Canvas--粒子时钟

àì夳堔傛蜴生んèń 2022-05-31 05:26 252阅读 0赞

digit.js

digit =

[

[
                [0,0,1,1,1,0,0],
                [0,1,1,0,1,1,0],
                [1,1,0,0,0,1,1],
                [1,1,0,0,0,1,1],
                [1,1,0,0,0,1,1],
                [1,1,0,0,0,1,1],
                [1,1,0,0,0,1,1],
                [1,1,0,0,0,1,1],
                [0,1,1,0,1,1,0],
                [0,0,1,1,1,0,0]
            ],//0
            [
                [0,0,0,1,1,0,0],
                [0,1,1,1,1,0,0],
                [0,0,0,1,1,0,0],
                [0,0,0,1,1,0,0],
                [0,0,0,1,1,0,0],
                [0,0,0,1,1,0,0],
                [0,0,0,1,1,0,0],
                [0,0,0,1,1,0,0],
                [0,0,0,1,1,0,0],
                [1,1,1,1,1,1,1]
            ],//1
            [
                [0,1,1,1,1,1,0],
                [1,1,0,0,0,1,1],
                [0,0,0,0,0,1,1],
                [0,0,0,0,1,1,0],
                [0,0,0,1,1,0,0],
                [0,0,1,1,0,0,0],
                [0,1,1,0,0,0,0],
                [1,1,0,0,0,0,0],
                [1,1,0,0,0,1,1],
                [1,1,1,1,1,1,1]
            ],//2
            [
                [1,1,1,1,1,1,1],
                [0,0,0,0,0,1,1],
                [0,0,0,0,1,1,0],
                [0,0,0,1,1,0,0],
                [0,0,1,1,1,0,0],
                [0,0,0,0,1,1,0],
                [0,0,0,0,0,1,1],
                [0,0,0,0,0,1,1],
                [1,1,0,0,0,1,1],
                [0,1,1,1,1,1,0]
            ],//3
            [
                [0,0,0,0,1,1,0],
                [0,0,0,1,1,1,0],
                [0,0,1,1,1,1,0],
                [0,1,1,0,1,1,0],
                [1,1,0,0,1,1,0],
                [1,1,1,1,1,1,1],
                [0,0,0,0,1,1,0],
                [0,0,0,0,1,1,0],
                [0,0,0,0,1,1,0],
                [0,0,0,1,1,1,1]
            ],//4
            [
                [1,1,1,1,1,1,1],
                [1,1,0,0,0,0,0],
                [1,1,0,0,0,0,0],
                [1,1,1,1,1,1,0],
                [0,0,0,0,0,1,1],
                [0,0,0,0,0,1,1],
                [0,0,0,0,0,1,1],
                [0,0,0,0,0,1,1],
                [1,1,0,0,0,1,1],
                [0,1,1,1,1,1,0]
            ],//5
            [
                [0,0,0,0,1,1,0],
                [0,0,1,1,0,0,0],
                [0,1,1,0,0,0,0],
                [1,1,0,0,0,0,0],
                [1,1,0,1,1,1,0],
                [1,1,0,0,0,1,1],
                [1,1,0,0,0,1,1],
                [1,1,0,0,0,1,1],
                [1,1,0,0,0,1,1],
                [0,1,1,1,1,1,0]
            ],//6
            [
                [1,1,1,1,1,1,1],
                [1,1,0,0,0,1,1],
                [0,0,0,0,1,1,0],
                [0,0,0,0,1,1,0],
                [0,0,0,1,1,0,0],
                [0,0,0,1,1,0,0],
                [0,0,1,1,0,0,0],
                [0,0,1,1,0,0,0],
                [0,0,1,1,0,0,0],
                [0,0,1,1,0,0,0]
            ],//7
            [
                [0,1,1,1,1,1,0],
                [1,1,0,0,0,1,1],
                [1,1,0,0,0,1,1],
                [1,1,0,0,0,1,1],
                [0,1,1,1,1,1,0],
                [1,1,0,0,0,1,1],
                [1,1,0,0,0,1,1],
                [1,1,0,0,0,1,1],
                [1,1,0,0,0,1,1],
                [0,1,1,1,1,1,0]
            ],//8
            [
                [0,1,1,1,1,1,0],
                [1,1,0,0,0,1,1],
                [1,1,0,0,0,1,1],
                [1,1,0,0,0,1,1],
                [0,1,1,1,0,1,1],
                [0,0,0,0,0,1,1],
                [0,0,0,0,0,1,1],
                [0,0,0,0,1,1,0],
                [0,0,0,1,1,0,0],
                [0,1,1,0,0,0,0]
            ],//9
            [
                [0,0,0,0],
                [0,0,0,0],
                [0,1,1,0],
                [0,1,1,0],
                [0,0,0,0],
                [0,0,0,0],
                [0,1,1,0],
                [0,1,1,0],
                [0,0,0,0],
                [0,0,0,0]
            ]//:
        ];

