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The Slide Show feature was first introduced in ParaViewGeo version 1.4.2. The feature was created to help make presentations using ParaViewGeo. The features goal is to provide a means of storing a number of 3D views in a slide show, saving these views in a State File and then providing a means to cycle through each view. This provides the same features as Microsoft's PowerPoint, while still allowing each view to be rotated, zoomed etc.

The views are easily loaded into the View Manager and can be updated, renamed, re-arranged and deleted.

The Slide Show feature is comprised of the Slide Show pane and the Slide Show toolbar, both of which are accessible through the View menu. The Slide Show toolbar displays the available slide tools and is used to store the visual representations generated in the View Manager. The slides are not images but a view location and a copy of each object's visibility and properties. Thus, unlike an image, each slide can be rotated, zoomed and objects can be turned on and off.

The slides that have been created are visible in the Slide Show pane, and selecting a slide from the pane will display it in the render window.

Please note that the slide show feature is only intended for 3D views.


Creating, Updating and Deleting Slides

When you have created a view in the render window that you'd like to save as a slide, click on the Add Slide icon (or Ctrl+T). You'll be prompted for a slide name (it says SlideShow, but is just for the slide), and the slide will be added to the Slide Show pane. This also works if you have multiple render windows in use; the slide will show all the windows. If you now make additional changes in the render view, you can always revert to the saved view by clicking on the slide in the pane.

The other option is to save the new changes you've made. There are two choices, either you can update the current slide to show the new changes by clicking the Update Slide icon (or right-clicking on the slide in the pane and selecting Update), or you can make a new slide with the Add Slide button to keep both views.

Another way of creating a new slide is to use the Import File and Create Slide button available since version 1.4.10. You can use this option to import any kind of supported file, such as datasets that are not yet loaded into the pipeline, or even images you want to use on a slide. Whatever file is loaded will become visible in the currently active render view, and you'll be prompted for a slide name. There is no need to Apply the load in the Object Inspector, as this is done automatically.

Note: Some of the earlier versions that contain this button have a known bug, which was fixed in version 1.4.13. Sometimes when a picture is imported using the Import File and Create Slide option, the picture does not display on the slide, there is an empty object instead. If this happens, select the picture in the Pipeline Browser, then select the Display tab in the Object Inspector. In the Apply Texture drop-down, click the Load option and select the file location again. The picture will now display.

Hovering the mouse over a slide in the pane will display the slide name. You can change the name by right-clicking on the slide and choosing the Rename option. The old slide name is highlighted and you can type the new name and click OK.

If you change your mind and decide that one of the slides you've created is no longer required, select that slide and either right click on it or click the Delete Slide button to remove it from the pane. If you accidentally delete a slide, there is no way to bring it back. Neither of the Undo functions can re-create that slide. To delete all the slides, open the Edit menu and choose Delete All Slides.

Reducing the Number of Render Views

If you have created one or more slides that use multiple render windows, and now want to create a slide that has less views, you cannot simply close one (or more) of the render views, as this would break the connection with the slides that already exist. A message will appear stating that all linked slides will be deleted if the view is closed.

Prior to version 1.4.14, this message did not appear if a view other than a 3D view was removed, but once removed, any slides containing that view could not be re-created. Since Slide Show is designed to work only with the 3D view, starting with version 1.4.14 if you try to save a slide that contains a different view a message will appear indicating that only 3D views are supported and the other view will not be saved as part of the slide.

Instead of deleting a view, you can hide one or more of the views so that they are not visible in the View Manager. To hide a render window you have to use one of the inside edges of that view to resize it until it disappears. For instance, in the image below, we want to hide the bottom left view. Move the cursor between the bottom left and middle windows, and when the double-arrow cursor appears (outlined in red in the image), drag the edge of the window all the way to the left side, until the view disappears, leaving a slightly thicker border. The render window is now hidden at the edge, but still exists; to bring it back, move the mouse to the edge until the cursor changes, and drag the window back out.

