Question

Computer modeling that represents the geometric structure of a three-dimensional object or building by defining its surfaces rather than its interior volume, usually with polygons consisting of vertices, edges, and faces, creating a polygon mesh that can be edited by subdividing, trimming, intersecting, stretching, or projecting. Because curved surfaces can only be approximated by a polygon mesh, such mathematical algorithms as non-uniform rational B-splines (NURBS) are used to model true curves and complex surfaces. Modeled surfaces can also be texture-mapped to add color and texture and be assigned weight and a center of gravity for simulations.

A) Solid modeling
B) Parametric modeling
C) Surface modeling
D) Mesh modeling

Answer 1

Computer modeling described here is specifically 'Surface modeling' ( option C) which focuses on defining three-dimensional structures by their surfaces using polygon meshes and algorithms like NURBS. It is used broadly in industries such as engineering and architecture to visualize and simulate designs.

Step-by-step explanation:

Computer modeling represents the geometric structure of a three-dimensional object or building by defining its surfaces with a polygon mesh composed of vertices, edges, and faces. This type of modeling allows for editing through various methods such as subdividing, trimming, intersecting, stretching, or projecting.


When representing curves and complex surfaces, mathematical algorithms like non-uniform rational B-splines (NURBS) are utilized to model true curves more accurately. Moreover, surface can be texture-mapped to add color and texture, and properties like weight and center of gravity can be assigned for simulation purposes. The most fitting description given the provided details is C) Surface modeling.

Surface modeling is often employed in various fields such as engineering, architecture, and digital arts for creating three-dimensional representations of objects. For instance, architects use models to predict how a new building will alter a city block's appearance whereas companies might create rough models of new products to demonstrate their functionality before finishing their designs.

While surface modeling focuses on the object's exterior, it can be part of a more complex modeling process that includes other forms such as solid, parametric, and mesh modeling, each with particular applications and strengths.