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- W53984690 abstract "An orrery is a clockwork mechanical device illustrating the positions and motions of a solar system, first introduced by the Earl of Orrery over 300 years ago. This nifty describes a homework assignment in one of the introductory programming classes at UNC Asheville, in which the student takes inspiration from an orrery to create an animation of a solar system in motion, using the Processing programming language. Within the built-in graphics package and display window of Processing, the student uses trigonometry to calculate the elliptical orbits of planets orbiting one or more stars, as well as moons orbiting those planets. Programming skills demonstrated by a successful student include:• Mastery of graphics primitives in Processing, including ellipses, rectangles, and other shapes.• Understanding of RGB and/or HSB color models, including alpha channel transparency.• Use of sequential, conditional, and iterative control flow.• Use of event driven programming to create animation.• Use of built-in and custom Processing variables to create timed events.• Knowledge of trigonometry, including the use of both the sine and cosine functions to calculate and animate elliptical motion.• Mathematical range rescaling, to customize the radii and positions of planetary orbits.• Use of relative variables, to allow planetary bodies such as moons to orbit other moving bodies." @default.
- W53984690 created "2016-06-24" @default.
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- W53984690 date "2013-12-01" @default.
- W53984690 modified "2023-09-28" @default.
- W53984690 title "Orrery: an animation of a model solar system using elliptical motion and trigonometry in processing" @default.
- W53984690 hasPublicationYear "2013" @default.
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