From 05e761abca3ff42dbba371af0560b82707dfe7c0 Mon Sep 17 00:00:00 2001
From: Pliable Pixels <pliablepixels@gmail.com>
Date: Fri, 28 Oct 2016 13:31:36 -0700
Subject: updated vis

---
 www/lib/vis/examples/network/exampleUtil.js | 133 ++++++++++++++++++++++++++++
 1 file changed, 133 insertions(+)
 create mode 100644 www/lib/vis/examples/network/exampleUtil.js

(limited to 'www/lib/vis/examples/network/exampleUtil.js')

diff --git a/www/lib/vis/examples/network/exampleUtil.js b/www/lib/vis/examples/network/exampleUtil.js
new file mode 100644
index 00000000..1621a9a5
--- /dev/null
+++ b/www/lib/vis/examples/network/exampleUtil.js
@@ -0,0 +1,133 @@
+/**
+ * Created by Alex on 5/20/2015.
+ */
+
+function loadJSON(path, success, error) {
+  var xhr = new XMLHttpRequest();
+  xhr.onreadystatechange = function () {
+    if (xhr.readyState === 4) {
+      if (xhr.status === 200) {
+        success(JSON.parse(xhr.responseText));
+      }
+      else {
+        error(xhr);
+      }
+    }
+  };
+  xhr.open('GET', path, true);
+  xhr.send();
+}
+
+
+function getScaleFreeNetwork(nodeCount) {
+  var nodes = [];
+  var edges = [];
+  var connectionCount = [];
+
+  // randomly create some nodes and edges
+  for (var i = 0; i < nodeCount; i++) {
+    nodes.push({
+      id: i,
+      label: String(i)
+    });
+
+    connectionCount[i] = 0;
+
+    // create edges in a scale-free-network way
+    if (i == 1) {
+      var from = i;
+      var to = 0;
+      edges.push({
+        from: from,
+        to: to
+      });
+      connectionCount[from]++;
+      connectionCount[to]++;
+    }
+    else if (i > 1) {
+      var conn = edges.length * 2;
+      var rand = Math.floor(Math.random() * conn);
+      var cum = 0;
+      var j = 0;
+      while (j < connectionCount.length && cum < rand) {
+        cum += connectionCount[j];
+        j++;
+      }
+
+
+      var from = i;
+      var to = j;
+      edges.push({
+        from: from,
+        to: to
+      });
+      connectionCount[from]++;
+      connectionCount[to]++;
+    }
+  }
+
+  return {nodes:nodes, edges:edges};
+}
+
+var randomSeed = 764; // Math.round(Math.random()*1000);
+function seededRandom() {
+  var x = Math.sin(randomSeed++) * 10000;
+  return x - Math.floor(x);
+}
+
+function getScaleFreeNetworkSeeded(nodeCount, seed) {
+  if (seed) {
+    randomSeed = Number(seed);
+  }
+  var nodes = [];
+  var edges = [];
+  var connectionCount = [];
+  var edgesId = 0;
+
+
+  // randomly create some nodes and edges
+  for (var i = 0; i < nodeCount; i++) {
+    nodes.push({
+      id: i,
+      label: String(i)
+    });
+
+    connectionCount[i] = 0;
+
+    // create edges in a scale-free-network way
+    if (i == 1) {
+      var from = i;
+      var to = 0;
+      edges.push({
+        id: edgesId++,
+        from: from,
+        to: to
+      });
+      connectionCount[from]++;
+      connectionCount[to]++;
+    }
+    else if (i > 1) {
+      var conn = edges.length * 2;
+      var rand = Math.floor(seededRandom() * conn);
+      var cum = 0;
+      var j = 0;
+      while (j < connectionCount.length && cum < rand) {
+        cum += connectionCount[j];
+        j++;
+      }
+
+
+      var from = i;
+      var to = j;
+      edges.push({
+        id: edgesId++,
+        from: from,
+        to: to
+      });
+      connectionCount[from]++;
+      connectionCount[to]++;
+    }
+  }
+
+  return {nodes:nodes, edges:edges};
+}
\ No newline at end of file
-- 
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