Cameras

Salome provides a simple way to store and retrieve a specific point of view corresponding to the scene really seen by user. This behaviour will be kept without any change for the project.

This command is activated by right clicking with the mouse on the 3D view. Then a popup menu is opened, and user can select the ‘Save view parameters’.

The selection of this command creates a new child node in the Study and is shown in the Study browser under the main entry ‘Post-Pro’ – i.e. nodes are located at the same levels as MED files.

From these nodes, 4 options are accessible through another contextual popup menu, as described in the following figure:

Fig. 37 : Popup menu from a ‘Camera’ item of the tree

Persistence of ‘View parameters’ is ensured as a standard Salome behavior and consists in storing/retrieving the corresponding SALOMEDS Study attribute.

Movement of the camera between 2 positions

In certain situation, the movement of camera is slow and smooth to allow user to understand the displacement. Situation concerned are:

• Movement between two registered camera positions as defined in the previous paragraph

• Movement when picking a point (see Description of the picking functionality)

The path between 2 positions will be interpolated by a number of steps computed by the system according to an angular step defined in the preferences.

The interpolated movement takes care about initial and final positions and orientations of the view point and the focal point.

Fig. 38 : Transformation between 2 cameras

Changing the view point to a predefined state

The user can also change the view point by any of the pre-defined icons of the 3D view (top, down, front, back, left, right, axo):

• The camera is smoothly modified to the standard pre-defined state of the corresponding pre-defined view (position, focus, focal distance)

• The center of dynamic rotation of the view is modified to the one corresponding to the pre-defined view

• In the case a point is selected, it remains selected