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A hidden-surface determination algorithm is a solution to the visibility problem, which was one of the first major problems in the field of 3D computer graphics. [ citation needed ] The process of hidden-surface determination is sometimes called hiding , and such an algorithm is sometimes called a hider .
However, this is not always possible. A virtual hand that can select and re-locate virtual objects will work as well. 3D widgets can be used to put controls on objects: these are usually called 3D Gizmos or Manipulators (a good example are the ones from Blender). Users can employ these to re-locate, re-scale or re-orient an object (Translate ...
In principle, any 2D vector graphics renderer can be used to render 3D objects by first projecting them onto a 2D image plane. [27]: 93, 431, 505, 553 3D rasterization Adapts 2D rasterization algorithms so they can be used more efficiently for 3D rendering, handling hidden surface removal via scanline or z-buffer techniques. Different realistic ...
2D Computer Aided Design, 3D Modeling, Basic Rendering, Rudimentary Animation (of Camera, not objects) Proprietary: Blender: 2024-08-20 v 4.2.1 [1] [2] Blender Foundation: Microsoft Windows, macOS, Linux, BSD, Solaris, AmigaOS 4, MorphOS
Hidden-surface algorithms can be used for hidden-line removal, but not the other way around. Reif and Sen [ 17 ] proposed an O (log 4 n )-time algorithm for the hidden-surface problem, using O (( n + v )/log n ) CREW PRAM processors for a restricted model of polyhedral terrains, where v is the output size.
The process makes rendering objects quicker and more efficient by reducing the number of polygons for the program to draw. For example, in a city street scene, there is generally no need to draw the polygons on the sides of the buildings facing away from the camera; they are completely occluded by the sides facing the camera.
The objects in 3-D computer graphics are often referred to as 3-D models. Unlike the rendered image, a model's data is contained within a graphical data file. A 3-D model is a mathematical representation of any three-dimensional object; a model is not technically a graphic until it is displayed.
Universal Scene Description (USD) is a framework for interchange of 3D computer graphics data. The framework focuses on collaboration, non-destructive editing, and enabling multiple views and opinions about graphics data. [1] USD is used in many industries including visual effects, architecture, design, robotics, CAD, and rendering. [2] [3]