3. Interacting with the Scene

The user can interact with a DataViewer scene using the mouse and the keyboard. The objects displayed in the main window can be rotated, translated and zoomed. Note that

• Once a rotation movement has been imposed on the scene, it keeps gqoing on until it is stopped or another rotation movement is performed.
• Each particular application of DataViewer may define its own scene manipulation operations beside the general ones. Look at the documentation of the application for that.
• The scene can also be controlled by a 6D device called Magellan when available. See the section on the Magellan menu for more details.

Here are the keyboard and mouse bindings for these operations:

3.1 Keyboard bindings

Left and Right keys

Perform rotations about the vertical axis.

Up and Down keys

Perform rotations about the horizontal axis.

Page Up and Page Down keys

Perform rotations about the axis "coming out of the screen".

Control + Left and Right keys

Translate the object horizontally.

Control + Up and Down keys

Translate the object vertically.

Control + Page Up and Page Down keys

Zoom the object.

3.2 Mouse bindings

Left Mouse Button

This button is usually used by each application for its own purpose.

Hold down the Middle Mouse Button

Performs rotations of the scene based upon the virtual trackball paradigm.

Release the Middle Mouse Button

The scene continues to rotate in the same direction as it was rotating when the button was released.

Click the Middle Mouse Button

The scene stops rotating.

Hold down the Right Mouse Button

Translates the scene based upon the movements of the mouse.

Hold down the Middle Mouse Button with Shift Key held down

As the mouse is moved up the scene is moved closer to the eye-point (zoom in), and as the mouse is moved down the scene is moved further away from the eye-point (zoom out).