Overview

The basis of JetStream Roamer is its ability to walk through any size model in real time. JetStream guarantees a user-defined >frame rate using a unique algorithm which automatically calculates which items to render first during navigation, based on the size of items and distance from the viewpoint. Items which JetStream does not have time to render are therefore sacrificed or "dropped out" in the name of interactivity. These items are, of course, rendered when navigation ceases. The amount of >drop-out depends on several factors including: hardware (in particular graphics card and driver performance - for a list of recommended graphics cards, visit www.navisworks.com), as well as the size of the JetStream navigation window and the size of the model. If you wish to reduce drop-out during navigation, you have the option to reduce frame rate and therefore trade it off against drop-out.

When working with truely large "supermodels" in JetStream, you will require a sufficient amount of RAM to load and review the data. JetStream employs JetStream technology which optimizes the usage of the available RAM. Before running out of memory, JetStream will page unnecesary data to the hard disk, freeing up space for loading to continue. JetStream technology also enables the user to commence navigating the supermodel, before it has completely loaded into memory.

JetStream is large address aware, utilizing any additional memory assignment following the 3GB switch available on Windows XP systems.

To start Roamer, double click on the Roamer icon on the desktop, or go to Start, Programs, JetStream, Roamer . The following chapters will describe the interface in more detail.

JetStream contains full context sensitive Help. Click and click over the toolbar button or menu command to display the appropriate Help topic. Or alternatively go to the Help menu.

For more hints, tips and answers to frequently asked questions, see or alternatively, go to the JetStream website at www.navisworks.com