/ˌθriː-diː/
n. “The perception or representation of objects with depth, height, and width.”
3D, short for three-dimensional, refers to any object, environment, or representation that has length, width, and depth, allowing for realistic perception of volume and space. In computing and media, 3D is widely used in graphics, modeling, printing, and animation to create lifelike visuals and immersive experiences.
Key characteristics of 3D include:
- Three Axes: Objects are defined along the X (width), Y (height), and Z (depth) axes.
- Perspective: Depth cues such as shading, occlusion, and vanishing points create realistic perception.
- Applications: Used in 3D modeling software, video games, movies, virtual reality, CAD, and 3D printing.
- Rendering: 3D graphics require algorithms to convert 3D objects into 2D images on a screen, often with lighting and texture applied.
- Interactivity: 3D environments can be navigated or manipulated in real time, especially in games and VR simulations.
Conceptual example of 3D in computing:
// Defining a simple 3D point in code
struct Point3D { float x; float y; float z; };
Point3D cubeVertex = {1.0, 2.0, 3.0};Conceptually, 3D is like moving from a flat painting to a sculpture — you can view and interact with the object from multiple angles, and it occupies real space. In essence, 3D represents the transition from flat, two-dimensional representations to volumetric, spatially realistic environments, enabling richer visualization, simulation, and interactive experiences across art, engineering, and entertainment.