After rhino,we learnt sketch up and i understood that actually sketch up is more simple than rhino.In this week,my homework is modelling cluster.For this homework,firstly I draw in Autocad to cluster and then I import this cluster to Sketch-up and then you draw again topography in sketch-up.Therefore,i think it is difficult for this.Rhino is easier than sketch-up for this topic.And then you make component to cluster because you can not if you it is not component.Additionally,in this way you can draw easily your model.
The Plan Collection 