<!DOCTYPE html>
    <html lang="en">
    <head>
    	<meta charset="UTF-8">
    	<title>CanvasColock粒子时钟</title>
    	<style>
    		body{
    			background: greenyellow;
    		}
    	</style>
    </head>
    <body style="height:100%">
    	<canvas id="canvas" style="height:100%;"></canvas>
    </body>
    <script type="text/javascript" src="js/digit.js"></script>
    <script type="text/javascript">
    	var WINDOW_WIDTH;
    	var WINDOW_HEIGHT;
    	var RADIUS;
    	var context=canvas.getContext("2d");
    	var MARGIN_TOP;
    	var MARGIN_LEFT;
    	var showtime=new Date();
    	var balls=[];
    	const colors=["#51F511","#66FAD5","#EF1C3E","#FFFA5F","#DE48CD","#310CF2"];
    	window.onload=function(){
    		WINDOW_WIDTH=document.documentElement.clientWidth;
    		WINDOW_HEIGHT=document.documentElement.clientHeight;
    		MARGIN_LEFT=Math.round(WINDOW_WIDTH/10);
    		MARGIN_TOP=Math.round(WINDOW_HEIGHT/5);
    		RADIUS=Math.round(WINDOW_WIDTH*4/5/108)-1;
    		var canvas=document.getElementById("canvas");
    		showtime=new Date();
    		canvas.width=WINDOW_WIDTH;
    		canvas.height=WINDOW_HEIGHT;
    		setInterval(function(){
    			render(context);
    			update();
    		},50);
    	}
    	function render(cxt){
    		cxt.clearRect(0,0,WINDOW_WIDTH,WINDOW_HEIGHT);
    		var hours=parseInt(showtime.getHours());
    		var minutes=parseInt(showtime.getMinutes());
    		var seconds=parseInt(showtime.getSeconds());
    		renderDigit(MARGIN_LEFT,MARGIN_TOP,parseInt(hours/10),cxt);
    		renderDigit(MARGIN_LEFT+15*(RADIUS+1),MARGIN_TOP,parseInt(hours%10),cxt);
    		renderDigit(MARGIN_LEFT+30*(RADIUS+1),MARGIN_TOP,10,cxt);
    		renderDigit(MARGIN_LEFT+39*(RADIUS+1),MARGIN_TOP,parseInt(minutes/10),cxt);
    		renderDigit(MARGIN_LEFT+54*(RADIUS+1),MARGIN_TOP,parseInt(minutes%10),cxt);
    		renderDigit(MARGIN_LEFT+69*(RADIUS+1),MARGIN_TOP,10,cxt);
    		renderDigit(MARGIN_LEFT+78*(RADIUS+1),MARGIN_TOP,parseInt(seconds/10),cxt);
    		renderDigit(MARGIN_LEFT+93*(RADIUS+1),MARGIN_TOP,parseInt(seconds%10),cxt);
    		for(var i=0;i<balls.length;i++){
    			cxt.fillStyle=balls[i].color;
    			cxt.beginPath();
    			cxt.arc(balls[i].x,balls[i].y,RADIUS,0,2*Math.PI,true);
    			cxt.closePath();
    			cxt.fill();
    		}
    	}
    	function renderDigit(x,y,num,cxt){
    		cxt.fillStyle="rgb(0,102,153)";
    		for(var i=0;i<digit[num].length;i++)
    			for(var j=0;j<digit[num][i].length;j++)
    				if(digit[num][i][j]==1){
    					cxt.beginPath()
    					cxt.arc(x+(RADIUS+1)+j*2*(RADIUS+1),y+(RADIUS+1)+i*2*(RADIUS+1),RADIUS,0,2*Math.PI);
    					cxt.closePath();
    					cxt.fill();
    				}
    	}
