13.07.2015 Views

6 modules - PI-VR GmbH

6 modules - PI-VR GmbH

6 modules - PI-VR GmbH

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6.4 Rendering6.4.4 SurfaceAnalysisRendering » SurfaceAnalysisThe SurfaceAnalysis module allows to analyze the quality of a surface. The user canexamine the continuity of different types of virtual lines like isophotes that are displayedon the objects in the scene. By this means, discontinuities on surfaces can be detected.The module can be used for analyzing polygonal as well as NURBS data.» Analysis Mode» Activate Surface Analysis: Enables / disables the Surface Analysis rendering mode.You can also activate this rendering mode by selecting it in the Visualization Menu.» Analysis Mode: Selects the analysis mode.• Isophotes: Isophotes are lines which mark spots of same brightness on thesurface. The surface is assumed to be perfectly diffuse reflecting. It is lit fromboth sides by a directional light emitting parallel light beams. The user can setthe direction of the light source. The isophote lines are view-independent197

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