Degree two curves are called quad curves. The higher this degree, the more variation the curve can incorporate (but also the more mathematically complex it is).ĭegree one Beziers are straight line segments. Degrees of Freedomīezier curves are characterized by how many degrees of freedom they have. What are Bezier curves? Without delving into the mathematical theory, let’s just talk about the features that are of practical use to developers. Images in which you want to inject a small amount of randomness to get multiple versions of the same basic shape. The same applies to games that have procedurally generated levels. Games with simple graphics (think Asteroids) or geometric themes ( Super Hexagon and Geometry Jump come to mind) can have their sprites rendered from vectors. Developers had to follow suit and most of the popular (non-game) apps underwent a complete metamorphosis in order to conform to this design paradigm. More likely than not, they were designed using vector graphics tools. Take a look at the Camera or Photo app icons, for example. App and Menu Icons, User Interface ElementsĪ few years ago, Apple eschewed skeuomorphism in the user interface of its apps and iOS itself, in favour of bold and geometrically precise designs. Let’s take a look at some scenarios where you should consider using vector graphics. This is usually taken care of by the low-level graphics library and the programmer doesn’t need to worry about this. Because smartphone and computer displays are raster in nature, ultimately, the vector image does need to be rendered to the display as a raster image at the appropriate resolution. This is why PostScript and TrueType fonts look sharp at any magnification. One of the best things about vector graphics is that they can be rendered to any resolution while remaining absolutely crisp and smooth. At the time of writing, there are at least half a dozen screen resolutions to contend with on the iOS platform. Vector graphics make the task of creating graphical resources for multiple screen resolutions trivial. While there are situations in which raster images are irreplaceable (photos, for example), in other scenarios, vector graphics make capable substitutes. Vector graphics, on the other hand, are mathematical representations of shapes. Raster images are essentially a rectangular array of pixel intensities. Graphical resources in the digital world are of two basic types, raster and vector.
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