    	function update(){
    		var nextTime=new Date();
    		var nexttimehours=parseInt(nextTime.getHours());
    		var nexttimeminutes=parseInt(nextTime.getMinutes());
    		var nexttimeseconds=parseInt(nextTime.getSeconds());
    		var showtimehours=parseInt(showtime.getHours());
    		var showtimeminutes=parseInt(showtime.getMinutes());
    		var showtimeseconds=parseInt(showtime.getSeconds());
    		if(nextTime!=showtime){
    		if(parseInt(nexttimehours/10)!=parseInt(showtimehours/10)){
    			addballs(MARGIN_LEFT,MARGIN_TOP,parseInt(nexttimehours/10));
    		};
    		if(parseInt(nexttimehours%10)!=parseInt(showtimehours%10)){
    			addballs(MARGIN_LEFT+15*(RADIUS+1),MARGIN_TOP,parseInt(nexttimehours%10));
    		};
    		if(parseInt(nexttimeminutes/10)!=parseInt(showtimeminutes/10)){
    			addballs(MARGIN_LEFT+39*(RADIUS+1),MARGIN_TOP,parseInt(nexttimeminutes/10));
    		};
    		if(parseInt(nexttimeminutes%10)!=parseInt(showtimeminutes%10)){
    			addballs(MARGIN_LEFT+54*(RADIUS+1),MARGIN_TOP,parseInt(nexttimeminutes%10));
    		};
    		if(parseInt(nexttimeseconds/10)!=parseInt(showtimeseconds/10)){
    			addballs(MARGIN_LEFT+78*(RADIUS+1),MARGIN_TOP,parseInt(nexttimeseconds/10));
    		};
    		if(parseInt(nexttimeseconds%10)!=parseInt(showtimeseconds%10)){
    			addballs(MARGIN_LEFT+93*(RADIUS+1),MARGIN_TOP,parseInt(nexttimeseconds%10));
    		};}
    		showtime=nextTime;
    		updateBalls();
    	}
    	function updateBalls(){
    		for(var i=0;i<balls.length;i++){
    			balls[i].x +=balls[i].vx;
    			balls[i].y +=balls[i].vy;
    			balls[i].vy +=balls[i].g;
    			if(balls[i].y> WINDOW_HEIGHT - RADIUS){
    				balls[i].y=WINDOW_HEIGHT -RADIUS;
    				balls[i].vy=-balls[i].vy*0.6;
    			}
    		}
    		var ballscontol=0;
    		for(i=0;i<balls.length;i++)
    			if (balls[i].x + RADIUS>0&&balls[i].x - RADIUS<WINDOW_WIDTH) {
    				balls[ballscontol++]=balls[i]
    			}
    		while(balls.length>Math.min(ballscontol,300)){
    			balls.pop();
    		}
    	}
    	function addballs(x,y,num){
    		for(var i=0;i<digit[num].length;i++)
    			for(var j=0;j<digit[num][i].length;j++)
    				if(digit[num][i][j]==1){
    					var newball={
    						x : x+(RADIUS+1)+j*2*(RADIUS+1),
    						y : y+(RADIUS+1)+i*2*(RADIUS+1),
    						g : 1.5+Math.random(),
    						vx :Math.pow(-1,Math.floor(Math.random()*100))*5,
    						vy : -Math.ceil(Math.random()*10),
    						color :colors[Math.floor(Math.random()*colors.length)]
    					}
    					balls.push(newball);
    				}
    	}
    </script>
    </html>

运行效果图

![70][]

[70]: /images/20220531/fd2139e8063b463ab13579719f4ce19d.png