信息高速发展的大背景下,人工智能(AI)已经开始走进了千家万户,逐渐和我们的生活接轨,那具体什么是AI呢? 什么是人工智能(AI)? 人工智能:简单理解就是由人制造出来的,有一定的''智慧能力'',不过它同样类似人类一样具备:听、说、看、思考、理解等能力! 身边的人工智能有哪些
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posted @ 2019-03-25 18:07
FindSoul
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websocket是什么? web-socket是HTML5提出的一个协议规范,实现了浏览器和服务器之间的全双工通信web-socket约定了一个通信的规范,通过一个握手的机制,客户端(浏览器)和服务端(webserver)之间建立一个类似于tcp的连接,从而方便Client-Server,在web
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posted @ 2019-03-24 22:11
FindSoul
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Docker docker是什么? docker最初是dotCloud公司创始人Solomom Hykes在法国期间发起的一个公司内部项目,它是基于dotCloud公司多年云服务技术的一次革新,并在2013年3月以Apache2.0授权协议开源,主要项目代码在GitHub上进行维护... docke
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posted @ 2019-03-13 22:13
FindSoul
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vue + uwsgi +nginx 部署前后端分离项目 准备项目 1.将前端vue项目包和后端django项目包上传服务器,通过lrzsz,直接从windows拖进linux中 2.解压缩操作 前端vue部署 node环境准备 1.下载node二进制包,该包已经包含node,不需要再编译 # wg
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posted @ 2019-03-13 20:44
FindSoul
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NGINX是什么? nginx是开源的,支持高性能的,高并发的www服务和代理服务软件,就是web服务器,nginx不但是一个优秀的web服务软件,还可以做反向代理,负载均衡,以及缓存服务使用. 优点:支持高并发,支持几万的并发连接;资源消耗少.在3万并发连接下开启10个nginx线程消耗内存不到2
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posted @ 2019-03-12 00:50
FindSoul
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var RENDERER = {
POINT_INTERVAL : 5,
FISH_COUNT : 3,
MAX_INTERVAL_COUNT : 50,
INIT_HEIGHT_RATE : 0.5,
THRESHOLD : 50,
init : function(){
this.setParameters();
this.reconstructMethods();
this.setup();
this.bindEvent();
this.render();
},
setParameters : function(){
this.$window = $(window);
this.$container = $('#jsi-flying-fish-container');
this.$canvas = $('');
this.context = this.$canvas.appendTo(this.$container).get(0).getContext('2d');
this.points = [];
this.fishes = [];
this.watchIds = [];
},
createSurfacePoints : function(){
var count = Math.round(this.width / this.POINT_INTERVAL);
this.pointInterval = this.width / (count - 1);
this.points.push(new SURFACE_POINT(this, 0));
for(var i = 1; i < count; i++){
var point = new SURFACE_POINT(this, i * this.pointInterval),
previous = this.points[i - 1];
point.setPreviousPoint(previous);
previous.setNextPoint(point);
this.points.push(point);
}
},
reconstructMethods : function(){
this.watchWindowSize = this.watchWindowSize.bind(this);
this.jdugeToStopResize = this.jdugeToStopResize.bind(this);
this.startEpicenter = this.startEpicenter.bind(this);
this.moveEpicenter = this.moveEpicenter.bind(this);
this.reverseVertical = this.reverseVertical.bind(this);
this.render = this.render.bind(this);
},
setup : function(){
this.points.length = 0;
this.fishes.length = 0;
this.watchIds.length = 0;
this.intervalCount = this.MAX_INTERVAL_COUNT;
this.width = this.$container.width();
this.height = this.$container.height();
this.fishCount = this.FISH_COUNT * this.width / 500 * this.height / 500;
this.$canvas.attr({width : this.width, height : this.height});
this.reverse = false;
this.fishes.push(new FISH(this));
this.createSurfacePoints();
},
watchWindowSize : function(){
this.clearTimer();
this.tmpWidth = this.$window.width();
this.tmpHeight = this.$window.height();
this.watchIds.push(setTimeout(this.jdugeToStopResize, this.WATCH_INTERVAL));
},
clearTimer : function(){
while(this.watchIds.length > 0){
clearTimeout(this.watchIds.pop());
}
},
jdugeToStopResize : function(){
