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Slideshow Presentations

In this tutorial we will look at how Slide Shows can be created and modified in ParaViewGeo. We will look at the various options available for adding text to slides, how render views can be added and removed, and how a slide show can be presented.

The slide show function in ParaViewGeo uses the Slide Show pane and the Slide Show toolbar. The pane appears by default to the right of the View Manager and shows thumbnail pictures of the slides that exist in the state. The Slide Show toolbar contains buttons used to create, modify, delete and navigate among the slides

Creating Slides

  • Load the Lens..vtp and Drifts.vtp files from the Demo folder.
    • Apply coloring to the two datasets and change the camera to view along the positive X axis.
    • Press the Add Slide button and give the slide a name (let's call it "1" for now).
    • Select the Lens dataset in the pipeline and apply the Elevation filter (under Alphabetical) using the Z Axis orientation; the Lens dataset is now colored by elevation.
    • Press Ctrl+T on the keyboard; a new slide is created, prompting for a name.
    • Rotate the view to get a better angle on the data, then press the Update Slide button to save this new view.

  • Press the Import File and Create Slide icon and load the Stopes.vtu file in the Demo folder.
    • Any supported file type can be loaded in this way and a slide of the dataset is automatically created using the default coloring and orientation.
    • Enter a slide name when prompted.

  • We can also add text to our slides, so let's create an introductory slide for the presentation.
    • Toggle the visibility so none of the datasets are showing, and select the 3D Text in the Sources menu.
    • In the text field, enter "Welcome to the Slide Show Tutorial", apply the source and then change the color on the Display tab.
    • Note that there is no way to wrap the text or enter carriage returns.
    • Change the orientation to view along the negative Z axis and save the slide as "welcome".
    • Zoom and rotate in the view; note that the 3D text responds to these functions.

  • We can also create text boxes in the render view.
    • These can be used to label slides, or to create a bulleted look to list information.
    • Select the Text option in the Sources menu.
    • In the Text field, enter the text you want to display; you can use carriage returns to "wrap" the text as required.
      • Formatting is applied to the whole text box, so several text boxes need to be created if you want to use various font colors or sizes, such as shown in the image below which uses two text boxes.
    • Click on Apply, then switch to the Display tab to change the color and font size; also make sure the opacity is set to 1 (it defaults to 100 in some versions, so the text appears blurry).
    • Either use the Use Window Location section or manually drag the text box to place it in the correct location in the render view.
    • Add the slide and give it a name.
    • Zoom and rotate in the render view; note that the text box remains static.
    • Toggle the visibility of the Drifts dataset, zoom out, place it in a corner of the view, and save the slide; rotating and zooming affects regular objects, but the text will always stay static.

  • Another option is to use PowerPoint slides to get a real bulleted look.
    • Open PowerPoint and create a slide with a few paragraphs.
      • Use a simple theme to integrate better with ParaViewGeo; you may have to play with the headlight settings when using lighter backgrounds.
    • Take a screenshot of the slide and save it as an image file.
    • Use the Import File and Create Slide option to load the slide.
    • The slide is now an object and will rotate and zoom in the render view.

  • Each slide that is created appears in the Slide Show Pane to the right of the View Manager.
    • Hover over one of the slides in the pane; the title of the slide is displayed.
    • We can re-arrange the slides so the presentation will flow by clicking and dragging a slide to its new location.
      • Re-arrange the "welcome" slide so it is the first slide.
    • We can also rename slides so their names will act as reminders of what the slide contains.
      • Hover over the slides until you find the one named "1", then right-click on the slide and Rename it to "Lens and Drifts".
    • We can delete slides that are no longer required, either by using the Delete Slide icon or by right-clicking on the slide in the pane and choosing the Delete option.
      • Make sure that the slide you want to delete is selected and showing in the View Manager!
      • Delete the slide showing the Stopes dataset using the Delete Slide button, and delete the slide showing the Text source without the Drifts dataset using the right-click delete option (for right-click delete, it doesn't matter which slide is showing in the view).
    • No message appears to ask if you really want to delete a slide, and once deleted, there is no Undo function that will bring the slide back - it has to be re-created.

  • We can save our slide presentation in a state file.
    • Click on File > Save State, name it "Slide Show Tutorial" and save the state file on your desktop.
    • If you decide that you don't need the slides anymore, you can delete all slides at once by selecting Edit > Delete All Slides; all the slides disappear but all the objects still exist in the pipeline.
    • Click on the Disconnect icon and choose Discard to clear the pipeline.
    • Click on File > Recent Files, and note that when you save a state file it automatically appears in the Recent Files list.

Showing a Presentation

  • Load the Slide Show Tutorial state file.
    • Select the third slide in the pane so it appears in the render view.
    • Press the F11 key; the currently active slide appears in the full screen view.
      • Press the F11 key again to go back to the normal view.
    • Press the F5 key; the first slide is loaded into the full screen view.
      • So F11 will always show the current slide, whereas F5 will always go to the first slide.
    • Press the F9 key to toggle the visibility of the active render view's menu bar; if several views are visible, use the F10 key to toggle the visibility of the menu bars on all render views.
    • Use the down arrow to show the next slide in the show, and use the up arrow to show the previous slide.
      • If you're using two monitors or a separate projector, you can use the icons on the Slide Show toolbar to navigate between the slides.
      • Navigate through some of the slides to get comfortable; note that the left and right arrow buttons have no effect.
    • While in the full screen mode, click and drag with the mouse to rotate the slides and use the scroll wheel to zoom; any text boxes will remain static.
    • Press the Escape key or the F11 key to end the slide show and return to the normal mode.
    • Note that slide shows can only be presented in the full screen mode, the custom full screen mode cannot be used.
    • Refer to the HotKeys page for additional keyboard shortcuts that can come in very handy during a presentation (such as using Ctrl+` to reset the camera so all objects fit in the view).

Points regarding Presentations with Multiple Render Views

  • Slides can be created using multiple render views in the View Manager.
    • However, all the slides throughout the presentation must have the same number of views.
    • To create additional views, click on the Split Vertical or Split Horizontal button on the render view's menu bar depending on where you want the new window to appear.
      • Select the 3D View type for the new window.
      • The slide show feature only supports 3D render views, and a warning message displays if you try to create a slide that would include a different view type; the warning message contains a prompt and will remove all non-3D view types before creating a slide.
    • If slides have multiple views, you can switch the windows and resize them even in the middle of a presentation.
      • To switch a window, click on the menu bar of the window you want to move and drag it to the new location; the two windows will trade places.
      • To resize a window, move the cursor between two of the windows until the cursor changes to a double arrow, then click and drag the window to its new size.
    • You can link the cameras in the various views so that when you zoom or rotate during a presentation all the views are affected.
      • To link the cameras of two views, right-click in the first view and click on the Link Camera option, then click in the render view you want to link with.
      • Repeat the process to link additional windows as each link can only contain 2 render views.

We have now looked at how the Slide Show works in ParaViewGeo and how we can create, modify and delete slides. We also looked at how slide shows can be presented, as well as the cautions regarding slides containing multiple render views.

Click on the Disconnect icon and choose Discard to clear the pipeline.

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