Create Panorama

In addition to the In Sketch view camera options available, FormIt can export a Panorama image for 3D viewing of your sketch in an external viewer, available from the View menu:

This will generate a full 360-degree image from the current camera view.

The width of the image can be modified and the mode can be toggled between Cylindrical and Spherical panorama:

Save the file, and load it in your favorite 3D viewer, such as https://renderstuff.com/tools/360-panorama-web-viewer/ (used in these examples):

This is a also a great tool for viewing indoor spaces: