Plan d'étude interactif
De erg
Révision datée du 13 juillet 2017 à 13:18 par Antoine (discussion | contributions)
Révision datée du 13 juillet 2017 à 13:18 par Antoine (discussion | contributions)
<syntaxhighlight lang="javascript" line> var margin = {top: 20, right: 120, bottom: 20, left: 120}; var width = 1000; var height = 700;
var i = 0,
duration = 750, root;
var tree = d3.layout.tree()
.size([height, width]); /*.size([360, width / 2 - 120]);*/
var diagonal = d3.svg.diagonal()
.projection(function(d) { return [d.y, d.x]; });
var svg = d3.select("body").append("svg")
.attr("width", width + margin.right + margin.left) .attr("height", height + margin.top + margin.bottom) .append("g") .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
// Import lightbox var lightbox;
d3.json("erg.json", function(error, flare) {
if (error) throw error;
root = flare; root.x0 = height / 2; root.y0 = 0;
function collapse(d) { if (d.children) { d._children = d.children; d._children.forEach(collapse); d.children = null; } }
root.children.forEach(collapse); update(root);
});
d3.select(self.frameElement).style("height", "800px");
function update(source) {
// Compute the new tree layout. var nodes = tree.nodes(root).reverse(), links = tree.links(nodes);
// Normalize for fixed-depth. nodes.forEach(function(d) { d.y = d.depth * 180; });
// Update the nodes… var node = svg.selectAll("g.node") .data(nodes, function(d) { return d.id || (d.id = ++i); });
// Enter any new nodes at the parent's previous position. var nodeEnter = node.enter().append("g") .attr("class", "node") .attr("transform", function(d) { return "translate(" + source.y0 + "," + source.x0 + ")"; }) /*.attr("transform", function(d) { return "translate(" + project(d.x, d.y) + ")"; })*/ .on("click", click);
nodeEnter.append("circle") .attr("r", 1e-6) //open lightbox when a node has link and is clicked .on("click", function (d) { console.log('click! / this =', this, '/ d =', d); //open lightbox if(d.link){ d3.event.preventDefault(); lightbox = lity(d.link); } // d3 /*d3.selectAll("circle").filter(function (cd) {return cd == d.parent }).classed('active', true);*/ activate(this, d); })
nodeEnter.append("text") .attr("x", function(d) { return d.children || d._children ? -10 : 10; }) .attr("dy", ".35em") .attr("text-anchor", function(d) { return d.children || d._children ? "end" : "start"; }) .text(function(d) { return d.name; }) .style("fill-opacity", 1e-6);
// Transition nodes to their new position. node.classed("leaf", function(d) { return !d._children; }); var nodeUpdate = node.transition() .duration(duration) .attr("transform", function(d) { return "translate(" + d.y + "," + d.x + ")"; });
nodeUpdate.select("circle") .attr("r", 4.5);
nodeUpdate.select("text") .style("fill-opacity", 1);
// Transition exiting nodes to the parent's new position. var nodeExit = node.exit().transition() .duration(duration) .attr("transform", function(d) { return "translate(" + source.y + "," + source.x + ")"; }) .remove();
nodeExit.select("circle") .attr("r", 1e-6);
nodeExit.select("text") .style("fill-opacity", 1e-6);
// Update the links… var link = svg.selectAll("path.link") .data(links, function(d) { return d.target.id; });
// Enter any new links at the parent's previous position. link.enter().insert("path", "g") .attr("class", "link") .attr("d", function(d) { var o = {x: source.x0, y: source.y0}; return diagonal({source: o, target: o}); }); /*.attr("d", function(d) { return "M" + project(d.x, d.y) + "C" + project(d.x, (d.y + d.parent.y) / 2) + " " + project(d.parent.x, (d.y + d.parent.y) / 2) + " " + project(d.parent.x, d.parent.y); });*/
// Transition links to their new position. link.transition() .duration(duration) .attr("d", diagonal);
// Transition exiting nodes to the parent's new position. link.exit().transition() .duration(duration) .attr("d", function(d) { var o = {x: source.x, y: source.y}; return diagonal({source: o, target: o}); }) .remove();
// Stash the old positions for transition. nodes.forEach(function(d) { d.x0 = d.x; d.y0 = d.y; });
}
// Toggle children on click. function click(d) {
if (d.children) { d._children = d.children; d.children = null; } else { d.children = d._children; d._children = null; } update(d);
}
function project(x, y) {
var angle = (x - 90) / 180 * Math.PI, radius = y; return [radius * Math.cos(angle), radius * Math.sin(angle)];
}
function activate(elt, d, noclear) {
// Clear all active classes if(noclear == undefined) { d3.selectAll("circle.active").classed("active", false); d3.selectAll("path.link").classed("active", false); } // Add active class to elements d3.select(elt).classed("active", true); console.log('need to activate', d.parent); d3.selectAll("circle").each(function (cd) { if(cd == d.parent){ activate(this, cd, true); d3.select(this).classed('active', true); } // give "active" class to path between clicked node d3.selectAll("path.link").each(function (cd){ if(cd.target == d){ d3.select(this).classed('active', true); } }) });
}
</syntaxhighlight>