Week 08 create a catfish by subdivision

This week I just focus on subdivision surfaces. I like it, because I think that subdivision surfaces are a combination of some of the best features of both NURBS and polygon surfaces. Why I said that? First, subdivision surface allow arbitrary topology which makes objects are easy to model with. Second, like NURBS surfaces, subdivision render smoothly.

I create a catfish by subdivision surfaces, and the steps are as following:

First: I create a subdiv primitives →sphere, extrude and in polyExtrudeFaces node, change the Divisions to 4 or 1.

Second: extrude the tail, then the top and buttom faces of the tail to create the long pieces of fin. The picture is as following

 

Third: Extrude other fins, and the picture is as following.

Forth part: I create the head of this cat fish, I extrude whiskers, eyes and mouth by insert edge and split the edge tool.

              

Finally, I give my model 3 smooth.  It looks like the picture as following.

Then I just render it out ,it looks like this:

It still look rough, the problem is that the surfaces which I extrude is looks not very smooth after rendering. I will keep going and find out the solution.