Fold

Description

A fold represents one or more connected parts of a page that can move independently around a hinge or crease. This includes various types of folded elements such as fold-out maps, gatefolds, accordion folds, and pop-up mechanisms where panels are connected but can be positioned at different angles or configurations.

The key characteristic is that multiple parts remain physically connected along a fold line (hinge) but can be positioned independently, revealing different content or creating three-dimensional structures.

Examples

Common examples include:

  • Flaps: Small folded sections that can be lifted to reveal hidden content underneath
  • Accordion Folds: Multiple panels connected in a zigzag pattern, commonly used in Asian handscrolls or modern artist books
  • Fold-out Maps: A large map folded to fit within a book that unfolds to reveal the full extent of the geographical area
  • Gatefolds: Two panels that fold out from the center, often used for panoramic images or large diagrams
  • Pop-up Elements: Folded paper structures that create three-dimensional forms when the page is opened

Instances

Yale: Jane Wodening and Stan Brakhage scrapbooks — single flap (images 11 & 12)

Two images show the flap closed and open; hinge is clearly defined and shot at similar angles for alignment.

Please edit some examples here!

17th-century atlas with large fold-out maps of continents

Data

IIIF Manifest

"https://cubap.github.io/movable-books/fixtures/manifests/all.json"

Implementation Notes

When implementing digital representations of folds:

  • Fold States: Represent multiple states (fully folded, partially unfolded, fully unfolded)
  • Hinge Visualization: Show the connection point between folded elements
  • Sequence: Define the order in which panels should be unfolded
  • Viewing Options: Offer both animated unfolding and direct access to different states
  • Composite Views: Provide a way to see all panels aligned as they would appear when fully extended
  • 3D Representation: For pop-ups, consider using 3D models or perspective views to show the raised elements

Viewing Considerations

Different fold types require different viewing approaches:

  • Single Fold-out: Show folded state, transition animation, and unfolded state
  • Gatefolds: Allow progressive unfolding from center outward
  • Accordion Folds: Enable sequential navigation through connected panels
  • Pop-ups: Provide multiple angle views or interactive 3D models to show depth

Theseus Viewer (embedded)

If the embed does not load, open directly: https://theseusviewer.org/?iiif-content=https%3A%2F%2Fcubap.github.io%2Fmovable-books%2Ffixtures%2Fmanifests%2Fyale-16301942-flap.json