Moving around the scene is an activity performed by end-users to examine their models and to prepare for generating a presentation. Whether it is "local" to the running Showcase application or interacting with it from a remote UI, your add-in can mimic and customize this behavior.
The first of the sample add-ins in this section, DisplayWalkZoneCustom.py, makes it easier to navigate a complex scene by making visible the "walk zone" visible. The walk zone, also commonly known in industry literature as a navigation mesh, determines how the Showcase camera can move through a scene, and thus delimits the possibilities of presentations or movies generated from a scene. For example, the walk zone determines which objects are taken into account in a scene, and which are ignored. By making the walk zone visible, you can fine-tune the presentation.
The second sample add-in, NudgeCameraCustom.py, demonstrates how to manipulate the scene camera from an add-in. It adds items to a Showcase menu for "nudging" the camera left and right, but could just as easily be adapted to manipulate the camera in other ways — from a remote UI, for example.
The third sample add-in, TerrainCollision.py demonstrates advanced scene navigation using the walk zone navigation mesh.
