A recent development, called isogeometric analysis, provides a unifiedapproach for design, analysis and optimization of functional products inindustry. Traditional volume rendering methods for inspecting the results fromthe numerical simulations cannot be applied directly to isogeometric models. Wepresent a novel approach for interactive visualization of isogeometric analysisresults, ensuring correct, i.e., pixel-accurate geometry of the volumeincluding its bounding surfaces. The entire OpenGL pipeline is used in amulti-stage algorithm leveraging techniques from surface rendering,order-independent transparency, as well as theory and numerical methods forordinary differential equations. We showcase the efficiency of our approach ondifferent models relevant to industry, ranging from quality inspection of theparametrization of the geometry, to stress analysis in linear elasticity, tovisualization of computational fluid dynamics results.
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