Though on a site only vector images now gather, I consider it necessary to tell about two types of the two-dimensional (2D) computer graphics in general: vector (vector) and raster (bitmap). Without having investigated the basic distinctions between them it is almost impossible to begin work with a computer graphics. The raster image is the grid of separate points (pixels) where each pixel can be other colour or a shade is used. In the vector graphics the image is described by points and vectors (pathes) which are connected among themselves by mathematical formulas.
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