Kinetic art expressions based on optical and luminous phenomenon as well as painting illusionism. The expression "kinetic art" in this modern form first appeared at the Museum für Gestaltung of Zürich in 1960, and found its major developments in the 1960s. In most European countries, it generally included the form of optical art that mainly makes use of optical illusions, such as op art, represented by Bridget Riley, as well as art based on movement represented by Yacov Agam, Carlos Cruz-Diez, Jesús Rafael Soto, Gregorio Vardanega, or Nicolas Schöffer. From 1961 to 1968, GRAV ("Groupe de Recherche d’Art Visuel") founded by François
Art of Illusion can be used to control shape changes. With skeletons it is possible to save predefined gestures that can be combined as poses, to generate complex repeatable movements. Animation data of each object is stored into animation tracks as key frames. Art or Illusion uses multi threading for rendering images and it provides several options for lighting. The core software package comes with two built in renderers: Art of Illusion supports two scripting languages, BeanShell and Groovy and it comes with a basic level text editor for writing, editing and running scripts. There are three different types of scripts each for