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Item Screen Space Re-Rendering for the Simulation of Concert Lighting(The Eurographics Association, 2010) Stephenson, Ian; Scanlan, Liam; John Collomosse and Ian GrimsteadThe visualisation of modern concert lighting requires complex illumination models to be calculated at interactive frame rates. Each light may have 20 or more parameters which are all changing in real time. Here we present a technique which allows static scenes with rapidly changing illumination to be re-rendered quickly in graphics hardware, with support for arbitrary geometry, complex BRDFs, shadowing and volumetric fogging. The rendering algorithm is re-factored to allow changing lighting to be applied to scenes which are otherwise fully rendered, minimising the calculation required when lights are moved.Item Computer Modelling of Theatrical Sets(The Eurographics Association, 2010) Stephenson, Ian; Pride, Rebecca; John Collomosse and Ian GrimsteadHere we discuss the design and implementation of a modelling tool specifically targeted for use by designers of theatrical sets. By applying domain specific knowledge and contraints to the design of the software, we demonstrate a system which can be used without signifigant training, by users with no previous computer graphics experience. We present initial end user experiences of using the tool in designing a real production of The First Arabian Night .