Generate a scale-free graph based on a stochastic model in which for each
node u that is added, all existing nodes v i are
considered and an edge ( u , v i ) is created with
probability (1+deg( u ))/sum(deg( v j ))
kind of dodgy all access method for controlling the pick status of all
nodes and edges in the graph, reverts clusters to their default colour
(to indicate they are pickable again
the collapsed cluster view will be opaque and will have radius proportional
to the mass where: mass = density * volume = 4/3 PI r^3
density is arbitrarily chosen to make the collapsed cluster a convenient
size
On the panel, there is a label representing the color of the ambient light,this method
sets the label colour to white(default colour of ambient light).
Sets the default spot light parameters' value into the textfields
Position(0,0,0),Direction(0,0,-1),SpreadAngle=Math.PI/6, Concentration=0.0
Attenuation(1,0,0)
When the mass of this cluster changes, due to an addition or removal of a
node from the cluster or by a user call to this method, the mass of the
parent cluster must also be recalculated
Creates a small "stratified graph": that is, an evolving graph with each
iteration of the graph arranged in a plane, and the set of planes for all
time steps stacked into the third dimension.