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@patricker

patricker/.block

Created Feb 21, 2018
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fresh block
license: mit
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<script src="https://d3js.org/d3.v4.min.js"></script>
<style>
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
</style>
</head>
<body>
<script>
// Feel free to change or delete any of the code you see in this editor!
var svg = d3.select("body").append("svg")
.attr("width", 960)
.attr("height", 500)
var simulation = d3.forceSimulation()
.nodes(graph.nodes);
simulation
.force("charge_force", d3.forceManyBody().strength(-100))
.force("center_force", d3.forceCenter(width / 2, height / 2))
.force("links", d3.forceLink(graph.links).id(function (d: any) { return d.id; }))
.force("collide", d3.forceCollide().radius(12))
;
simulation
.on("tick", ticked);
//add encompassing group for the zoom
var g = svg.append("g")
.attr("class", "everything");
//Create deffinition for the arrow markers showing relationship directions
g.append("defs").append("marker")
.attr("id", "arrow")
.attr("viewBox", "0 -5 10 10")
.attr("refX", 20)
.attr("refY", 0)
.attr("markerWidth", 8)
.attr("markerHeight", 8)
.attr("orient", "auto")
.append("svg:path")
.attr("d", "M0,-5L10,0L0,5");
var link = g.append("g")
.attr("class", "links")
.selectAll("line")
.data(graph.links)
.enter().append("line")
.attr("stroke", function(d: any) { return d3.color("#000000"); })
.attr("marker-end", "url(#arrow)");
var node = g.append("g")
.attr("class", "nodes")
.selectAll("circle")
.data(graph.nodes)
.enter()
.append("circle")
.attr("r", 10)
.attr("fill", function(d) {
if (d.lotid == term) return d3.color("#00FF00");
if (d.sourceOnly) return d3.color("#0000FF");
return d3.color("#FFFF2F"); })
.style("stroke", function(d) {
if (d.lotid == term) return d3.color("#008000");
if (d.sourceOnly) return d3.color("#000080");
return d3.color("#FF8D2F");
});
//add drag capabilities
var drag_handler = d3.drag()
.on("start", drag_start)
.on("drag", drag_drag)
.on("end", drag_end);
drag_handler(node);
var text = g.append("g").attr("class", "labels").selectAll("g")
.data(graph.nodes)
.enter().append("g")
.append("text")
.attr("x", 14)
.attr("y", ".31em")
.style("font-family", "sans-serif")
.style("font-size", "0.7em")
.text(function (d: any) { return d.lotid; });
node.on("click", function (d: any) {
d3.event.stopImmediatePropagation();
self.onNodeClicked.emit(d.id);
});
node.append("title")
.text(function (d: any) { return d.lotid; });
//add zoom capabilities
var zoom_handler = d3.zoom()
.on("zoom", zoom_actions);
zoom_handler(svg);
//Drag functions
//d is the node
function drag_start(d) {
if (!d3.event.active) simulation.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
}
//make sure you can't drag the circle outside the box
function drag_drag(d) {
d.fx = d3.event.x;
d.fy = d3.event.y;
}
function drag_end(d) {
if (!d3.event.active) simulation.alphaTarget(0);
d.fx = null;
d.fy = null;
}
//Zoom functions
function zoom_actions(){
g.attr("transform", d3.event.transform)
}
function ticked() {
//update circle positions each tick of the simulation
node
.attr("cx", function(d) { return d.x; })
.attr("cy", function(d) { return d.y; });
//update link positions
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; });
text
.attr("transform", function (d: any) { return "translate(" + d.x + "," + d.y + ")"; });
}
</script>
</body>
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