You cannot hide a window that currently sits between two other windows. So if we wanted to hide the bottom middle window only, it cannot be done. Instead, we can switch that window with one of the others (say the bottom left again) by clicking on the menu bar of the middle window and dragging it over the left window. This switches the views, and now the left window can be hidden as explained above.

Note: All slides will be affected if a render view is added or hidden, and also if the size of a render view is changed. All slides in the presentation should contain the same number of render views, though it is possible to change the size of the views, including hiding and showing a render view, during a presentation.

Slide Presentations

Slide Show can be used to create presentations that are similar to PowerPoint presentations but still allow interactivity with objects on the slides while the show is presented.

Adding Text

PowerPoint presentations usually have pages of bulleted text, or at least a title at the top of the page. ParaViewGeo doesn't really allow bulleted text on the slides, but there are several options that can be used to add text.

One way to add text is to use the options from the Sources menu. The two that apply are 3D Text and Text.

  • 3D Text will add text right into the 3D space. This text will move with the objects in the 3D view if you pan, zoom or rotate. You also have to specify the coordinates where you want the text to appear.
  • The Text source will add a text box on top of the 3D space. Text boxes can be moved anywhere on the slide and will remain stationary if other objects are rotated or zoomed. Once the initial text is applied, the Display tab can be used to change the text properties, which apply to the full text box. There is no wrap text option, so any 'formatting' must be done in the Text area on the Properties tab. Each text box that is added will create an object in the Pipeline Browser. Title pages and lists can be created using text boxes on the slides, and keyboard characters such as the asterisk * can be used to imply bullets.

You can also import pictures that contain text. For instance, if you want a true theme and bulleted look you can create the slides in PowerPoint, take screenshots, and then use the Import File and Create Slide button to add the slides in Slide Show. Caution!! These 'slides' are now objects and will rotate/zoom in Slide Show, and if changes need to be made to the text, they will have to be made in PowerPoint and the slide will need to be re-added to Slide Show.

Hint: Use simple themes, you will probably need to adjust the View Settings for the background and headlight so the slide matches your show.

Changing the Slide Order

You may want to change the order in which the slides appear, so you can easily move from one slide to the next in your presentation.

To move a slide to a different location in the slide order, click on the slide and drag it along the Slide Show pane. A yellow section with a green arrow will appear in areas where you can drop the slide, unless you want to make it the last slide, in which case no indicator appears.

Slides need to be moved one at a time, there is no way to select multiple slides.

Showing the Presentation

Once your slides are in the correct order, you will want to see the slide presentation. The F11 key toggles between the Full screen and Normal mode, and the currently active slide will appear in full screen. If your first slide is not your active slide at this time, you can use the F5 key to enter the full screen mode and load the first slide.

The visibility of the menu bar on the render view can be toggled using the F9 key. This changes the visibility of the menu bar on the active render view. If your slide contains several views, you can toggle them all using the F10 key. This works both in normal and in the full screen mode.

The arrow keys on the keyboard are used to move from one slide to the next. The up arrow will show the previous slide, and the down arrow displays the next slide. Clicking the left mouse button as you might do to advance a slide in PowerPoint will not work, as the mouse controls the camera movement. Click and drag to rotate the objects in the view, or zoom and pan as before.

If you're using two monitors or a separate projector, you can also use the icons on the Slide Show toolbar to navigate between slides. If the slide show pane is visible you can also click on the specific slide to make it appear in the full screen view.

To end the show, you can use the Escape key on the keyboard or the F11 key. Both options will exit the Full screen mode and return to normal mode.

Refer to the HotKeys page for additional keyboard shortcuts.

Stereo in Slideshows

The stereo settings will be stored in the state files and will thus affect how views are presented during a slide show presentation. If a Slide is stored with a stereo mode turned on, then it will always be displayed in stereo mode. Although this can be annoying, simply toggling stereo on or off on the Stereo Controls panel will allow the same State and Slideshow to be used both on stereoscopic and non-stereoscopic displays

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