gpt4 book ai didi

javascript - 部队布局中的永动机

转载 作者:行者123 更新时间:2023-11-28 17:18:38 25 4
gpt4 key购买 nike

以 Mike Bostock 为例 - https://bl.ocks.org/mbostock/4062045是否有可能让节点处于简单|随机|轻微的永久运动中以使其可视化吸引人?如果是,我该如何开始?

最佳答案

它可以很简单:

simulation
.nodes(graph.nodes)
.on("tick", ticked)
// on the end of the simulation, restart it
.on("end", function(){
simulation.alphaTarget(0.5).restart();
});

在它完成最初的“稳定”之后,这将使其看起来像“漂浮”:

<!DOCTYPE html>
<meta charset="utf-8">
<style>

.links line {
stroke: #999;
stroke-opacity: 0.6;
}

.nodes circle {
stroke: #fff;
stroke-width: 1.5px;
}

</style>
<svg width="960" height="600"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>

var svg = d3.select("svg"),
width = +svg.attr("width"),
height = +svg.attr("height");

var color = d3.scaleOrdinal(d3.schemeCategory20);

var simulation = d3.forceSimulation()
.force("link", d3.forceLink().id(function(d) { return d.id; }))
.force("charge", d3.forceManyBody())
.force("center", d3.forceCenter(width / 2, height / 2));

d3.json("https://jsonblob.com/api/901c4b8a-1162-11e7-a0ba-a1c27e793e26", function(error, graph) {
if (error) throw error;

var link = svg.append("g")
.attr("class", "links")
.selectAll("line")
.data(graph.links)
.enter().append("line")
.attr("stroke-width", function(d) { return Math.sqrt(d.value); });

var node = svg.append("g")
.attr("class", "nodes")
.selectAll("circle")
.data(graph.nodes)
.enter().append("circle")
.attr("r", 5)
.attr("fill", function(d) { return color(d.group); })
.call(d3.drag()
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended));

node.append("title")
.text(function(d) { return d.id; });

simulation
.nodes(graph.nodes)
.on("tick", ticked)
.on("end", function(){
simulation.alphaTarget(0.5).restart();
})

simulation.force("link")
.links(graph.links);

function ticked() {
link
.attr("x1", function(d) { return d.source.x; })
.attr("y1", function(d) { return d.source.y; })
.attr("x2", function(d) { return d.target.x; })
.attr("y2", function(d) { return d.target.y; });

node
.attr("cx", function(d) { return d.x; })
.attr("cy", function(d) { return d.y; });
}
});

function dragstarted(d) {
if (!d3.event.active) simulation.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
}

function dragged(d) {
d.fx = d3.event.x;
d.fy = d3.event.y;
}

function dragended(d) {
if (!d3.event.active) simulation.alphaTarget(0);
d.fx = null;
d.fy = null;
}

</script>

关于javascript - 部队布局中的永动机,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43003448/

25 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com