3D Modeling 3D Modeling 3

Question 1

What is 'retopology' in the context of 3D modeling?

Accepted Answer

Recreating a clean, optimized mesh over a high-resolution sculpt

Answer

Retopology is the process of rebuilding a mesh with clean, animation-friendly topology on top of a high-polygon sculpt.

Question 2

Which of the following best describes 'normal mapping'?

Accepted Answer

A texture that stores surface direction data to simulate fine detail on low-poly meshes

Answer

Normal maps store RGB data encoding surface normals, tricking the renderer into displaying high-frequency detail without extra geometry.

Question 3

What is the main advantage of NURBS modeling over polygon modeling for industrial design?

Accepted Answer

NURBS surfaces are mathematically smooth and precise at any scale

Answer

NURBS curves and surfaces are defined by mathematical equations, guaranteeing perfect smoothness and precision needed for engineering.

Question 4

What does 'baking' mean in the context of 3D texturing?

Accepted Answer

Transferring complex shading or geometry details from a high-res model to a texture map

Answer

Baking captures lighting, normals, ambient occlusion, or other details from a complex source and stores them as texture maps for a low-poly asset.

Question 5

In 3D modeling, an 'edge loop' is best described as:

Accepted Answer

A continuous ring of edges that travels around a surface

Answer

An edge loop is a series of edges that form an unbroken ring following the contour of a mesh, essential for controlling form and deformation.

3D Modeling Practice Test