Integrating new gradient support I noticed that the Visual3d_Layer class has been extended to contain multiple items called Visual3d_LayerItem. Exploring this further I realized that this was a way to offer an extensible way to support multiple user-defined objects. One of these is a color scale in a 3D view defined as V3d_ColorScaleLayerItem subclass.Experimenting with this new concept I went on to redefine...
