diff --git a/sites/all/modules/figli/edlp_corpus/assets/dist/scripts/corpus.min.js b/sites/all/modules/figli/edlp_corpus/assets/dist/scripts/corpus.min.js
index 2cdddd92c..2641c7809 100644
--- a/sites/all/modules/figli/edlp_corpus/assets/dist/scripts/corpus.min.js
+++ b/sites/all/modules/figli/edlp_corpus/assets/dist/scripts/corpus.min.js
@@ -321,6 +321,11 @@
         Node.prototype.onUpdate = function(){
 
           // this.p.velocity.multiplyScalar(0.99);
+          if(this.hover || this.opened){
+            this.p.fixed = true;
+          }else{
+            this.p.fixed = false;
+          }
 
           if(this.center)
             this.slowDownNearCenter();
@@ -530,14 +535,11 @@
         for (var q = n+1; q < _nodes.length; q++) {
           if(q===n) continue;
 
-
           // avoid impact between center and aside particules
           if((_nodes[n].center && _nodes[q].aside) || (_nodes[n].aside && _nodes[q].center))
             continue;
 
-          // TODO: what if centered nodes are repulsing each other ??
-
-          margin = _nodes[n].center ? 1 : 1;
+          margin = _nodes[n].center ? 0 : 0; // in px
 
           // avoid impact between two centered particulses that comes to the center
           if(_nodes[n].center && _nodes[q].center){
@@ -548,7 +550,7 @@
 
           d = _nodes[n].p.distanceTo(_nodes[q].p);
 
-          full_rad = _nodes[n].r*margin + _nodes[q].r*margin;
+          full_rad = _nodes[n].r + _nodes[q].r + margin;
 
           // if not colliding skip following
           if(d > full_rad) continue;
diff --git a/sites/all/modules/figli/edlp_corpus/assets/scripts/corpus.js b/sites/all/modules/figli/edlp_corpus/assets/scripts/corpus.js
index 2cdddd92c..2641c7809 100644
--- a/sites/all/modules/figli/edlp_corpus/assets/scripts/corpus.js
+++ b/sites/all/modules/figli/edlp_corpus/assets/scripts/corpus.js
@@ -321,6 +321,11 @@
         Node.prototype.onUpdate = function(){
 
           // this.p.velocity.multiplyScalar(0.99);
+          if(this.hover || this.opened){
+            this.p.fixed = true;
+          }else{
+            this.p.fixed = false;
+          }
 
           if(this.center)
             this.slowDownNearCenter();
@@ -530,14 +535,11 @@
         for (var q = n+1; q < _nodes.length; q++) {
           if(q===n) continue;
 
-
           // avoid impact between center and aside particules
           if((_nodes[n].center && _nodes[q].aside) || (_nodes[n].aside && _nodes[q].center))
             continue;
 
-          // TODO: what if centered nodes are repulsing each other ??
-
-          margin = _nodes[n].center ? 1 : 1;
+          margin = _nodes[n].center ? 0 : 0; // in px
 
           // avoid impact between two centered particulses that comes to the center
           if(_nodes[n].center && _nodes[q].center){
@@ -548,7 +550,7 @@
 
           d = _nodes[n].p.distanceTo(_nodes[q].p);
 
-          full_rad = _nodes[n].r*margin + _nodes[q].r*margin;
+          full_rad = _nodes[n].r + _nodes[q].r + margin;
 
           // if not colliding skip following
           if(d > full_rad) continue;