From 7a4f561e851fdc7246d804c3abb6748b8a4199a6 Mon Sep 17 00:00:00 2001
From: gnowgi <nagarjun@gnowledge.org>
Date: Thu, 15 Mar 2012 16:19:20 +0530
Subject: master trunk of gnowsys-studio

---
 gstudio/static/gstudio/js/force.js | 161 +++++++++++++++++++++++++++++++++++++
 1 file changed, 161 insertions(+)
 create mode 100644 gstudio/static/gstudio/js/force.js

(limited to 'gstudio/static/gstudio/js/force.js')

diff --git a/gstudio/static/gstudio/js/force.js b/gstudio/static/gstudio/js/force.js
new file mode 100644
index 0000000..dce9739
--- /dev/null
+++ b/gstudio/static/gstudio/js/force.js
@@ -0,0 +1,161 @@
+var w = 960,
+        h = 700,
+        fill = d3.scale.category20();
+
+var vis = d3.select("#chart")
+        .append("svg:svg")
+        .attr("width", w)
+        .attr("height", h);
+
+    vis.append("svg:g").attr("class", "edges");        
+    vis.append("svg:g").attr("class", "nodes");
+
+
+$(function() {
+  $.ajax({
+    url: '/gstudio/graphs/rgraph',
+    //crossDomain: true,
+    //dataType: 'jsonp',
+    success : function(json) {
+
+      var force; 
+      
+      var nodes_by_id = _.reduce(json.node_metadata, function(acc, n) {
+        acc[n._id] = n;
+        return acc;
+      }, {});
+
+
+      var follows_edges = _(json.is_followed_by).chain().map(function(e) {
+        e.source = nodes_by_id[e.from];
+        e.target = nodes_by_id[e.to];
+        e.type = 'follows_edges';
+        return e;
+      }).filter(function(e){
+        return nodes_by_id[e.from] && nodes_by_id[e.to]
+      }).value();
+      
+      var mentions_edges = _(json.is_mentioned_by).chain().map(function(e) {
+        e.source = nodes_by_id[e.from];
+        e.target = nodes_by_id[e.to];
+        e.type = 'mentions_edges';
+        return e;
+      }).filter(function(e){
+        return nodes_by_id[e.from] && nodes_by_id[e.to]
+      }).value();
+      
+
+      nodes_by_id['189087228'].x = w/2.0;
+      nodes_by_id['189087228'].y = h/2.0;
+      
+      var force = d3.layout.force()
+              .linkStrength(0.5)
+              .charge(-2000)
+              .friction(0.7)
+              .linkDistance(50)
+              .nodes([])
+              .links([])
+              .size([w, h])
+              .start();
+
+      function update(edges){
+        
+        _.each(nodes_by_id, function(n){n.added = false});
+        
+        var nodes = _.reduce(edges, function(acc, e) {
+          if(nodes_by_id[e.from] && !nodes_by_id[e.from].added){
+            nodes_by_id[e.from].added = true;
+            acc.push(nodes_by_id[e.from]);
+          }
+          if(nodes_by_id[e.to] && !nodes_by_id[e.to].added){
+            nodes_by_id[e.to].added = true;
+            acc.push(nodes_by_id[e.to]);
+          }       
+          return acc;
+        }, []);
+        
+        force.nodes(nodes);
+        force.links(edges);
+        force.start();
+
+        var link = d3.select("#chart g.edges").selectAll("line.link")
+                .data(edges, function(e){return e.from + "-" + e.to + "-" + e.type});
+                
+                link.enter().append("svg:line")
+                .attr("class", "link")
+                .style("stroke-width", function(d) {
+                  return Math.sqrt(d.value);
+                })
+                .attr("x1", function(d) {
+                  return d.source.x;
+                })
+                .attr("y1", function(d) {
+                  return d.source.y;
+                })
+                .attr("x2", function(d) {
+                  return d.target.x;
+                })
+                .attr("y2", function(d) {
+                  return d.target.y;
+                });
+                
+                link.exit().remove();
+
+        var node = d3.select("#chart g.nodes").selectAll("g.node").data(nodes);              
+                
+                var new_g = node.enter().append("svg:g")
+                  .attr("class", "node")
+                  .call(force.drag);
+                
+                new_g.append("svg:image").attr('xlink:href',
+                        function(d) {
+                          return d.profile_image_url;
+                        }).attr('height', 32).attr('width', 32);
+                        
+                new_g.append("svg:text")
+                        .attr("dy", 46)
+                        .attr("text-anchor", "middle")
+                        .text(function(d) {
+                          return d.screen_name;
+                        });        
+                
+                node.exit().remove();
+        
+
+        force.on("tick", function() {
+
+          var x_center = $("#chart").width() / 2;
+          var y_center = $("#chart").height() / 2;
+
+          link.attr("x1", function(d) { return d.source.x; })
+            .attr("y1", function(d) { return d.source.y; })
+            .attr("x2", function(d) { return d.target.x; })
+            .attr("y2", function(d) { return d.target.y; });
+
+          node.attr("transform", function(d) { return "translate(" + (d.x-16) + "," + (d.y-16) + ")"; });
+
+        });
+      }
+      
+      update(follows_edges);
+      vis.style("opacity", 1e-6)
+              .transition()
+              .duration(1000)
+              .style("opacity", 1);
+      
+      $('input#follows').change(function(){
+        update(follows_edges);
+      });
+      
+      $('input#mentions').change(function(){
+        update(mentions_edges);
+      });
+    }
+  });
+  
+  $("#relation_type").buttonset();
+  
+  $('input#mentions').change(function(){console.log(this)});
+  $('input#hashtags').change(function(){console.log(this)});
+  
+});
-- 
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