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| <script> | | <canvas id="canvas" height="142px" width="673px"></canvas> |
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| //AUTHOR: SATKAR DHAKAL. YOU ARE FREE TO USE, EDIT AND MODIFY THE CODE.
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| var context=document.getElementById("canvas");
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| var canvasWidth=context.width;
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| var canvasHeight= context.height;
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| var fogCount=15;
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| var fog=new Image();
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| var mountain=new Image();
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| var fogs=[];
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| var FPS=20;
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| var maxVel=1;
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| fog.src = "https://s27.postimg.org/57e6pz0xf/fog.png";
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| mountain.src="https://s27.postimg.org/4j5c7127n/mac2.jpg" ;
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| function fogPart(){
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| this.x=0;
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| this.y=0;
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| this.xVel=0;
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| this.yVel=0;
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| this.radius=5;
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| this.draw=function(){
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| context.drawImage(this.image,this.x-100,this.y-100);
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| };
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| this.update=function(){
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| this.x += this.xVel;
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| this.y += this.yVel;
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| if (this.x >= canvasWidth) {
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| this.xVel = -this.xVel;
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| this.x = canvasWidth;
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| }
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|
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| else if (this.x <= 0) {
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| this.xVel = -this.xVel;
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| this.x = 0;
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| }
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| if (this.y >= canvasHeight) {
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| this.yVel = -this.yVel;
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| this.y = canvasHeight;
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| }
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|
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|
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| else if (this.y <= 0) {
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| this.yVel = -this.yVel;
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| this.y = 0;
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| }
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| };
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| this.setImage=function(img){
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| this.image=img;
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| };
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| this.setPos = function(x, y) {
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| this.x = x;
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| this.y = y;
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| };
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|
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| this.setVel = function(x, y) {
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| this.xVel = x;
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| this.yVel = y;
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| };
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| };
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| function random(min, max){
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| return Math.random() * (max - min) + min;
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| }
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| function init() {
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| if (canvas.getContext) {
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| context = canvas.getContext('2d');
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| for(var i=0; i < fogCount; i++){
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| var fog = new fogPart();
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| fog.setPos(random(0, canvasWidth), random(0, canvasHeight));
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|
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| fog.setVel(random(-maxVel, maxVel), random(-maxVel, maxVel));
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| fogs.push(fog);
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| }
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| }
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| else {
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| alert("UN-supported browser");
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| }
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| };
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| fog.onload=function(){
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| fogs.forEach(function(part){
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| part.setImage(fog);
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| });
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| };
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| function draw(){
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| context.drawImage(mountain,0,0);
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| context.globalAlpha = 0.09;
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| fogs.forEach(function(part) {
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| part.draw();
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| });
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| };
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| function update(){
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| fogs.forEach(function(part){
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| part.update();
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| });
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| };
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| init();
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| if (context) {
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| setInterval(function() {
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| update();draw();
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| }, 1000 / FPS);
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| }
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| </script>
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| <canvas id="canvas" width="750" height="390"></canvas>
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