SceneJS.Lights in seperate transform hierarchy

Problem

In V0.7.4, a Lights node cannot be transformed independently of it's illuminated subnodes because it is within the same subgraph as those nodes.

In the example below, the translation cannot be used to move the light around because it will also move the content that it illuminates:

var a = new SceneJS.Node(
     new SceneJS.Translate({ ... },
            new SceneJS.Lighting({ ... },

               new SceneJS.Geometry({ ... })
           )
      )
);

Solution

In V0.7.5, Lights nodes now have a global effect, where once they are defined they then illuminate all other nodes subsequently rendered during the graph's left-right traversal. This allows them to be within their own transform hierarchies:

var a = new SceneJS.Node(
     new SceneJS.Translate({ ... },
            new SceneJS.Lighting({ ... })
     ),

     new SceneJS.Geometry({ ... })
);

The left-to-right traversal semantic was introduced in V0.7.5 by the SceneJS.Symbol and SceneJS.Instance nodes.