Contents Communication Objectives Drawing Programs 2D CAD 3D CAD Rendering Animations Scenarios for the future? Cad and Communication Internet as an Information Modifier Internet as an Information Link Internet as an Information Optimizer Internet as an Information Retriever Interaction through the Internet Benefits of the Internet Information Management on the Internet		Animation A normal step forward from rendered still models goes into animation. Animation techniques can be divided depending what parts of the model are animated (viewer, objects of both), increasing model complexitty and production time. At this stage architectural concerns overlap video production issues, how the model is going to be perceived in motion, and what factors are going to incide in this motion are key decisions to make in order to get a proper animation. The usual animation tools found in high end CAD programs allow a relative control of animation variables, making possible good results in short periods of time. The main drawbacks in CAD animation lie on the clarity of purpose for the production of it; are the animations conveying real motion? Are they perceiving possible interactions with the built form? Answering this questions can avoid the misleading effect of a badly done animation. As more information is conveyed in a CAD model, the design process and result become more open to discussion for laypeople. Therefore a badly conceived animation can have the total opposite effects, not easing the understanding of the architetural model. Animations are widely used over the Internet as effective communication tools, in contrast to technical drawings or 3D drawings. This can explained by the following reasons: Latest internet browsers are enable to display animations as in several file formats (GIF,MPEG,MVI). Animation file formats are compliant with most of the multimedia tools provided with mainstream operating systems (Windows 3.11,Windows 95,MAC OS,DOS). Animation files can be downloaded by the user and viewed as requested. There is no risk of data modification or loss, this files are compiled movies that cannot be modified and can be easily distributed. In addition to the above mentioned reasons, there are tools that allow the interactive exploration of 3D rendered animations as stand alone movies, these are; Quicktime VR (Apple) and QuickVision (Bentley), both work on the principle that web compatible animations or scripts are obtained from within the CAD application, without the need for special file transfers. The resultant files are linked in a HTML documents as any other graphic image, and this can be downloaded or played directly.

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