var width = this.$window.width(),
height = this.$window.height(),
stopped = (width == this.tmpWidth && height == this.tmpHeight);
this.tmpWidth = width;
this.tmpHeight = height;
if(stopped){
this.setup();
}
},
bindEvent : function(){
this.$window.on('resize', this.watchWindowSize);
this.$container.on('mouseenter', this.startEpicenter);
this.$container.on('mousemove', this.moveEpicenter);
this.$container.on('click', this.reverseVertical);
},
getAxis : function(event){
var offset = this.$container.offset();
return {
x : event.clientX - offset.left + this.$window.scrollLeft(),
y : event.clientY - offset.top + this.$window.scrollTop()
};
},
startEpicenter : function(event){
this.axis = this.getAxis(event);
},
moveEpicenter : function(event){
var axis = this.getAxis(event);
if(!this.axis){
this.axis = axis;
}
this.generateEpicenter(axis.x, axis.y, axis.y - this.axis.y);
this.axis = axis;
},
generateEpicenter : function(x, y, velocity){
if(y < this.height / 2 - this.THRESHOLD || y > this.height / 2 + this.THRESHOLD){
return;
}
var index = Math.round(x / this.pointInterval);
if(index < 0 || index >= this.points.length){
return;
}
this.points[index].interfere(y, velocity);
},
reverseVertical : function(){
this.reverse = !this.reverse;
for(var i = 0, count = this.fishes.length; i < count; i++){
this.fishes[i].reverseVertical();
}
},
controlStatus : function(){
for(var i = 0, count = this.points.length; i < count; i++){
this.points[i].updateSelf();
}
for(var i = 0, count = this.points.length; i < count; i++){
this.points[i].updateNeighbors();
}
if(this.fishes.length < this.fishCount){
if(--this.intervalCount == 0){
this.intervalCount = this.MAX_INTERVAL_COUNT;
this.fishes.push(new FISH(this));
}
}
},
render : function(){
requestAnimationFrame(this.render);
this.controlStatus();
this.context.clearRect(0, 0, this.width, this.height);
this.context.fillStyle = 'hsl(0, 0%, 95%)';
for(var i = 0, count = this.fishes.length; i < count; i++){
this.fishes[i].render(this.context);
}
this.context.save();
this.context.globalCompositeOperation = 'xor';
this.context.beginPath();
this.context.moveTo(0, this.reverse ? 0 : this.height);
for(var i = 0, count = this.points.length; i < count; i++){
this.points[i].render(this.context);
}
this.context.lineTo(this.width, this.reverse ? 0 : this.height);
this.context.closePath();
this.context.fill();
this.context.restore();
}
};
var SURFACE_POINT = function(renderer, x){
this.renderer = renderer;
this.x = x;
this.init();
};
SURFACE_POINT.prototype = {
SPRING_CONSTANT : 0.03,
SPRING_FRICTION : 0.9,
WAVE_SPREAD : 0.3,
ACCELARATION_RATE : 0.01,
init : function(){
this.initHeight = this.renderer.height * this.renderer.INIT_HEIGHT_RATE;
this.height = this.initHeight;
this.fy = 0;
this.force = {previous : 0, next : 0};
},
setPreviousPoint : function(previous){
this.previous = previous;
},
setNextPoint : function(next){
this.next = next;
},
interfere : function(y, velocity){
this.fy = this.renderer.height * this.ACCELARATION_RATE * ((this.renderer.height - this.height - y) >= 0 ? -1 : 1) * Math.abs(velocity);
},
updateSelf : function(){
this.fy += this.SPRING_CONSTANT * (this.initHeight - this.height);
this.fy *= this.SPRING_FRICTION;
this.height += this.fy;
},
updateNeighbors : function(){
if(this.previous){
this.force.previous = this.WAVE_SPREAD * (this.height - this.previous.height);
}
if(this.next){
this.force.next = this.WAVE_SPREAD * (this.height - this.next.height);
}
},
render : function(context){
