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Stop the rendered graph from dancing.

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Tom Wilkie
2015-08-19 17:26:33 +00:00
committed by David Kaltschmidt
parent 74e8f61da5
commit 91627f8cc3
2 changed files with 4359 additions and 7 deletions
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4332
app/static.go
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34
client/app/scripts/charts/nodes-layout.js
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@@ -1,13 +1,14 @@
const dagre = require('dagre');
const debug = require('debug')('scope:nodes-layout');
const Naming = require('../constants/naming');
const _ = require('lodash');
const MAX_NODES = 100;
const g = new dagre.graphlib.Graph({});
const doLayout = function(nodes, edges, width, height, scale, margins) {
let offsetX = 0 + margins.left;
let offsetY = 0 + margins.top;
const g = new dagre.graphlib.Graph({});
if (_.size(nodes) > MAX_NODES) {
debug('Too many nodes for graph layout engine. Limit: ' + MAX_NODES);
@@ -15,21 +16,40 @@ const doLayout = function(nodes, edges, width, height, scale, margins) {
}
// configure node margins
g.setGraph({
nodesep: scale(2.5),
ranksep: scale(2.5)
});
// add nodes and edges to layout engine
// add nodes to the graph if not already there
_.each(nodes, function(node) {
g.setNode(node.id, {id: node.id, width: scale(0.75), height: scale(0.75)});
if (!g.hasNode(node.id)) {
g.setNode(node.id, {id: node.id, width: scale(0.75), height: scale(0.75)});
}
});
// remove nodes that are no longer there
_.each(g.nodes(), function(nodeid) {
if (!_.has(nodes, nodeid)) {
g.removeNode(nodeid);
}
});
// add edges to the graph if not already there
_.each(edges, function(edge) {
const virtualNodes = edge.source.id === edge.target.id ? 1 : 0;
g.setEdge(edge.source.id, edge.target.id, {id: edge.id, minlen: virtualNodes});
if (!g.hasEdge(edge.source.id, edge.target.id)) {
const virtualNodes = edge.source.id === edge.target.id ? 1 : 0;
g.setEdge(edge.source.id, edge.target.id, {id: edge.id, minlen: virtualNodes});
}
});
// remoed egdes that are no longer there
_.each(g.edges(), function(edgeObj) {
const edge = [edgeObj.v, edgeObj.w];
const edgeId = edge.join(Naming.EDGE_ID_SEPARATOR);
if (!_.has(edges, edgeId)) {
g.removeEdge(edgeObj.v, edgeObj.w);
}
});
dagre.layout(g);