3D Modelling Concepts Quiz

What is the primary purpose of computer modelling?

Which of the following correctly identifies the three dimensions that define a 3D object?

In a Cartesian Coordinate System, how is the precise location of an object represented?

Which coordinate system is typically used to describe the position of celestial objects?

What is represented by the ordered triple (r, θ, φ) in the Spherical Coordinate System?

What is the 'world origin' in a 3D workspace?

What common convention is shared between architects and masons in 3D modelling?

Which of the following coordinate systems is useful for placing light sources in 3D modelling?

3D Modelling Concepts

Computer modelling is the process of creating virtual 3D objects, environments, and scenes using a computer system. It involves sculpting, spatial description, and placement.
3D modelling utilizes conventions similar to other 3D modelling fields, such as architecture. Conventions are used to accurately measure spaces, build objects, and arrange them in structures.
The 3D workspace or scene has a reference point called the world origin. Typically, the world origin is located in the center of the workspace.
A 3D object is defined by its width, height, and depth. Each dimension is associated with an axis in the world workspace.
The Cartesian Coordinate System uses three axes (x, y, z) to define the precise location of an object in a 3D world. The values on each axis can be positive or negative.
Other coordinate systems besides Cartesian exist, including Azimuthal, Spherical (3D), and Polar (2D).
The Azimuthal Coordinate System is commonly used to describe the position of objects in the sky, like planets and the Sun. It is expressed in terms of altitude (elevation) angle and azimuth.
The Spherical Coordinate System is often used for placing and moving cameras and light sources. A point in this system is represented by (r,θ,ϕ), where r≥0 and 0≤θ.

Test your knowledge on the fundamental concepts of 3D modelling. This quiz covers the processes and conventions involved in creating virtual 3D objects and environments, including coordinate systems and workspace definitions. Discover how dimensions and measurements play a critical role in the world of 3D design.