This demo shows how to embed a 3D model (in U3D format) in a PDF using Model3DAnnotation. The model is set to display automatically when the page becomes visible, and hide again when the page is left. Note that interactive 3D content can only be viewed in a PDF reader with native 3D support, such as Adobe Acrobat/Reader - it will not render in this site's built-in PDF viewer or in the generated preview image.
