Overview of 3D

What is 3D?

• 3D stands for three-dimensional. Everything we see in the world around us is 3D or exists in three dimensions. These dimensions are: 1) height, 2) width and 3) depth (length).
• You can see these three dimensions easily by looking at a box that has height, width and depth. Humans can see everything around them in 3D because we have 3D perception of depth perception, which means we can see depth. This is how you can tell a mountain is far away in the distance.
• When we see the world around us, each of our eyes produces a 2D image and our brain processes both of these images into a visual experience in three dimensions. People who can only see out of one eye can also see in 3D by looking through a small hole with one eye.
• You may have been to the cinema to see films in 3D using special 3D glasses. These glasses make the 2D pictures on the screen appear 3D by showing two different images at the same time. Each of these images are shown to one eye at a time, so each eye sees a slightly different image, which is processed into one image in the brain.

What is 3D Modelling?

• 3D modelling is the process of creating three-dimensional representations of an object or a surface. 3D models are made within computer-based 3D modelling software. During the 3D modelling process, you can determine an object’s size, shape, and texture. The process works with points, lines, and polygons to create the 3D shapes within the software.
• A 3D model is essentially made up of vertices, which come together to form a mesh and act as the core of the 3D model. Each point on the model can be manipulated to change the shape. By using coordinate data, the software identifies the location of each vertical and horizontal point, all relative to a reference point.
• The most common way to begin making a 3D model is to start with a basic shape – a cube, box, sphere, or whatever you think is best suited. From your starter shape, you can start moulding and refining it into what you desire.

What is 3D Modelling used for?

Many industries utilise 3D modelling for a range of projects; there are likely loads of 3D modelled items we use without even realising its involvement. With 3D modelling, the opportunities are endless. It’s a truly versatile medium that can be used for an array of different areas. Let’s explore some common uses of 3D modelling:

Game development

• Perhaps the most commonly known use for 3D modelling is game development. 3D models are used to create characters, settings, props, and entire worlds within video games.