![]() ![]() Detail description of the system is made in the later chapter. A mobile user with GPS can move around virtual spaces via the universal mobile interface. The user’s current location (coordinates) is converted to other coordinates that correspond to other virtual spaces. The universal mobile interface has its own coordinate system. Shared location: The universal mobile interface provides a simultaneous walkthrough experience of multiple digital cities. Thus the universal mobile interface supports three input devices, namely, arrow keys, a joystick, and voice commands to move around the virtual spaces connected to the universal mobile interface. The manipulation or movements within the city spaces should be intuitive and simple. Single and simple interface: The universal mobile interface provides a single interface to multiple digital city systems so that a user can navigate oneself without learning specific commands to operate each system. The universal mobile interface has the following goals: 1. The universal mobile interface should enable a user to navigate through multiple digital cities by means of a single interface. The aim of creating the universal mobile interface is to connect various heterogeneous digital cities representing the same area. #Virtual city maker non games fullIn order to make full use of the existing digital cities, there is a need for a portable interface to information provided by digital cities. However, a precise 3D model of a real city cannot be displayed on a small PDA or a mobile phone. However, users also need information when not sitting in front of their computer. Digital cities are developed to provide regional information. An interface that would integrate heterogeneous digital cities representing the same city would be very helpful for users. At the same time, there is no common interface for users to walkthrough and manipulate those digital cities. However, digital cities that aim to provide a ‘walkthrough’ are developed in different ways, as no common design approach exists. Moreover, the recent rapid growth of the digital camera market would increase the motivation of creating new digital cities. ![]() As computers are becoming more powerful and cheaper, more digital representations of real cities will be developed. Among them are efforts to make a virtual city where users can walkthrough, such as a 3D model of a real city, 2D map of a city, digital photo albums of a city, and so on. cities have been developed all over the world. ![]()
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