Creating a Presentation

This example demonstrates how to retrieve an existing presentation object, extract its JSON definition, modify its contents, and then apply the updated JSON to a new presentation using the IPresentation.PresentationJSON property. Instead of building a presentation definition entirely from scratch, this approach lets you start from a working presentation created in TerraExplorer, adjust only the relevant parts (for example, add a new action or edit parameters), and then generate a new presentation with the modified JSON. This method is often easier and more reliable than constructing the full JSON manually from the presentation schema.

try {

    // Get existing presentation and extract its JSON

    var oldPresentation = SGWorld.ProjectTree.GetObject(

        SGWorld.ProjectTree.FindItem("Auburn - Fireworks & Water Body")

    );

    var json = JSON.parse(oldPresentation.PresentationJSON);

    // Create new action as JSON object

    var actionFlyTo = {

        actionType: "FlyTo",

        description: "",

        options: {

            activationAction: "Circle pattern",

            duration: 5,

            poi: {

                altitude: 1494.09375,

                distance: 3877278.555371787,

                isRelative: false,

                viewerPitch: -72.06956713327715,

                viewerYaw: 355.4828574744612,

                x: -103.95114771762604,

                y: 35.60232149209262

            }

        }

    };

    // Add the newly created action to the existing JSON and set the JSON into a new presentation

    json.presentation.steps[0].actions.push(actionFlyTo);

    var newPresentation = SGWorld.Creator.CreatePresentation("", "New Presentation");

    newPresentation.PresentationJSON = JSON.stringify(json);

} catch (ex) {

    alert(ex);

}