Homework4

Question 1

There are 5 pieces of global information in an m3d header file. What are they?

Answer 1

Materials : the number of distinct materials the mesh uses.

Question 2

A mesh consists of one or more ________.

Answer 2

subsets

Question 3

True or False

The .m3d format is not a standard mesh format.

Answer 3

True

Question 4

A __________is a group of triangles in a mesh that can all be rendered using the same material.

Answer 4

subset

Question 5

Why would you want to keep a system memory copy of your mesh?

Answer 5

System memory copies are needed for when we need to read the mesh data such as for computing bounding volumes, picking, or collision detection.

Question 6

Name two popular 3D Modeling applications, used in 3D modeling and animation.

Answer 6

3DS Max

Blender

Maya

Truespace

Sketchup

Softimage

ZBrush

Question 7

According to your book, explain the limitation of the .m3d format.

Answer 7

we impose all vertices to have the same format (position, normal, tangent, texture coordinates). An application may have models that use different vertex formats. Adding such flexibility to the format complicates things, however, and the goal of our format is to keep it simple for demonstration purposes.