This paper discusses current status and recent advancements of 3D graphics on mobile platforms and describes open issues concerning its usage in different applications. We have treated two particular application fields. Firstly, we deal with problems of visualization of complex data structures on mobile devices. The implementation of a 3D visualization renderer on the Symbian platform for mobile devices is written as a C++ application and based on the DieselEngine R 1 as a rendering engine. 3D visualization of data is generated in the form of a Virtual Reality Modelling Language (VRML) file meaning that actually any kind of 3D content written in VRML file format can be rendered on such a device. It was the result of a project the objective of which was to provide a user interface on a mobile platform displaying visualization of hierarchical Grid monitoring data. Secondly, we describe the system that brings face animation to embedded platforms. Face animation is considered to be one of the toughest tasks in computer animation today and its delivery to mobile platforms brings possibilities for development of new innovative and attractive services for the mobile market.

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This paper discusses current status and recent advancements of 3D graphics on mobile platforms and describes an application that is used for 3D visualization of data on such platforms. The implementation of a 3D visualization renderer on the Symbian platform for mobile devices is written as a C++ application and based on the DieselEngine as a rendering engine. 3D visualization of data is generated in the form of a VRML (Virtual Reality Modelling Language) file so this application can also be considered as a VRML browser. This means that actually any kind of 3D content written in VRML file format can be rendered on such a device. The implementation was tested on the Sony Ericsson P800 mobile device. It was the result of a project whose main objective was to provide a user interface on a mobile platform displaying visualization of hierarchical Grid monitoring data.

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The proliferation of mobile devices has created the need for delivery of content tailored to capabilities of the device used. This content adaptation has to be invisible to the end user. O u r goal was to find a solution t h a t would enable this adaptation for a hierarchical data structure t h a t is changing very frequently. This means the content has to be created dynamically. In this paper we propose a solution for dynamic content generation and t r a n s p a r e n t multi-client access. Clients send requests t h a t contain parameters, and headers that describe them and the content they want to receive. The solution for content generation comprises: a request handler t h a t processes the request a n d parameters so that content based on them can be generated, a data service t h a t delivers the data needed for content generation, a content transformer t h a t transforms provided data to the format that is expected by the client in the response, and a response generator t h a t generates a response t h a t contains the requested content. Transparent access is provided using the User-Agent header field sent in the client request. W e explain the architecture of solution a n d the general content generation process. Implementation of t h e proposed solution is demonstrated in a case study involving visualization of GRID monitoring data.