3D basics
Working with 3D means working with objects modeled in the three-dimensional scene, where the dimensions are horizontal (x), vertical (y), and depth (z). The resulting 3D scene is projected either onto a 2D image to show it on the screen, two 2D images for stereoscreen, or even printed as a 3D object using a 3D printer.
Representation of 3D objects
Each 3D object is represented using a number of elementary primitives such as points, line segments, triangles, or other polygons. Methods of the object's representation are as follows:
An object is a number of surfaces assembled from polygonal primitives such as triangles and quadrangles (often called quads). This method is used in 3D-modeling software for representing "surface" objects, such as a human body, a car, a building, and also clothes and a rippled water surface.
An object is a number of curves assembled from line segments. Such a representation is used for modeling hair and fur.
An object is a huge number of small points called...
