<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>时钟</title>
</head>
<body>
<div id="box"></div>
<script src="../bower_components/konva/konva.min.js"></script>
<script>
//设置变量
var w = 800;
var h = 600;
var r = 200;
//创建舞台
var stage = new Konva.Stage({
width:w,
height:h,
container:"box"
})
//创建表盘层
var dialLayer = new Konva.Layer();
stage.add(dialLayer);
//绘制表盘
var dialCircle = new Konva.Circle({
x:w/2,
y:h/2,
radius:r,
stroke:"#000",
strokeWidth:10,
fill:"#eee"
})
dialLayer.add(dialCircle);
//绘制刻度
var bigDialScale = new DialScale({
x:w/2,
y:h/2,
outerRadius:r,
innerRadius:r-20,
stroke:"#000",
strokeWidth:10,
number:12
});
dialLayer.add(bigDialScale);
//绘制小刻度
var smallScale = new DialScale({
x:w/2,
y:h/2,
outerRadius:r,
innerRadius:r-10,
stroke:"#000",
strokeWidth:2,
number:60
});
dialLayer.add(smallScale);
//绘制
dialLayer.draw();
//创建指针层
var handLayer = new Konva.Layer();
stage.add(handLayer);
//秒针
var secondHand = new Konva.Line({
x:w/2,
y:h/2,
points:[-20,0,180,0],
stroke:"red",
strokeWidth:"2",
rotation:0
});
handLayer.add(secondHand);
//分针
var minuteHand = new Konva.Line({
x:w/2,
y:h/2,
points:[-20,0,150,0],
stroke:"#000",
strokeWidth:"5",
rotation:0
});
handLayer.add(minuteHand);
//时针
var hourHand = new Konva.Line({
x:w/2,
y:h/2,
points:[-20,0,120,0],
stroke:"#000",
strokeWidth:"8",
rotation:0
});
handLayer.add(hourHand);
var centerCirle = new Konva.Circle({
x:w/2,
y:h/2,
radius:10,
fill:"#000"
})
handLayer.add(centerCirle);
//绘制指针层
handLayer.draw();
function run(){
var date = new Date();
//秒针转动
var seconds = date.getSeconds();
secondHand.rotation(seconds/60 * 360 - 90);
//分针转动
var minutes = date.getMinutes() + seconds / 60;
minuteHand.rotation(minutes/60 * 360 - 90);
//时针转动
var hours = date.getHours() % 12 + minutes / 60;
hourHand.rotation(hours / 12 * 360 - 90);
handLayer.draw(); //重新绘制
setTimeout(run, 1000);
}
run();
/**
* 生成表盘刻度的构造函数
* @params object options 配置项
*/
function DialScale(options) {
options = options || {};
options.x = options.x || 0;
options.y = options.y || 0;
options.outerRadius = options.outerRadius || 0;
options.innerRadius = options.innerRadius || 0;
options.number = options.number || 12;
options.strokeWidth = options.strokeWidth || 10;
options.stroke = options.stroke || "#000";
//创建组
var group = new Konva.Group({
x:options.x,
y:options.y
});
//循环绘制刻度， 并且添加到组中
var angle = 0;
var angleDiff = 360 / options.number;
for (var i = 0; i < options.number; i ++) {
var line = new Konva.Line({
points:[Math.cos(angle / 180 * Math.PI) * options.outerRadius,
Math.sin(angle / 180 * Math.PI) * options.outerRadius,
Math.cos(angle / 180 * Math.PI) * options.innerRadius,
Math.sin(angle / 180 * Math.PI) * options.innerRadius
],
stroke:options.stroke,
strokeWidth:options.strokeWidth
});
group.add(line);
angle += angleDiff;
}
return group;
}
</script>
</body>
</html>
钟表（konva）
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