From 7faa4e5dd2b52aaaa1d35d19da1ad23e78c6c7ee Mon Sep 17 00:00:00 2001
From: Alex de Mulder <alexdemulder@gmail.com>
Date: Mon, 24 Mar 2014 12:07:37 +0100
Subject: [PATCH] added freezeForStabilization option - experimental and
 undocumented

---
 dist/vis.js        | 13 +++++++++++--
 src/graph/Graph.js | 13 +++++++++++--
 2 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/dist/vis.js b/dist/vis.js
index 6713752c..aa6cbfef 100644
--- a/dist/vis.js
+++ b/dist/vis.js
@@ -16151,6 +16151,7 @@ function Graph (container, data, options) {
       nodeSpacing: 100,
       direction: "UD"   // UD, DU, LR, RL
     },
+    freezeForStabilization: false,
     smoothCurves: true,
     maxVelocity:  10,
     minVelocity:  0.1,   // px/s
@@ -16479,6 +16480,7 @@ Graph.prototype.setOptions = function (options) {
     if (options.stabilize !== undefined)       {this.stabilize = options.stabilize;}
     if (options.selectable !== undefined)      {this.selectable = options.selectable;}
     if (options.smoothCurves !== undefined)    {this.constants.smoothCurves = options.smoothCurves;}
+    if (options.freezeForStabilization !== undefined)    {this.constants.freezeForStabilization = options.freezeForStabilization;}
     if (options.configurePhysics !== undefined){this.constants.configurePhysics = options.configurePhysics;}
     if (options.stabilizationIterations !== undefined)   {this.constants.stabilizationIterations = options.stabilizationIterations;}
 
@@ -17721,6 +17723,10 @@ Graph.prototype._drawEdges = function(ctx) {
  * @private
  */
 Graph.prototype._stabilize = function() {
+  if (this.constants.freezeForStabilization == true) {
+    this._freezeDefinedNodes();
+  }
+
   // find stable position
   var count = 0;
   while (this.moving && count < this.constants.stabilizationIterations) {
@@ -17728,11 +17734,14 @@ Graph.prototype._stabilize = function() {
     count++;
   }
   this.zoomExtent(false,true);
+  if (this.constants.freezeForStabilization == true) {
+    this._restoreFrozenNodes();
+  }
   this.emit("stabilized",{iterations:count});
 };
 
 
-Graph.prototype.freezeDefinedNodes = function() {
+Graph.prototype._freezeDefinedNodes = function() {
   var nodes = this.nodes;
   for (var id in nodes) {
     if (nodes.hasOwnProperty(id)) {
@@ -17746,7 +17755,7 @@ Graph.prototype.freezeDefinedNodes = function() {
   }
 };
 
-Graph.prototype.restoreFrozenNodes = function() {
+Graph.prototype._restoreFrozenNodes = function() {
   var nodes = this.nodes;
   for (var id in nodes) {
     if (nodes.hasOwnProperty(id)) {
diff --git a/src/graph/Graph.js b/src/graph/Graph.js
index a72a8d08..28ddfa39 100644
--- a/src/graph/Graph.js
+++ b/src/graph/Graph.js
@@ -146,6 +146,7 @@ function Graph (container, data, options) {
       nodeSpacing: 100,
       direction: "UD"   // UD, DU, LR, RL
     },
+    freezeForStabilization: false,
     smoothCurves: true,
     maxVelocity:  10,
     minVelocity:  0.1,   // px/s
@@ -474,6 +475,7 @@ Graph.prototype.setOptions = function (options) {
     if (options.stabilize !== undefined)       {this.stabilize = options.stabilize;}
     if (options.selectable !== undefined)      {this.selectable = options.selectable;}
     if (options.smoothCurves !== undefined)    {this.constants.smoothCurves = options.smoothCurves;}
+    if (options.freezeForStabilization !== undefined)    {this.constants.freezeForStabilization = options.freezeForStabilization;}
     if (options.configurePhysics !== undefined){this.constants.configurePhysics = options.configurePhysics;}
     if (options.stabilizationIterations !== undefined)   {this.constants.stabilizationIterations = options.stabilizationIterations;}
 
@@ -1716,6 +1718,10 @@ Graph.prototype._drawEdges = function(ctx) {
  * @private
  */
 Graph.prototype._stabilize = function() {
+  if (this.constants.freezeForStabilization == true) {
+    this._freezeDefinedNodes();
+  }
+
   // find stable position
   var count = 0;
   while (this.moving && count < this.constants.stabilizationIterations) {
@@ -1723,11 +1729,14 @@ Graph.prototype._stabilize = function() {
     count++;
   }
   this.zoomExtent(false,true);
+  if (this.constants.freezeForStabilization == true) {
+    this._restoreFrozenNodes();
+  }
   this.emit("stabilized",{iterations:count});
 };
 
 
-Graph.prototype.freezeDefinedNodes = function() {
+Graph.prototype._freezeDefinedNodes = function() {
   var nodes = this.nodes;
   for (var id in nodes) {
     if (nodes.hasOwnProperty(id)) {
@@ -1741,7 +1750,7 @@ Graph.prototype.freezeDefinedNodes = function() {
   }
 };
 
-Graph.prototype.restoreFrozenNodes = function() {
+Graph.prototype._restoreFrozenNodes = function() {
   var nodes = this.nodes;
   for (var id in nodes) {
     if (nodes.hasOwnProperty(id)) {