if(this.previous){
this.previous.height += this.force.previous;
this.previous.fy += this.force.previous;
}
if(this.next){
this.next.height += this.force.next;
this.next.fy += this.force.next;
}
context.lineTo(this.x, this.renderer.height - this.height);
}
};
var FISH = function(renderer){
this.renderer = renderer;
this.init();
};
FISH.prototype = {
GRAVITY : 0.4,
init : function(){
this.direction = Math.random() < 0.5;
this.x = this.direction ? (this.renderer.width + this.renderer.THRESHOLD) : -this.renderer.THRESHOLD;
this.previousY = this.y;
this.vx = this.getRandomValue(4, 10) * (this.direction ? -1 : 1);
if(this.renderer.reverse){
this.y = this.getRandomValue(this.renderer.height * 1 / 10, this.renderer.height * 4 / 10);
this.vy = this.getRandomValue(2, 5);
this.ay = this.getRandomValue(0.05, 0.2);
}else{
this.y = this.getRandomValue(this.renderer.height * 6 / 10, this.renderer.height * 9 / 10);
this.vy = this.getRandomValue(-5, -2);
this.ay = this.getRandomValue(-0.2, -0.05);
}
this.isOut = false;
this.theta = 0;
this.phi = 0;
},
getRandomValue : function(min, max){
return min + (max - min) * Math.random();
},
reverseVertical : function(){
this.isOut = !this.isOut;
this.ay *= -1;
},
controlStatus : function(context){
this.previousY = this.y;
this.x += this.vx;
this.y += this.vy;
this.vy += this.ay;
if(this.renderer.reverse){
if(this.y > this.renderer.height * this.renderer.INIT_HEIGHT_RATE){
this.vy -= this.GRAVITY;
this.isOut = true;
}else{
if(this.isOut){
this.ay = this.getRandomValue(0.05, 0.2);
}
this.isOut = false;
}
}else{
if(this.y < this.renderer.height * this.renderer.INIT_HEIGHT_RATE){
this.vy += this.GRAVITY;
this.isOut = true;
}else{
if(this.isOut){
this.ay = this.getRandomValue(-0.2, -0.05);
}
this.isOut = false;
}
}
if(!this.isOut){
this.theta += Math.PI / 20;
this.theta %= Math.PI * 2;
this.phi += Math.PI / 30;
this.phi %= Math.PI * 2;
}
this.renderer.generateEpicenter(this.x + (this.direction ? -1 : 1) * this.renderer.THRESHOLD, this.y, this.y - this.previousY);
if(this.vx > 0 && this.x > this.renderer.width + this.renderer.THRESHOLD || this.vx < 0 && this.x < -this.renderer.THRESHOLD){
this.init();
}
},
render : function(context){
context.save();
context.translate(this.x, this.y);
context.rotate(Math.PI + Math.atan2(this.vy, this.vx));
context.scale(1, this.direction ? 1 : -1);
context.beginPath();
context.moveTo(-30, 0);
context.bezierCurveTo(-20, 15, 15, 10, 40, 0);
context.bezierCurveTo(15, -10, -20, -15, -30, 0);
context.fill();
context.save();
context.translate(40, 0);
context.scale(0.9 + 0.2 * Math.sin(this.theta), 1);
context.beginPath();
context.moveTo(0, 0);
context.quadraticCurveTo(5, 10, 20, 8);
context.quadraticCurveTo(12, 5, 10, 0);
context.quadraticCurveTo(12, -5, 20, -8);
context.quadraticCurveTo(5, -10, 0, 0);
context.fill();
context.restore();
context.save();
context.translate(-3, 0);
context.rotate((Math.PI / 3 + Math.PI / 10 * Math.sin(this.phi)) * (this.renderer.reverse ? -1 : 1));
context.beginPath();
if(this.renderer.reverse){
context.moveTo(5, 0);
context.bezierCurveTo(10, 10, 10, 30, 0, 40);
context.bezierCurveTo(-12, 25, -8, 10, 0, 0);
}else{
context.moveTo(-5, 0);
context.bezierCurveTo(-10, -10, -10, -30, 0, -40);
context.bezierCurveTo(12, -25, 8, -10, 0, 0);
}
context.closePath();
context.fill();
context.restore();
context.restore();
this.controlStatus(context);
}
};
$(function(){
RENDERER.init();
});
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