• Document: Relux Vision 1.1 Manual
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Manual Relux Vision 1.1 Manual © Relux Informatik AG, Dornacherstrasse 377, CH-4018 Basel, Switzerland. Tel +41 61 333 07 70, Fax +41 61 333 07 72, info@relux.ch, www.relux.ch Concise User Manual Relux Vision 1.1 Contents Preliminary remark ................................................................ 2 I. Calculation methods .............................................................. 3 Ray-tracing method Radiosity method Lighting engineering calculations Utilisation method Zonal-cavity method Point-to-point calculation Light simulation II. Calculations in Relux ............................................................ 10 Relux Professional Relux Vision III. Entering materials and their colours ..…………...................….... 11 Generate/select new "Material" IV. Calculations ..........................................................…............ 19 'Calculation' dialog page 'Views' dialog page 'Grid measuring areas' dialog page Miscellaneous: 'Additional geometries' V. Output of results ................................................................. 26 1 Concise User Manual Relux Vision 1.1 Preliminary remark Radiance parameters: A revised version of the manual is currently at work. We will publish the final version of this manual at www.relux.ch. This Manual is designed to assist users of the Relux Vision 1.1 light simulation software in familiarising themselves with the field of light simulation. The fundamentals of light calculation and light simulation are briefly explained in order to better illustrate the differences in the way in which these methods are employed. For those making their first move into the field of light simulation, all the steps from the installation of the program through to the output of results are presented and explained in a comprehensible manner. Where mention is made in the text of the light-calculation program "Relux Professional", then this is simply referred to as "Relux", while "Relux Vision" is referred to as "Vision". In what follows, menu entries are designated with and written in italics, while menu sequences (command sequences) are written with a dash between the individual commands. Mouse commands are designated with and written in italics. Operating buttons are either depicted in graphic form or designated with and written out in full between 'inverted commas'. This document is the exclusive copyright of Relux Informatik AG. 2 Concise User Manual Relux Vision 1.1 I. Calculation methods Lighting engineering calculations are based on the laws governing the transport of radiation, and hence the transport of energy. Light simulations do not generally employ physically-correct calculation methods. In order to facilitate the user's understanding of the different programs and program functions offered in Relux Professional and Relux Vision, the calculation methods will be briefly explained and their particular features described. Ray-tracing method Ray-tracing attempts to trace the rays of light from a visible section of a picture back to their origin. A picture (view) is divided up into a large number of small elements (picture elements). From a fictitious point of observation, rays are sent from the observer's location (eye) through the picture elements to the surfaces depicted in the scene (room surfaces). The light rays are deflected (reflected) by the surfaces, and then traced further to the next surfaces they reach. This tracing process is either complete when a light source is reached, or is ended once a maximum number of reflections have been achieved. The picture shows the example of two light rays with their reflections. One of the rays reaches a light source after three reflections, while the other ends on a non- luminescent surface. This means that the first area point in the blue circle is depicted as very dark in the simulation. A greater degree of refinement can be achieved with an increasing number of grid elements (picture elements) and if a greater number of reflections taken into account. 3 Concise User Manual Relux Vision 1.1 It is standard practice for this method to be extended in two ways: - By employing scatter, the surfaces can be depicted in a much more natural manner, making it possible to portray surfaces other t

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