public int getScale(GridCluster cluster, int totalNumPoints)
{
int scaleMin = 5;
int scaleMax = 40;
int scale;
int clusterPoints = cluster.getNumPoints();
scale = scaleMin + (int)((3 * scaleMax * clusterPoints) / totalNumPoints);
if (!cluster.isGroupPoints())
{
scale = scale / 4;
}
return(20); // scale;
}