fix: Directed edges always use source node color. fixes issue: gephi#2259

csabahruska · csabahruska · commit 195eb0f4add9 · 2021-04-16T12:48:04.000+02:00
diff --git a/modules/VisualizationImpl/src/main/java/org/gephi/visualization/model/edge/Edge2dModel.java b/modules/VisualizationImpl/src/main/java/org/gephi/visualization/model/edge/Edge2dModel.java
@@ -190,10 +190,18 @@ public void display(GL2 gl, GLU glu, VizModel vizModel) {
                 b = edge.b();
 
                 if (edge.alpha() == 0f) {
-                    Node node = sourceModel.isSelected() ? edge.getTarget() : edge.getSource();
-                    r = node.r();
-                    g = node.g();
-                    b = node.b();
+                    if (edge.isDirected()) {
+                      Node source = edge.getSource();
+                      r = source.r();
+                      g = source.g();
+                      b = source.b();
+                    } else {
+                      // HINT: for undirected graphs use the non-selected node color, see: issue #292
+                      Node node = sourceModel.isSelected() ? edge.getTarget() : edge.getSource();
+                      r = node.r();
+                      g = node.g();
+                      b = node.b();
+                    }
                 }
 
                 r = Math.min(1, 0.5f * r + 0.5f);
