three-dimensional的意思|示意

Three-dimensional (3D) refers to any object or representation that has three dimensions, such as length, width, and height. It is used to describe an object or an image that appears to have depth as opposed to just a flat surface. 3D imagery can be created using various techniques such as holography, anaglyphs, stereoscopy, volumetric display, virtual reality, and augmented reality.

In 3D graphics, geometry is represented by three coordinates, which is often referred to as x, y, and z. The x and y coordinates refer to the length and width of the object, while the z coordinate refers to its depth. This means that a 3D object has volume, making it look more realistic than a 2D object.

3D modeling, also known as computer-aided design (CAD), is another way in which 3D objects can be created. In 3D modeling, an artist creates a 3D model of an object by specifying its shape, size, and colors. The model is then converted into a virtual representation of the object, which can be manipulated and changed.

3D technology has become increasingly popular in recent years, and its applications are vast. 3D technology is used in animation, video games, movies, television, engineering, architecture, and even medical imaging. It can also be used to create virtual tours, virtual reality experiences, and augmented reality experiences.

In conclusion, three-dimensional objects or images have three dimensions, they have length, width, and height, and 3D modeling can be used to create digital representations of them. 3D technology is used in a wide variety of fields, from animation to medical imaging, and its applications are constantly evolving.