One, the composition is different
1, three-dimensional: three-dimensional is composed of one-dimensional and two-dimensional, two-dimensional that there are only two directions of the intersection of a two-dimensional and a one-dimensional superimposed together to get the three-dimensional.
2, four-dimensional: four-dimensional that is, four dimensions, it is composed of countless three-dimensional, and three-dimensional is composed of countless two-dimensional.
2. Different characteristics
1. Three-dimensional: ? The spatial objective is defined through the X, Y, Z coordinate axes, and the spatial relationship is divided based on the body, with obvious complexity;? Can be more real expression of the objective world; Can be three-dimensional spatial analysis and operation.
2. Four-dimensional: each axis of the four dimensions is perpendicular to each other.
Three, different uses
1, three-dimensional: three-dimensional animation, not subject to the limitations of time, space, location, conditions, objects, the use of a variety of forms of expression to the complexity and abstraction of the content of the program, the principles of science, abstract concepts and so on, with a centralized, simplified, graphic, vivid form of expression.
Three-dimensional virtual, referred to as VR technology called VR technology. Applied to tourism, real estate, museums, subways, airports, stations, terminals and other industry projects to display, publicity.
2, four-dimensional: to describe the number of space-time coordinates.
Baidu Encyclopedia - three-dimensional
Baidu Encyclopedia - four-dimensional