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4.6 Flythrough
The Map views have a "Flythrough" facility that allows for flying through a 3D View. This is accessed through the View->Flythrough menu. The Flythrough operates in 2 modes - first the user can just bring up the Flythrough dialog and fly around the view interactively. The second mode is to define a set of points which defines the path to follow.

The Flythrough dialog consists of a set of tabs and flythrough controls. The first tab is the Dashboard which gives a simulacrum of an airplane dashboard:

Flythrough Dashboard
Image 1: Flythrough Dashboard
In the Map View a small airplane icon is shown that denotes the current position. A vertical probe line is shown to indicate the location of the viewpoint. The map in the middle of the dashboard shows the current location and the red outline is (roughly) the lat/lon bounds of the Map View. A compass and location readout is alsoshown.
Controlling the Viewpoint
The Viewpoint tab allows you to control the viewpoint of the flythrough. You can control the orientation, zoom and the animation of the transitions.
Flythrough Viewpoint
Image 2: Flythrough Viewpoint

The other tabs will show text descriptions of the points, probed values and the actual points of the track. You can export and import the set of points in a flythrough with the File->Export/Import menu. This is a simple xml format that

Probing Data
If there are other displays in the same view that have data then as one flys through the view the data will be sampled at the location of the flythrough and be shown as gauges in the dashboard. The actual values will be listed under the Values tab. This operates the same way as when one interactively does a middle-mouse drag in the view. The IDV samples the data at the latitude/longitude/altitude of the flythrough point and the current animation time. A time series chart will also be shown in the dashboard (you might have to enlarge the window to see it.

Background Images
If you have the IDV webcam display being shown then the nearest image to the current flythrough point will be shown as a background image in the Dashboard tab. This can be turned off with the View->Dashboard->Show background images menu item.
Flying along a Trajectory
The other to flythrough a view is by flying along a trajectory, i.e., a set of points in 3D space and (possibly) time. The set of points can come from a number of sources:


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