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Html5 序列帧动画
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<!DOCTYPE html><html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title>物联网金融</title>
<style>
* {
margin: 0;
padding: 0;
} html, body {
height: 100%;
width: 100%;
} canvas {
display: block;
}
</style>
</head>
<body>
<audio id="myBJAudio" controls preload="auto" autoplay loop style="display: none" src="SceneTwo/BJ.mp3">
Your browser does not support the audio element.
</audio>
<audio id="myLockAudio" controls preload="auto" style="display: none" src="SceneTwo/LOCK.wav">
Your browser does not support the audio element.
</audio>
<canvas id="canvas">
<p>Your browser does not support the canvas element!</p>
</canvas>
<script type="text/javascript">
var canvas;//画布 var SceneSwitch = 1;//动画选择
var FrameSecond = 60;//更新时间（毫秒）
var AnimController;//动画控制 //定义5个动画
var Anim1,Anim2,Anim3,Anim4,Anim5; //动画控制函数
function Controller(){
switch(SceneSwitch){
case 1:
Anim3.Draw();
break;
case 2:
Anim3.Draw();
Anim1.Draw();
break;
case 3:
Anim3.Draw();
Anim1.Draw();
Anim2.Draw();
break;
case 4:
Anim1.Draw();
Anim2.Draw();
Anim3.Draw();
Anim4.Draw();
break;
default:
Anim5.Draw();
break;
} //不断刷新
AnimController = setTimeout("Controller()",FrameSecond);
} window.onload = function () {
canvas = document.getElementById("canvas");
canvas.width = document.body.clientWidth;
canvas.height = document.body.clientHeight; //绘制背景
DrawBackground(); //实例化动画对象
Anim1 = new PicAnim("SceneOne/ShangHai/",1,74,20,0,2720,canvas.height);
//初始化+启用循环（24帧到74帧循环）
Anim1.Init().SetLoop(true,24,74); Anim2 = new PicAnim("SceneOne/Dollor/",1,64,Anim1.X+Anim1.Width,0,1000,canvas.height);
Anim2.Init().SetLoop(false); //设置下一个动画
Anim1.Next = Anim2; Anim3 = new PicAnim("SceneOne/BallX/",1,161,Anim2.X+Anim2.Width,0,3200,canvas.height);
Anim3.Init().SetLoop(false); Anim4 = new PicAnim("SceneOne/Map/",1,52,Anim3.X+Anim3.Width,0,2600,canvas.height);
Anim4.Init().SetLoop(false); Anim5 = new PicAnim("SceneTwo/Pictures/IMG",1,2500,0,0,canvas.width,canvas.height);
Anim5.Init().SetLoop(true,2200,2500);
Anim5.LoopType = 2;//循环方式，1双向循环，2单向循环
Anim5.Width = canvas.width;//设置画面宽度
Anim5.HasBack = true;//是否有背景，如果有则不会调用背景绘制函数
Anim5.Format=2;//设置文件命名格式
Anim5.Extenes = ".jpg";//序列帧后缀名
Anim5.Keys.push(250);//关键帧，到帧停止，S键再次启动 //启动动画控制
AnimController = setTimeout("Controller()",FrameSecond);
} //动画对象，路径、第一张图片名，最后一张图片名，x轴，y轴，宽度，高度
//*图片都是通过数字进行顺序命名
function PicAnim(path,min,max,x,y,w,h){
this.Path = path;
this.Index = min;
this.MinIndex = min;
this.MaxIndex = max;
this.X = x;
this.Y = y;
this.Width = w;
this.Height = h;
this.Extenes = ".png";
this.Format = 1;
this.Picture = new Image();
this.Loading = false;
this.Drawed = true;
this.HasBack = false;
this.IsLoop = false;
this.LoopBegin = min;
this.LoopEnd = max;
this.LoopType = 1;
this.Keys = new Array();
var loopDir = 1; var obj = this; this.Init = function(){
obj.Height = canvas.height;
obj.Width = canvas.width/10240*obj.Width;
return obj;
} this.SetLoop = function(loop,loopBegin,loopEnd){
obj.IsLoop = loop;
obj.LoopBegin = loopBegin;
obj.LoopEnd = loopEnd;
return obj;
} this.Next = null;
var isNextStart = false; this.Draw = function(){
if(obj.Drawed){
obj.Drawed = false;
if(obj.Format!=1){
obj.Picture.src = obj.Path+obj.Index+obj.Extenes;
}else{
obj.Picture.src = obj.Path+"("+obj.Index+")"+obj.Extenes;
}
obj.Picture.onload = function(){
var context = canvas.getContext("2d"); if(!obj.HasBack)
DrawAreaBack(obj.X,obj.Y,obj.Width,obj.Height); context.drawImage(obj.Picture,obj.X,obj.Y,obj.Width,obj.Height); if(false==isNextStart&&null!=obj.Next&&obj.Index>=obj.MaxIndex){
isNextStart=true;
SceneSwitch++;
} if(obj.IsLoop){
obj.Index+=loopDir; //Begin 场景2 跳帧专用
if (obj.Index == 1160)
document.getElementById("myLockAudio").play();
if(obj.Index>1360&&obj.Index<2490)
obj.Index+=2;
//End if(obj.Index>=obj.LoopEnd){
if(obj.LoopType==1)
loopDir = -1;
else
obj.Index=obj.LoopBegin;
}
else if(obj.Index<=obj.LoopBegin)
loopDir = 1;
}else{
obj.Index++; if(obj.Index>obj.MaxIndex){
obj.Index = obj.MaxIndex;
}
} if(obj.Keys.length>0){
var i=0;
for(;i<obj.Keys.length;i++){
if(obj.Keys[i]==obj.Index)
break;
} if(i<obj.Keys.length)
obj.Drawed=false;
else
obj.Drawed=true;
}else{
obj.Drawed = true;
}
}
}
}
} function DrawBackground() {
DrawAreaBack(0,0,canvas.width,canvas.height);
} function DrawAreaBack(x,y,w,h){
var context = canvas.getContext("2d");
var linearGradient1 = context.createLinearGradient(0, canvas.height, 0, 0);
linearGradient1.addColorStop(0, 'rgb(0, 7, 17)');
linearGradient1.addColorStop(0.5, 'rgb( 3, 26, 60)');
context.fillStyle = linearGradient1;
context.fillRect(x, y, w, h);
} window.onkeydown = disableRefresh;
function disableRefresh(evt) {
evt = (evt) ? evt : window.event
if (evt.keyCode) {
if (evt.keyCode == 83) {
if(SceneSwitch<5)
SceneSwitch++;
else{
Anim5.Index = Anim5.Keys[0]+1;
Anim5.Drawed = true;
}
}
}
}
</script>
</body>
</html>
