/**
* Returns a color from white-green-red-blue according to the degree of <tt>vertex</tt>.
*
* @param vertex a vertex
*/
@Override
public Color getColor(Object vertex) {
int val = ((Vertex) vertex).getEdges().size();
double color = 0;
if (logscale) {
double min2 = Math.log(k_min + 1);
double max2 = Math.log(k_max + 1);
color = (Math.log(val + 1) - min2) / (max2 - min2);
} else {
color = (val - k_min) / (double) (k_max - k_min);
}
return ColorUtils.getGRBColor(color);
}
