Abstract
Augmented Reality is the combination of virtual objects (created by computer i.e. video, texts or 3D computer models) overlay on top of real world image. Applications of Augmented Reality can be ranged from advertising, edutainment, education, engineering, medicine to industrial manufacturing. In basic applications, like in advertisement or games, users only see the actions or interact with part of the screen designed for initiate some actions. In order to make users have realistic experiences, the interaction amongst virtual objects in Augmented Reality must be restricted to the law of Physics. Virtual objects can have their own dimensions, volumes or weights. When interaction between virtual objects occurred, the collision for example, they should not penetrate each other. The objects will react to each other by the law of Physics. With this concept, all kinds of experiments can be tested or practiced without spending a lot of fortunes with the real setup ranging from simple science experiment, medical training or even assembly process of equipment. In this research, Unity 3D game engine is used on Vuforia platform. Unity is a fully integrated development engine for creating games and other interactive 3D content and Vuforia platform make it possible to write a single native application that runs on almost all smartphones and tablets. To test the concept, 8 pieces of virtual 3D puzzle modules were created using 8 markers. Each virtual module was assigned with physical properties such dimensions, shapes and positions. When assemble the puzzle, each piece of the marker must be able to move around so that the virtual modules can fit to each other. By lifting and rotating the markers, the virtual module will snap with the other proper virtual part, forming virtual 3D puzzle. The virtual module will not penetrate each other because they have their own territory due to their dimensions. With this experiment, users will have a realistic feeling on assembling the virtual model. The concept can be implemented for experiments that are dangerous or expensive to setup. Experiments related to interaction between objects such as physics and chemistry experiments, engineering and medical training are the main targets for using this kind of technology.
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