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环形效果_raphael.js - benpao 阅读原文»
环形效果是不是相当的诱人，首先看几个例子：
1、colorful-clock --- 漂亮
2、CSS3+js实现多彩炫酷旋转圆环时钟效果 --- very good
3、Percentage Loader --- 帅
colorful-clock效果图如下：
有没有更刺激的，接下来见证奇迹的时刻，如下图（精致）：
在此之前，在回顾下前两个例子：
1、时钟效果_raphael.js
2、幸运大抽奖
实现原理：
第一步：构造圆环
r.customAttributes.arc = function(value, total, R) {
var alpha = 360 / total * value,
a = (90 - alpha) * Math.PI / 180,
x = 150 + R * Math.cos(a),
y = 150 - R * Math.sin(a),
path;
if (total == value) {
path = [
["M", 150, 150 - R],
["A", R, R, 0, 1, 1, 149.99, 150 - R]
];
} else {
path = [
["M", 150, 150 - R],
["A", R, R, 0, +(alpha > 180), 1, x, y]
];
}
bpath = path;
return {
path: path
};
};
r.path().attr({
arc: [100, 100, rad],
'stroke-width': 20,
'stroke': "#cecece"
});
var alpha = 360 / total * value,
a = (90 - alpha) * Math.PI / 180,
x = 150 + R * Math.cos(a),
y = 150 - R * Math.sin(a),
path;
if (total == value) {
path = [
["M", 150, 150 - R],
["A", R, R, 0, 1, 1, 149.99, 150 - R]
];
} else {
path = [
["M", 150, 150 - R],
["A", R, R, 0, +(alpha > 180), 1, x, y]
];
}
bpath = path;
return {
path: path
};
};
r.path().attr({
arc: [100, 100, rad],
'stroke-width': 20,
'stroke': "#cecece"
});
第二步：环形动起来和事件绑定
function updateVal(value, total, R, hand, id) {
if (init) {
hand.animate({
arc: [value, total, R]
}, 900, ">");
} else {
if (!value || value == total) {
value = total;
hand.animate({
arc: [value, total, R]
}, 750, "bounce", function() {
hand.attr({
arc: [0, total, R]
});
});
} else {
hand.animate({
arc: [value, total, R]
}, 750, "elastic");
}
}
};
z.mouseover(function() {
this.animate({
'stroke-width': 36,
opacity: 0.75
}, 600, 'elastic');
}).mouseout(function() {
this.stop().animate({
'stroke-width': 26,
opacity: 1
}, speed * 4, 'elastic');
});
if (init) {
hand.animate({
arc: [value, total, R]
}, 900, ">");
} else {
if (!value || value == total) {
value = total;
hand.animate({
arc: [value, total, R]
}, 750, "bounce", function() {
hand.attr({
arc: [0, total, R]
});
});
} else {
hand.animate({
arc: [value, total, R]
}, 750, "elastic");
}
}
};
z.mouseover(function() {
this.animate({
'stroke-width': 36,
opacity: 0.75
}, 600, 'elastic');
}).mouseout(function() {
this.stop().animate({
'stroke-width': 26,
opacity: 1
}, speed * 4, 'elastic');
});
第三步：倒计时
function dinit() {
if (tmptime > 0) {
ds = parseInt(tmptime % 60);
dm = parseInt(tmptime / 60) % 60;
dh = parseInt(tmptime / 3600) % 24;
txt.remove();
txt = r.text(150, 150, dh + ":" + dm + ":" + ds).attr({
font: "100 36px Arial",
fill: opts.color
});
}
};
function playing() {
dstop = setInterval(function() {
tmptime--;
if (tmptime <= 1) { !! opts.endSucc && opts.endSucc();
clearInterval(dstop);
} else {
dinit();
}
}, 1000);
};
if (tmptime > 0) {
ds = parseInt(tmptime % 60);
dm = parseInt(tmptime / 60) % 60;
dh = parseInt(tmptime / 3600) % 24;
txt.remove();
txt = r.text(150, 150, dh + ":" + dm + ":" + ds).attr({
font: "100 36px Arial",
fill: opts.color
});
}
};
function playing() {
dstop = setInterval(function() {
tmptime--;
if (tmptime <= 1) { !! opts.endSucc && opts.endSucc();
clearInterval(dstop);
} else {
dinit();
}
}, 1000);
};
搞定，大功告成。感兴趣的可以动手试试，写更fashion的效果，期待你的见证。
备注：本人现寻求一份前端工作，QQ：1173290990。（父母在不远游，游必有方）
参考：
polar-clock
CSS3+JS动态圆形图例jquery代码
DEMO：