JavaScript+屏幕自适应:时钟(色卡分享+canvas+js)

发布于:2022-08-06 ⋅ 阅读:(355) ⋅ 点赞:(0)

色卡作为一种预设工具,是自然界存在的颜色在某种材质上的体现,主要用于色彩选择、比对、沟通,是色彩实现在一定范围内统一的标准。目前市面上的色卡种类有很多,但是常用的又有那些呢 ?

常用色卡的种类:

色卡的种类有很多,不同的行业都有属于自己的标准色卡,但是色卡的种类到底有多少,没人详细统计过。常用的标准色卡品牌有美国的潘通色卡(PANTONE)、德国劳尔色卡(RAL)、瑞典的NCS色卡、日本DIC色卡,国产的有ISO灰卡及中国建筑色卡等。

1.潘通色卡

Pantone色卡,提供平面设计、服装家居、涂料、印刷等行业专色色卡,是国际上广泛应用的色卡。

2.德国RAL色卡

也被叫做RAL国际色卡,这是一种转为色彩设计开发配色用色卡,如油漆、涂料调色配色领域,就常用RAL色卡。

3.瑞典的NCS色卡

NCS色卡是来自瑞典的色彩设计工具,是欧洲常用的标准色卡之一,全部颜色按照色相及黑度、百度和彩度规律有序排列,颜色查找会比较方便。

4.日本DIC色卡

DIE色卡是日本生产的配色工具,多用于工业、平面设计、包装、纸张印刷等领域的配色管理。

5.ISO灰卡

这是用于评估色拉度测试的专用色卡,例如纺织行业的色牢度评定,一般就会使用ISO灰卡来测试。

6.中国建筑色卡

这是中国比较权威的国家级建筑色彩标准,也是唯一用于建筑颜色的专用色卡,建筑领域的色彩设计、比对、沟通都会应用这款色卡。

学习内容:

  1. 色卡分享(本次运用到的颜色)
  2. 时钟(html)
  3. 时钟(JavaScript)

色卡分享(本次运用到的颜色):


学习产出:

1.html

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>M_fffz</title>
</head>
<body style="height:100%">
<canvas id="canvas" style="height:100%;width: 100%;background:black;">
    当前浏览器不支持Canvas,请更换浏览器后再试
</canvas>

<script src="js/digit.js"></script>
<script src="js/countdown6.6.js"></script>
</body>
</html>

2.JavaScript

2.1 countdown6.6.js

var WINDOW_WIDTH = 1024;
var WINDOW_HEIGHT = 768;
var RADIUS = 8;
var MARGIN_TOP = 60;
var MARGIN_LEFT = 30;

//var endTime = new Date();
//endTime.setTime( endTime.getTime() + 3600*1000 )
var curShowTimeSeconds = 0

var balls = [];
const colors = [
    "rgb(161,212,189)",
    "rgb(117,142,97)",
    "rgb(98,190,157)",
    "rgb(71,184,151)",
    "rgb(23,128,105)",
    "rgb(168,205,52)",
    "rgb(23,111,88)",
    "rgb(190,224,208)",
    "rgb(33,166,117)",
    "rgb(78,96,108)",
    "rgb(30,127,168)"]

window.onload = function(){

    WINDOW_WIDTH = document.body.clientWidth
    WINDOW_HEIGHT = document.body.clientHeight

    MARGIN_LEFT = Math.round(WINDOW_WIDTH /10);
    RADIUS = Math.round(WINDOW_WIDTH * 4 / 5 / 108)-1

    MARGIN_TOP = Math.round(WINDOW_HEIGHT /5);

    var canvas = document.getElementById('canvas');
    var context = canvas.getContext("2d");

    canvas.width = WINDOW_WIDTH;
    canvas.height = WINDOW_HEIGHT;

    curShowTimeSeconds = getCurrentShowTimeSeconds()
    setInterval(
        function(){
            render( context );
            update();
        }
        ,
        50
    );
}

function getCurrentShowTimeSeconds() {
    var curTime = new Date();
    var ret = curTime.getHours() * 3600 + curTime.getMinutes() * 60 + curTime.getSeconds();

    return ret;
}

function update(){

    var nextShowTimeSeconds = getCurrentShowTimeSeconds();

    var nextHours = parseInt( nextShowTimeSeconds / 3600);
    var nextMinutes = parseInt( (nextShowTimeSeconds - nextHours * 3600)/60 )
    var nextSeconds = nextShowTimeSeconds % 60

    var curHours = parseInt( curShowTimeSeconds / 3600);
    var curMinutes = parseInt( (curShowTimeSeconds - curHours * 3600)/60 )
    var curSeconds = curShowTimeSeconds % 60

