Once you have displayed some geometric objects (grids, surfaces, contours, vectors, etc.) in your graphics window, you may want to move them around and change their characteristics to increase the effectiveness of the scene displayed. You can use the Scene Description panel (Figure 28.5.1) and the Display Properties panel (Figure 28.5.2) and Transformations panel (Figure 28.5.4), which are opened from within it, to rotate, translate, and scale each object individually, as well as change the color and visibility of each object.
The Iso-Value panel (Figure 28.5.5), which is also opened from within the Scene Description panel, allows you to change the isovalue of a selected isosurface. The Pathline Attributes panel (Figure 28.5.6) lets you set some pathline attributes. The ability to make geometric objects visible and invisible is especially useful when you are creating an animation (see Section 28.6) because it allows you to add or delete objects from the scene one at a time. The ability to change the color and position of an object independently of the others in the scene is also useful for setting up animations, as is the ability to change isosurface isovalues. You will find the features in the Scene Description panel useful even when you are not generating animations because they allow you to manage your graphics window efficiently. The procedure for overlaying graphics, which uses the Scene Description panel, is described in Section 28.2.1. (Note that you cannot use the Scene Description panel to control XY plot and histogram displays.)