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index.html
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<html>
<body>
<svg id='viz'></svg>
</body>
<script src='https://d3js.org/d3.v5.min.js'></script>
<script>
var width = 2*800;
var height = 2*600;
var color = d3.scaleOrdinal(d3.schemeCategory10);
d3.json("dataset/json/depth2_pytorch.json").then(function(graph) {
var label = {
'nodes': [],
'links': []
};
graph.nodes.forEach(function(d, i) {
label.nodes.push({node: d});
label.nodes.push({node: d});
label.links.push({
source: i * 2,
target: i * 2 + 1
});
});
var labelLayout = d3.forceSimulation(label.nodes)
.force("charge", d3.forceManyBody().strength(-50))
.force("link", d3.forceLink(label.links).distance(0).strength(2));
var graphLayout = d3.forceSimulation(graph.nodes)
.force("charge", d3.forceManyBody().strength(-3000))
.force("center", d3.forceCenter(width / 2, height / 2))
.force("x", d3.forceX(width / 2).strength(1))
.force("y", d3.forceY(height / 2).strength(1))
.force("link", d3.forceLink(graph.links).id(function(d) {return d.id; }).distance(50).strength(1))
.on("tick", ticked);
var adjlist = [];
graph.links.forEach(function(d) {
adjlist[d.source.index + "-" + d.target.index] = true;
adjlist[d.target.index + "-" + d.source.index] = true;
});
function neigh(a, b) {
return a == b || adjlist[a + "-" + b];
}
var svg = d3.select("#viz").attr("width", width).attr("height", height);
var container = svg.append("g");
svg.call(
d3.zoom()
.scaleExtent([.1, 4])
.on("zoom", function() { container.attr("transform", d3.event.transform); })
);
var link = container.append("g").attr("class", "links")
.selectAll("line")
.data(graph.links)
.enter()
.append("line")
.attr("stroke", "#aaa")
.attr("stroke-width", "1px");
var node = container.append("g").attr("class", "nodes")
.selectAll("g")
.data(graph.nodes)
.enter()
.append("image")
.attr("xlink:href", "https://github.com/favicon.ico")
.attr("x", -8)
.attr("y", -8)
.attr("width", 16)
.attr("height", 16);
node.on("mouseover", focus).on("mouseout", unfocus);
node.call(
d3.drag()
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended)
);
var labelNode = container.append("g").attr("class", "labelNodes")
.selectAll("text")
.data(label.nodes)
.enter()
.append("text")
.text(function(d, i) { return i % 2 == 0 ? "" : d.node.id; })
.style("fill", "#555")
.style("font-family", "Arial")
.style("font-size", 12)
.style("pointer-events", "none"); // to prevent mouseover/drag capture
node.on("mouseover", focus).on("mouseout", unfocus);
function ticked() {
node.call(updateNode);
link.call(updateLink);
labelLayout.alphaTarget(0.3).restart();
labelNode.each(function(d, i) {
if(i % 2 == 0) {
d.x = d.node.x;
d.y = d.node.y;
} else {
var b = this.getBBox();
var diffX = d.x - d.node.x;
var diffY = d.y - d.node.y;
var dist = Math.sqrt(diffX * diffX + diffY * diffY);
var shiftX = b.width * (diffX - dist) / (dist * 2);
shiftX = Math.max(-b.width, Math.min(0, shiftX));
var shiftY = 16;
this.setAttribute("transform", "translate(" + shiftX + "," + shiftY + ")");
}
});
labelNode.call(updateNode);
}
function fixna(x) {
if (isFinite(x)) return x;
return 0;
}
function focus(d) {
var index = d3.select(d3.event.target).datum().index;
node.style("opacity", function(o) {
return neigh(index, o.index) ? 1 : 0.1;
});
labelNode.attr("display", function(o) {
return neigh(index, o.node.index) ? "block": "none";
});
link.style("opacity", function(o) {
return o.source.index == index || o.target.index == index ? 1 : 0.1;
});
}
function unfocus() {
labelNode.attr("display", "block");
node.style("opacity", 1);
link.style("opacity", 1);
}
function updateLink(link) {
link.attr("x1", function(d) { return fixna(d.source.x); })
.attr("y1", function(d) { return fixna(d.source.y); })
.attr("x2", function(d) { return fixna(d.target.x); })
.attr("y2", function(d) { return fixna(d.target.y); });
}
function updateNode(node) {
node.attr("transform", function(d) {
return "translate(" + fixna(d.x) + "," + fixna(d.y) + ")";
});
}
function dragstarted(d) {
d3.event.sourceEvent.stopPropagation();
if (!d3.event.active) graphLayout.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) graphLayout.alphaTarget(0);
d.fx = null;
d.fy = null;
}
}); // d3.json
</script>
</html>