    if( nextSeconds != curSeconds ){
        if( parseInt(curHours/10) != parseInt(nextHours/10) ){
            addBalls( MARGIN_LEFT + 0 , MARGIN_TOP , parseInt(curHours/10) );
        }
        if( parseInt(curHours%10) != parseInt(nextHours%10) ){
            addBalls( MARGIN_LEFT + 15*(RADIUS+1) , MARGIN_TOP , parseInt(curHours/10) );
        }

        if( parseInt(curMinutes/10) != parseInt(nextMinutes/10) ){
            addBalls( MARGIN_LEFT + 39*(RADIUS+1) , MARGIN_TOP , parseInt(curMinutes/10) );
        }
        if( parseInt(curMinutes%10) != parseInt(nextMinutes%10) ){
            addBalls( MARGIN_LEFT + 54*(RADIUS+1) , MARGIN_TOP , parseInt(curMinutes%10) );
        }

        if( parseInt(curSeconds/10) != parseInt(nextSeconds/10) ){
            addBalls( MARGIN_LEFT + 78*(RADIUS+1) , MARGIN_TOP , parseInt(curSeconds/10) );
        }
        if( parseInt(curSeconds%10) != parseInt(nextSeconds%10) ){
            addBalls( MARGIN_LEFT + 93*(RADIUS+1) , MARGIN_TOP , parseInt(nextSeconds%10) );
        }

        curShowTimeSeconds = nextShowTimeSeconds;
    }

    updateBalls();

    console.log( balls.length)
}

function updateBalls(){

    for( var i = 0 ; i < balls.length ; i ++ ){

        balls[i].x += balls[i].vx;

        var c = 1.0;
        if( balls[i].y + RADIUS + balls[i].vy >= WINDOW_HEIGHT ){
            c = ( WINDOW_HEIGHT - (balls[i].y+ RADIUS) ) / balls[i].vy;
            console.log( c );
        }

        balls[i].y += balls[i].vy;
        balls[i].vy += c * balls[i].g;;

        if( balls[i].y >= WINDOW_HEIGHT-RADIUS ){
            balls[i].y = WINDOW_HEIGHT-RADIUS;
            balls[i].vy = - Math.abs(balls[i].vy)*0.75;
        }
    }

    var cnt = 0
    for( var i = 0 ; i < balls.length ; i ++ )
        if( balls[i].x + RADIUS > 0 && balls[i].x -RADIUS < WINDOW_WIDTH )
            balls[cnt++] = balls[i]

    while( balls.length > cnt ){
        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 aBall = {
                    x:x+j*2*(RADIUS+1)+(RADIUS+1),
                    y:y+i*2*(RADIUS+1)+(RADIUS+1),
                    g:1.5+Math.random(),
                    vx:Math.pow( -1 , Math.ceil( Math.random()*1000 ) ) * 4,
                    vy:-5,
                    color: colors[ Math.floor( Math.random()*colors.length ) ]
                }

                balls.push( aBall )
            }
}

function render( cxt ){

    cxt.clearRect(0,0,WINDOW_WIDTH, WINDOW_HEIGHT);

    var hours = parseInt( curShowTimeSeconds / 3600);
    var minutes = parseInt( (curShowTimeSeconds - hours * 3600)/60 )
    var seconds = curShowTimeSeconds % 60

    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 ){




    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();
                var radiaCrad=cxt.createRadialGradient(x+j*2*(RADIUS+1)+(RADIUS+1) ,y+i*2*(RADIUS+1)+(RADIUS+1) ,2, x+j*2*(RADIUS+1)+(RADIUS+1) ,y+i*2*(RADIUS+1)+(RADIUS+1) , RADIUS);
                radiaCrad.addColorStop(0.0,"#ffffff");
                radiaCrad.addColorStop(0.25,"#fff8a9");
                radiaCrad.addColorStop(0.5,"rgb(232,241,46)");
                radiaCrad.addColorStop(0.75,"rgb(255,238,66)");
                radiaCrad.addColorStop(1.0,"rgb(250,239,40)");
                cxt.fillStyle = radiaCrad;
                cxt.lineWidth=3;

                cxt.strokeStyle="#fff302";
                cxt.arc( x+j*2*(RADIUS+1)+(RADIUS+1) , y+i*2*(RADIUS+1)+(RADIUS+1) , RADIUS , 0 , 2*Math.PI )
                cxt.closePath()

                cxt.fill()
                cxt.stroke()
            }
}

2.2  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]
        ]//:
    ];

效果图:

 

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