| p:abstract
| - The term geometric primitive in computer graphics and CAD systems is used in various senses, with common meaning of atomic geometric objects the system can handle (draw, store). Sometimes the subroutines that draw the corresponding objects are called "geometric primitives" as well. The most "primitive" primitives are point and straight line segment, which were all that early vector graphics systems had. In constructive solid geometry, primitives are simple geometric shapes such as a cube, cylinder, sphere, cone, pyramid, torus. Modern 2D computer graphics systems may operate with primitives which are lines, as well as shapes . A common set of two-dimensional primitives includes lines, points, and polygons, although some people prefer to consider triangles primitives, because every polygon can be constructed from triangles. All other graphic elements are built up from these primitives. In three dimensions, triangles or polygons positioned in three-dimensional space can be used as primitives to model more complex 3D forms. In some cases, curves may be considered primitives; in other cases, curves are complex forms created from many straight, primitive shapes. Commonly used geometric primitives include: points lines and line segments planes circles and ellipses triangles and other polygons spline curves Note that in 3D applications basic geometric shapes and forms are considered to be primitives rather than the above list. Such shapes and forms include: spheres cubes or boxes toroids cylinders pyramids Teapots These are considered to be primitives in 3D modelling because they are the building blocks for many other shapes and forms. A 3D package may also include a list of extended primitives which are more complex shapes that come with the package. For example, a teapot is listed as a primitive in 3D Studio Max. (en)
- Prymityw to w grafice komputerowej rodzaj figur geometrycznych, z których buduje się inne, bardziej skomplikowane. Z punktu widzenia geometrycznej definicji figury, każdą z nich można zbudować z punktów. W grafice komputerowej najczęściej jednak jako prymitywów używa się trójkątów, albo odcinków. Inne figury, często stosowane jako prymitywy: różnego rodzaju krzywe okręgi, koła, sfery... kwadraty Nazwa prymityw (ang. primitive) nawiązuje do pojęć pierwotnych - w klasycznym ujęciu geometrii euklidesowej pojęciami pierwotnymi są punkt, prosta i relacja "punkt leży na prostej". (pl)
- Der Begriff grafisches Primitiv oder einfach Primitiv wird in der Computergrafik verwendet. Er bezeichnet zwei- oder dreidimensionale geometrische Formen, die in einem Programm, das mit Computergrafiken umgeht, als Datenstruktur fest definiert sind. Aus diesen meistens einfachen Primitiven lassen sich kompliziertere Formen zusammensetzen. Der deutschen Sprache besser angepasste Begriffe sind Grundobjekt, grafische Grundform oder Raumbezugsgrundform . (de)
|
![[RDF Data]](http://dbpedia.org/statics/sw-cube.png)
