http://polygon-reducer.pc-guru.cz/ Blog o výpočetní technice, programování, webdesignu, Linuxu, videu a hudbě... cs http://polygon-reducer.pc-guru.cz/error-metric-used-for-polygon-reductionIn the previous chapter were described methods for simplifying objects. Previous methods, however, for their work need algorithms to determine the edge or triangles that are the least important and can therefore be removed. Such algorithms are called the error metrics, and it is really the measurement errors, which causes the simplification or elimination of certain parts of the building. This wayhttp://polygon-reducer.pc-guru.cz/other-methods-for-simplificationAnother method, known as Vertex decimation, was introduced in 1992 by William Schroeder. It consists in choosing the lowest point with a weight according to some metrics weight point. Then there is a removal of the selected item and all adjacent triangles. Finally, there is the creation of new triangles (the so-called retriangulation) in place resulting holes. The principle is illustrated in next http://polygon-reducer.pc-guru.cz/polygon-reduction-algorithmsThere are many algorithms for simplifying objects with different features, such as efficiency, quantity of memory, scalability, etc. The most frequently used methods are described in next chapters. This chapter describes Edge collapse algorithm. Simplification of the model is based on losing of detail, which can be neglected. It is necessary to consider whether it should be rapid and greater loss http://polygon-reducer.pc-guru.cz/reducing-level-of-detailFrequently, the objects are placed at various distances from the observer. The object is distant, thus resulting in a smaller image. This can be used, to calculate the lower level of detail and object display much faster to a lesser degree of detail. The whole situation is illustrated in figures. Showing different levels of detail Left object is displayed in maximum detail and to the right levhttp://polygon-reducer.pc-guru.cz/introduction-to-polygon-reductionComputer Graphics is the field of informatics, which uses computer technology to create artificial images (called rendering). This field can be divided into several areas: 3D rendering in real time (often used in computer games), computer animation, video editing special effects (often used in film and television), editing images and modeling. The graphics applications, such as flight simulator