我正在尝试将这两个d3示例结合起来:
http://bl.ocks.org/mbostock/4183330
http://bl.ocks.org/mbostock/2206590
我有一个投影正确显示的球体,并且缩放工作正常。我现在要做的就是风格吧。
我之前使用过世界巡演示例,它使用了画布,我能够给它一个阴影来创建我真正喜欢的发光效果。
在合并这两个代码片段后,我现在正在使用svg元素,我似乎无法使光晕效果起作用。
这是我的代码(.globe类的fill属性似乎正在运行):
<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
background: #000000;
}
.background {
fill: none;
pointer-events: all;
}
.feature {
fill: #ccc;
cursor: pointer;
}
.feature.active {
fill: #00FF15;
}
.globe
{
fill:#fff;
strokeStyle: #35C441;
lineWidth: 5;
shadowColor: #35C441;
shadowBlur: 40;
shadowOffsetX: 0;
shadowOffsetY: 0;
}
.mesh {
fill: none;
stroke: #fff;
stroke-linecap: round;
stroke-linejoin: round;
}
</style>
<body>
<script src="d3/d3.v3.min.js"></script>
<script src="d3/topojson.v1.min.js"></script>
<script>
var width = 960,
height = 720;
active = d3.select(null);
var globe = {type: "Sphere"};
var projection = d3.geo.orthographic()
.scale(height / 2.1)
.translate([width / 2, height / 2])
.clipAngle(90)
.precision(.5);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
//append a rectange to the svg element. give it the background css style class.
//on click do reset?
svg.append("rect")
.attr("class", "background")
.attr("width", width)
.attr("height", height)
.on("click", reset);
//append "g" to the svg element
var g = svg.append("g")
.style("stroke-width", "1.5px");
var path = d3.geo.path()
.projection(projection)
d3.json("./world-110m.json", function(error, world) {
g.append("path")
.datum(globe)
.attr("class", "globe")
.attr("d", path);
g.selectAll("path")
.data(topojson.feature(world, world.objects.countries).features)
.enter().append("path")
.attr("d", path)
.attr("class", "feature")
.on("click", clicked);
g.append("path")
.datum(topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; }))
.attr("class", "mesh")
.attr("d", path);
});
function clicked(d) {
if (active.node() === this) return reset();
active.classed("active", false);
active = d3.select(this).classed("active", true);
var bounds = path.bounds(d),
dx = bounds[1][0] - bounds[0][0],
dy = bounds[1][1] - bounds[0][1],
x = (bounds[0][0] + bounds[1][0]) / 2,
y = (bounds[0][1] + bounds[1][1]) / 2,
scale = .9 / Math.max(dx / width, dy / height),
translate = [width / 2 - scale * x, height / 2 - scale * y];
g.transition()
.duration(750)
.style("stroke-width", 1.5 / scale + "px")
.attr("transform", "translate(" + translate + ")scale(" + scale + ")");
}
function reset() {
active.classed("active", false);
active = d3.select(null);
g.transition()
.duration(750)
.style("stroke-width", "1.5px")
.attr("transform", "");
}
</script>
</body>
</html>
如果有人可以提供帮助那就太棒了,或者如果答案已经存在,请指点我正确的方向
谢谢!