Monday 21 January 2008

Wii-k 14

This is the simple model we made using polygons:

It is just a basic house with a very simple tree outside, but it shows use of polygons.


Even from the above image, we noticed each of the polygons on the cone of the tree, and we wanted to create a more detailed surface - we did this using the subsurfacing modifier in Blender. This is the resulting render:

As you can see there is a lot more detail in the picture on the directly above, as we subsurfaced the whole scene.

Question 1: What is meant by editing a mesh?


Answer: Editing a mesh (which is a series of vertices joined together to create a polygon), is the method of changing faces/vertices/edges by either moving, adding or even removing them from the mesh.

Question 2: What is the advantage of subsurfacing in blender as opposed to adding more real vertices to a mesh?

Answer: The more vertices a mesh has, the longer the computer takes to compute these points. This means if more real vertice are added to the mesh, it takes even longer for the program to compute the scene. The advantage of subsurfacing over this method is that it subdivides the polygon into smaller components, and therefore the program can compute these simpler calculations quicker. Subsurfacing also increases the smoothness of the surfaces.

Next we created an object using a 'mirror' modifier:

Half a body made, before a mirror modifier is applied (above).
The full body is completed once a mirror modifier is applied (below):
Question 3: Give two example where 'mirror' modifier helps in character modelling?

Answer:

(i) Much like the above example half a face of a character can be created, then mirrored along the necessary axis, therefore saving the designer a lot of time from having to draw a whole face.

(ii) Less error prone - a model made using mirror, means it is an exact replica of the first half of the model, and therefore no mistakes are made, unless they were already made before mirroring.

Question 4: What are the other modifiers supported by Blender?

Answer:

Mirroring: Creates a mirror image of the object along a specified axis.
Lattice: Associates a mesh with a lattice, alonging for simple deformations.
Armature: Associates a mesh with an armuture for figure posing.

Question 5: What is the difference between extrusion modelling and box modelling?

Answer:

Extrusion modelling often starts with small portion of the model and extrudes it outward from the starting point. In box modelling you would start with abasic shape such as a cube anduse subdivision and cuts to mold the object into the required shape.

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