Fix fixed property in nodes not work bug. Fix #5966

src/chart/graph/forceLayout.js

@@ -57,6 +57,7 @@ define(function (require) {
                     return {
                         w: rep,
                         rep: rep,
+                        fixed: nodeData.getItemModel(idx).get('fixed'),
                         p: (!point || isNaN(point[0]) || isNaN(point[1])) ? null : point
                     };
                 });

test/force3.html

@@ -35,7 +35,13 @@
                     renderer: 'canvas'
                 });
 
-                var data = [];
+                var data = [{
+                    fixed: true,
+                    x: chart.getWidth() / 2,
+                    y: chart.getHeight() / 2,
+                    symbolSize: 20,
+                    id: '-1'
+                }];
                 var edges = [];
                 chart.setOption({
                     series: [{