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Lesson_1 Lesson_2 Lesson_3 Lesson_4 Lesson_5 This module covers the two ways of clipping geometry during render time that V-Ray supports. Clipping the geometry allows you to expose its inside without having to remodel it and it is useful in architectural visualizations. Section Plane – this is the native SketchUp way of using a plane to clip geometry. It can be found in the Tools menu of SketchUp. It will affect only the objects which are in the same Group with the Section Plane. Once you create a Section Plane it will appear in the Geometry section of the V-Ray Asset Editor and you can use the parameters here to adjust how it affects the rendering: Enabled – enables and disables the Section Plane Affect Lights – when this checkbox is enabled light sources will shine through the clipped-out geometry and will illuminate its inside. When the checkbox is disabled only lights that are inside the geometry that is left after the clipping will shine inside it. Camera rays only – when enabled the geometry will not appear clipped in reflections and refractions and when calculating the Global Illumination. Clip lights – when enabled V-Ray will also clip light sources in the scene Use Object material – this checkbox controls the material V-Ray uses to shade the faces it generates to fill in the holes that result from the clipping. When its enabled V-Ray uses the material that is applied on the corresponding geometry. When its disabled, you can you can use the Material parameter below to specify a custom material for V-Ray to use. V-Ray Mesh Clipper – this is a V-Ray specific modifier that can be applied to any mesh in the scene and use it to clip geometry. It works in the same way as a Section Plane and has exactly the same options with the only difference being that you are not limited to using just a plane, and can use any complex mesh instead.
